Home improvement waterproofing roll designed to form a continuous damp barrier beneath floors. Installers and DIYers gain reassurance with B2C Damp Proof Membrane, a heavy-duty roll that reduces damp-related delays. Does the specified thickness, tear strength and standards meet professional expectations?
⚡ At a Glance
- • Barrier Performance: High Sd value (83 m) and 0.3mm LDPE thickness deliver low vapour permeability and water tightness at 2 kPa
- • Best for: Builders, floor installers and DIY renovators needing wide-roll coverage for subfloor damp protection
- • Not ideal for: Permanent exposed installations or applications requiring structural support
LDPE membrane supplied as a 4 m wide roll with a listed 25 m option and various lengths available. Meets low-temperature flexibility (-25 °C), tear-strength and water-tightness parameters and is offered with ITB approval or produced to UKCE standards.
Effective moisture control - with high Sd value and water-tightness
Water vapour transmission is specified as Sd 83 m and the membrane is listed as water tight at 2 kPa. Those metrics indicate low permeability to ground moisture under floor constructions.
Reduces vapour drive into screeds and floor layers, helping prevent damp-related staining and degradation of finishes.
Durable and cold-flexible - thanks to 0.3mm LDPE and measured tear strength
Material is LDPE at 0.3 mm ±30% with tear strengths of 64 N longitudinally and 63 N transversely, and low-temperature flexibility down to -25 °C. Aging and alkali resistance meet the stated requirements.
Handles on-site handling without frequent punctures and remains pliable in cold conditions, cutting the risk of damage during winter installs.
Quicker, neater installation - with 4 m roll width and compatible tapes
Wide 4 m roll reduces the number of longitudinal joins across room-sized floors, and the listing specifies compatible tapes such as one-sided reinforced tape, aluminium tape and butyl tape for joint sealing.
Fewer seams and recommended sealing methods save time and produce more reliable joints across large floor areas.
✨ The 4 Key Reasons for B2C Damp Proof Membrane
- 0.3mm LDPE core - withstands handling and resists punctures during installation in tight spaces
- 4m roll width - fewer seams across room-sized floors, speeding up large installations
- High Sd value (83 m) - reduces vapour drive through subfloors, protecting finishes above
- Cold-flex tested to -25°C - remains pliable during winter fits, avoiding cracking on site
📋 Technical Details at a Glance
- Category: Home Improvement, Damp Proof Membrane
- Dimensions: 4 m wide (listing includes 4 m x 25 m and various lengths 1 m–25 m)
- Material: LDPE
- Thickness: 0.3 mm ±30% (300MU)
- Reaction to fire: Class F
❓ Frequently Asked Questions
Q: What is the membrane thickness?
A: The membrane thickness is specified as 0.3 mm ±30% (listed as 300MU).
Q: What roll sizes are available?
A: Rolls are 4 m wide and the listing references various lengths between 1 m and 25 m, with a typical 4 m x 25 m option noted in the technical data.
Q: Which tapes should be used to seal joints?
A: Recommended tapes are one-sided reinforced tape, aluminium tapes or butyl tapes for reliable joint sealing.
🏆 Our Verdict
Suitable for builders, floor installers and DIY renovators who need reliable damp protection beneath floor finishes. Robust LDPE construction, high Sd rating and compatibility with recognised sealing tapes provide dependable moisture control and straightforward jointing. The stated standards and on-site performance characteristics point to sensible long-term value for renovation projects.
