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Gaps Around External Pipes

Problem:
The installation of a new bathroom pipe has caused waste-pipes to be relocated, leaving gaps in the external brickwork.

Fix it with:
Expanding Foam Polyfilla

You can do it:
Moisten the surface to be filled with water (a plant sprayer is ideal), hold the can of filler upside down and directing the applicator nozzle inside the hole, start to fill. Don't be too over zealous as this product expands 2.5 times bigger than the amount your start with! Leave it to expand and cure for at least 20 minutes, after which it can be cut with a sharp knife to level with the brickwork. Leave overnight to cure fully, then apply paint to the repair to completely cover it.