Con-TopSeal
Elastomeric Waterproofing & Heat Insulating Membrane
Seal Water. Resist Heat. Protect Longer.
Seal Water. Resist Heat. Protect Longer.

Con-TopSeal is a premium single-component, high-elastomeric acrylic waterproofing and heat insulating membrane developed for roofs, terraces, exterior walls and other exposed construction surfaces.
It forms a flexible, seamless protective coating that helps resist water penetration, UV exposure and thermal movement. Its high elasticity allows the coating to accommodate expansion and contraction while helping bridge and seal hairline cracks.
Developed by Baral Chemical Company Ltd., Con-TopSeal is suitable for concrete, masonry and several other properly prepared construction substrates.
Con-TopSeal creates a flexible protective membrane that helps resist water penetration, UV exposure and weathering while supporting better thermal protection of exposed surfaces. With approximately 440% elongation at break, the coating can accommodate movement associated with expansion and contraction while maintaining its protective function.
Developed by Baral Chemical Company Ltd., a trusted construction Chemical Company in Bangladesh, Con-TopSeal provides a professional solution for roof waterproofing, heat insulation and long-term exterior surface protection.
✅ Helps prevent water penetration
✅ Waterproofing & heat insulating protection
✅ High elastomeric flexibility
✅ Bridges and seals hairline cracks
✅ UV and weather resistant
✅ Helps accommodate thermal expansion & contraction
✅ Helps protect against carbonation and chlorides
✅ Good adhesion to suitable substrates
✅ Water-based and non-toxic
✅ Easy application by brush or roller
✅ Suitable for light foot traffic
Proper surface preparation and coat application are essential for getting the best waterproofing, flexibility and heat protection performance from Con-TopSeal.
Make sure the substrate is sound, smooth, cured and dry. Remove dust, grease, oil, loose particles and damaged materials before coating.
Apply one primer coat of Con-TopSeal mixed with approximately 30–40% water and allow it to dry properly before the next coat.
Apply the second coat after the primer becomes touch dry. Apply the top coat using Con-TopSeal mixed with approximately 15–20% water.
Maintain approximately 4–6 hours between coats and allow the completed system to air cure for at least 48 hours before exposure to service conditions.
Technical Note: Con-TopSeal provides approximately 440% elongation at break and is designed to accommodate thermal expansion and contraction. Fiber Mesh or Geo-Textile may be incorporated where additional reinforcement is required. :contentReference[oaicite:1]{index=1}
Select a suitable pack for your project requirement. Click Order Now to request current price, product availability and technical application guidance.
Waterproofing & Heat Insulating Membrane
Waterproofing & Heat Insulating Membrane
Waterproofing & Heat Insulating Membrane
Waterproofing & Heat Insulating Membrane
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See what engineers, contractors and construction professionals say about their experience with Con-TopSeal from Baral Chemical Company Ltd.
Con-TopSeal Product Experience
Roof Protection SolutionCon-TopSeal was used for roof waterproofing where water protection and flexibility were important. The coating was straightforward to apply.
We used Con-TopSeal on an exposed terrace where UV exposure and thermal movement were key concerns. The system was practical for our project.
Con-TopSeal was selected for exposed surfaces requiring waterproofing and heat protection. Baral Chemical also provided useful guidance.
The product was easy to apply by roller and suitable for our roof renovation work where hairline cracks and weather exposure were present.
Con-TopSeal provided a practical coating solution for selected exterior areas exposed to weather, sunlight and moisture.
We used Con-TopSeal for maintenance waterproofing on exposed building surfaces. The application guidance from Baral Chemical was helpful.
Con-TopSeal was used for roof waterproofing where water protection and flexibility were important. The coating was straightforward to apply.
We used Con-TopSeal on an exposed terrace where UV exposure and thermal movement were key concerns. The system was practical for our project.
Con-TopSeal was selected for exposed surfaces requiring waterproofing and heat protection. Baral Chemical also provided useful guidance.
The product was easy to apply by roller and suitable for our roof renovation work where hairline cracks and weather exposure were present.
Con-TopSeal provided a practical coating solution for selected exterior areas exposed to weather, sunlight and moisture.
We used Con-TopSeal for maintenance waterproofing on exposed building surfaces. The application guidance from Baral Chemical was helpful.
Find answers about Con-TopSeal waterproofing, heat protection, application and suitable surfaces.