Trade-Grade 1000 Gauge Clear DPM, 250 Micron, 4m x 25m Roll

Clear Moisture Barrier Membrane

The Trade-Grade 1000 Gauge DPM serves as a high-performance moisture barrier designed for ground-bearing concrete floors and foundation work. This heavy-duty polyethylene sheeting prevents groundwater and water vapor from penetrating the building structure through the slab. It ensures full compliance with standard building regulations regarding damp proofing for new extensions and residential builds.

Built for the Job

Site teams typically install this clear sheeting before pouring concrete to isolate the slab from the ground. It sits directly over the sand blinding to protect the integrity of the concrete. The transparent finish provides a significant advantage on the job site compared to black alternatives. It allows supervisors and contractors to inspect the substrate and reinforcement steel placement before the pour. This visibility ensures that spacers remain correctly positioned and that no debris is trapped beneath the plastic. The material remains flexible even in low temperatures, making it easier to handle during winter site starts.

• Ground floor slab construction for residential and light commercial buildings.

• Moisture protection under screeds and timber flooring systems.

• Temporary weather protection for site materials and open structures.

Product Highlights

High Puncture Resistance

The 250-micron thickness provides the durability required to withstand heavy foot traffic and wheelbarrow movements during the construction phase.

Chemical and Soil Resistance

• Resists degradation from acids and alkalis commonly found in subsoils.
• Prevents the migration of harmful ground salts into the concrete matrix.

Technical Specifications

What’s Included

• 1 x Roll of 1000 Gauge Clear Damp Proof Membrane (4m x 25m)

On-Site & Workshop Notes

• Always overlap the moisture barrier joints by at least 150mm to ensure a continuous seal.

• Seal all laps and penetrations using high-quality double-sided jointing tape and lap tape.

• Ensure the sand blinding is well-compacted and free of sharp protrusions that could pierce the 250-micron barrier.

• Store rolls upright on a level surface and avoid prolonged exposure to UV light before installation to prevent material fatigue.