A leaking roof or damp basement in Lahore’s monsoon damages plaster, ruins paint, corrodes reinforcement and breeds spreading seepage. For the best waterproofing services in Lahore, Thermo Master — a top waterproofing contractor and insulation manufacturer — provides professional waterproofing from our base on Katar Band Road, near Thokar Niaz Baig, with 500+ completed projects across Pakistan since 2017.
We waterproof concrete roofs, basements, water tanks, bathrooms and exterior walls using membrane, chemical coating and bitumen systems — and combine waterproofing with heat insulation where clients want both solved in one project.
What Professional Waterproofing Is and How It Works
Waterproofing is not “painting the roof.” A proper system has three layers: preparation (cleaning, crack repair, slope correction), the waterproof barrier (membrane or coating that bridges cracks and blocks water), and protection (screed, tiles or coating against UV and traffic).
Lahore’s cycle of intense heat, monsoon downpours and winter contraction is brutal on buildings: heat opens micro-cracks, monsoon water finds them, winter widens them. A flexible system designed for this cycle is what separates a 7-year job from one that fails in the second monsoon.
Our Waterproofing Systems
| System | Best For | Typical Life | Notes |
|---|---|---|---|
| Bitumen membrane (torch-applied) | Large concrete roofs, podiums | 7–10 years | Proven, economical for big areas |
| APP/SBS modified membrane | Roofs with thermal movement | 8–12 years | More flexible than plain bitumen |
| Acrylic elastomeric coating | Residential roofs, terraces | 5–8 years | Reflective white options reduce heat too |
| Cementitious coating | Basements, water tanks, bathrooms | 7–10 years | Bonds to concrete, safe for potable tanks (specified grades) |
| PU waterproofing coating | Critical roofs, industrial | 8–12 years | Seamless, highly elastic |
| Chemical injection/grouting | Active basement leaks, cracks | 5–10 years | Stops pressurised water ingress |
Choosing the Right System
- Residential concrete roof: acrylic elastomeric coating or bitumen membrane, per budget and foot traffic
- Roof + heat problem: reflective coating, or waterproofing combined with thermopore/PU insulation
- Basement seepage: cementitious system from the water-facing side; injection grouting for active leaks
- Water tanks and bathrooms: food-safe cementitious coating inside tanks; cementitious waterproofing under bathroom tiles
- Exterior walls: breathable water-repellent coating
Applications in Lahore and Across Pakistan
- Residential roofs — houses, apartments, plazas
- Commercial and industrial roofs — factories, warehouses, markets
- Basements — parking, storage, residential basements with seepage
- Water tanks — overhead and underground, concrete and plastic-adjacent works
- Bathrooms and wet areas — during new construction or renovation
- Exterior walls — rain-driven seepage on exposed brick and plaster
- Combined waterproofing + heat insulation packages for roofs
Price Table: Best Waterproofing Rates in Lahore
| Waterproofing System | Indicative Price Range | Best For |
|---|---|---|
| Acrylic elastomeric roof coating | Rs. 80–150 per sq ft | Residential roofs |
| Bitumen membrane system | Rs. 120–200 per sq ft | Heavy-duty roof protection |
| Cementitious basement / tank waterproofing | Rs. 100–180 per sq ft | Basements, water tanks |
| PU waterproofing coating | Rs. 150–250 per sq ft | Premium terraces & roofs |
| Crack injection / grouting | Quoted per running foot | Structural crack repair |
All prices are indicative per sq ft, quoted after a free site survey — surface condition dominates cost. Confirm current rates on WhatsApp or call 0333-4673836. Larger areas cost less per sq ft than small residential roofs.
Our Process: What Happens on Site
1. Free site survey — inspect the area, identify leak sources, check drainage 2. Written quotation — recommended system, measured area, fixed price 3. Preparation — cleaning, crack filling, coving at junctions, slope correction 4. Application — the specified system in the correct coats/layers, then protection (screed, tiles or topcoat) 5. Handover — walkthrough, maintenance guidance and warranty documentation
Most residential roofs finish in 2–4 working days, weather permitting.
Common Mistakes to Avoid
- Coating over a dirty, unprepared surface — the top cause of peeling within a year
- Ignoring drainage — no coating survives permanent ponding
- A single coat of ordinary paint — that is not waterproofing; insist on a proper system
- No protection layer — exposed membranes and coatings die early under UV and foot traffic
Why Choose Thermo Master — A Top Waterproofing Contractor
- Lahore-based crews, fast response for surveys across the city
- Right system for the surface — not one chemical for every job
- Combined waterproofing + insulation packages (our speciality)
- 500+ completed projects since 2017
- Written quotation and workmanship warranty on every project
What Our Customers Say
Real reviews from real customers are how new buyers judge a waterproofing contractor. Our Google rating is built one project at a time — every review below comes from a verified Thermo Master customer. Used our waterproofing service? Your feedback helps other buyers choose with confidence.
Hamari service use ki? Google par apna review Urdu ya English me likhein — aapki raaye hamare liye qeemti hai.
FAQs
How do I know if my roof needs waterproofing or just repair? Stains on the ceiling, bubbling paint or damp smells after rain point to system failure; a single small crack can be repaired. Our free survey gives you a straight answer.
How long does roof waterproofing last in Lahore? Membranes last 7–12 years; quality acrylic coatings 5–8 years, depending on preparation and protection from sun and traffic.
Can you waterproof during the monsoon? Emergency repairs, yes. Full systems need dry weather to cure — we schedule major work around the monsoon and offer temporary sealing if you are actively leaking.
Will waterproofing also reduce heat? Standard waterproofing, no — but reflective white acrylic coatings do cut roof surface temperature noticeably, and we offer combined waterproofing + insulation packages that solve both problems in one project.
Do you give a warranty? Yes. Every project carries a written workmanship warranty; the term depends on the system specified. Material warranties follow the manufacturer’s terms.
My basement leaks only in monsoon. Can it be fixed from inside? Often yes, with injection grouting for active leaks followed by internal cementitious treatment. The ideal fix is from the outside (positive side), but that is not always accessible — we assess and recommend honestly during the survey.
Book a Free Site Survey
Call or WhatsApp 0333-4673836 to book a free survey anywhere in Lahore, or email info@thermomaster.pk with photos of the problem for initial advice. Also serving Islamabad, Rawalpindi, Faisalabad, Gujranwala and Sialkot. See https://thermomaster.pk.