HDPE Dimpled Membrane for Vertical Foundation Insulation 1.5 m x 20 m (30 m²) - Black

With a compressive strength of 150 kN/m², this HDPE dimpled membrane withstands heavy backfill pressure without collapsing, ensuring long-term protection for vertical foundation walls. The 8 mm studs create a consistent air gap of 5 L/m², providing effective drainage and ventilation while mechanically shielding the waterproofing layer from damage during backfilling.

Overview

Engineered for vertical foundation insulation, retaining walls, and basement applications, this high-density polyethylene (HDPE) membrane features a dimpled design that creates a permanent drainage cavity. It directs water away from the structure, reduces hydrostatic pressure, and protects the waterproofing system. The black sheet is resistant to chemicals commonly found in soil, including acids, alkalis, and salts, and can withstand short-term UV exposure during construction.

What stands out

• High compressive strength of 150 kN/m² withstands backfill pressure without collapsing.
• 8 mm dimple height maintains a consistent air gap for ventilation and drainage.
• Impermeable HDPE membrane acts as a secondary moisture barrier.
• Chemical resistance to soil-borne substances extends service life.
• Large 30 m² roll covers significant wall area with fewer joints.

Technical details

• Material: High-Density Polyethylene (HDPE)
• Roll width: 1.5 m
• Roll length: 20 m
• Total area: 30 m²
• Membrane thickness: 0.6 mm
• Dimple height: 8 mm
• Air gap volume: 5 L/m²
• Compressive strength: 150 kN/m²
• Water permeability: Impermeable
• Temperature resistance: -30°C to +80°C

Our verdict

A robust and reliable drainage membrane that delivers exceptional compressive strength and chemical resistance, making it an ideal choice for protecting foundation waterproofing in demanding soil conditions.