Defence Colony · South Delhi

Windows, Grills and Glass Work in Defence Colony, Delhi

Defence Colony mixes original houses from the colony's early decades with newly rebuilt floors, so jobs split two ways: replacing old steel windows and grills, and fitting out new floors. Old walls are rarely square, so measuring carefully matters more here than the product chosen.

Updated 8 October 2026Defence Colony, Delhi

White uPVC casement window fitted into a plastered wall of an older Delhi house

Defence Colony was laid out after Independence, and it shows in the housing: a grid of blocks close to the Ring Road and Lala Lajpat Rai Marg, with houses of very different ages standing side by side. Some are still the original two-storey homes with steel-framed windows and heavy grills; others have been demolished and rebuilt as builder floors. Lajpat Nagar metro, on the Violet and Pink Lines, is the closest interchange, and the Defence Colony market, known for its restaurants, sits at the centre.

Old house or rebuilt floor? The job is different

The first thing we establish on a Defence Colony visit is the age of the building, because it changes almost every decision.

How an original Defence Colony house and a rebuilt floor differ for fabrication
	Original house	Rebuilt builder floor
Windows	Old steel or wooden frames, often draughty	Builder-fitted aluminium, sometimes basic
Walls	Out of plumb, repaired many times	Straight, but fresh plaster can be soft
Security	Grills on every opening, often rusted	Few grills, relies on the gate and lift
Bathrooms	Small, irregular, sometimes with a step	Standard sizes, ready for glass
Most common job	Window replacement, grills, safety door	Shower glass, railings, mesh

Replacing old windows without wrecking the plaster

Steel window frames from the colony's early years have usually rusted at the sill and no longer close tight, which lets in dust and noise from the flyover and the main roads. A uPVC window seals well with EPDM gaskets and needs little upkeep; an aluminium sliding window has slimmer sections and suits wide openings. The uPVC vs aluminium windows guide sets out the differences. Either way, the old frame comes out and the opening is rarely a true rectangle, so new frames are measured to the smallest dimension and packed and sealed on site.

Grills and safety doors

Many original houses still carry grills that have rusted where water sits on horizontal bars. An MS window grill made today should be primed and painted or powder coated, with bars arranged so water drains away. For the main entrance, an MS safety door in front of the wooden door is a common addition, especially on ground floors facing the lane. See metal gate and grill rusting for what causes most failures.

Fixing into old brickwork

Old walls can be soft or hollow behind the plaster. We test where anchors will go and, where needed, use longer fixings or chemical anchors, so a grill or safety door does not work loose within a year.

Bathrooms in rebuilt floors

New floors here usually come with bathrooms ready for glass. A frameless sliding shower partition, from ₹550 per sq ft, needs no space for a swinging door, which helps in the narrower bathrooms common on smaller plots. On front balconies, an SS balcony railing is the usual choice where the owner wants something durable and plain.

Nearby: Lajpat Nagar, East of Kailash and Hauz Khas and Green Park. For more, see windows and doors in Delhi and metal fabrication in Delhi. Book a visit and bring up the age of the house when you do.

Near Defence Colony

Common questions

Should I replace old steel windows in Defence Colony with uPVC or aluminium?

uPVC seals better and keeps out more dust and road noise, which matters near the flyover. Aluminium has slimmer frames and handles wide openings well. Both are quoted after the site visit because the opening sizes in older houses vary. We look at each window before recommending one.

Purani grill ko repair karein ya nayi lagwayein?

If the rust is on the surface and the bars and fixings are sound, cleaning, priming and repainting can extend its life. If the bars have thinned or the fixings have rusted inside the wall, a new grill is safer. We check this at the visit before quoting either option.

Will fitting new windows damage the walls of an old house?

Removing old frames usually disturbs some plaster around the opening. We cut the old frame out carefully, pack the gaps and seal around the new frame. Whether light plaster making-good is part of the scope is stated in the written quote, so you know exactly what is included.

How long does a shower partition take for a Defence Colony floor?

After the 50% advance, toughened glass generally takes 7 to 10 days to produce, and installation itself is usually short. The site visit, usually within 24 to 48 hours of booking, is where we measure, check the walls and confirm the design.