Car Builders Stage 2 Waterproof Carpet Underlay is a high-performance, closed-cell foam insulation layer designed for harsh Australian conditions. Unlike outdated cotton jute underlays, this modern material won’t hold water, rot, smell, or attract mould — making it ideal for 4WDs, convertibles, industrial vehicles, and anywhere moisture is an issue.
Its peel-and-stick backing makes installation quick and easy, while the dense closed-cell structure provides excellent acoustic dampening and thermal insulation. With the ability to reduce radiant heat by up to 20°C, this product significantly improves comfort on long trips and hot days.
Each box includes a 1.71m² sheet (1800mm x 950mm), which can be trimmed to fit floors, doors, firewalls, and more.
✅ Features:
Closed-cell foam won’t absorb moisture
Will not rot, smell, or promote mould growth
Reduces heat transfer by up to 20°C
Lightweight and easy to cut
Peel-and-stick installation
Perfect for wet or exposed vehicles
Made for Aussie conditions
🛠️ Applications:
Under carpets
Roof skins
Doors and ¼ panels
Inside cavities
Firewalls
Ute floors, vans, camper builds, industrial cabs
📦 Kit Contents:
1x sheet per box
Sheet size: 1800mm x 950mm
Coverage: 1.71m²
📍 Pickup or Delivery
Available for local pickup at Lowe Fabrication in Western Sydney or fast delivery across Australia. A top choice for 4WD, van life, and off-road builds.








