Petroseal
PetroGrip APP
PetroGrip APP (atactic polypropylene) torch applied membrane is manufactured by Petroseal for high softening point and excellent UV stability—ideal as the exposed cap sheet on flat roofs in Lahore, Karachi, Islamabad, and industrial sites nationwide. Rolls are torch-welded at laps on primed concrete, metal deck, or compatible substrates. Available in 2mm, 2.5mm, 3mm, and 4mm with plain, aluminum, or granular surfacing.
Key features
- — APP modifier for superior heat and UV resistance on exposed roofs
- — Thicknesses: 2mm, 2.5mm, 3mm, 4mm
- — Surfacing: Plain, Aluminum Layer, Granular Layer
- — Torch-welded laps for a continuous waterproof barrier
- — Manufactured in-house by Petroseal Enterprises
Applications
- — Exposed flat and sloped roofs (aluminum or granular cap sheet)
- — Roof on slab, beds, basements, retaining walls (plain finish)
- — Industrial plant roofs and terraces
- — Podium and plaza waterproofing with traffic-rated granular finish
Technical specs
Thickness
Surfacing
Roll width
Roll length
Pakistan climate recommendation
For fully exposed roofs in Punjab and Sindh, specify APP 4mm with Aluminum or Granular surfacing. Plain APP is typically used in protected layers or below finishes.
| Thickness | 4mm |
| Surfacing | Aluminum Layer |
| Roll width | 1m |
| Roll length | 10m |
Surfacing guide
- Plain: Roof on slab, beds, basements, retaining walls—protected or multi-ply build-ups.
- Aluminum Layer: Exposed areas subject to direct sun—reflective cap sheet on roofs.
- Granular Layer: Traffic-related areas; also selected for some basements and beds.
Performance profile
Relative orientation only — not laboratory test results or certified performance percentages.
Technical downloads
TDS and brochures for this product. Open the HTML specification page or download the PDF.
- PetroGrip APP Polyester Fiberglass Membrane TDSPDF ↓
APP-modified torch-applied membrane with composite polyester + fiberglass reinforcement — 3 mm and 4 mm plain PE film finish.
Technical guides
Application notes and specification articles for this product.
- APP vs SBS Bitumen Membrane: Which PetroGrip System Fits Your Project?
Compare PetroGrip APP and SBS torch-applied membranes—modifier chemistry, surfacing options, and where each system belongs in roof and below-grade build-ups across Pakistan.
- Torch-Applied Waterproofing: PetroGrip Site Practice
How PetroGrip torch-applied bitumen membranes are specified, primed, and welded on roofs and podiums—with quality checks that protect your warranty.
- APP vs SBS for Pakistan’s Climate (Roofs and Below Grade)
Heat, UV, monsoon recharge, and thermal movement—when PetroGrip APP caps beat SBS on Punjab roofs and when SBS is mandatory below grade.
- 3mm vs 4mm Waterproofing Membrane: When to Specify Each in Pakistan
Thickness selection for PetroGrip APP and SBS torch membranes—substrate condition, traffic, double-layer basements, and what 3mm or 4mm actually changes on site.
Related applications
Where this product is typically specified.
Related systems
System pages that use this product.
Application map
- Exposed roof: APP + aluminum/granular—torch-welded cap sheet.
- On slab: Plain APP under protection course or tiles.