In the Tricity, water is the one enemy every building eventually meets. It arrives with the monsoon, seeps up from damp ground through the drier months, and collects on flat terraces long after the rain has stopped. Left unchecked, it shows up as a stained ceiling, a wall that smells musty, paint that bubbles and peels, or a bathroom that leaks into the room below.
Good waterproofing stops all of that before it starts — and it is far cheaper to do than to repair a building that water has already got into. This guide walks through where water gets into Tricity homes and buildings, the two main ways to keep it out, and which products handle which job. It is written for both homeowners planning a repair and contractors who want a quick, practical reference.
At Khandelwal Trading Co. in Panchkula, we stock the construction chemicals and waterproofing range that most of these jobs call for — Dr. Fixit and Sika — and we are happy to point you to the right product for your specific problem.
Why waterproofing matters in Panchkula and the Tricity
Panchkula, Chandigarh and Mohali get a heavy, concentrated monsoon. For a few months the ground stays saturated, terraces take a daily beating, and the humidity keeps everything from drying out between showers. The rest of the year swings the other way — hot, dry and dusty — so building materials expand and contract, opening up the hairline cracks that water later exploits.
Concrete and cement plaster are not naturally waterproof. They are full of tiny capillaries that pull water in and hold it. Once moisture is inside a wall or slab it moves around, breaks down the plaster from within, corrodes the steel reinforcement, and eventually surfaces as damp patches and falling paint. Waterproofing is simply the step that closes those pathways off.
Tell-tale signs of a waterproofing problem
- Damp patches or water stains on ceilings and walls, usually worst after rain
- Paint that bubbles, flakes or shows white powdery deposits (efflorescence)
- A persistent musty smell in a room, cupboard or basement
- Water pooling on the terrace instead of draining away
- Leaks appearing in the room directly below a bathroom or terrace
The two ways to waterproof: integral and surface
Almost every waterproofing product falls into one of two families. Understanding the difference makes it much easier to choose the right one.
Integral (in-the-mix) waterproofing
Here the waterproofing goes into the concrete or plaster while it is being mixed. A liquid admixture such as Dr. Fixit LW+ reduces the mix’s water demand and blocks the capillaries, so the finished concrete or plaster is far less able to absorb water in the first place. It is the foundation of good waterproofing — build the resistance in from the start.
Surface (coating) waterproofing
This is a barrier applied on top of a finished surface — a brush- or roller-applied membrane that forms a continuous, often flexible film. Products like Dr. Fixit 2K and Fastflex sit in this group, and they are what you use on terraces, wet areas and tanks.
The two are not rivals. On any serious job you use both: integral protection built into the structure, and a surface membrane over the areas that take the most water.
Waterproofing your building area by area
Different parts of a building fail in different ways and need different solutions. Here is where the water usually gets in, and the approach that works for each — with links to our detailed guides on the jobs that need them.
Active leaks and seepage
If water is already coming in, that is the first thing to fix — a coating laid over a live leak will simply fail. Fast-setting plugging compounds and crack fillers stop the flow so the area can be dried and treated properly. Our guide on stopping active leaks and seepage this monsoon covers the emergency steps.
New construction: build the protection in
The cheapest waterproofing is the kind you build in. Adding Dr. Fixit LW+ to concrete and plaster during construction makes the whole structure water-resistant from day one. See integral waterproofing with Dr. Fixit LW+ for how and where to use it.
Terraces and roofs
Flat terraces are the Tricity’s most common leak source — they collect standing water and cook in the sun. A flexible elastomeric coating like Dr. Fixit Fastflex, or a two-component 2K membrane, laid over a properly prepared and sloped surface, is the usual answer. Full method in terrace and roof waterproofing.
Walls and rising damp
Damp can come through walls from outside (driving rain on the weather-facing side) or up from the ground (rising damp). Each needs a different treatment. Our guide to wall dampness and rising-damp treatment explains both.
Bathrooms and wet areas
Bathrooms leak more than any other room because water is present every day and the waterproofing is hidden under the tiles. Getting it right before tiling is essential — see bathroom and wet-area waterproofing before tiling.
Water tanks and overhead tanks
Storage tanks need a waterproofing system that is safe for stored water and can handle constant wet-and-dry cycling. Our guide on water-tank and overhead-tank waterproofing covers the food-safe options.
Choosing the right product: the Dr. Fixit and Sika range
We keep the ranges that cover the full spread of jobs above. As a quick orientation:
- Dr. Fixit LW+ — integral liquid admixture for concrete and plaster; your first line of defence, built into the structure.
- Dr. Fixit 2K — a two-component, flexible cementitious coating for terraces, wet areas and tanks.
- Dr. Fixit Fastflex — an elastomeric, UV-resistant coating designed for exposed terraces and roofs.
- Dr. Fixit Crack Seal — for sealing cracks before you coat over them.
- Dr. Fixit Powercrete — for structural repair and rebuilding damaged concrete.
- Sika — a full alternative system of admixtures, coatings and repair products, often specified on trade and commercial jobs.
Which one is right depends on the surface, the exposure and whether the leak is active. If you are not sure, bring us a photo and a rough measurement of the area and we will point you to the correct product and quantity. Coverage and the number of coats vary by product and surface condition, so always follow the pack instructions — or just ask us.
Common waterproofing mistakes to avoid
- Coating over a damp or dirty surface. Membranes need a clean, sound, correctly prepared base to bond — skip the prep and the coating peels.
- Ignoring the slope. A terrace that does not drain will defeat even a good membrane; standing water finds every weak point.
- Treating the symptom, not the source. Painting over a damp patch without stopping the water behind it just hides the problem for a few weeks.
- Waterproofing during the rains. Most coatings need a dry surface and dry weather to cure — the ideal window is before the monsoon, not during it.
- Using the wrong product for the area. A terrace coating is not a tank liner, and a crack filler is not a membrane. Match the product to the job.
Where to buy waterproofing materials in Panchkula
Khandelwal Trading Co. is a decade-plus tools, hardware and construction-chemicals business in Panchkula, serving Panchkula, Chandigarh, Mohali and trade customers across the Tricity. Locals call us “the Google shop for the construction industry” — we carry Dr. Fixit and Sika waterproofing systems along with the adhesives, sealants and hardware that go with them, and we are happy to talk through your specific problem before you buy.
Whether you are a homeowner fixing one damp wall or a contractor pricing a full building, come in, call, or send us the details for a quote.
- Visit: Shop No. 4, Street No. 2, Maheshpur, Sector 21, Budanpur, Panchkula, Haryana 134117
- Call: 94175 65977
- WhatsApp: message us here
- Trade enquiry: get a quote
Frequently asked questions
What is the best way to waterproof a terrace in the Tricity?
For most Tricity terraces, a flexible coating such as Dr. Fixit Fastflex or a 2K cementitious membrane, applied over a clean, crack-free and properly sloped surface, works well. The preparation and the slope matter as much as the product itself.
Should I waterproof myself or hire a contractor?
Small jobs — sealing a crack, coating a small wet area — are within reach of a confident DIYer. Large terraces, structural repairs and hidden bathroom waterproofing are better left to an experienced contractor. Either way, we can supply the right materials and advise on quantity.
When is the best time to waterproof?
Before the monsoon, on a dry surface, in dry weather. Most coatings need to cure without rain, so waterproofing in the weeks leading up to the rains gives the best result.
What is the difference between integral and surface waterproofing?
Integral waterproofing (like Dr. Fixit LW+) goes into the concrete or plaster mix to make the material itself water-resistant. Surface waterproofing is a coating applied on top. On serious jobs you use both together.
How much does waterproofing cost in Panchkula?
It depends on the area, its condition and the products used — a small crack repair and a full terrace membrane are very different jobs. Send us the area and a photo and we will give you a clear quote.
