Does Water Seep in During Rains from Your Windows? Window Leakage Solution for Mumbai Homes


Window Leakage Solution

Does Water Seep in During Rains from Your Windows?

It often starts with just a few drops.

One rainy evening in Mumbai, you may notice water collecting near the window sill. At first, it doesn't seem serious. You wipe it with a cloth and forget about it.

But the next time it rains heavily, the water comes in again.

A few weeks later, you notice something else.

The paint near the window starts peeling. A dark patch appears on the wall. There is dampness around the window frame. Sometimes, water even travels below the window and damages the wall.

This is a common problem in many homes and commercial properties across Mumbai, Thane, Navi Mumbai and other parts of the Mumbai Metropolitan Region.

The good news is that window leakage can often be identified and treated before it causes major damage.

Why Does Rainwater Enter Through Windows?

A window may look perfectly fine from inside. However, during heavy rain and strong winds, water can find even the smallest opening.

One of the most common causes is a gap between the window frame and the surrounding wall.

Over time, the building experiences:

  • Heavy monsoon rainfall
  • Strong wind pressure
  • Expansion and contraction of materials
  • Ageing of sealants
  • Small cracks around the window frame
  • Movement between the aluminium/uPVC frame and masonry

These issues can create gaps through which rainwater may enter.

Common signs of window leakage include:

  • Water entering from the sides of the window
  • Dampness around the window frame
  • Peeling paint
  • Blistering of wall paint
  • Damp patches below the window
  • Water collecting on the window sill
  • A musty smell near the window
  • Damaged plaster around the window

If you are experiencing these problems during the monsoon, it is important to identify where the water is actually entering from.

Window Leakage in Mumbai: Why Is It So Common?

Mumbai's monsoon can be extremely demanding on buildings.

Long periods of rainfall, high humidity and wind-driven rain can expose weaknesses in window joints and external walls.

In high-rise buildings, the problem can become even more noticeable.

Strong winds can push rainwater against the building façade and window frames. If there are gaps around the window, damaged sealant or cracks in the surrounding area, water can find its way inside.

However, before selecting a solution, the source of leakage must be properly identified.

Is the Leakage Coming from the Window Frame?

Not every wet wall near a window means that the window itself is leaking.

Water may enter from several locations, including:

1. Gaps Between the Window Frame and Wall

This is one of the common areas where leakage can occur.

The space between the window frame and masonry wall may not be properly sealed.

2. Damaged or Missing Sealant

Sealant around the window can deteriorate over time.

Cracks or gaps in the sealant can allow rainwater to enter.

3. Cracks in the External Wall

Sometimes the actual problem is not the window.

Rainwater may enter through cracks in the exterior wall and travel internally before becoming visible near the window.

4. Window Sill Problems

Improper slope, cracks or gaps near the window sill can also cause water accumulation and seepage.

5. Drainage or Weep Hole Issues

Certain window systems have drainage provisions. If these are blocked or improperly designed, water may not drain correctly.

This is why simply applying a material without identifying the source of leakage may not solve the problem permanently. One needs to inspect, identify the gaps, clean the surface, application of PU foam, trimming and sealing with proper waterproofing sealant is essential.

The exposed external joint may require a suitable weather-resistant sealant or waterproofing treatment, depending on the window system and site condition.

A professional approach is always better than simply filling visible gaps.

 

 

 

 

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