Best Damp Proofing & Waterproofing UK (2026) — Page 4
Damp-proof membranes and waterproofing treatments.
Read our full Best Damp Proofing & Waterproofing UK (2026) guide.

#19 Pick
Damp Proof Membrane Black Polythene Sheeting Roll DPM B2C 5m Wide 300MU Various Lengths 1m - 25m (8m x 5m)Rated 4.4 out of 5 stars (329)
£31.48
Pros
- 300 micron LDPE sheeting gives a strong anti-moisture layer under floors, screeds and slabs
- 5m width covers larger sub-floor areas with fewer joins
- Custom length options let buyers order the exact coverage they need
Cons
- Heavy roll needs at least two people to move and unroll safely

#20 Pick
DPC Damp Proof Course Membrane ~ 30m Roll ~ 100mm 112mm 150mm 300mm 450mm 600mm Available (600mm x 30m)Rated 4.2 out of 5 stars (10)
£25.99
Pros
- BBA-approved DPC membrane meets BS 6515:1984 for damp proof courses
- 600mm width suits standard cavity wall damp course installation
- 30m roll length reduces the number of joins needed along a wall run
Cons
- Narrower widths of the same range suit different jobs, so measure before ordering

#21 Pick
Technoseal Professional Damp Proof Waterproofing Paint 5L White For Walls & FloorsRated 4.5 out of 5 stars (110)
Currently unavailable
Pros
- Fast-drying, brush, roller or spray-applied damp-proof waterproofing membrane
- Suitable for masonry both above and below ground level
- Solvent-free, non-toxic formula is safer to use in occupied rooms
Cons
- 5L tin only comes in white, so darker or feature walls need a further coat of paint