Aluminium Sliding Window

Domal, standard or slim: the aluminium section matters most

Aluminium windows are built from extruded profiles, and the profile series decides how the window looks, how strong it is and how well it seals.

Domal sections have a rounded, moulded face and are the commonest residential choice. They are economical, suit standard window sizes, and are available in two-track and three-track (with mesh) versions.

Standard sliding sections are flatter and squarer, and come in a range of wall thicknesses. A heavier gauge resists flexing on wider shutters.

Slim or premium sliding systems have narrow visible frames, larger glass, better rollers and multi-point or interlock seals. They suit large openings, living rooms and any window where the view matters.

Whatever the series, the details that make a window good are the same: stainless or sealed bearing rollers, brush (wool-pile) seals at the interlock, EPDM gaskets around the glass, and drainage slots in the bottom track so rain does not stand in it.

Frames can be anodised, or powder coated in white, black, grey, wood-effect or a colour to match the facade.

Glass choices: plain, toughened or double glazed

Most small windows use plain float glass, usually 5mm or 6mm, set in the shutter with a gasket.

For large shutters, low sills, bathrooms and anywhere a person could fall against the glass, toughened glass is the safer choice: it is several times stronger and breaks into small blunt pieces. Frosted or reflective glass suits bathrooms and street-facing rooms.

Where road noise is the problem, a double glazed unit (DGU) of two panes with a sealed air gap reduces noise and heat transfer. A DGU needs a section deep enough to hold it, which is often the deciding factor in whether aluminium or uPVC is the better frame. Our comparison of uPVC vs aluminium windows explains that trade-off in detail.

The third track is worth considering in Delhi NCR, where mosquitoes are a monsoon fact of life: a sliding mosquito mesh shutter on its own track lets the glass open with the mesh closed. Pleated or roller mesh can be fitted instead if you want it hidden.

Dust, rain and noise in Gurugram and Noida

Three local conditions shape how we specify windows here.

Dust. Construction, open plots and the pre-monsoon dust storms push fine dust through any gap. The defence is a well-fitted interlock with brush seals, a frame squared to the opening and silicone sealing between frame and wall. Gaps here are the subject of our window gap, dust and noise page.

Monsoon rain. Driving rain enters through blocked drainage slots or an unsealed frame joint. Correct weep holes and an outside sealant bead keep it out; see window leaking rain water.

Road noise. Flats facing the Dwarka Expressway, Golf Course Extension Road, the Noida Expressway or a busy sector road need better seals and possibly double glazing. A sliding window will never seal as tightly as a casement, so for a very noisy bedroom we may suggest a uPVC window instead.

In societies, replacing windows on the external face may need RWA approval for colour and section, so ask before ordering.

What changes the price of aluminium windows

Window prices depend heavily on the specification, so we quote after measuring rather than publishing a rate.

Section series and gauge. Domal is the most economical; slim systems cost substantially more.

Number of tracks. A three-track window with a mesh shutter costs more than a two-track one.

Glass. Plain float, toughened, frosted or a double glazed unit, in rising order of cost.

Finish. Anodised or powder coated, and standard or special colour.

Hardware. Roller quality, locks and handles.

Removal of old frames. Taking out old steel or aluminium frames and making good the plaster adds labour.

Height and access. Windows reached from inside are faster to fit than ones needing scaffolding outside.

We price each window on the written quote, so you can mix specifications, for example slim sections in the living room and domal in utility rooms. The uPVC window price guide also compares aluminium costs side by side.

Visit, fabrication, fitting and care

Book a site visit for ₹99, adjusted against the bill if you proceed; it is usually arranged within 24 to 48 hours. We measure every opening, check whether the walls are square, and agree section, glass and colour. The written, all-inclusive quote usually follows within about two hours of the visit and is valid for three days.

Fabrication begins on a 50% advance: profiles are cut, assembled and glazed to each opening's measurement. Fitting includes fixing the frame, packing and sealing it to the wall, and adjusting the rollers. The balance 50% is due on completion.

To keep the shutters gliding, vacuum the track monthly, keep the drainage slots clear before the monsoon, and never oil the rollers, since oil collects dust. If a window drags, see sliding window hard to slide. Other options are in the windows and doors catalogue.