How to seal a brick paving edge against water seepage?

Question

What is the best product to seal a brick paving edge against water seepage between the edge of brick paving and concrete slab behind Ekodeck cladding? There is an under-deck storage behind where rain seeps in. There is a hole on the far left edge as per attached detail photo.

With thanks.

Joseph15 · Answer

Hi Mitchell,

Thank you for the prompt response and helpful advice.

Cheers.

MitchellMc · Answer

Hi @Joseph15,

Sealing that joint completely is likely to be a bit tricky, but there are some steps you can take. You could apply a bead of Sikaflex 11FC along the joint and fill the hole. This will help reduce water ingress. However, if you’re noticing water pooling along this edge, the bigger issue may be the slope of the paving. In that case, you might need to regrade the pavers so that water naturally runs away from the joint instead of toward it. Combining the sealant with proper drainage is usually the most effective way to manage water in these types of situations.

After you've sealed the joint, you might like to glue an aluminium angle under the Ekodeck, which will act as a bit of a waterstop. Any water that runs in that direction will be stopped at the angle, instead of reaching the joint.

Please let me know if you have any questions.

Mitchell