retaining wall caps


Old 09-26-08, 05:14 PM
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retaining wall caps

I want to put a cap on my retaining wall. However the only ones I can find don't have the ridge on the bottom of the back to latch the block to the block underneath it. They seem to just be flat. How do they hold? Any other ideas on what I could use as a cap?
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Old 09-27-08, 04:59 AM
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It sounds like your wall is made of pre-cast concrete blocks. If you are using the smaller blocks like they sell at popular home centers (Lowes or Home Depot) I've seen people glue them down with construction adhesive. With the larger commercial sized blocks the weight of the caps (about 40 pounds) is usually enough to hold them in place.
Old 09-27-08, 08:18 AM
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retaining wall caps

Silicone adhesive is recommended for holding caps in place. It does get as hard and allows small movement without breaking.

Old 09-28-08, 03:23 PM
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We use Sonneborn NP1, and apply several nickel sized dots. Never used silicone, but I think almost any urethane would also work well.

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