Water-based, non-toxic waterproofing and heat-proofing systems for RCC roofs, G.I. and asbestos sheets, tanks, basements and bathrooms — applied by the crew that has sealed over 1,100 sites across Karachi.
Every claim below comes off a completed job sheet — square footage, temperature readings and completion dates from real Karachi sites.
Chemical injection into the drain line, latex-taped joints, two-component ZEM Guard 209 on walls and floor, then a flood test before re-tiling. Drag the handle to compare.
lower slab temperature means lower AC load and a longer structure life.
Heat-proof coating reflects more than 85% of incoming solar radiation instead of storing it in the slab.
Square feet
18 buildings, roof waterproofing plus heat-proof coating. Handed over in 22 working days.
The code on each card is the surface designation we use on the job sheet, so a quote reads the same way the site does.
Water-based polymerised coating for new and old concrete roofs. Two-coat, or four-coat with cotton fabric reinforcement.
Read more HEATReflective cool coating that turns back over 85% of solar radiation and cuts slab temperature by 6–8°C.
Read more GIRust treatment, seam sealing and coating for corrugated galvanised iron warehouse and factory roofs.
Read more ACCemented A.C. sheet sealing that stops seepage at the overlaps without replacing a single sheet.
Read more TANKPolymerised cementitious coating for overhead and underground concrete tanks. Safe with drinking water.
Read more FDNExternal basement waterproofing in bituminous, styrene-acrylic or crystalline coating, chosen by soil condition.
Read more BATHTwo-component ZEM Guard 209, taped joints, drain injection and a flood test before flooring goes back down.
Read more DIYThe same coatings sold by the pail with application instructions, for owners and contractors applying it themselves.
Read more Most failures happen because someone skipped a layer. This is the full build-up we specify on industrial roofs, bottom to top.
Grinding, dust removal, and every crack mapped before anything is coated. Coating over a dirty, cracked slab without a plan is the most common reason a job fails in year two.
The first waterproof film goes down over the prepared surface — water-based, non-toxic, and flexible enough to move with the slab through Karachi’s heat cycle.
Primer soaks into the base coat’s pores while every mapped crack is individually filled and levelled — the last chance to fix a weak spot before it gets sealed in for good.
Embedded wet into the base coat. This is what bridges hairline cracks as they open and close, and what separates a 3-year job from a 10-year one.
Two component coats penetrate fully through the cotton fabric and fiber mesh, bonding into a single seamless membrane across the surface. What began as separate layers now performs as one continuous waterproof skin.
Client, scope and covered area exactly as recorded at handover.
Roof waterproofing + heat-proof coating18 buildings
68,000 sq.ftG.I. sheet waterproofingWarehouse
28,000 sq.ftRoof waterproofing + heat-proof coating3 buildings
26,000 sq.ftG.I. sheet waterproofingWarehouse
14,000 sq.ftCemented asbestos sheet waterproofingTextile CMD
9,400 sq.ftUnedited, pulled straight from our Google Business Profile — not written for this site.
“Very nice experience of water proofing and Heat protection with Abdul Samad bhai from Zem Chemicals. Commitment, Satisfaction and Worth of Money Guaranteed! Definitely Recommended!”
“Got my house’s waterproofing and heat proofing from them and highly appreciate the work they are doing and the service they are providing. Thank you for being so friendly to your customers and listening to what they want.”
“Zem Chemical is a perfect choice for everyone. As I called them for heat proofing and they did a fantastic job. Their service are superb and the most important thing is that they complete their work on time.”
No — RCC roofs are one of eight surfaces we treat. We also do G.I. and asbestos sheets, water tanks, basements, foundations and bathrooms.
We don’t quote by phone or by area alone. A surveyor checks the actual roof first — existing damage, access and surface condition all change the system needed — then you get a written quotation with no obligation.
Yes. Our systems are water-based and non-toxic, including the polymerised cementitious coating used on water tanks, which is safe for drinking water.
Waterproofing seals the surface against water penetration. Heat proofing is a reflective top coat that turns back over 85% of solar radiation, dropping roof surface temperature by 6–8°C — many clients apply both together.
Karachi, Hub and Nooriabad as our regular coverage, with select larger projects elsewhere in Pakistan — including our 68,000 sq.ft job for Frontier Corps in Turbat, Balochistan.
Depends on scope. Our logged jobs range from about 12 days for a 14,000 sq.ft warehouse roof up to 22 days for a job as large as 68,000 sq.ft.
We do not quote from a slider. Tell us the surface and roughly how many square feet, leave a number we can reach you on, and a surveyor will come and look at the actual roof before any price is discussed.
Roofs have things photographs do not show. We price after we have stood on it.
Your details go straight to our office on 0332-0066625. We normally respond the same working day.
Field notes on roof leaks, heat proofing and site prep — written from real Karachi jobs.
