How to Prevent Seepage (Sem) During Construction
Imagine this scenario. You just built your dream house. The paint looks perfect. The furniture is set. But after a few months, you see ugly wet patches on the walls. The paint starts peeling off. There is a weird smell in the room. This is called Seepage (Sem). It is the biggest nightmare for every homeowner in Pakistan.
Most people try to fix it after the house is built. They use expensive chemicals and wallpapers. But the truth is different. The best time to stop seepage is during construction. If you are planning to build a house, you need to know how to prevent this. As the best construction company in Lahore, Aims Builder is here to guide you. We believe in doing it right the first time.

Why Does Seepage Happen?
Before fixing it, let’s understand the cause. Water finds a way through weak points. These weak points are usually:
- Poor quality bricks that absorb water.
- Leaking water pipes inside the walls.
- No proper barrier between the soil and your walls.
- Rainwater getting trapped on the roof.
If your contractor ignores these steps, your expensive interior will be ruined within a year.
1. The Damp Proof Course (DPC) is Critical

DPC is a layer of concrete placed at the plinth level. Think of it as a shield. It stops underground moisture from travelling up into the walls.
- The Mistake: Many local contractors use a thin layer of concrete.
- The Solution: We apply a thick layer of concrete. Then we coat it with Bitumen (luk) and stick a polythene sheet over it. This creates a double seal.
2. Waterproofing the Foundation
The foundation of your house sits in the soil. Soil has moisture. If you use low-quality bricks in the foundation, they will suck up water like a sponge.
- The Fix: We advise treating the foundation walls with waterproofing chemicals before filling the plot with earth. This is a small cost that saves millions later.
3. Quality Plumbing is Non-Negotiable
Sometimes the water isn’t coming from the ground. It comes from your own bathroom pipes.
- The Fix: Never compromise on pipe quality. At Aims Builder, we pressure test all pipes before plastering the walls. If there is a tiny leak, we catch it immediately. We are known as the best construction company in Pakistan because we pay attention to these hidden details.
4. Roof Insulation and Sloping
Rainwater is a major enemy. If water stands on your roof for days, it will eventually seep down.
- The Fix: Your roof needs proper heat and water insulation layers (Jumbolon or mud terracing). More importantly, the roof must have a proper slope so water drains out instantly.
House Construction Tips for a Dry Home

Smart construction saves you money. Here are some quick house construction tips for 2026:
- Proper Slope: Ensure bathroom and roof floors slope toward the drain. Water should never stand still.
- Curing: Water the bricks and concrete properly during construction. It prevents cracks where seepage can start.
- Grouting: Use waterproof grouting between your floor tiles.
Why Aims Builder is the Best Choice for You
Many contractors skip these steps to save money. They use cheap pipes. They ignore the bitumen layers. You won’t notice it immediately. But a year later, the Sem appears. At Aims Builder, we don’t cut corners.
We understand that a home is a lifetime investment. We focus on the hidden details that keep your home strong and dry. Our strict quality checks on plumbing and waterproofing are why we are considered the best construction company in Lahore.
We treat every project like our own home. Our commitment to quality materials and engineering standards pushes us to be the best construction company in Pakistan. If you are looking for reliable Residential Construction Services, we are here to help you build a home that lasts for generations.
Build It Right, Build It Dry
Don’t let seepage ruin your investment. Tackle the problem at the root. Use quality materials. Hire experts who care. Are you planning to build your dream home? Do you want a guarantee against damp walls? Contact Us today for a free consultation. Let’s build a seepage-free home together with Aims Builder.