In Pakistan, roof leakage and seepage are persistent challenges due to extreme weather conditions, poor construction practices, and lack of proper waterproofing. From damp ceilings to structural damage, water intrusion can cost property owners heavily in repairs.
This guide highlights:
- The main causes of leakage
- Construction-phase precautions
- Recommended Waterproofing Solutions – Roofgrip Waterproofing Membranes, Roofline Joint Sealant Compound, and Bitumen Based Coatings ( Hot Applied & Cold Applied )
Common Causes of Leakage & Seepage
- Cracks in RCC Roof Slabs
- Unsealed Pipe Penetrations (HVAC, Plumbing)
- Inadequate Roof Slope
- Clogged Roof Drains
- Wild Plant Root Penetration
- Water Tank Overflow
- Failed Tile Grouting (Chowka)
- Deteriorated Foam Concrete or Screed
- Untreated Expansion Joints
- Substandard DPC (Damp Proof Course)
- Inappropriate Waterproofing of Basement Structure
Construction-Stage Waterproofing: What to Do & What to Use
1. DPC at Plinth Level
Moisture rising from the ground (rising damp) causes wall paint peeling, bubbling plaster, and white salt deposits (efflorescence). Prevent this with a proper DPC layer.
✔ Recommended:
Roofgrip DPC Waterproofing Membrane
- Self Adhesive Elastomer Membrane
- Excellent resistance to rising moisture and soil dampness
2. Roof Waterproofing (Exposed or Concealed Use)
Whether the roof is tiled or left exposed, it must be protected from rainwater and environmental stress.
✔ Recommended:
Roofgrip Torch Applied Waterproofing Membrane ( Plain for Concealed Applications and Granule/Aluminum for Exposed Applictions )
3. Bitumen Coatings: Hot & Cold Applied
In many Pakistani projects, bitumen coating is a preferred method for extra reinforcement on RCC roofs, parapets, bathrooms, and basements.
✔ Recommended:
10/20 Rolla (Hot-Applied Bitumen)
Primer Grip (Cold-Applied Bitumen Primer)
4. Expansion Joint Sealing
Expansion joints allow slab movement—but must be sealed to prevent water entry.
✔ Recommended:
Roofline Joint Sealant Compound (JSC)
5. Additional Construction Tips
- Ensure Roof Slope towards drain outlets
- Install Leaf Guards to avoid drain clogging
- Seal Pipe Penetrations with sleeves and mastic
- Use Waterproof Tile Grouts in terraces, bathrooms, and kitchens
- Avoid Plant Growth on roofs by regular cleaning
- Install Float Valves in tanks to avoid overflow
Final Word: Protect from the Start
In construction, waterproofing is not just a layer — it’s a system. Addressing only one element is not enough. You need a comprehensive, layered approach that suits Pakistan’s weather and construction conditions.
By combining:
- Roofgrip Torch Applied and Self Adhesive Membranes for various waterproofing application ( DPC
- Primer Grip + Hot 10/20 Bitumen Coating for enhanced protection
- Roofline JSC for movement-prone joints
…you ensure your building stays dry, strong, and maintenance-free for years.
Build once, build right — with a complete waterproofing system.