{"id":22400,"date":"2026-05-13T15:43:53","date_gmt":"2026-05-13T13:43:53","guid":{"rendered":"https:\/\/roder.it\/inspection\/moisture-in-materials\/moisture-in-concrete-screed-and-building-materials\/"},"modified":"2026-11-11T10:28:25","modified_gmt":"2026-11-11T09:28:25","slug":"moisture-in-concrete-screed-and-building-materials","status":"publish","type":"page","link":"https:\/\/roder.it\/en\/inspection\/moisture-in-materials\/moisture-in-concrete-screed-and-building-materials\/","title":{"rendered":"Moisture in concrete, screed and building materials"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Moisture meters for concrete, screed and construction are specialised instruments for measuring the moisture content of building materials: structural concrete, cement and anhydrite screeds, plaster, bricks, blocks and construction materials. Checking moisture before laying a floor covering (parquet, porcelain stoneware, resins, paints) is essential to avoid delamination, lifting and trapped moisture that compromises the durability of the covering. The technologies used are varied and complementary: capacitive and resistive electronic meters, F2170 RH probes (the equilibrium method) and thermogravimetric balances (the CM or gravimetric method).  <\/p>\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<div class=\"wp-block-cover is-light popmake-11245\" style=\"border-width:1px;border-top-left-radius:10px;border-top-right-radius:10px;border-bottom-left-radius:10px;border-bottom-right-radius:10px;min-height:250px;aspect-ratio:unset;\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"213\" class=\"wp-block-cover__image-background wp-image-14896 size-large\" alt=\"banner aiuto nella scelta dello strumento oppure della tecnologia\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/banner_technical_support_choose_products-1024x213.png\" data-object-fit=\"cover\" srcset=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/banner_technical_support_choose_products-1024x213.png 1024w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/banner_technical_support_choose_products-300x63.png 300w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/banner_technical_support_choose_products-768x160.png 768w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/banner_technical_support_choose_products.png 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\" style=\"background-color:#d3d6dc\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-container-core-cover-is-layout-a304f9a9 wp-block-cover-is-layout-constrained\">\n<p class=\"has-text-align-right has-ti-fg-color has-text-color has-link-color wp-elements-1 wp-block-paragraph\" style=\"font-size:clamp(21.536px, 1.346rem + ((1vw - 3.2px) * 1.726), 35px);\"><strong>Would you like help choosing the right product ?<\/strong><\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-right is-layout-flex wp-container-core-buttons-is-layout-b507c051 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/roder.it\/en\/contacts\/\">Click here !<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<h2 class=\"wp-block-heading\">Electronic moisture meters for construction<\/h2><p class=\"wp-block-paragraph\">Capacitive electronic meters for construction use plate or ball sensors placed on the concrete surface: the electric field penetrates up to 30-50 mm and measures a change in dielectric constant proportional to the moisture. They are quick and non-destructive, ideal for scanning large areas and identifying locally wetter zones. They give values on a dimensionless scale (0-100, 0-200 depending on the model) or convert to moisture % by mass using calibration curves specific to the material. They are indicative: for formal quantitative measurements, standardised methods such as F2170 or CM are used.   <\/p><h2 class=\"wp-block-heading\">F2170 RH probes<\/h2><p class=\"wp-block-paragraph\">The in-situ RH (Relative Humidity) probe method, governed by ASTM F2170, is the international reference for accurately measuring concrete moisture before laying floor coverings. A hole is drilled in the concrete (to a depth of 40% of the slab thickness), a protective sleeve is inserted, and a capacitive humidity probe is placed inside. After 24-72 hours of stabilisation, the probe measures the relative humidity of the air inside the hole, in equilibrium with the surrounding concrete. The RH value obtained is compared with the covering manufacturer&#8217;s limits (typically \u2264 75-80% RH for parquet; \u2264 90% RH for epoxy resins).   <\/p><h2 class=\"wp-block-heading\">CM (carbide) method<\/h2><p class=\"wp-block-paragraph\">The CM (Calcium Carbide Method) is the traditional reference method in Europe for measuring the moisture of cement and anhydrite screeds. A sample of screed is taken and mixed with calcium carbide powder (CaC2) in a sealed metal bottle fitted with a pressure gauge: the water in the screed reacts with the CaC2 to produce acetylene gas (C2H2), whose measured pressure corresponds to the quantity of water in the sample. Modern CM kits are compact and portable, with conversion tables for calculating the moisture % by mass. The typical specifications for laying parquet are \u2264 2% for cement and \u2264 0.5% for anhydrite (expressed as total moisture, not to be confused with the F2170 figures, which are expressed as equilibrium RH).   <\/p><h2 class=\"wp-block-heading\">Thermogravimetric balances<\/h2><p class=\"wp-block-paragraph\">Laboratory thermogravimetric balances determine moisture by drying: the concrete or screed sample is weighed before and after oven drying at 105 \u00b0C to constant weight. The percentage difference gives the moisture by mass with excellent accuracy. The method is destructive and slow (24-48 hours) but is the reference for absolute precision. In construction it is used to validate electronic instruments and for formal analysis in the event of a dispute.   <\/p><h2 class=\"wp-block-heading\">Applications<\/h2><p class=\"wp-block-paragraph\">The applications include: quality control before laying parquet, porcelain stoneware, resins and floor paints (every covering requires properly dried screeds); checking structural concrete for durability and mechanical performance; inspection of rising damp in walls; monitoring the curing of concrete pours on site; checking moisture in plaster mortars before painting; and expert assessments and disputes over moisture problems in buildings.<\/p><h2 class=\"wp-block-heading\">Reference standards<\/h2><p class=\"wp-block-paragraph\">The main standards are: ASTM F2170 (in-situ RH probe, the US reference); UNI 10329 (calcium carbide CM method); ASTM D4263 (plastic sheet test for surface moisture); UNI EN 13892 (screeds, test measurements); BS 8203 (UK, substrate preparation for floor coverings); EN 14157 (concrete); ASTM E1907 (USA). The acceptance specifications are set by the manufacturers of the coverings and must be verified before laying. <\/p>\n<div class=\"wp-block-group roder-tramex-consigliati is-layout-flow wp-block-group-is-layout-flow\">\n<h2 class=\"wp-block-heading has-ti-accent-color has-text-color\" id=\"strumenti-consigliati\">Recommended Tramex instruments <a class=\"roder-up\" href=\"#\" title=\"Back to top\" aria-label=\"Torna all&#x2019;inizio della pagina\">\u2191 up<\/a><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The Tramex impedance moisture meters distributed by RODER for this quantity: technical data sheets on roder.it, availability and quotations on <a href=\"https:\/\/innovacheck.com\/catalogo-prodotti\/misuratori-di-umidita-e-igrometri\/\" target=\"_blank\" rel=\"noreferrer noopener\">innovacheck.com<\/a>.<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-17c5c485 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<div class=\"wp-block-group has-border-color is-layout-constrained wp-container-core-group-is-layout-4c96c1b2 wp-block-group-is-layout-constrained\" style=\"border-color:#225f78;border-width:2px;border-radius:14px;padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\">\n<div class=\"wp-block-group has-background is-content-justification-space-between is-nowrap is-layout-flex wp-container-core-group-is-layout-64b06f47 wp-block-group-is-layout-flex\" style=\"border-top-left-radius:11px;border-top-right-radius:11px;background-color:#225f78;padding-top:12px;padding-right:20px;padding-bottom:12px;padding-left:20px\">\n<div class=\"wp-block-group is-layout-constrained wp-container-core-group-is-layout-7b7bb4f4 wp-block-group-is-layout-constrained\">\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#cfe6f0;margin-top:0;margin-bottom:0;font-size:12px;font-weight:700;letter-spacing:1px;text-transform:uppercase\">Tramex \u00b7 catalogue product<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color wp-elements-2\" style=\"color:#ffffff;margin-top:0;margin-bottom:0;font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.769), 20px);\"><a href=\"https:\/\/roder.it\/en\/products\/moisture-meters\/moisture-meters-cme5\/\">Tramex CME5 \u2014 moisture meter for concrete and screeds<\/a><\/h3>\n<\/div>\n\n\n\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#ffffff;margin-top:0;margin-bottom:0;font-size:clamp(17.905px, 1.119rem + ((1vw - 3.2px) * 1.294), 28px);font-weight:700\">\u2192<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-columns are-vertically-aligned-center is-layout-flex wp-container-core-columns-is-layout-bf2022b5 wp-block-columns-is-layout-flex\" style=\"padding-top:16px;padding-right:18px;padding-bottom:16px;padding-left:18px\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:30%\">\n<figure class=\"wp-block-image size-large has-custom-border\"><a href=\"https:\/\/roder.it\/en\/products\/moisture-meters\/moisture-meters-cme5\/\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"1200\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/07\/tramex-cme5-cme5a_front_on_white_bg-web_image-1200x1200-1.webp\" alt=\"Tramex CME5\" class=\"has-border-color wp-image-16397\" style=\"border-color:#000000;border-width:1px;border-radius:10px;aspect-ratio:1;object-fit:cover\" srcset=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/07\/tramex-cme5-cme5a_front_on_white_bg-web_image-1200x1200-1.webp 1200w, https:\/\/roder.it\/wp-content\/uploads\/2026\/07\/tramex-cme5-cme5a_front_on_white_bg-web_image-1200x1200-1-300x300.webp 300w, https:\/\/roder.it\/wp-content\/uploads\/2026\/07\/tramex-cme5-cme5a_front_on_white_bg-web_image-1200x1200-1-1024x1024.webp 1024w, https:\/\/roder.it\/wp-content\/uploads\/2026\/07\/tramex-cme5-cme5a_front_on_white_bg-web_image-1200x1200-1-150x150.webp?crop=1 150w, https:\/\/roder.it\/wp-content\/uploads\/2026\/07\/tramex-cme5-cme5a_front_on_white_bg-web_image-1200x1200-1-768x768.webp 768w, https:\/\/roder.it\/wp-content\/uploads\/2026\/07\/tramex-cme5-cme5a_front_on_white_bg-web_image-1200x1200-1-800x800.webp?crop=1 800w, https:\/\/roder.it\/wp-content\/uploads\/2026\/07\/tramex-cme5-cme5a_front_on_white_bg-web_image-1200x1200-1-600x600.webp?crop=1 600w, https:\/\/roder.it\/wp-content\/uploads\/2026\/07\/tramex-cme5-cme5a_front_on_white_bg-web_image-1200x1200-1-400x400.webp?crop=1 400w, https:\/\/roder.it\/wp-content\/uploads\/2026\/07\/tramex-cme5-cme5a_front_on_white_bg-web_image-1200x1200-1-200x200.webp?crop=1 200w, https:\/\/roder.it\/wp-content\/uploads\/2026\/07\/tramex-cme5-cme5a_front_on_white_bg-web_image-1200x1200-1-120x120.webp?crop=1 120w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:70%\">\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#4a5b66;font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.128), 15px);\">Non-destructive analog Tramex moisture meter for concrete floors and screeds: instant, quantitative moisture content measurement referenced to the gravimetric method, carbide-method equivalent values and comparative readings per ASTM F2659.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-font-size\" style=\"font-size:14px;font-weight:700\"><a class=\"wp-block-button__link has-text-color has-background wp-element-button\" href=\"https:\/\/roder.it\/en\/products\/moisture-meters\/moisture-meters-cme5\/\" style=\"border-radius:8px;color:#ffffff;background-color:#225f78;padding-top:9px;padding-right:16px;padding-bottom:9px;padding-left:16px\">Find out more \u2192<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<div class=\"wp-block-group has-border-color is-layout-constrained wp-container-core-group-is-layout-4c96c1b2 wp-block-group-is-layout-constrained\" style=\"border-color:#225f78;border-width:2px;border-radius:14px;padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\">\n<div class=\"wp-block-group has-background is-content-justification-space-between is-nowrap is-layout-flex wp-container-core-group-is-layout-64b06f47 wp-block-group-is-layout-flex\" style=\"border-top-left-radius:11px;border-top-right-radius:11px;background-color:#225f78;padding-top:12px;padding-right:20px;padding-bottom:12px;padding-left:20px\">\n<div class=\"wp-block-group is-layout-constrained wp-container-core-group-is-layout-7b7bb4f4 wp-block-group-is-layout-constrained\">\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#cfe6f0;margin-top:0;margin-bottom:0;font-size:12px;font-weight:700;letter-spacing:1px;text-transform:uppercase\">Tramex \u00b7 catalogue product<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color wp-elements-3\" style=\"color:#ffffff;margin-top:0;margin-bottom:0;font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.769), 20px);\"><a href=\"https:\/\/roder.it\/en\/products\/moisture-meters\/moisture-meters-cmex5\/\">Tramex CMEX5 \u2014 digital concrete moisture meter with RH probes<\/a><\/h3>\n<\/div>\n\n\n\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#ffffff;margin-top:0;margin-bottom:0;font-size:clamp(17.905px, 1.119rem + ((1vw - 3.2px) * 1.294), 28px);font-weight:700\">\u2192<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-columns are-vertically-aligned-center is-layout-flex wp-container-core-columns-is-layout-bf2022b5 wp-block-columns-is-layout-flex\" style=\"padding-top:16px;padding-right:18px;padding-bottom:16px;padding-left:18px\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:30%\">\n<figure class=\"wp-block-image size-large has-custom-border\"><a href=\"https:\/\/roder.it\/en\/products\/moisture-meters\/moisture-meters-cmex5\/\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/07\/tramex-cmex5-cmex5_on_grey-web_image-600x600-1.webp\" alt=\"Tramex CMEX5\" class=\"has-border-color wp-image-16438\" style=\"border-color:#000000;border-width:1px;border-radius:10px;aspect-ratio:1;object-fit:cover\" srcset=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/07\/tramex-cmex5-cmex5_on_grey-web_image-600x600-1.webp 600w, https:\/\/roder.it\/wp-content\/uploads\/2026\/07\/tramex-cmex5-cmex5_on_grey-web_image-600x600-1-300x300.webp 300w, https:\/\/roder.it\/wp-content\/uploads\/2026\/07\/tramex-cmex5-cmex5_on_grey-web_image-600x600-1-150x150.webp?crop=1 150w, https:\/\/roder.it\/wp-content\/uploads\/2026\/07\/tramex-cmex5-cmex5_on_grey-web_image-600x600-1-400x400.webp?crop=1 400w, https:\/\/roder.it\/wp-content\/uploads\/2026\/07\/tramex-cmex5-cmex5_on_grey-web_image-600x600-1-200x200.webp?crop=1 200w, https:\/\/roder.it\/wp-content\/uploads\/2026\/07\/tramex-cmex5-cmex5_on_grey-web_image-600x600-1-120x120.webp?crop=1 120w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:70%\">\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#4a5b66;font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.128), 15px);\">Non-destructive multifunction digital Tramex moisture meter for concrete floors and screeds, with carbide-method equivalent values and ASTM F2659 comparative readings. With the optional probes it also measures in-situ relative humidity per ASTM F2170 and wood moisture. <\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-font-size\" style=\"font-size:14px;font-weight:700\"><a class=\"wp-block-button__link has-text-color has-background wp-element-button\" href=\"https:\/\/roder.it\/en\/products\/moisture-meters\/moisture-meters-cmex5\/\" style=\"border-radius:8px;color:#ffffff;background-color:#225f78;padding-top:9px;padding-right:16px;padding-bottom:9px;padding-left:16px\">Find out more \u2192<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Moisture meters specific to concrete, screed and building materials, F2170 RH probes and thermogravimetric balances.<\/p>\n","protected":false},"author":157040980,"featured_media":35845,"parent":19473,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_yoast_wpseo_focuskw":"concrete moisture meter","_yoast_wpseo_title":"Moisture in concrete, screed and building materials | RODER","_yoast_wpseo_metadesc":"Moisture meters for concrete, screeds, plaster and building materials: non-destructive moisture measurement before laying floors and coverings.","_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_wpcom_ai_launchpad_about_page":false,"_wpcom_ai_launchpad_gallery_page":false,"_wpcom_ai_launchpad_contact_page":false,"_wpcom_ai_launchpad_events_page":false,"_wpcom_ai_launchpad_video_page":false,"_wpcom_ai_launchpad_portfolio_piece":false,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"footnotes":""},"class_list":["post-22400","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Moisture in concrete, screed and building materials | RODER<\/title>\n<meta name=\"description\" content=\"Moisture meters for concrete, screeds, plaster and building materials: non-destructive moisture measurement before laying floors and coverings.\" \/>\n<meta name=\"robots\" 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