Thickened Durable 4mm App Waterproof Membrane

Product Advantages of 4mm Sand‑finished APP Modified Bitumen Waterproof Membrane

1. Excellent high‑temperature resistance: Type II withstands up to 130℃, no flow or slip under strong sunlight, ideal for hot‑climate exposed roofs.
2. Built‑in sand protective layer: The mineral sand surface serves as direct protection, saving extra protective‑layer work. It is wear‑resistant, foot‑traffic tolerant and anti‑UV to slow down membrane aging.
3. Reliable waterproof performance with 4mm thickness: Sufficient bitumen content improves puncture resistance and water‑pressure resistance. Single‑layer meets most roof waterproofing requirements.
4. Superior mechanical property (polyester mat): High tensile strength and good elongation, adapts to substrate settlement, expansion and minor cracks.
5. Good corrosion resistance: Resists acid, alkali and underground‑water corrosion, stable in humid underground conditions.
6. Mature hot‑melt installation: Torch‑on construction, lap joints fuse into an integral whole with reliable sealing and high working efficiency.
7. Long weathering service life: Sand layer blocks UV radiation for long‑term outdoor performance and low maintenance cost.

Application Scenarios

1. Exposed waterproofing for flat / sloped roofs of industrial plants and warehouses, especially for hot sunny southern regions.
2. Renovation and repair of old roofs for direct exposed application without additional protective screed.
3. Waterproofing for residential roofs, terraces and parking lot decks.
4. Basement top slabs and civil air‑defense project top slabs before backfilling.
5. Waterproofing & moisture‑proofing for tunnels, utility tunnels and bridge decks.
6. Projects under high‑sunshine conditions where cement‑mortar protective layer is inconvenient.