Application
Basement Waterproofing Systems in Pakistan
Basement waterproofing in Pakistan typically requires a positive-side membrane system designed for hydrostatic pressure, correctly detailed at the raft, retaining walls, construction joints and penetrations. Petroseal specifies SBS-modified bitumen systems (including double-layer assemblies where groundwater risk is high), coordinated with primers, protection boards and compatible waterstops. Negative-side remedies are diagnosed separately and are not a substitute for a designed below-grade system on new work.
Recommended systems
Match site condition to a Petroseal system page.
| Condition | Recommended system |
|---|---|
| Deep basement / groundwater exposure | Double-layer SBS basement system |
| Accessible external wall | SBS post-applied membrane |
| Raft horizontal | Designed horizontal SBS assembly |
| Construction joints | Waterstop + compatible joint treatment |
Technical requirements
- —Clean, primed substrate; sound concrete free of laitance
- —Continuous membrane around raft-to-wall transition
- —Protection before backfill or pour of protection screed
- —Documented lap widths and detailing per method statement
Limitations
- —Existing leaking basements need diagnosis before product selection
- —Membrane alone cannot fix unresolved structural cracks or drainage failures
Application sequence
- Assess water table and drainage design
- Select single- or double-layer SBS system
- Detail joints, pile heads, and penetrations
- Install, protect, and inspect before covering
Common failure modes
- —Missing raft-to-wall continuity
- —Punctures during backfill without protection
- —Unsealed pipe penetrations
Related systems
- SBS Waterproofing System
SBS waterproofing systems use styrene-butadiene-styrene modified bitumen membranes for elasticity and low-temperature fl…
- Double-Layer SBS Basement System
A double-layer SBS basement system installs two plies of SBS-modified bitumen membrane to provide redundancy under hydro…
- Bitumen Membrane Waterproofing System
Bitumen membrane systems use prefabricated APP or SBS modified sheets torch-welded at laps to form a continuous waterpro…
Related products
- PetroGrip SBS
SBS-modified torch membrane—3mm and 4mm with plain, aluminum, or granular surfacing.
- PetroSelfGrip
Cold-applied peel-and-stick bitumen membrane in 1.5mm and 2mm.
- PVC Waterstoppers
PVC water-stops for watertight concrete construction joints.
Related projects
- LUMS University
Lahore · Education
- Emporium Mall
Johar Town, Lahore · Commercial
Technical downloads
- PetroGrip SBS Waterproofing Membrane TDS
Polyester-reinforced SBS-modified torch-applied bitumen membrane — 3 mm nominal thickness, 60/70 bitumen base.
Technical guides
- Basement Waterproofing with Bitumen Membrane Systems
Design and install basement waterproofing with PetroGrip SBS torch membrane and PetroSelfGrip sheets—substrates, laps, protection boards, and Lahore-manufactured systems for nationwide projects.
- How to Select a Basement Waterproofing System in Pakistan
A specification workflow: water table, access, joint strategy, and when to choose PetroGrip SBS, double-layer SBS, or cementitious remediation.
- How Hydrostatic Pressure Affects Basement Waterproofing
Head pressure, seasonal recharge in Punjab, lap design, and why PetroGrip SBS double-layer systems exist for sustained groundwater loading.
- Positive-Side vs Negative-Side Waterproofing (Basements & Tanks)
Where the membrane or coating sits relative to water pressure—and when PetroGrip SBS on the outside beats internal injection or coating remediation.
- 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.
FAQ
- Is SBS suitable for basement waterproofing in Pakistan?
- Yes. SBS-modified membranes are commonly selected for basements because of flexibility and detailing performance. Confirm thickness and layer count with the structural and waterproofing designer.
- What is double-layer SBS basement waterproofing?
- A two-ply bitumen membrane assembly used where groundwater risk or design standards require redundancy. See the double-layer SBS basement system page.