{"id":6131,"date":"2025-07-17T02:30:27","date_gmt":"2025-07-17T00:30:27","guid":{"rendered":"https:\/\/clusterdapizarra.com\/propiedades-de-la-pizarra\/"},"modified":"2026-04-11T20:01:23","modified_gmt":"2026-04-11T18:01:23","slug":"propiedades-da-pizarra","status":"publish","type":"page","link":"https:\/\/clusterdapizarra.com\/gl\/propiedades-da-pizarra\/","title":{"rendered":"Propiedades da Pizarra"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><div style=\"\" class=\"vc_row wpb_row vc_row-fluid vc_custom_1737982498896 vc_row-has-fill\"><div class=\"row-inner\"><div class=\"wpb_column vc_column_container vc_col-sm-2\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-8\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\">\n\t<div class=\"wpb_text_column wpb_content_element wpb_animate_when_almost_visible wpb_appear appear vc_custom_1742463274279 shadow\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<h3 class=\"no-margin-top\" style=\"text-align: center; font-size: 2rem;\">Propiedades da Pizarra<\/h3>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-2\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><\/div><\/div><\/div><\/div><\/div><div style=\"\" class=\"vc_row wpb_row vc_row-fluid\"><div class=\"row-inner\"><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vc_row wpb_row vc_inner vc_row-fluid\"><div class=\"wpb_column vc_column_container vc_col-sm-4\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><h3 style=\"text-align: left\" class=\"vc_custom_heading vc_do_custom_heading\" >Durabilidade<\/h3><div class=\"vc_empty_space\"   style=\"height: 20px\"><span class=\"vc_empty_space_inner\"><\/span><\/div>\n\t<div  class=\"wpb_single_image wpb_content_element vc_align_left wpb_content_element\">\n\t\t\n\t\t<figure class=\"wpb_wrapper vc_figure\">\n\t\t\t<div class=\"vc_single_image-wrapper vc_box_shadow_3d  vc_box_border_grey\"><img loading=\"lazy\" decoding=\"async\" width=\"529\" height=\"314\" src=\"https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/01\/Durabilidad_pizarra.jpg\" class=\"vc_single_image-img attachment-full\" alt=\"\" title=\"Durabilidad de La Pizarra\" srcset=\"https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/01\/Durabilidad_pizarra.jpg 529w, https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/01\/Durabilidad_pizarra-300x178.jpg 300w\" sizes=\"auto, (max-width: 529px) 100vw, 529px\" \/><\/div>\n\t\t<\/figure>\n\t<\/div>\n<div class=\"vc_empty_space\"   style=\"height: 20px\"><span class=\"vc_empty_space_inner\"><\/span><\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-8\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vc_empty_space\"   style=\"height: 30px\"><span class=\"vc_empty_space_inner\"><\/span><\/div>\n\t<div class=\"wpb_text_column wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p align=\"JUSTIFY\"><span lang=\"gl-ES\">A durabilidade \u00e9 a propiedade m\u00e1is importante e que mellor caracteriza \u00e1 pizarra de Galicia e \u00e9, sen d\u00fabida, a que marca a diferenza co resto de materiais substitutivos que se utilizan en cuberta e fachada. A pizarra permanece inalterable e constante nas s\u00faas propiedades t\u00e9cnicas fronte a moitos factores como a humidade, o po, o salitre, o fr\u00edo, a calor, a neve ou o vento. Polo tanto, a pizarra \u00e9 resistente aos ataques dos axentes atmosf\u00e9ricos e \u00e1s corrosi\u00f3ns producidas por fumes e gases; debido \u00e1 s\u00faa composici\u00f3n, non \u00e9 atacada nin por \u00e1cidos nin por bases, sendo practicamente insensible ao medio ambiente natural ou industrial. Nesta invariabilidade das s\u00faas caracter\u00edsticas reside en parte unha das s\u00faas maiores virtudes, que \u00e9 a durabilidade. Segundo un estudo da Universidade de Bath, no Reino Unido, est\u00edmase que a vida \u00fatil dunha pizarra \u00e9 de 200 anos..<\/span><\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div style=\"\" class=\"vc_row wpb_row vc_row-fluid\"><div class=\"row-inner\"><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vc_empty_space\"   style=\"height: 50px\"><span class=\"vc_empty_space_inner\"><\/span><\/div><div class=\"vc_row wpb_row vc_inner vc_row-fluid\"><div class=\"wpb_column vc_column_container vc_col-sm-4\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><h3 style=\"text-align: left\" class=\"vc_custom_heading vc_do_custom_heading\" >Illamento t\u00e9rmico<\/h3><div class=\"vc_empty_space\"   style=\"height: 20px\"><span class=\"vc_empty_space_inner\"><\/span><\/div>\n\t<div  class=\"wpb_single_image wpb_content_element vc_align_left wpb_content_element\">\n\t\t\n\t\t<figure class=\"wpb_wrapper vc_figure\">\n\t\t\t<div class=\"vc_single_image-wrapper vc_box_shadow_3d  vc_box_border_grey\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"512\" src=\"https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/06\/Aislamiento-termico-Pizarra.jpg\" class=\"vc_single_image-img attachment-full\" alt=\"\" title=\"Illamento t\u00e9rmico\" srcset=\"https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/06\/Aislamiento-termico-Pizarra.jpg 768w, https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/06\/Aislamiento-termico-Pizarra-18x12.jpg 18w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/div>\n\t\t<\/figure>\n\t<\/div>\n<div class=\"vc_empty_space\"   style=\"height: 20px\"><span class=\"vc_empty_space_inner\"><\/span><\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-8\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vc_empty_space\"   style=\"height: 30px\"><span class=\"vc_empty_space_inner\"><\/span><\/div>\n\t<div class=\"wpb_text_column wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p align=\"JUSTIFY\"><span lang=\"gl-ES\">Alg\u00fans dos materiais utilizados para a colocaci\u00f3n en cuberta ou fachada non presentan un adecuado illamento t\u00e9rmico, sendo este un dos factores representativos que indican a calidade do produto. Tanto \u00e9 as\u00ed, que no C\u00f3digo T\u00e9cnico da Edificaci\u00f3n establ\u00e9cese a actual Certificaci\u00f3n Enerx\u00e9tica dos Edificios, que cataloga e diferencia as edificaci\u00f3ns polo seu aforro enerx\u00e9tico en funci\u00f3n da resistencia t\u00e9rmica dos elementos que forman os cerramentos e a cuberta, entre outros.<br \/>\nO illamento t\u00e9rmico dos cerramentos \u00e9 maior canto menor sexa o coeficiente de transmisi\u00f3n t\u00e9rmica dos elementos polos que est\u00e1n formados. No caso das cubertas, a pizarra destaca sobre outros materiais de cubrici\u00f3n. Ademais, se se engade a montaxe habitual da pizarra con c\u00e1mara de aire, ou con materiais illantes, a dita condutividade t\u00e9rmica ser\u00e1 moito menor, polo que o illamento t\u00e9rmico e, polo tanto, o aforro enerx\u00e9tico da vivenda, ser\u00e1 maior.<br \/>\n<\/span><\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div style=\"\" class=\"vc_row wpb_row vc_row-fluid\"><div class=\"row-inner\"><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vc_empty_space\"   style=\"height: 50px\"><span class=\"vc_empty_space_inner\"><\/span><\/div><div class=\"vc_row wpb_row vc_inner vc_row-fluid\"><div class=\"wpb_column vc_column_container vc_col-sm-4\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><h3 style=\"text-align: left\" class=\"vc_custom_heading vc_do_custom_heading\" >Impermeabilidade e resistencia \u00e1 xeada<\/h3><div class=\"vc_empty_space\"   style=\"height: 20px\"><span class=\"vc_empty_space_inner\"><\/span><\/div>\n\t<div  class=\"wpb_single_image wpb_content_element vc_align_left wpb_content_element\">\n\t\t\n\t\t<figure class=\"wpb_wrapper vc_figure\">\n\t\t\t<div class=\"vc_single_image-wrapper vc_box_shadow_3d  vc_box_border_grey\"><img loading=\"lazy\" decoding=\"async\" width=\"750\" height=\"449\" src=\"https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/01\/impermeabilidad-resistencia-helada.jpg\" class=\"vc_single_image-img attachment-full\" alt=\"\" title=\"impermeabilidad-resistencia-helada\" srcset=\"https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/01\/impermeabilidad-resistencia-helada.jpg 750w, https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/01\/impermeabilidad-resistencia-helada-300x180.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/div>\n\t\t<\/figure>\n\t<\/div>\n<div class=\"vc_empty_space\"   style=\"height: 20px\"><span class=\"vc_empty_space_inner\"><\/span><\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-8\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vc_empty_space\"   style=\"height: 30px\"><span class=\"vc_empty_space_inner\"><\/span><\/div>\n\t<div class=\"wpb_text_column wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p align=\"JUSTIFY\"><span lang=\"gl-ES\">A impermeabilidade da pizarra asegura unha absorci\u00f3n de auga e unha xeladicidade baixas, as cales est\u00e1n intimamente relacionadas coa durabilidade. S\u00f3 hai que usar o sentido com\u00fan: se un material absorbe unha cantidade elevada de auga debido \u00e1 s\u00faa porosidade, e s\u00e1bese que a conxelaci\u00f3n da auga e a formaci\u00f3n de xeo supo\u00f1en un aumento de volume pola s\u00faa transformaci\u00f3n de l\u00edquido a s\u00f3lido, \u00e9 evidente que un material poroso exposto a baixas temperaturas e xeadas vai sufrir con maior intensidade, podendo chegar a fenderse ou romperse. No estudo realizado pola Universidade de Santiago de Compostela com\u00e9ntase que a absorci\u00f3n \u00e9 unha propiedade do material que representa a capacidade do mesmo para absorber auga. Est\u00e1 pois relacionada coa porosidade aberta, ou o que \u00e9 o mesmo, o volume de ocos en contacto coa atmosfera. Os materiais obxecto do estudo presentan os seguintes valores, segundo o mesmo: Placas de pizarra: 0,40%. Tellas cer\u00e1micas: 12%. Tellas de formig\u00f3n: 6%. \u00c9 evidente o menor valor de absorci\u00f3n da pizarra con respecto aos outros dous materiais.<\/span><\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div style=\"\" class=\"vc_row wpb_row vc_row-fluid\"><div class=\"row-inner\"><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vc_empty_space\"   style=\"height: 50px\"><span class=\"vc_empty_space_inner\"><\/span><\/div><div class=\"vc_row wpb_row vc_inner vc_row-fluid\"><div class=\"wpb_column vc_column_container vc_col-sm-4\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><h3 style=\"text-align: left\" class=\"vc_custom_heading vc_do_custom_heading\" >Illamento ac\u00fastico<\/h3><div class=\"vc_empty_space\"   style=\"height: 20px\"><span class=\"vc_empty_space_inner\"><\/span><\/div>\n\t<div  class=\"wpb_single_image wpb_content_element vc_align_left wpb_content_element\">\n\t\t\n\t\t<figure class=\"wpb_wrapper vc_figure\">\n\t\t\t<div class=\"vc_single_image-wrapper vc_box_shadow_3d  vc_box_border_grey\"><img loading=\"lazy\" decoding=\"async\" width=\"810\" height=\"533\" src=\"https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/01\/Aislamiento-Acustico-1.jpg\" class=\"vc_single_image-img attachment-full\" alt=\"\" title=\"Aislamiento-Acustico\" srcset=\"https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/01\/Aislamiento-Acustico-1.jpg 810w, https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/01\/Aislamiento-Acustico-1-300x197.jpg 300w, https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/01\/Aislamiento-Acustico-1-768x505.jpg 768w\" sizes=\"auto, (max-width: 810px) 100vw, 810px\" \/><\/div>\n\t\t<\/figure>\n\t<\/div>\n<div class=\"vc_empty_space\"   style=\"height: 20px\"><span class=\"vc_empty_space_inner\"><\/span><\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-8\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vc_empty_space\"   style=\"height: 30px\"><span class=\"vc_empty_space_inner\"><\/span><\/div>\n\t<div class=\"wpb_text_column wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p align=\"JUSTIFY\"><span lang=\"gl-ES\">A propiedade de illamento ac\u00fastico depende da densidade dos materiais que compo\u00f1en o cerramento, neste caso a cuberta. A densidade da pizarra \u00e9 maior ca doutros materiais, polo que sup\u00f3n un maior illamento ac\u00fastico, tanto ao ru\u00eddo a\u00e9reo como ao ru\u00eddo producido por calquera tipo de impacto. A propiedade do illamento ac\u00fastico depende da densidade dos materiais que componen o cerramento, neste caso a cuberta. O valor da densidade da pizarra oscila entre 2,7 \u2013 2,85 gr\/cm3, mentres que o dos principais materiais de cubrici\u00f3n como son a tella cer\u00e1mica e o fibrocemento son 2,0 gr\/cm3 e 1,8 gr\/cm3, respectivamente. A densidade da pizarra \u00e9 maior ca doutros materiais polo que sup\u00f3n un maior illamento ac\u00fastico, tanto ao ru\u00eddo a\u00e9reo como ao ru\u00eddo producido por calquera tipo de impacto. Ante o ru\u00eddo de impacto, como pode ser a auga da chuvia ao golpear contra a cuberta, a pizarra conta coa vantaxe de ser un material moi coherente e el\u00e1stico, polo que \u00e9 dif\u00edcil que unha lousa de pizarra ben colocada entre en resonancia, absorbendo ben o impacto.<\/span><\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div style=\"\" class=\"vc_row wpb_row vc_row-fluid\"><div class=\"row-inner\"><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vc_empty_space\"   style=\"height: 50px\"><span class=\"vc_empty_space_inner\"><\/span><\/div><div class=\"vc_row wpb_row vc_inner vc_row-fluid\"><div class=\"wpb_column vc_column_container vc_col-sm-4\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><h3 style=\"text-align: left\" class=\"vc_custom_heading vc_do_custom_heading\" >Illamento el\u00e9ctrico<\/h3><div class=\"vc_empty_space\"   style=\"height: 20px\"><span class=\"vc_empty_space_inner\"><\/span><\/div>\n\t<div  class=\"wpb_single_image wpb_content_element vc_align_left wpb_content_element\">\n\t\t\n\t\t<figure class=\"wpb_wrapper vc_figure\">\n\t\t\t<div class=\"vc_single_image-wrapper vc_box_shadow_3d  vc_box_border_grey\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"400\" src=\"https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/06\/Aislamiento-electrico-de-la-Pizarra.jpg\" class=\"vc_single_image-img attachment-full\" alt=\"\" title=\"Illamento el\u00e9ctrico\" srcset=\"https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/06\/Aislamiento-electrico-de-la-Pizarra.jpg 768w, https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/06\/Aislamiento-electrico-de-la-Pizarra-18x9.jpg 18w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/div>\n\t\t<\/figure>\n\t<\/div>\n<div class=\"vc_empty_space\"   style=\"height: 20px\"><span class=\"vc_empty_space_inner\"><\/span><\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-8\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vc_empty_space\"   style=\"height: 30px\"><span class=\"vc_empty_space_inner\"><\/span><\/div>\n\t<div class=\"wpb_text_column wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p align=\"JUSTIFY\"><span lang=\"gl-ES\">A falta de condutividade conf\u00edrelle \u00e1 pizarra un gran valor como material illante. A s\u00faa utilizaci\u00f3n nos cadros el\u00e9ctricos acadou tal importancia que durante a Segunda Guerra Mundial a produci\u00f3n das canteiras orientouse \u00e1 fabricaci\u00f3n deses compo\u00f1entes con destino \u00e1 maquinaria b\u00e9lica. M\u00e1is tarde, coa chegada de novos materiais illantes m\u00e1is lixeiros, pr\u00e1cticos e baratos, relegouse o seu uso con esta finalidade. Hoxe en d\u00eda a\u00ednda quedan cadros el\u00e9ctricos de pizarra nalg\u00fans edificios antigos dos Estados Unidos.<\/span><\/p>\n\n\t\t<\/div>\n\t<\/div>\n<div class=\"vc_empty_space\"   style=\"height: 50px\"><span class=\"vc_empty_space_inner\"><\/span><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div style=\"\" class=\"vc_row wpb_row vc_row-fluid\"><div class=\"row-inner\"><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vc_empty_space\"   style=\"height: 50px\"><span class=\"vc_empty_space_inner\"><\/span><\/div><div class=\"vc_row wpb_row vc_inner vc_row-fluid\"><div class=\"wpb_column vc_column_container vc_col-sm-4\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><h3 style=\"text-align: left\" class=\"vc_custom_heading vc_do_custom_heading\" >Resistencia \u00e1 flexi\u00f3n<\/h3><div class=\"vc_empty_space\"   style=\"height: 20px\"><span class=\"vc_empty_space_inner\"><\/span><\/div>\n\t<div  class=\"wpb_single_image wpb_content_element vc_align_left wpb_content_element\">\n\t\t\n\t\t<figure class=\"wpb_wrapper vc_figure\">\n\t\t\t<div class=\"vc_single_image-wrapper vc_box_shadow_3d  vc_box_border_grey\"><img loading=\"lazy\" decoding=\"async\" width=\"565\" height=\"506\" src=\"https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/01\/resistencia_flexion.jpg\" class=\"vc_single_image-img attachment-full\" alt=\"\" title=\"Resistencia a la flexi\u00f3n\" srcset=\"https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/01\/resistencia_flexion.jpg 565w, https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/01\/resistencia_flexion-300x269.jpg 300w\" sizes=\"auto, (max-width: 565px) 100vw, 565px\" \/><\/div>\n\t\t<\/figure>\n\t<\/div>\n<div class=\"vc_empty_space\"   style=\"height: 20px\"><span class=\"vc_empty_space_inner\"><\/span><\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-8\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vc_empty_space\"   style=\"height: 30px\"><span class=\"vc_empty_space_inner\"><\/span><\/div>\n\t<div class=\"wpb_text_column wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p align=\"JUSTIFY\"><span lang=\"gl-ES\">No estudo da Universidade de Santiago de Compostela con datos achegados por LOEMCO anal\u00edzase outra das propiedades m\u00e1is significativas para a durabilidade, a resistencia \u00e1 flexi\u00f3n. Neste estudo comp\u00e1ranse as resistencias \u00e1 flexi\u00f3n de distintos materiais de cuberta segundo a realizaci\u00f3n de ensaios en laboratorio que proban que a pizarra presenta unha alta resistencia \u00e1 flexi\u00f3n, polo tanto unha maior durabilidade. En resumo, nos ensaios suponse unha placa de pizarra de 10 mm de espesor, que \u00e9 o espesor nominal dunha tella cer\u00e1mica ou de formig\u00f3n, cunha anchura de 290 mm e unha lonxitude tal que permita colocala entre as barras de apoio do dispositivo do ensaio de flexi\u00f3n, separadas 370 mm. Podendo esta placa asimilarse a unha tella cer\u00e1mica plana de dimensi\u00f3ns de 470 x 290 mm.\u00a0 Nestas condici\u00f3ns, para un ensaio en seco obtense un valor de carga de rotura para a pizarra de 365 daN, valor claramente superior ao dunha tella cer\u00e1mica plana destas dimensi\u00f3ns, para a cal se poder\u00edan esperar valores da orde de 250 \u2013 300 daN. E tam\u00e9n superior \u00e1 resistencia \u00e1 flexi\u00f3n en carga de rotura de 150 daN que presentan as tellas planas de formig\u00f3n. Para saber de que magnitudes fala a norma, a unidade de forza daN denom\u00ednase decanewton e equivale a 10 Newtons, ou o que \u00e9 o mesmo, 1 daN aproximadamente equivale a 1 quilogramo. Polo tanto, claramente a pizarra ten maior resistencia \u00e1 flexi\u00f3n que as tellas cer\u00e1micas e de formig\u00f3n, o cal est\u00e1 directamente relacionado cunha maior durabilidade do material.<\/span><\/p>\n\n\t\t<\/div>\n\t<\/div>\n<div class=\"vc_empty_space\"   style=\"height: 50px\"><span class=\"vc_empty_space_inner\"><\/span><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div style=\"\" class=\"vc_row wpb_row vc_row-fluid\"><div class=\"row-inner\"><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vc_row wpb_row vc_inner vc_row-fluid\"><div class=\"wpb_column vc_column_container vc_col-sm-4\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><h3 style=\"text-align: left\" class=\"vc_custom_heading vc_do_custom_heading\" >Versatilidade<\/h3><div class=\"vc_empty_space\"   style=\"height: 20px\"><span class=\"vc_empty_space_inner\"><\/span><\/div>\n\t<div  class=\"wpb_single_image wpb_content_element vc_align_left wpb_content_element\">\n\t\t\n\t\t<figure class=\"wpb_wrapper vc_figure\">\n\t\t\t<div class=\"vc_single_image-wrapper vc_box_shadow_3d  vc_box_border_grey\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"425\" src=\"https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/05\/Versatilidad-de-la-Pizarra.jpg\" class=\"vc_single_image-img attachment-full\" alt=\"\" title=\"Versatilidade\" srcset=\"https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/05\/Versatilidad-de-la-Pizarra.jpg 800w, https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/05\/Versatilidad-de-la-Pizarra-300x159.jpg 300w, https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/05\/Versatilidad-de-la-Pizarra-768x408.jpg 768w, https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/05\/Versatilidad-de-la-Pizarra-18x10.jpg 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/div>\n\t\t<\/figure>\n\t<\/div>\n<div class=\"vc_empty_space\"   style=\"height: 20px\"><span class=\"vc_empty_space_inner\"><\/span><\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-8\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vc_empty_space\"   style=\"height: 50px\"><span class=\"vc_empty_space_inner\"><\/span><\/div>\n\t<div class=\"wpb_text_column wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p align=\"JUSTIFY\"><span lang=\"gl-ES\">P\u00f3dese afirmar que todas as formas, pendentes ou espazos poden ser cubertos con pizarra. Partindo desta afirmaci\u00f3n e apreciando a inmellorable calidade est\u00e9tica e t\u00e9cnica do acabado da pizarra, \u00e9 l\u00f3xico pensar que poida utilizarse para levar a cabo diferentes elementos construtivos. O uso da pizarra para cubertas \u00e9 o m\u00e1is com\u00fan debido \u00e1s innumerables caracter\u00edsticas que achega para tal fin. Este feito non debe eclipsar as diversas soluci\u00f3ns construtivas que \u00e9 capaz de realizar a pizarra, como poden ser pavimentos interiores e exteriores, revestimentos interiores, revestimentos de fachada, fachadas ventiladas e mesmo elementos decorativos na construci\u00f3n.<\/span><\/p>\n\n\t\t<\/div>\n\t<\/div>\n<div class=\"vc_empty_space\"   style=\"height: 50px\"><span class=\"vc_empty_space_inner\"><\/span><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div style=\"\" class=\"vc_row wpb_row vc_row-fluid\"><div class=\"row-inner\"><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vc_row wpb_row vc_inner vc_row-fluid\"><div class=\"wpb_column vc_column_container vc_col-sm-4\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><h3 style=\"text-align: left\" class=\"vc_custom_heading vc_do_custom_heading\" >Material Ign\u00edfugo<\/h3><div class=\"vc_empty_space\"   style=\"height: 20px\"><span class=\"vc_empty_space_inner\"><\/span><\/div>\n\t<div  class=\"wpb_single_image wpb_content_element vc_align_left wpb_content_element\">\n\t\t\n\t\t<figure class=\"wpb_wrapper vc_figure\">\n\t\t\t<div class=\"vc_single_image-wrapper vc_box_shadow_3d  vc_box_border_grey\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"425\" src=\"https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/05\/Pizarra-Material-ignifugo.jpg\" class=\"vc_single_image-img attachment-full\" alt=\"\" title=\"Material Ign\u00edfugo\" srcset=\"https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/05\/Pizarra-Material-ignifugo.jpg 800w, https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/05\/Pizarra-Material-ignifugo-300x159.jpg 300w, https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/05\/Pizarra-Material-ignifugo-768x408.jpg 768w, https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/05\/Pizarra-Material-ignifugo-18x10.jpg 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/div>\n\t\t<\/figure>\n\t<\/div>\n<div class=\"vc_empty_space\"   style=\"height: 20px\"><span class=\"vc_empty_space_inner\"><\/span><\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-8\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vc_empty_space\"   style=\"height: 50px\"><span class=\"vc_empty_space_inner\"><\/span><\/div>\n\t<div class=\"wpb_text_column wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p align=\"JUSTIFY\"><span lang=\"gl-ES\">A pizarra, polas s\u00faas caracter\u00edsticas, est\u00e1 exenta da realizaci\u00f3n de ensaios en canto a reacci\u00f3n e comportamento fronte ao lume externo, porque se considera un material ign\u00edfugo.<\/span><\/p>\n\n\t\t<\/div>\n\t<\/div>\n<div class=\"vc_empty_space\"   style=\"height: 50px\"><span class=\"vc_empty_space_inner\"><\/span><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div style=\"\" class=\"vc_row wpb_row vc_row-fluid\"><div class=\"row-inner\"><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vc_row wpb_row vc_inner vc_row-fluid\"><div class=\"wpb_column vc_column_container vc_col-sm-4\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><h3 style=\"text-align: left\" class=\"vc_custom_heading vc_do_custom_heading\" >Superficie lisa<\/h3><div class=\"vc_empty_space\"   style=\"height: 20px\"><span class=\"vc_empty_space_inner\"><\/span><\/div>\n\t<div  class=\"wpb_single_image wpb_content_element vc_align_left wpb_content_element\">\n\t\t\n\t\t<figure class=\"wpb_wrapper vc_figure\">\n\t\t\t<div class=\"vc_single_image-wrapper vc_box_shadow_3d  vc_box_border_grey\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"425\" src=\"https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/05\/Superficie-lisa-Pizarra.jpg\" class=\"vc_single_image-img attachment-full\" alt=\"\" title=\"Superficie lisa\" srcset=\"https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/05\/Superficie-lisa-Pizarra.jpg 800w, https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/05\/Superficie-lisa-Pizarra-300x159.jpg 300w, https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/05\/Superficie-lisa-Pizarra-768x408.jpg 768w, https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/05\/Superficie-lisa-Pizarra-18x10.jpg 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/div>\n\t\t<\/figure>\n\t<\/div>\n<div class=\"vc_empty_space\"   style=\"height: 20px\"><span class=\"vc_empty_space_inner\"><\/span><\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-8\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vc_empty_space\"   style=\"height: 50px\"><span class=\"vc_empty_space_inner\"><\/span><\/div>\n\t<div class=\"wpb_text_column wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p align=\"JUSTIFY\"><span lang=\"gl-ES\">Unha das caracter\u00edsticas que fan \u00fanica \u00e1 pizarra \u00e9 a s\u00faa superficie, posto que non require acabado ning\u00fan para o seu uso comercial, ao contrario do que acontece con outros materiais. Os acabados que se lle dan \u00e1 rocha ornamental obt\u00e9\u00f1ense durante o proceso de exfoliaci\u00f3n da pizarra, creando superficies lisas, planas, pero sempre naturais.<\/span><\/p>\n\n\t\t<\/div>\n\t<\/div>\n<div class=\"vc_empty_space\"   style=\"height: 50px\"><span class=\"vc_empty_space_inner\"><\/span><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div style=\"\" class=\"vc_row wpb_row vc_row-fluid\"><div class=\"row-inner\"><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vc_row wpb_row vc_inner vc_row-fluid\"><div class=\"wpb_column vc_column_container vc_col-sm-4\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><h3 style=\"text-align: left\" class=\"vc_custom_heading vc_do_custom_heading\" >Mantemento da pizarra<\/h3><div class=\"vc_empty_space\"   style=\"height: 20px\"><span class=\"vc_empty_space_inner\"><\/span><\/div>\n\t<div  class=\"wpb_single_image wpb_content_element vc_align_left wpb_content_element\">\n\t\t\n\t\t<figure class=\"wpb_wrapper vc_figure\">\n\t\t\t<div class=\"vc_single_image-wrapper vc_box_shadow_3d  vc_box_border_grey\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"425\" src=\"https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/05\/Mantenimiento-Pizarra.jpg\" class=\"vc_single_image-img attachment-full\" alt=\"\" title=\"Mantenimiento de la Pizarra\" srcset=\"https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/05\/Mantenimiento-Pizarra.jpg 800w, https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/05\/Mantenimiento-Pizarra-300x159.jpg 300w, https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/05\/Mantenimiento-Pizarra-768x408.jpg 768w, https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/05\/Mantenimiento-Pizarra-18x10.jpg 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/div>\n\t\t<\/figure>\n\t<\/div>\n<div class=\"vc_empty_space\"   style=\"height: 20px\"><span class=\"vc_empty_space_inner\"><\/span><\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-8\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vc_empty_space\"   style=\"height: 50px\"><span class=\"vc_empty_space_inner\"><\/span><\/div>\n\t<div class=\"wpb_text_column wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p align=\"JUSTIFY\">O mantemento dunha cuberta ou fachada de pizarra \u00e9 moi econ\u00f3mico e consiste basicamente nunha limpeza con auga corrente a moi pouca presi\u00f3n, co fin de evitar a acumulaci\u00f3n de po ou sucidade.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<div class=\"vc_empty_space\"   style=\"height: 50px\"><span class=\"vc_empty_space_inner\"><\/span><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div style=\"\" class=\"vc_row wpb_row vc_row-fluid\"><div class=\"row-inner\"><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vc_row wpb_row vc_inner vc_row-fluid\"><div class=\"wpb_column vc_column_container vc_col-sm-4\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><h3 style=\"text-align: left\" class=\"vc_custom_heading vc_do_custom_heading\" >Elegancia<\/h3><div class=\"vc_empty_space\"   style=\"height: 20px\"><span class=\"vc_empty_space_inner\"><\/span><\/div>\n\t<div  class=\"wpb_single_image wpb_content_element vc_align_left wpb_content_element\">\n\t\t\n\t\t<figure class=\"wpb_wrapper vc_figure\">\n\t\t\t<div class=\"vc_single_image-wrapper vc_box_shadow_3d  vc_box_border_grey\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"400\" src=\"https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/06\/Elegancia-de-la-Pizarra.jpg\" class=\"vc_single_image-img attachment-full\" alt=\"\" title=\"Elegancia de la Pizarra\" srcset=\"https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/06\/Elegancia-de-la-Pizarra.jpg 768w, https:\/\/clusterdapizarra.com\/wp-content\/uploads\/2025\/06\/Elegancia-de-la-Pizarra-18x9.jpg 18w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/div>\n\t\t<\/figure>\n\t<\/div>\n<div class=\"vc_empty_space\"   style=\"height: 20px\"><span class=\"vc_empty_space_inner\"><\/span><\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-8\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vc_empty_space\"   style=\"height: 50px\"><span class=\"vc_empty_space_inner\"><\/span><\/div>\n\t<div class=\"wpb_text_column wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p align=\"JUSTIFY\">A pizarra \u00e9 un material elegante, con brillo natural e textura moi particular, que fala da s\u00faa orixe sedimentaria e valor hist\u00f3rico. Esteticamente, \u00e9 a mellor elecci\u00f3n.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<div class=\"vc_empty_space\"   style=\"height: 50px\"><span class=\"vc_empty_space_inner\"><\/span><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div style=\"\" class=\"vc_row wpb_row vc_row-fluid\"><div class=\"row-inner\"><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vc_empty_space\"   style=\"height: 100px\"><span class=\"vc_empty_space_inner\"><\/span><\/div><\/div><\/div><\/div><\/div><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"Propiedades da Pizarra Durabilidade A durabilidade \u00e9 a propiedade m\u00e1is importante e que mellor caracteriza \u00e1 pizarra de Galicia e \u00e9, sen d\u00fabida, a que marca a diferenza co resto de materiais substitutivos que se utilizan en cuberta e fachada. A pizarra permanece inalterable e constante nas s\u00faas propiedades t\u00e9cnicas fronte a moitos factores como [...]","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-6131","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Propiedades da Pizarra | Cl\u00faster da Pizarra.<\/title>\n<meta name=\"description\" content=\"O uso da pizarra para cubertas \u00e9 o m\u00e1is com\u00fan debido \u00e1s innumerables caracter\u00edsticas que achega para tal fin.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/clusterdapizarra.com\/gl\/propiedades-da-pizarra\/\" \/>\n<meta property=\"og:locale\" content=\"gl_ES\" 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