Should black Bitumen DPC sealer apply to newly replaced class A DPC engineering bricks?

Question

Landscaper suggests to apply black Bitumen DPC sealer to the newly replaced DPC bricks to add a protective layer of protection. Will it trap moisture inside the bricks and cause damage? I think Engineering bricks are already highly resistant to water.

James · Answer

Should not need bitch on class A bricks as they do not adsorb water

Aaron · Answer

Engineering bricks are very resistant to water however you must not cover your top blue as moisture may work its way through your mortar.

So in my opinion a Bitumen sealer would not be needed on the understanding that the top blue remains exposed

Harry · Answer

Engineering brick are very water resistant anyway membrane would be the better solution

Stephen · Answer

In my experience It's not recommended like you sead engineering bricks are designed not to hold water

Dean · Answer

, you should not apply black bitumen sealer to the external face of newly replaced Class A DPC engineering bricks. Engineering bricks are a rigid DPC material due to their very low water absorption and high density; they are designed to be left exposed to the air to "breathe" and allow any trapped moisture to evaporate naturally.

Should black Bitumen DPC sealer apply to newly replaced class A DPC engineering bricks?

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