{"id":454,"date":"2025-11-18T01:00:16","date_gmt":"2025-11-18T01:00:16","guid":{"rendered":"http:\/\/2fdesign.it\/proind\/?post_type=product&p=454\/"},"modified":"2026-01-29T17:23:20","modified_gmt":"2026-01-29T17:23:20","slug":"siriobeton-idr-nhl","status":"publish","type":"product","link":"https:\/\/proind.it\/en\/prodotto\/siriobeton-idr-nhl\/","title":{"rendered":"Dehumidifying and restorative plaster"},"content":{"rendered":"

[vc_row][vc_column][vc_column_text]SIRIOBETON IDR NHL is a renovation plaster mortar for \u201cmanual\u201d application, designed for the restoration of masonry affected by rising damp due to capillary action. It is a macroporous premixed product based on natural hydraulic lime NHL 3.5, pozzolanic binders, selected and dried spheroidal siliceous sands, with the addition of special air-entraining additives.<\/strong><\/p>\n

SIRIOBETON IDR NHL is breathable, anti-condensation, and water-repellent. It is suitable for old and new masonry made of stone, brick, tuff, and mixed materials.<\/p>\n

Directions for use<\/strong>: during application and drying, the ambient and substrate temperature must be between +5 \u00b0C and +35 \u00b0C. During drying and curing, protect from frost and excessive dryness, as well as from washout and extreme weather events.
\nSIRIOBETON IDR NHL is mixed and applied with a trowel: apply a thickness of at least 2 cm. If greater thicknesses are required, wait for the first layer to begin setting and then apply a second layer. Do not float or smooth the surface so as not to block the necessary porosity. Allow the plaster to fully cure (minimum 21 days) before applying any finish\/paint. Use only breathable paints such as lime paint, siloxane paint, or acrylic-siloxane paint. Do not use acrylic, quartz, or elastomeric paints.<\/p>\n

Substrate preparation<\/strong>: the substrate must be dry, sound, free from foreign materials (dust, oil, soot, algae, efflorescence, release agents, debonding agents, etc.) and must have a pull-off strength of at least 0.25 N\/mm\u00b2. Remove any films of debonding materials; friable or powdering surfaces must be consolidated with a fixative or removed and restored.
\nMasonry to be renovated must be exposed by removing all traces of the old plaster up to at least +50 cm above the maximum height reached by moisture (never apply at heights lower than 1 m). In the most compromised cases, thoroughly wash the substrate with potable water to remove salts. If the masonry consistency allows, use high-pressure water cleaning. Wait for excess water to evaporate or remove it with cloths or compressed air. Only when the substrate is dry, begin applying SIRIOBETON IDR NHL in a \u201cleopard spot\u201d pattern to create an initial bonding layer. Allow to surface-dry, then proceed with the application of SIRIOBETON IDR NHL to thickness (maximum 2 cm per single coat).<\/p>\n

Consumption<\/strong>: approximately 12 kg\/m2<\/sup> of surface per 1 cm of thickness.<\/p>\n

Mixing water dosage<\/strong>: approximately 5.25 L per 25 kg bag (21%).<\/p>\n

Packaging<\/strong>: 25 kg bag.[\/vc_column_text][vc_btn title=”Download data sheet” color=”orange” link=”url:https%3A%2F%2Fproind.it%2Fwp-content%2Fuploads%2F2026%2F01%2FSIRIOBETON-IDR-NHL.pdf||target:%20_blank|”][\/vc_column][\/vc_row]<\/p>\n","protected":false},"excerpt":{"rendered":"

SIRIOBETON IDR NHL is a mortar for restoration plastering, used to repair masonry affected by rising damp due to capillary action.<\/p>\n","protected":false},"featured_media":3320,"template":"","meta":[],"product_brand":[],"product_cat":[114,123],"product_tag":[],"class_list":{"0":"post-454","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-construction-product-recovery","7":"product_cat-lime-based-anti-shrinkage-cement-mortars","9":"first","10":"instock","11":"shipping-taxable","12":"product-type-simple"},"yoast_head":"\nDehumidifying and restorative plaster - Proind<\/title>\n<meta name=\"description\" content=\"SIRIOBETON IDR NHL is a mortar for restoration plastering, used to repair masonry affected by rising damp due to capillary action.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/proind.it\/en\/prodotto\/siriobeton-idr-nhl\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Dehumidifying and restorative plaster\" \/>\n<meta property=\"og:description\" content=\"SIRIOBETON IDR NHL is a mortar for restoration plastering, used to repair masonry affected by rising damp due to capillary action.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/proind.it\/en\/prodotto\/siriobeton-idr-nhl\/\" \/>\n<meta property=\"og:site_name\" content=\"Proind\" \/>\n<meta property=\"article:modified_time\" content=\"2026-01-29T17:23:20+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/proind.it\/wp-content\/uploads\/2017\/06\/SIRIOBETON-IDR-NHL.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"557\" \/>\n\t<meta property=\"og:image:height\" content=\"800\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/proind.it\\\/en\\\/prodotto\\\/siriobeton-idr-nhl\\\/\",\"url\":\"https:\\\/\\\/proind.it\\\/en\\\/prodotto\\\/siriobeton-idr-nhl\\\/\",\"name\":\"Dehumidifying and restorative plaster - 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