Increased Security
A locked second window is a serious deterrent — much harder to breach quietly than a single pane, and easily specified to insurance requirements.
Two barriers, twice the delay
Most opportunistic break-ins are abandoned within 60 seconds if they can't get in quickly. A key-locked secondary glazing unit adds a second frame, a second pane and a second lock — enough delay to make the target unattractive.
- Key-locking handles
- Multi-point lock option
- Laminated glass upgrade
- Anti-jemmy interlocks
Laminated safety glass
Optional 6.4mm or 6.8mm laminated glass holds together even when cracked, defeating the smash-and-grab method that gets past standard toughened glass. Independently tested to EN 356 P2A/P4A.
Ideal for
Ground-floor sashes, accessible flat roofs, back-of-house commercial windows, listed properties where the original single-glazed window can't be replaced or fitted with modern locks.
- Ground-floor sashes
- Rear commercial windows
- Listed and heritage sites
- Insurance-mandated upgrades
Ready for a free, no-obligation quote?
South Yorkshire's specialists in secondary glazing — survey, measure, manufacture and install.