Kolkata's older concrete-framed buildings in areas like North Kolkata and Howrah often have uneven openings from decades of monsoon exposure and settlement. UPVC frames with multi-chamber profiles and proper EPDM gaskets create a tight seal that reduces water ingress during heavy July rains while cutting heat gain in summer. Installers must check lintel condition and add steel reinforcements when sills show spalling before fixing new frames.
Newer apartments in Salt Lake and New Town use larger openings that benefit from reinforced mullions and low-E double glazing to handle both intense afternoon sun and high indoor humidity. Without correct drainage channels and weep holes, water can pool behind the frame during prolonged showers, leading to mold on interior walls. Experienced crews always slope the outer sill and apply neutral-cure silicone at the junction with external plaster.
UPVC Window Installation Near You — Choose Your City
Every city below has its own local UPVC Window Installation page with coverage details.
Installation timing matters because peak monsoon months bring sudden downpours that can damage unfinished reveals. Crews schedule work between showers and use temporary covers over openings. In older South Kolkata bungalows with timber sub-frames, the team removes rotted wood first and packs the gap with treated timber packers before anchoring the UPVC unit to avoid future movement.
Technician insight
In Kolkata the thing that catches most people out with UPVC window installation is the amount of hidden damage behind old steel frames in pre-1980s buildings around Park Circus and Bhowanipore; once you open the wall you often find corroded reinforcement that must be treated before the new frame can be anchored properly.
Salt Lake Apartment Window Upgrade
Heavy monsoon leaks had damaged the plaster below two large balcony windows in a 15-year-old Salt Lake Sector V flat. We removed the original steel frames, found water trapped behind the sill, treated the concrete, and installed new sliding UPVC units with improved external drainage. The owner reported no further seepage during the next season's rains.
UPVC Window Installation Services We Offer
✓Sliding UPVC Window Installation
Fits two or three-track sliding systems suited to Kolkata balconies where space limits outward opening.
✓Casement UPVC Window Installation
Installs side-hung casement windows with multi-point locking for better wind resistance during Nor'westers.
✓UPVC Window Replacement
Removes old steel or wooden frames and fits new UPVC units while preserving existing plaster lines in heritage properties.
✓Double Glazed UPVC Window Installation
Adds argon-filled double glazing to reduce condensation on glass surfaces common in humid Kolkata winters.
✓Fixed UPVC Window Installation
Provides non-opening fixed lights for stairwells and light wells where ventilation is not required.
UPVC Window Installation Cost in West Bengal
| Service | Typical Range | What Affects It |
|---|---|---|
| Standard 4ft x 4ft Sliding Window | ₹12,000–₹18,000 | Varies with track count and glass type |
| Casement Window Replacement | ₹15,000–₹25,000 per unit | Higher when old steel frame removal is needed |
| Double Glazed Fixed Window | ₹9,000–₹14,000 | Depends on size and argon fill option |
| Site Visit And Quote | Free | Within Kolkata municipal limits |
Ranges are typical for West Bengal and confirmed with an exact written quote before any work starts.
How it works
- 1
Site Measurement
Technician records exact opening sizes, checks wall condition, and notes drainage requirements in Kolkata's typical brick-and-plaster construction.
- 2
Frame Preparation
Old frames are removed, reveals are cleaned, and any damaged masonry is repaired before the new UPVC frame is positioned.
- 3
Installation And Anchoring
Frame is leveled, packed, and secured with corrosion-resistant screws into the concrete or brick, followed by foam insulation around the perimeter.
- 4
Sealing And Finishing
External silicone and internal trims are applied, hardware is fitted, and the window is tested for smooth operation and water tightness.
Pricing
Prices confirmed after on-site measurement; ranges reflect typical Kolkata jobs.