Protection Board
A sacrificial board or screed laid over a completed waterproofing membrane to shield it from mechanical damage by following trades or backfill.
On an actual building
Most below-grade and podium membranes that fail were damaged by another trade, not by water. Protection laid the same day the membrane is signed off removes that window entirely.
What we most often have to correct
That it is an optional extra. On a podium or basement it is the difference between an intact barrier and one with unrecorded punctures.
Terms that come up alongside this one
- Drainage Cell
A moulded void-forming panel laid over a waterproofing membrane beneath soil or paving, creating a continuous drainage path to outlets..
- HDPE Membrane
High-density polyethylene sheet with a coated face, laid before concrete is poured so that the concrete bonds mechanically to it..
- Box Type Waterproofing
A continuous barrier wrapping an entire below-grade structure — beneath the raft, up every retaining wall and sealed above ground level — so the structure effectively sits inside a sealed box..
Protection Board — questions we get asked
What does protection board mean in waterproofing?
A sacrificial board or screed laid over a completed waterproofing membrane to shield it from mechanical damage by following trades or backfill.
Why does protection board matter on a real project?
Most below-grade and podium membranes that fail were damaged by another trade, not by water. Protection laid the same day the membrane is signed off removes that window entirely.
What do people commonly get wrong about protection board?
That it is an optional extra. On a podium or basement it is the difference between an intact barrier and one with unrecorded punctures.
Have a building showing this?
If a term on this page describes something you are looking at, a site inspection will tell you how far it has gone and what it needs. It costs nothing.
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