{"id":276207,"date":"2017-04-02T12:10:42","date_gmt":"2017-04-02T12:10:42","guid":{"rendered":"https:\/\/www.sanier.pl\/produkt\/sperrmortel-fein\/"},"modified":"2026-02-24T11:46:21","modified_gmt":"2026-02-24T11:46:21","slug":"sperrmortel-fein","status":"publish","type":"product","link":"https:\/\/www.sanier.pl\/en\/produkt\/sperrmortel-fein\/","title":{"rendered":"BOSTIK BLOCK C781 TERRA LOCK XS (Sperrmortel Fein)"},"content":{"rendered":"<p>[vc_row][vc_column][vc_column_text]<\/p>\n<h1 style=\"text-align: center;\"><strong><span style=\"color: #000000;\">BOSTIK BLOCK C781 TERRA LOCK XS\u00a0 <\/span><\/strong><\/h1>\n<h1 style=\"text-align: center;\"><strong><span style=\"color: #000000;\">(formerly Sperrm\u00f6rtel Fein)\u00a0<\/span><\/strong><\/h1>\n<h5 style=\"text-align: center;\">FINE-GRAINED REPAIR MORTAR<\/h5>\n<p>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text css_animation=\"none\"]<a href=\"https:\/\/www.sanier.pl\/sklep\/?s=bostik&amp;post_type=product\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-258966 size-medium aligncenter\" src=\"https:\/\/www.sanier.pl\/wp-content\/uploads\/2022\/07\/Bostik_Logo_Header-300x121.png\" alt=\"bostik logo\" width=\"300\" height=\"121\" srcset=\"https:\/\/www.sanier.pl\/wp-content\/uploads\/2022\/07\/Bostik_Logo_Header-300x121.png 300w, https:\/\/www.sanier.pl\/wp-content\/uploads\/2022\/07\/Bostik_Logo_Header-800x324.png 800w, https:\/\/www.sanier.pl\/wp-content\/uploads\/2022\/07\/Bostik_Logo_Header-768x311.png 768w, https:\/\/www.sanier.pl\/wp-content\/uploads\/2022\/07\/Bostik_Logo_Header-700x283.png 700w, https:\/\/www.sanier.pl\/wp-content\/uploads\/2022\/07\/Bostik_Logo_Header.png 842w\" sizes=\"auto, (max-width:767px) 300px, 300px\" \/><\/a>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_separator style=\"dashed\"][vc_empty_space height=\"64px\"][\/vc_column][\/vc_row][vc_row][vc_column width=\"1\/4\"][vc_single_image image=\"261705\" img_size=\"medium\" style=\"vc_box_rounded\"][\/vc_column][vc_column width=\"3\/4\"][vc_column_text]<\/p>\n<h3><b><i>BOSTIK BLOCK C781 TERRA LOCK XS\u00a0 (formerly Sperrm\u00f6rtel Fein)<\/i><\/b><\/h3>\n<p><strong>BOSTIK BLOCK C781 TERRA LOCK XS<\/strong> (formerly <strong>Sperrm\u00f6rtel Fein<\/strong>) is a versatile, fine-grained repair mortar. This product is designed for filling and plastering gaps and uneven surfaces. It is ideal for grouting walls, filling non-working cracks, and creating chamfers. <strong>Sperrm\u00f6rtel<\/strong> is not suitable as a barrier against capillary rising moisture, nor is it suitable for anhydrite or magnesite screeds.[\/vc_column_text][vc_column_text]<\/p>\n<h3><strong>APPLICATION<\/strong><\/h3>\n<ul>\n<li>Mortar for walls and floors<\/li>\n<li>Suitable for grouting walls<\/li>\n<li>Used for filling non-working cracks<\/li>\n<li>Ideal for creating chamfers<\/li>\n<li>Used for repairing plinths and concrete surfaces<\/li>\n<li>Can be used as plaster in damp environments<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h4><strong>Surface Preparation:<\/strong><\/h4>\n<p>The substrate should be strong and stable, free from anti-adhesion layers (dust, cement laitance, etc.). Before applying the mortar, the surface should be moistened with water or a bonding-enhancing emulsion, such as <strong>BOSTIK MIX A793<\/strong> (formerly <strong>Haftemulsion-Konzentrat<\/strong>). When used as a surface cement plaster, it is recommended to first apply <strong>BOSTIK RENO C761 FINISH<\/strong> (formerly <strong>Spritzbewurf WTA<\/strong>) to the substrate.[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_empty_space][\/vc_column][vc_column][vc_separator style=\"dashed\"][\/vc_column][\/vc_row][vc_row][vc_column width=\"2\/3\"][vc_column_text]<\/p>\n<h3><strong>FEATURES OF BOSTIK BLOCK C781 TERRA LOCK XS<\/strong><\/h3>\n<ul>\n<li>Versatility<\/li>\n<li>Fine-grained structure<\/li>\n<li>Good adhesion<\/li>\n<li>Resistant to seawater<\/li>\n<li>Creates a smooth surface<\/li>\n<\/ul>\n<p>[\/vc_column_text][\/vc_column][vc_column width=\"1\/3\"][vc_single_image image=\"261705\" img_size=\"medium\"][\/vc_column][\/vc_row][vc_row][vc_column][vc_separator style=\"dashed\"][vc_empty_space][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text]<\/p>\n<h3><strong>Instructions for Use:<\/strong><\/h3>\n<p>Pour the contents of the mortar bag into a container and mix with clean water until a smooth, homogeneous consistency is achieved. To improve adhesion, increase flexibility, and enhance the waterproofing properties of the mortar, part of the mixing water can be replaced with <strong>Haftemulsion-Konzentrat<\/strong>. After mixing, protect the mortar from rapid water evaporation, rain, and freezing.[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_separator style=\"dashed\"][vc_empty_space][\/vc_column][\/vc_row][vc_row][vc_column width=\"1\/3\"][vc_column_text]<\/p>\n<h4><strong>TOOLS<\/strong><\/h4>\n<ul>\n<li>Stainless steel spatula<\/li>\n<\/ul>\n<p>[\/vc_column_text][\/vc_column][vc_column width=\"1\/3\"][vc_column_text]<\/p>\n<h4>CONSUMPTION<\/h4>\n<p>[\/vc_column_text][vc_raw_html]JTNDdGFibGUlM0UlMEElM0N0Ym9keSUzRSUwQSUzQ3RyJTNFJTNDdGQlM0UlM0MlMkZ0ZCUzRSUzQ3RkJTNFWnUlQzUlQkN5Y2llJTIwa2clMkZtMiUzQyUyRnRkJTNFJTNDJTJGdHIlM0UlMEElM0N0ciUzRSUzQ3RkJTNFVWJ5dGtpJTIwJTNDJTJGdGQlM0UlM0N0ZCUzRTElMkM4JTIwa2clMkZsJTNDJTJGdGQlM0UlM0MlMkZ0ciUzRSUwQSUzQ3RyJTNFJTNDdGQlM0VDb2slQzMlQjMlQzUlODIlMjAlMjg1Y20lMjklM0MlMkZ0ZCUzRSUzQ3RkJTNFMmtnJTJGbWIlM0MlMkZ0ZCUzRSUzQyUyRnRyJTNFJTBBJTNDJTJGdGJvZHklM0UlM0MlMkZ0YWJsZSUzRSUwQQ==[\/vc_raw_html][\/vc_column][vc_column width=\"1\/3\"][vc_column_text]<\/p>\n<h4>DOCUMENTS<\/h4>\n<p><a href=\"https:\/\/www.bostik.com\/files\/live\/sites\/shared_bostik\/files\/documents-brochures\/Poland\/Documents\/TDS\/Bostik-Poland-Seal-and-Block-Block-C781-Terra-Lock-XS-tds.pdf\" target=\"_blank\" rel=\"noopener\">Technical data sheet <\/a><\/p>\n<p><a href=\"https:\/\/www.bostik.com\/files\/live\/sites\/shared_bostik\/files\/documents-brochures\/Poland\/Documents\/SDS\/Bostik-Poland-Seal-and-Block-Block-C781-Terra-Lock-XS-sds.pdf\" target=\"_blank\" rel=\"noopener\">Safety data sheet<\/a>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_empty_space height=\"64px\"][vc_column_text]TAG: hydroizolacja, uszczelnianie, fundament, piwnica, materia\u0142y bitumiczne, membrana, emulsja, woda gruntowa, wilgo\u0107, izolacja, \u015bciana wilgotna, mokry chudziak, grunt bitumiczny, Bostik, hydroizolacja zewn\u0119trzna, hydroizolacja wewn\u0119trzna, Izolacja pozioma, izolacja pionowa, izolacja coko\u0142owa, hydroizolacja pozioma, hydroizolacja pionowa, hydroizolacja coko\u0142owa, faseta fundamentowa, zaprawa hydroizolacyjna, zaprawa uszczelniaj\u0105ca, zaprawa przeciwwilgociowa, zaprawa wodoszczelna, ple\u015b\u0144 na \u015bcianie, zabezpieczenie \u015bcian, system hydroizolacji, produkt uszczelniaj\u0105cy, masa KMB, polimerowo bitumiczna, lepik asfaltowo-kauczukowy, izolacja parochronna, izolacja przeciwwodna, hydroizolacja piwnicy od zewn\u0105trz, hydroizolacja dwusk\u0142adnikowa, tasma hydroizolacja, hydroizolacja chudziaka, hydroizolacja jednosk\u0142adnikowa, hydroizolacja p\u0142yty fundamentowej, hydroizolacja fundament\u00f3w w starym domu, hydroizolacja betonu, izolacja przeciwwodna, izolacja przeciwwodna fundament\u00f3w, ci\u0119\u017cka izolacja przeciwwodna, ci\u0119\u017cka izolacja przeciwwodna fundament\u00f3w, izolacja przeciwwodna piwnicy, izolacja przeciwwodna p\u0142yty fundamentowej, izolacja przeciwwodna typu ci\u0119\u017ckiego, izolacja przeciwwodna posadzki w piwnicy, hydroizolacja przeciwwodna, izolacja przeciwwodna pionowa, ta\u015bma uszczelniaj\u0105ca przeciwwodna, naprawa izolacji poziomej, naprawa izolacji pionowej, naprawa izolacji fundamentu, hydroizolacj\u0119, hydroizolacje,[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n","protected":false},"excerpt":{"rendered":"<p><strong>BOSTIK BLOCK C781 TERRA LOCK XS<\/strong> (formerly <strong>Sperrm\u00f6rtel Fein<\/strong>) is a fine-grained, polymer-modified repair mortar. This versatile product is designed for surface leveling, including the renovation of plinths and concrete, as well as for use as plaster in damp environments. <strong>Sperrm\u00f6rtel Fein<\/strong> is also ideal for grouting walls, filling non-working cracks, and creating chamfers.<\/p>\n","protected":false},"featured_media":273486,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[604,603,600,610,649,651,756,755],"product_tag":[613,757],"class_list":{"0":"post-276207","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bestseller-en","7":"product_cat-bostik-en","8":"product_cat-hydroizolacja-en","9":"product_cat-hydroizolacje-zbiornikow-i-kanalizacji-en","10":"product_cat-mineralne-materialy-en","11":"product_cat-ochrona-i-naprawa-betonu-en","12":"product_cat-zaprawy-naprawcze-i-szpachle-en","13":"product_cat-zaprawy-wodoszczelne-en","14":"product_tag-bostik-en","15":"product_tag-sperrmortel-en","16":"product_shipping_class-latwa-wysylka-en","18":"first","19":"instock","20":"taxable","21":"shipping-taxable","22":"purchasable","23":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/www.sanier.pl\/en\/wp-json\/wp\/v2\/product\/276207","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sanier.pl\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.sanier.pl\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sanier.pl\/en\/wp-json\/wp\/v2\/comments?post=276207"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.sanier.pl\/en\/wp-json\/wp\/v2\/media\/273486"}],"wp:attachment":[{"href":"https:\/\/www.sanier.pl\/en\/wp-json\/wp\/v2\/media?parent=276207"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.sanier.pl\/en\/wp-json\/wp\/v2\/product_brand?post=276207"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.sanier.pl\/en\/wp-json\/wp\/v2\/product_cat?post=276207"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.sanier.pl\/en\/wp-json\/wp\/v2\/product_tag?post=276207"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}