Aluminium sliding windows are the default in Klang Valley housing for good reason: they do not rot, they handle humidity, and they open without swinging into the room. What separates a good installation from a leaky one is not the brand of frame — it is sizing, flashing and how the opening was prepared.
Direct answer: KL Servis Rumah supplies and installs aluminium sliding windows from RM 320 per sq ft in Kuala Lumpur and Selangor, using powder-coated frames from suppliers such as Akasia, Hua Ho or YKK AP with tempered or laminated glass to suit the opening. Work carries a 12-month leak-free and hardware warranty.
If your existing window frame is sound and only the glass, rollers or seals have failed, repair is cheaper — see window repair and glass replacement.
Replace the window, or repair it?
| Situation | Usual answer |
|---|---|
| Glass cracked, frame straight and sound | Glass replacement |
| Window sticks or drags when sliding | Roller replacement |
| Handle or lock broken | Handle and hinge repair |
| Rain gets in but frame is straight | Window seal replacement |
| Frame corroded, twisted, or old timber/steel | New aluminium sliding window |
| Changing opening size or layout | New window plus masonry work |
If you are not sure which camp you are in, the fastest check is whether the frame is still square and the drainage slots are clear. Related problems: sliding window stuck, stuck window lock, rusting window grille.
What the RM 320 per sq ft start includes
- Site measurement of the structural opening, sill level and wall thickness.
- Powder-coated aluminium sliding frame and sashes.
- 5mm clear glass infill as standard for typical residential panels.
- Fixing, packing, flashing detail and weather sealing to the reveal.
- Removal and disposal of the old window sash where straightforward.
- Adjustment of rollers and locks, plus a water test on completion.
- 12-month warranty on installation seals and supplied hardware.
Tinted, laminated or thicker glass, mosquito netting, security grilles, colour upgrades, high-floor access and any masonry making-good are quoted separately.
Glass and frame choices that actually matter
Glass
- 5mm clear — the standard infill for typical residential sliding panels.
- Tempered — required where panels are large, low to the floor, or in high-traffic areas. Breaks into blunt granules.
- Laminated — an interlayer holds the glass together. Better for street-facing windows and noise.
- Tinted / low-E — reduces heat gain on west-facing rooms. Useful in KL afternoons, priced higher.
Frame
- Powder-coated finish holds up better than anodised in coastal and high-rain conditions.
- Heavier frame sections resist flexing on wide openings; wide spans should not use the thinnest residential profile.
- Ask what the frame section is on the quote, not just the brand name.
How we install
- Measure the structural opening in three places, check for out-of-square, note the sill fall and wall build-up.
- Quote with frame section, glass type, panel configuration and any masonry work itemised.
- Fabricate — aluminium frames typically take 3–5 working days; glass 5–7 working days.
- Remove the old window carefully. Steel and timber frames often bring plaster with them; we allow for making-good.
- Install — set the frame plumb and square, pack correctly, never force it into a distorted opening.
- Seal — flashing and weather sealant on the outside, backer where the gap is wide, neat internal finish.
- Test — slide, lock, check drainage slots, and water-test before handover.
Cost
| Item | Starting price |
|---|---|
| Aluminium sliding window | From RM 320 / sq ft |
| Glass replacement (existing frame) | From RM 200 |
| Frameless shower screen | From RM 420 / panel |
| Glass office partition | From RM 220 / sq ft |
| Wall mirror installation | From RM 320 |
Cost varies with size, frame section, glass specification, floor level and whether masonry work is needed. For a quick range before booking a measurement, try the window replacement estimator or the glass replacement calculator.
Condominium and high-rise notes
- Most management offices require a renovation permit and deposit before window work, even for like-for-like replacement.
- Facade uniformity rules often restrict frame colour and panel layout. Confirm before ordering.
- Material movement is usually limited to service lifts and specific hours.
- Debris removal and lift protection are commonly conditions of approval.
We ask about building rules during measurement so the fabrication order does not need to change later.
Common mistakes
- Ordering from a rough tape measurement. Aluminium and glass cannot be trimmed after fabrication.
- Sealing over the frame drainage slots, so rainwater has nowhere to escape and backs up inside.
- No flashing at the head, so water tracks down behind the frame and stains the internal wall.
- Choosing the thinnest frame profile for a wide opening, then living with flex and rattle.
- Replacing a window when the leak is actually coming from the wall above. Check wall dampness and efflorescence repair.
- Removing a security grille without a plan to refit or replace it.
Frequently asked questions
How long does installation take?
Fabrication is typically 3–5 working days for the frame and 5–7 for glass. Installation of a standard residential window is usually completed in one visit.
Can you match my existing window colour?
Common powder-coat colours are readily available. Exact matching of an aged finish is not always possible; we will show the closest standard option at measurement.
Do I need tempered glass?
For large panels, panels close to floor level and areas where impact is likely, yes. For a typical small bedroom window, 5mm clear is standard. We advise per opening.
Can you install mosquito netting or grilles at the same time?
Yes, if specified upfront so the frame is ordered with the right provision. Retrofitting later is possible but less neat.
Will a new window stop my rain leak?
Only if the leak is coming through the window. If water is entering through the wall, sill or above the frame, that needs waterproofing rather than a new window. We identify the source at measurement.
Book a window measurement
Whether you are replacing corroded steel windows, upgrading a whole floor of a terrace house, or fitting out a condo unit, KL Servis Rumah measures and installs across Kuala Lumpur and Selangor. Send photos of the window from inside and outside — request a sliding window quote.