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Contact cement for foundation dimple board

Home Improvement Asked by Bill Tarbell on September 29, 2021

I have a cinder block foundation and plan on excavating to apply a 3 layered approach toward waterproofing it.

  1. Paint on asphalt sealer (aka tar) – Henry 101
  2. Bituthene adhesive membrane (similar to ice/water shield) – Grace Bituthene 4000
  3. HDPE dimple board – unsure which brand i’ll buy, but here’s an example – DMX AG It will be installed with the points facing the wall (smooth side facing out).

Since i’m doubling up on sealant technology with the asphalt and the adhesive membrane I’d really like to not puncture it by nailing/tapConning the dimple board to the wall. I saw that the Delta system has adhesive spikes you can use (can’t seem to find a place to buy them, I’ve seen the ballpark at 100 for $250), and then i saw that PolyWall offers a sprayable adhesive for their dimple board ($600 per cylinder!). That made me wonder.. Would regular contact cement work ($150 for 5gal)? The kind that you typically use for adhering a countertop laminate to the substrate is what i had in mind. I assume it really only has to hold the dimple board on the wall until the backfill is in place.. but perhaps it needs to also withstand future frost heaving forces?

One Answer

We had a dimple board, well came on a roll so started one corner round to the other on 3 sides so no breaks at all.

We used a 2*1 to secure it to the wall at the top and allowed some extra which was pulled up as we back filled

Once the filling was complete the 2*1 was removed and only a few screw holes were left in a place that makes no difference.

Answered by Solar Mike on September 29, 2021

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