If you’re pricing new windows for a house anywhere in Gauteng, aluminium window security comes up before anything else. It comes up before colour and usually before price. Most people calling us have already heard the story about burglars lifting the glass out of aluminium windows without breaking anything because a version of it goes around the neighbourhood groups every few months.
So let’s answer it the way we’d answer it standing in your kitchen. Yes, it happens. Cape Talk covered it as a housebreaking trend in the northern suburbs, and the method is exactly what the posts describe, clipping away the beading that holds the glass and lifting the pane out whole. What the posts never mention is that it only works on windows built and fitted a certain way, and you can spot those from the quote alone.
How the Glass Comes Out
The windows this works on all share the same shortcut, and Trellidor notes that the homes hit this way almost always had cheap or badly fitted windows.
Two failures do all the damage:
- External glazing beads: the strips holding the glass are clipped in from outside, where anyone can reach them.
- A failed wedge gasket: the rubber that should lock those beads in place is missing, brittle or the wrong size.
Where both are present, a thin blade releases the beading, the pane lifts out, and the burglar is inside while the alarm still thinks the house is sealed. On a well made window the same blade achieves nothing, because nothing on the outside face will release.
Aluminium window security is decided at the workbench, long before anyone arrives on site.
What a Secure Aluminium Window Looks Like on a Quote
Good aluminium window security is a set of ordinary trade details, and you can still add burglar bars on top if you want the visible deterrent.
These are the four things we build into every AIS window, and the four things worth checking on any quote you’re holding:
- Internal glazing beads: the beading sits on the room side of the frame, so nothing can be clipped away from outside.
- Wedge gaskets, specified in writing: the rubber seal that locks beading and glass into the frame as one unit.
- Laminated safety glass: two panes bonded to an interlayer so broken glass holds together. SANS glazing rules already require it in some positions, and ground-floor bedrooms are worth the upgrade.
- Multi-point locking: opening sections that latch into the frame at several points, so a sash can’t be levered open at the corner.
Test Our Aluminium Windows Yourself
SheerGuard, one of the security firms tracking this method, tells homeowners to vet the installer before anything else. We agree, so put us through it:
- Put your hands on a real sample: feel the beading and gasket on an AIS window before you commit.
- Ask us for references: recent customers in your area, and phone at least one.
- Compare the written spec: glazing, gaskets and locks, line by line. If any quote stays vague on those three, the price is usually low for a reason.
Our gallery shows what that standard of work looks like on installations across Pretoria and Gauteng.
Windows the Trick Doesn’t Work On
AIS manufactures and fits aluminium windows and doors across Pretoria and Gauteng, with over 16 years of experience on the team. Every job carries our 100% satisfaction guarantee, so if any part of the work falls short, we return until it’s put right. Quotes are free, and the security details above come standard, in writing.