Window and door seepage sealing
A window is a hole in a wall with a frame put back into it, and the seal between the two is the only thing keeping the rain out. It is a few millimetres wide, on most buildings it is filled with plaster, and plaster is not a sealant.
- 5.0 ★
- 195+ ratings
- Vijayawada
- our base — same-day visits in the city
- All days
- site visits, including Sundays
- AP & Telangana
- we travel for larger jobs
You probably need this if…
- A wet patch below the window after rain, which dries out between storms
- Water on the sill inside, or running down the inside face of the frame
- The plaster line around the frame cracked all the way round
- Curtains, the sill or the wall below stained or blistering
What causes it
The same wet patch can come from different places, and each one needs a different fix. This is what we look for on site.
- 01
The frame-to-wall gap filled with plaster
Plaster is rigid and the frame moves with heat. The joint cracks all round within a year or two and from then on it is an open slot into the wall.
- 02
A sill with no slope, or the wrong slope
A flat sill holds water against the bottom of the frame. A sill that falls towards the room delivers it straight inside.
- 03
No drip groove under the sill
Water running off the sill clings to the underside and tracks back along it into the wall. A small groove cut under the outer edge stops it dead.
- 04
Weep holes blocked
Aluminium and UPVC frames are designed to drain through small holes in the bottom track. Painted over or filled with dust, the frame fills up and overflows inwards.
- 05
The wrong sealant, or one past its life
An interior acrylic used outside chalks and cracks in a season. Even a good sealant hardens eventually and pulls away from one face of the joint.
Our window seepage process
Step by step, in this order. Nothing is skipped to finish a day early.
- 01
Water test the window
The outside is hosed in sections, low to high, with someone watching inside. That tells us whether it is the joint, the sill, the weep holes or the glazing bead.
- 02
Rake out the joint
Old plaster and sealant are cut out all round the frame to a proper depth. Sealant run over the top of the old joint is the most common failed repair we see.
- 03
Back the joint
A backer rod is pushed in so the sealant is the right depth and sticks to two faces only. A bead stuck on three faces tears itself the first time the frame moves.
- 04
Seal and tool it
A UV-stable polyurethane is gunned in and tooled to a shape that sheds water rather than holding a line of it against the frame.
- 05
Sill and drip groove
The sill is sloped away from the frame and coated, and a groove is cut under the outer edge so water leaves the sill clear of the wall.
- 06
Clear the weep holes and test again
Drainage holes in the frame are cleared, and the same hose test is repeated after curing before we call it done.
What is included
- A hose test before and after, watched from inside as well as outside
- Complete removal of old plaster and sealant around the frame
- Backer rod and a UV-stable polyurethane sealant, tooled to shed water
- Sill slope correction, coating and a drip groove under the nose
- Clearing of weep holes on aluminium and UPVC frames
Free site visit. You get the measured area and a written scope before any work starts.
+91 73823 58857Frequently asked
Request a site visit
Tell us what you are seeing and where. We will come and check, measure the area and give you a clear scope — the same day wherever we can.
- We work in
- Vijayawada
- Guntur
- Amaravati
- Mangalagiri
- Tenali
- Eluru
- Gannavaram
- Machilipatnam
- Bhimavaram
- Rajahmundry
- Kakinada
- Visakhapatnam
Based in Vijayawada, so we are quickest in and around the city — and we take up work across Andhra Pradesh and Telangana.
Tell us where it leaks.
We will come and check before the next rain, measure the area and give you a clear scope in writing.