CASTECHPROOF APP
Torch-Applied APP-Modified Bitumen Waterproofing Membrane
CASTECH Proof APP is a high-performance, torch-applied waterproofing membrane reinforced with a spun-bond polyester mat and modified with Atactic Polypropylene (APP) for superior flexibility, UV resistance and durability.
Overview
About
CASTECH Proof APP is a high-performance, torch-applied waterproofing membrane reinforced with a spun-bond polyester mat and modified with Atactic Polypropylene (APP) for superior flexibility, UV resistance and durability. It is designed for roofs, terraces, basements and civil engineering structures.
Typical uses
- Roofing: flat and pitched roofs, balconies, terraces
- Substructures: basements, retaining walls, bridge decks
- Wet areas: bathrooms, swimming pools, water tanks
Benefits
Advantages
Key advantages
- Exceptional durability – resists punctures, tears and hydraulic pressure
- Thermal stability
- Chemical resistance – impervious to salts, chlorides and soil chemicals
- Easy installation – torch-applied for seamless adhesion on vertical and horizontal surfaces
Technical data
| Reinforcement | 180 g/m² / 200 g/m² non-woven polyester |
|---|---|
| Tensile Strength L/T (EN 12311-1 / UEAtc) | 750 – 1050 N/5 cm |
| Elongation L/T (EN 12311-1) | 45 – 50% |
| Puncture Resistance – Static (EN 12730) | 25 kg |
| Puncture Resistance – Dynamic (EN 12691) | 1750 mm |
| Softening Point (ASTM D36) | 150°C |
| Water Absorption (ASTM D570) | ≤ 0.4% |
| Cold Flexibility (EN 1109) | -5°C |
Typical values. Refer to the TDS for full details and test conditions.
Application
Surface preparation
Clean, dry and prepare the substrate before installing the membrane.
Application
- Torch the underside of the membrane while unrolling
- Overlap 100 mm at sides and 150 mm at ends
- Heat-seal all laps for watertight bonds
Curing
- Vertical surfaces: use CASTECH Board for backfill protection
- Horizontal surfaces: apply a 25 mm screed or surface finish
Packaging & storage
Packaging
- Standard: 1 m × 10 m rolls
- Custom sizes: available on request
Storage & shelf life
Store rolls palletized, under shade and away from direct heat and sunlight. Shelf life is 12 months in original packaging.
Health & safety
PPE: Wear gloves. Additional information: Refer to MSDS for handling guidelines (available on request).
