How to Choose the Right Window Glass — Complete Guide

How to Choose the Right Window Glass

Glass is a key component of any aluminium window. Choosing the right glass improves your home's comfort, safety and energy savings. The frame decides how the window opens and how long it lasts, but the glass decides how much heat comes in, how much traffic noise you hear at night, and what happens if a child or a stray football hits the pane. This guide walks through each glass type, what it costs as an upgrade, and where in a Malaysian home it makes the most sense.

Types of Glass

1. Clear Glass (Standard): 5mm

• The most affordable option
• Suitable for standard aluminium windows
• 100% light coming in

Every AluFrame window comes with standard 5mm clear glass included in the base price, so a sliding window from RM180/unit or a casement window from RM250/unit already has glass fitted. For bedrooms and living rooms that face a neighbour's wall or a shaded garden, 5mm clear glass is usually all you need.

2. Tempered Glass

• 4-5x stronger than standard glass
• Breaks into small pieces (safer)
• COMPULSORY for doors and upper-floor windows
• Add RM30-50/unit

Tempered glass is heat-treated so that when it does break, it crumbles into small blunt granules instead of long shards. That is why it is required for aluminium doors from RM450/unit and bi-fold doors from RM800/unit, where a person could walk into the pane. It is also the right choice for windows above ground level and for bathroom windows where steam and temperature changes stress the glass.

3. Tinted Glass

• Cuts solar heat by up to 50%
• Privacy from the outside
• Colours: green, blue, grey, bronze
• Add RM20-40/unit

Afternoon sun on a west-facing wall is the single biggest source of heat in most Malaysian homes. Tinted glass on those windows reduces the load on your air conditioner and stops the room from feeling like an oven at 4pm. Grey and bronze tints suit dark powder coated frames, while green tint pairs well with natural silver.

4. Double-Glazed (Insulated Glass)

• 2 layers of glass with an air gap in between
• Blocks noise by up to 80%
• Blocks heat by up to 60%
• Add RM80-150/unit

Double glazing is the upgrade for homes beside a highway, an LRT line, a school or a busy commercial row. The sealed air gap between the two panes interrupts sound and heat at the same time. It works best on fixed panels and casement windows, which close tightly against a seal. Read our dedicated double glazed window guide for more detail on how the air gap works.

5. Laminated Glass

• Glass with a PVB layer in the middle
• Does not shatter completely on impact
• Very safe for families with young children
• Add RM50-80/unit

Laminated glass holds together when cracked, because the plastic interlayer keeps the pieces bonded. It is the glass used in car windscreens. For a nursery or a low window in a playroom, it gives you peace of mind, and it also slows down anyone trying to break in.

Recommended Glass by Location

Location	Recommended Glass Type
Windows facing the main road	Double-glazed (noise reduction)
Upper-floor windows	Tempered (safety)
Windows facing direct sun	Tinted or double-glazed
Sliding/bi-fold doors	Tempered (compulsory)
Baby or children's room	Laminated (safety)
Standard windows	5mm clear glass

A few Malaysian specifics worth adding. High-rise condo and apartment units above the tenth floor get stronger wind pressure during monsoon storms, so tempered glass is worth the small upgrade even where it is not compulsory. Coastal homes in Penang, Terengganu and Sabah should ask for glass with a clean sealed edge on double-glazed units, because salt air attacks a poor seal first. And if you live in a strata building, the management may specify a tint colour so the facade looks uniform, so check before you order.

Worked Example: Glass Upgrades for a Corner Terrace

A corner-lot terrace house in Selangor with 8 windows might be planned like this. Two front windows facing the road get double glazing at RM80-150/unit extra. Two upstairs bedroom windows get tempered glass at RM30-50/unit extra. Two side windows that catch the afternoon sun get tinted glass at RM20-40/unit extra. The remaining two windows keep the included 5mm clear glass. On top of 8 casement windows from RM250/unit, the glass upgrades add between RM260 and RM480 in total, with installation at RM50-100 per unit on top. That is a modest sum for a house that stays cooler, quieter and safer for the next 30 years.

What to Check Before You Order

• Confirm which windows face the road, the sun and the neighbours, and match the glass to each opening rather than choosing one type for the whole house.
• Ask for a free site survey so the installer can measure the openings and note any upper-floor or door positions where tempered glass is compulsory.
• Check the upgrade price per unit in writing: tempered RM30-50, tinted RM20-40, laminated RM50-80, double-glazed RM80-150.
• Make sure the 10-year warranty on profiles and 5-year warranty on accessories are stated on your quote.
• If you are replacing old windows, confirm that removal is included and that installation of 6-10 windows will be done in 1-2 days.

Parents of young children can also read our article on child-safe window options for family homes, which covers grille windows from RM320/unit alongside laminated glass.

Conclusion

Investing in the right glass pays off in a big way when it comes to comfort and safety. The base 5mm glass is fine for sheltered openings, but a few targeted upgrades on the windows that face the road or the sun make a bigger difference to daily life than almost any other part of a renovation. Choose the glass for each opening, not for the whole house at once.

Contact AluFrame for free glass advice! WhatsApp us with photos of your windows and where they face, and we will send a free quote within 24 hours, with a free site survey to confirm the measurements before anything is fabricated.