Security secondary glazing in Dorset: what will it cost?
Our guide range for security secondary glazing in Dorset is £594 to £1,794 including VAT (£495 to £1,495 plus VAT) per window, including fitting. The survey is free for new installations and your fixed price follows in writing.
Security secondary glazing is a separate slim window fitted on the room side of an existing window, glazed with laminated glass so it forms a second barrier. It leaves the original window untouched outside, which makes it a common choice for listed buildings, conservation areas and period sash windows.
Specification at a glance
- Fixed within the reveal, leaving the original window untouched
- Noise and draught reduction
- Locks and catches that open from inside without a key
- Suits sash, casement and arched openings
- Laminated glass in slim aluminium frames
- Vertical sliding, horizontal sliding, hinged and lift-out styles
Covering Dorset
We can arrange surveys and fitting anywhere in Dorset, including Bournemouth and Poole. Dates depend on installer availability. Choose your town below for local details.
Dorset covers Bournemouth and Poole's seafront hotels, offices and shopping streets, Georgian fronts in Weymouth, and stone market towns such as Dorchester, Bridport and Sherborne.
Typical settings for security secondary glazing:
- Ground-floor flats in converted townhouses
- Offices in historic buildings
- Homes on busy roads wanting noise reduction
- Listed homes and buildings in conservation areas
Towns in Dorset
Getting the right glass for your building
Frame colour and sightlines
Slim frames that line up with the existing meeting rails make the secondary glazing almost invisible from outside.
Listed building consent
Internal secondary glazing is usually seen as reversible, but consent can still be needed. Check with the conservation officer first.
What the rules say in England
Windows needed for escape
Approved Document B expects many habitable rooms in houses, particularly upstairs, to have an escape window with a clear opening of at least 0.33 m², at least 450 mm high and 450 mm wide, with the bottom of the opening no more than 1,100 mm above the floor. Changing the glass does not alter that, but locks, secondary glazing and film must not stop the window opening. Laminated glass is hard to break through, so escape always relies on the window opening.
Replacing glass in an existing frame
Replacing only the glass or sealed unit in an existing frame is generally treated as a repair in England rather than notifiable building work. Replacing a whole window or door is notifiable and is normally certified through a competent person scheme or approved by building control. Either way, new glass in a critical location should still be safety glass.
How it works
- Postcode and a few photos
- On-site survey
- Fixed written price and lead time
- Fit, check and explain
Security secondary glazing in Dorset: questions
Which towns in Dorset do you cover?
We can arrange work anywhere in Dorset, including Bournemouth, Poole, Weymouth, Christchurch and Bridport, and in other towns across the area.
Is secondary glazing safe for escape windows?
It can be, as long as it opens quickly from inside without a key. We design catches and handles for that.
Does secondary glazing reduce noise?
Yes, often noticeably, because of the air gap between the two panes. Laminated glass helps further.
Will secondary glazing cause condensation?
A well-fitted unit usually reduces condensation on the inner pane. Some ventilation of the gap may be needed, which we discuss at the survey.
Other glazing in Dorset
- Laminated roof and conservatory glass
- Security glass for doors
- Patio and bifold door security glass
- Anti-bandit glass
- Display case security glass
- Laminated security glass
Start with a guide price online, then we survey and fix the price in writing.