Security glazing · Kent
Laminated security triple glazing in Sevenoaks
We arrange surveys and fitting of laminated security triple glazing in Sevenoaks and the TN13 area, with a written, fixed quote after a free survey.

Security and safety glazing in one triple unit. Laminated security triple glazing uses a pane made of two sheets of glass bonded to a plastic interlayer, so it cracks but stays in place when hit.
Winter light and glass choice in Sevenoaks
In Sevenoaks, midday sun in late December sits around 15° high, with roughly 7 h 52 min of daylight. For windows facing north or shaded by neighbours, cutting heat loss matters more than solar gain; on open south-facing glass, ask about a higher solar-gain unit.
Guide prices in Sevenoaks
| Guide | Supply and fit, inc VAT |
|---|---|
| Small window about 600 x 1000 mm (bathroom, landing) | £745 – £895 |
| Medium window about 1200 x 1200 mm (bedroom) | £995 – £1,295 |
| Large window about 1800 x 1200 mm (lounge) | £1,495 – £1,895 |
Guide prices. Your written quote after the free survey fixes the price for the specification shown.
Rules for security glazing in England
In England, replacement windows must meet 1.4 W/m²K, or a Window Energy Rating of band B or better. Replacement windows are a controlled fitting. A competent person scheme installer (such as FENSA or Certass) self-certifies the work and notifies the council within 30 days; otherwise a building control body approves it.
Planning: Replacing windows on a house is normally permitted development if the new ones look similar. New upper-floor windows in a side wall must be obscure glazed and fixed, or open only above 1.7 m. Flats and maisonettes have no householder permitted development rights, so a change that alters their appearance needs planning permission. An Article 4 direction in a conservation area may mean permission is needed, and listed buildings need listed building consent.
How it works
You will know exactly what you are buying: the quote states the unit build-up, frame, finish, fitting work and how Building Regulations compliance is handled. On fitting day each opening is replaced and closed up before the team moves on.
- Every opening measured, including escape and vent needs
- Frames rated for the weight of triple glass
- Old windows removed and taken away
- Each opening closed up the same day
Questions from Sevenoaks
What does PAS 24 mean?
PAS 24 is a British test standard for the security of doors and windows against attack. We specify products tested to it.
Do I have to have security glass?
Not for replacements, but it is worth it on ground-floor and easy-access windows.
Do I need permission for laminated security triple glazing in Sevenoaks?
In England, like-for-like replacements on a house are normally permitted development; flats need permission if the change alters their appearance, Article 4 areas may need permission, and listed buildings need listed building consent. Check whether your street is in a conservation area or covered by an Article 4 direction before changing the style.
How long does it take to get laminated security triple glazing fitted in Sevenoaks?
After the survey, typical manufacture time is 4 to 6 weeks, and replacing the units usually takes a few hours to a day.
Nearby
We also cover nearby Tonbridge (10 km), Swanley (14 km), Tunbridge Wells (16 km) and Caterham (19 km).
Other products in Sevenoaks
- uPVC windows
- Aluminium windows
- Timber windows
- Alu-clad timber windows
- Casement windows
- Flush casement windows
- Tilt and turn windows
- Sash windows
- Bay and bow windows
- Fixed and picture windows
- Composite front doors
- French doors
- Sliding patio doors
- Bifold doors
- Glass-only replacement
- Acoustic triple glazing
- Whole-house replacement
- New builds and self-builds
- Period homes and conservation areas
- Flats and apartments
- Passivhaus and EnerPHit
Security glazing in Sevenoaks: book your free survey
Written quote fixed for the specification, after a free survey. Building Regulations sign-off by a competent person scheme installer or building control, as the law requires in England.
