{"product_id":"dimple-drainage-mat","title":"MAXKOSKO Dimple Drainage Mat for Crawl Spaces, Basements \u0026 Foundations, HDPE Vapor Barrier Underlayment","description":"\u003cdiv class=\"mk-product-content\"\u003e\n\u003c!-- ==============================\n  Overview\n  ============================== --\u003e\n\u003cdiv class=\"mk-overview\"\u003e\n\u003ch2\u003eHDPE Dimple Drainage Mat for Crawl Spaces, Basements \u0026amp; Foundations\u003c\/h2\u003e\n\u003cp\u003eCreate a continuous air and drainage space beneath a vapor barrier. The raised HDPE dimples help incidental water move toward an existing drain or sump while shielding the liner from rough ground and jobsite wear.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0733\/9684\/6865\/files\/Drainage_Mat_A_1.jpg?v=1790758563\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cul class=\"mk-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo Roll Sizes:\u003c\/strong\u003e Choose 2 ft × 50 ft for narrow runs or 4 ft × 50 ft for faster coverage with fewer seams.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContinuous Drainage Path:\u003c\/strong\u003e Raised dimples create channels beneath the crawl space liner.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVapor Barrier Protection:\u003c\/strong\u003e Adds a rigid buffer between the liner and the prepared substrate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Compressive Strength:\u003c\/strong\u003e Rated at 21.8-58.0 psi \/ 150-400 kPa.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVirgin HDPE:\u003c\/strong\u003e Durable material for crawl space, basement, and foundation moisture-management systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Temperature Range:\u003c\/strong\u003e Listed for -40°F to 176°F \/ -40°C to 80°C.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"mk-feature-grid\"\u003e\n\u003cdiv class=\"mk-feature-card\"\u003e\n\u003ch3\u003eMoves Incidental Water\u003c\/h3\u003e\n\u003cp\u003eCreates an open path toward a perimeter drain, collection point, or sump area.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mk-feature-card\"\u003e\n\u003ch3\u003eProtects the Liner\u003c\/h3\u003e\n\u003cp\u003eHelps reduce contact with rough surfaces, sharp debris, and normal installation wear.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mk-feature-card\"\u003e\n\u003ch3\u003eBuilt for Encapsulation\u003c\/h3\u003e\n\u003cp\u003eInstalls below a compatible vapor barrier or crawl space liner.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mk-feature-card\"\u003e\n\u003ch3\u003eSimple Roll-Out Setup\u003c\/h3\u003e\n\u003cp\u003ePrepare the surface, lay dimples down, overlap the sheets, tape the seams, and add the liner.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mk-section\"\u003e\n\u003cp\u003e\u003cstrong\u003eSelection tip:\u003c\/strong\u003e Measure the project area and include extra material for 2-3 rows of overlap, edge fitting, and trimming. Actual coverage will be lower than the nominal roll area.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- ==============================\n  Important Before Ordering\n  ============================== --\u003e\n\u003cdiv class=\"mk-section\"\u003e\n\u003ch2\u003eImportant Before Ordering\u003c\/h2\u003e\n\u003cdiv class=\"mk-warning-card\"\u003e\n\u003ch3\u003ePlan the Complete Drainage System\u003c\/h3\u003e\n\u003cul class=\"mk-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrainage Outlet Required:\u003c\/strong\u003e The mat creates a path for water; it does not remove water by itself. Plan a suitable perimeter drain, collection point, or sump system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot a Vapor Barrier:\u003c\/strong\u003e Install a compatible vapor barrier or crawl space liner above the mat.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot Primary Waterproofing:\u003c\/strong\u003e Do not use this mat as a substitute for a required waterproofing membrane.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrepare the Substrate:\u003c\/strong\u003e Remove sharp rocks, debris, and objects that could damage the mat or liner. Level obvious high spots.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAllow for Overlap:\u003c\/strong\u003e Adjacent sheets must overlap by 2-3 rows of dimples.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtect from Sunlight:\u003c\/strong\u003e Keep unused or exposed material away from prolonged direct sunlight. Store rolls dry and covered.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ==============================\n  Applications\n  ============================== --\u003e\n\u003cdiv class=\"mk-section\"\u003e\n\u003ch2\u003eRecommended Applications\u003c\/h2\u003e\n\u003cdiv class=\"mk-feature-grid\"\u003e\n\u003cdiv class=\"mk-feature-card\"\u003e\n\u003ch3\u003eCrawl Space Encapsulation\u003c\/h3\u003e\n\u003cp\u003eUse as a drainage mat under a vapor barrier to create channels below the liner.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mk-feature-card\"\u003e\n\u003ch3\u003eBasement Moisture Management\u003c\/h3\u003e\n\u003cp\u003eAdd a drainage and air space within a properly designed basement water-management system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mk-feature-card\"\u003e\n\u003ch3\u003eFoundation Drainage Protection\u003c\/h3\u003e\n\u003cp\u003eSupport compatible foundation drainage assemblies and help protect adjacent barrier materials.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mk-feature-card\"\u003e\n\u003ch3\u003eVapor Barrier Underlayment\u003c\/h3\u003e\n\u003cp\u003eSeparate the liner from rough prepared surfaces and reduce direct jobsite wear.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ==============================\n  Specifications\n  ============================== --\u003e\n\u003cdiv class=\"mk-section\"\u003e\n\u003ch2\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0733\/9684\/6865\/files\/Drainage_Mat_A_2.jpg?v=1790758632\" alt=\"\"\u003e\u003c\/h2\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv class=\"mk-spec-table-wrapper\"\u003e\n\u003ctable class=\"mk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh-profile dimple drainage mat \/ vapor barrier underlayment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVirgin high-density polyethylene (HDPE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable Sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 ft × 50 ft and 4 ft × 50 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Roll Area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100 sq ft or 200 sq ft before overlap and trimming\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompressive Strength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e21.8-58.0 psi \/ 150-400 kPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-40°F to 176°F \/ -40°C to 80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInstallation Direction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFor horizontal floor applications, install with dimples facing down toward the prepared substrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSheet Joint\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOverlap adjacent sheets by 2-3 rows of dimples and secure with compatible heavy-duty seam tape\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePrimary Uses\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCrawl space drainage, basement moisture management, foundation drainage protection, and protection beneath vapor barriers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ==============================\n  Installation\n  ============================== --\u003e\n\u003cdiv class=\"mk-collapsible-section\"\u003e\n\u003cdetails class=\"mk-collapsible\"\u003e\n\u003csummary\u003e\u003cspan class=\"mk-collapsible-title\"\u003eInstallation Guide\u003c\/span\u003e \u003cspan class=\"mk-collapsible-action\"\u003e \u003cspan class=\"mk-collapsible-hint-closed\"\u003eView Instructions\u003c\/span\u003e \u003cspan class=\"mk-collapsible-hint-open\"\u003eHide Instructions\u003c\/span\u003e \u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"mk-collapsible-body\"\u003e\n\u003col class=\"mk-list\"\u003e\n\u003cli\u003eRemove sharp rocks, debris, and objects that could damage the drainage mat or vapor barrier.\u003c\/li\u003e\n\u003cli\u003eLevel obvious high spots and establish a suitable path toward the drainage outlet.\u003c\/li\u003e\n\u003cli\u003eUnroll the mat with the dimples facing down toward the prepared substrate.\u003c\/li\u003e\n\u003cli\u003eOverlap adjacent sheets by 2-3 rows of dimples. Align and interlock the dimples.\u003c\/li\u003e\n\u003cli\u003eSecure the overlapping seams with compatible heavy-duty seam tape. Press along the full joint.\u003c\/li\u003e\n\u003cli\u003eInstall the vapor barrier or crawl space liner over the mat according to its manufacturer's instructions.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cdiv class=\"mk-warning-card\"\u003e\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul class=\"mk-list\"\u003e\n\u003cli\u003eKeep perimeter drains, collection points, and sump areas clear.\u003c\/li\u003e\n\u003cli\u003eDo not block the intended water path.\u003c\/li\u003e\n\u003cli\u003eProtect the mat and liner from sharp tools and concentrated loads during installation.\u003c\/li\u003e\n\u003cli\u003eFollow the applicable project design and local requirements for foundation wall installations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c!-- ==============================\n  System Expectations\n  ============================== --\u003e\n\u003cdiv class=\"mk-collapsible-section\"\u003e\n\u003cdetails class=\"mk-collapsible\"\u003e\n\u003csummary\u003e\u003cspan class=\"mk-collapsible-title\"\u003eWhat This Drainage Mat Does\u003c\/span\u003e \u003cspan class=\"mk-collapsible-action\"\u003e \u003cspan class=\"mk-collapsible-hint-closed\"\u003eView Details\u003c\/span\u003e \u003cspan class=\"mk-collapsible-hint-open\"\u003eHide Details\u003c\/span\u003e \u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"mk-collapsible-body\"\u003e\n\u003cp\u003eThis dimple drainage mat is one part of a complete moisture-management system. It creates channels and protects the liner, but it does not stop the source of water or pump water from the space.\u003c\/p\u003e\n\u003cul class=\"mk-list\"\u003e\n\u003cli\u003eWater must have a clear path to a suitable drain, collection point, or sump.\u003c\/li\u003e\n\u003cli\u003eThe prepared surface and project slope affect drainage performance.\u003c\/li\u003e\n\u003cli\u003eA compatible vapor barrier is still required above the mat when the project calls for vapor control.\u003c\/li\u003e\n\u003cli\u003ePrimary waterproofing, active leaks, and structural water problems must be addressed separately.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c!-- ==============================\n  FAQ\n  ============================== --\u003e\n\u003cdiv class=\"mk-section mk-faq\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhich roll size should I choose?\u003c\/summary\u003e\n\u003cp\u003eChoose 2 ft × 50 ft for narrow runs, small zones, or easier handling in tight spaces. Choose 4 ft × 50 ft for larger open areas and fewer seams. Include extra material for overlap and trimming.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes the drainage mat go under the vapor barrier?\u003c\/summary\u003e\n\u003cp\u003eYes. For crawl space floor applications, install the dimple drainage mat on the prepared substrate and place the compatible vapor barrier or crawl space liner above it.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhich way should the dimples face?\u003c\/summary\u003e\n\u003cp\u003eFor horizontal floor applications, install the mat with the dimples facing down toward the prepared ground or substrate.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I join two sheets?\u003c\/summary\u003e\n\u003cp\u003eOverlap adjacent sheets by 2-3 rows of dimples. Align and interlock the dimples, then secure the full seam with compatible heavy-duty seam tape.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill this mat waterproof my crawl space or basement?\u003c\/summary\u003e\n\u003cp\u003eNo. The mat creates a drainage and air space within a properly designed system. It does not replace a vapor barrier, primary waterproofing membrane, perimeter drain, or sump pump.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhere does the water go?\u003c\/summary\u003e\n\u003cp\u003eThe raised dimples create channels that help incidental water move toward a planned perimeter drain, collection point, or sump area. The outlet must be established before installation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I cut the mat to fit?\u003c\/summary\u003e\n\u003cp\u003eYes. Trim it to fit the project area while preserving the required overlap and a continuous route to the drainage outlet. Remove sharp cutoffs and debris before installing the liner.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"MAXKOSKO","offers":[{"title":"2' x 50'","offer_id":67600568287505,"sku":"2' x 50'","price":89.99,"currency_code":"USD","in_stock":false},{"title":"4' x 50'","offer_id":67600568320273,"sku":"4' x 50'","price":149.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/9684\/6865\/files\/DrainageMat_1.jpg?v=1790757744","url":"https:\/\/maxkosko.com\/products\/dimple-drainage-mat","provider":"MAXKOSKO","version":"1.0","type":"link"}