Dimple Mat And Foam Board

The protective board can a dimpled mat or a foam or fibrous insulation board.

Dimple mat and foam board.

The dimpled drainage board can help reduce intermittent hydrostatic pressure because it moves water away before pressure can build against the foundation. A drainage mesh or dimple plastic mat is installed over the existing slab then covered with rigid foam and a floating subfloor see figure 1. My current plan is to construct the foundation wall apply a parge coat probably with quikrete surface bond cement coat that with thoroseal then secure a superseal dimple mat up to grade then 3 of foam board or roxul insulation before backfilling. 50 50 50 roll height.

Other installers put the dimple mat on the exterior side of the rigid foam between the rigid foam and the backfill. Dimpled membrane made from high density polyethylene hdpe a co extruded product 60 recycled hdpe and 40 virgin hdpe. Virgin hdpe outside layer and recycled hdpe core make it the most durable dimpled membrane on the market. Superseal dimpled membrane provides the maximum protection for your insulated concrete forms and is fast becoming the preferred choice.

2x4 framing wood or metal haven t decided on top of dimplemat with insulations between studs with drywall on top. Without a protection board the spray on coating could be damaged from backfill. A dampproofing coating is advisable behind drainage boards to prevent incidental moisture infiltration as long as it doesn t interfere with performance or the manufacturer s specifications. One test i apply is if it sounds too good to be true it probably is.

Some installers sandwich the dimple mat between the concrete wall and the rigid foam. I ll be using metal siding above grade. Mar flex neofoam insulation board with neopor technology is a astm 578 pib 3028 expandable polystyrene foam board that has considerably better thermal insulation capability than. 6 9 8 4 dimple height.

The detail below shows the latter approach. The above slab drainage layer must be connected to an interior sump pit. Spray on waterproofing may require a protection board on the icf due to its softness. Vacuum formed dimpled pattern allows incidental water to flow into footing drain.

Geo mat 6 9 geo mat 8 geo mat 4 color. 1 xps over dimple mat over the floor. Platon is made from tough durable high density polyethylene hdpe certainteed platon is a waterproofing membrane that provides superior moisture protection for all types of foundations in residential basement applications. Some elastomeric coatings claim that they do not need a protective layer and some dimpled mats are marketed as complete waterproofing system without a membrane but i am skeptical.