Terrace waterproofing and roof protection in Sonipat, Haryana

Roof leaks in Sonipat cause two very different kinds of damage. In the townships around Kundli, water through the terrace ruins ceilings and walls in top-floor flats. In the industrial areas at Kundli, Rai and Barhi, a leak above a warehouse or production hall drips onto cartons, machines and finished stock, and one bad monsoon can cost more than the waterproofing would have. Both need the roof sealed properly, but the type of roof decides the method.

First question: concrete roof or metal shed?

Many warehouses along the highway have metal sheet roofs, while office blocks, older factories and housing have concrete (RCC) roofs. They leak for different reasons:

This page covers concrete terraces. For metal sheds, see our industrial shed waterproofing page.

Township and apartment roofs

New housing roofs in the area often leak within a few years because of:

• thin or incomplete waterproofing at parapet corners
• rainwater outlets set too high, so water ponds around them
• overhead tank stands and solar frames bolted through the slab
• expansion joints between blocks left unsealed

We survey the roof, link leak points to damp patches in flats below, repair cracks and ponding areas, detail every junction and fixing, and apply a liquid PU membrane with a heat-reflective topcoat. The reflective finish also helps top-floor flats stay cooler in Haryana's summer.

Factory and warehouse RCC roofs

Concrete roofs over production and storage areas usually have exhaust fans, skylights, pipe penetrations and many outlets. We map leaks from inside, then treat the corresponding roof details before applying the membrane. Where stock or machines sit below known leak points, we can do urgent sealing of those spots first while the full system is planned.

Why detailing matters more than the product

Most roof leaks we see aren't because the coating on the open roof failed. They happen at edges and penetrations. A good membrane over a poorly detailed parapet, outlet or bolt will still leak. So a large part of our work is at:

1. parapet fillets and upturns of at least 300 mm
2. rainwater outlets, sealed into the membrane with reinforcement
3. pipes, bolts and equipment plinths, each sealed individually
4. expansion joints, treated with flexible joint systems

Timing

Survey during or just after the monsoon when leaks are visible, and waterproof between October and May when roofs are dry.

FAQs

Can a warehouse roof be sealed while stock is stored below?

Yes. Roof work happens from above, so operations below can continue. We can cover sensitive stock during work near penetrations.

Our new flat's terrace already leaks. Should we contact the builder?

If it's under warranty, record the leak with photos first. We can provide a written description of the defects we find.

Does a heat-reflective topcoat really help?

It lowers the roof surface temperature and reduces heat entering top-floor rooms, which residents usually notice in summer.

Call +91-8755475716 or send photos of your roof on WhatsApp. More details are on our terrace and roof waterproofing page.