How to gap between concrete slab and retaining wall?

JensonZ

I have a gap measuring 2cm wide by 5cm deep between the concrete slab and the retaining wall. It tends to trap leaves and debris. I'm looking for some kind of foam filler to fill the gap while still retaining its functionality - assume it's for expansion and drain. Thanks

MitchellMc

Welcome to the Bunnings Workshop community @JensonZ. It's brilliant to have you join us, and many thanks for your question about filling a gap.

We have expansion joint filler foam, which is used for this purpose. You'll only need a small amount in height, possibly 10-15mm. Cut it from the roll and compress it to fit in the gap. It will self-expand and lock into position.

If the gap is a full 20mm wide, you might have to double-up the foam.

Please let me know if you have any questions.

Mitchell