What is the price of security double-glazed units in Harrow?
Typical prices for security double-glazed units in Harrow are £174 to £594 including VAT (£145 to £495 plus VAT) per unit, supplied and fitted. Use the quote tool for a guide figure, then we survey and confirm a fixed price.
A security double-glazed unit is a sealed unit in which one or both panes are laminated glass, usually the inner pane, so the window keeps its insulation but resists being broken through. It fits the same frame as a standard unit and is the simplest way to add security to modern windows and doors.
Glass and fitting options
- Laminated inner pane, outer pane or both
- Low-E coating and argon fill for insulation
- Toughened outer pane where safety glass is required
- 24 mm, 28 mm and other overall thicknesses to suit frames
- Obscure and decorative glass for bathrooms and doors
- Security glazing tape or clips where beads are external
Fitting in Harrow and nearby
From the HA1 district we also cover Wembley (2 miles) and Northolt (3 miles). Survey dates depend on installer availability.
Greater London has every kind of glazing, from Georgian sashes and Victorian bays in conservation areas to high-street shopfronts, office curtain walling and new-build flats.
This glazing suits:
- Glazed back and side doors
- Windows in flats on walkways and balconies
- Patio doors and bifolds
- Ground-floor and basement windows
Questions we will ask at the survey
Which pane is laminated
Laminating the inner pane is the usual security choice. Laminating both panes adds protection on high-risk elevations.
Energy performance
Choosing low-E glass, argon and warm-edge spacers keeps the window as efficient as possible, often better than the unit being replaced.
Building regulations and safety in England
Security rules for new homes
Approved Document Q has applied to new homes in England since 1 October 2015. Easily accessible doors and windows, meaning any part within 2 m vertically of the ground or another accessible surface, should meet PAS 24 or an equivalent, and glazing in doors and in windows within 400 mm of a door should be laminated to at least BS EN 356 P1A. It does not apply when you change the glass in an existing home, although it is a sensible benchmark.
Listed buildings and conservation areas
In England, listed building consent from the council may be needed to replace historic glass such as crown or cylinder glass, or to alter glazing bars, sashes and frames. Historic England publishes guidance on traditional windows. Secondary glazing and window film are often easier to agree because they can be removed later, but the council's conservation officer makes the decision.
How it works
- Postcode and a few photos
- On-site survey
- Fixed written price and lead time
- Fit, check and explain
Security double-glazed units in Harrow: questions
Can you survey in Harrow and nearby towns?
Yes. Surveys in Harrow, Wembley and Northolt are booked around installer availability.
How long do new units take?
Units are made to order after the survey. Lead times vary with glass type and size, and we confirm them when we quote.
Do security units reduce noise?
Laminated glass already damps sound better than plain glass, and acoustic interlayers improve it further, which helps on busy roads.
Will a laminated unit be heavier?
A little. A laminated pane weighs about the same as a solid sheet of the same thickness. On large opening sashes we check hinges and friction stays.
Security double-glazed units in nearby towns
Other glazing in Harrow
- Glazing bead security upgrades
- Broken glass replacement
- Security window film
- Laminated glass retrofit
- Counter and reception security screens
- Commercial reglazing
Start with a guide price online, then we survey and fix the price in writing.
