Security secondary glazing in Cornwall: what will it cost?
Budget £594 to £1,794 including VAT (£495 to £1,495 plus VAT) per window for security secondary glazing in Cornwall, supplied and fitted. Larger panes, thicker makeups and difficult access cost more; the price is fixed in writing after the survey.
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.
What you can specify
- Vertical sliding, horizontal sliding, hinged and lift-out styles
- Suits sash, casement and arched openings
- Noise and draught reduction
- Colour-matched frames to suit the room
- Fixed within the reveal, leaving the original window untouched
- Locks and catches that open from inside without a key
Covering Cornwall
We can arrange surveys and fitting anywhere in Cornwall, including Redruth and Falmouth. Dates depend on installer availability. Choose your town below for local details.
Cornwall's granite and slate cottages, harbourside shops and holiday lets face salt-laden coastal weather, and towns such as Truro, Falmouth and St Ives have conservation areas in their centres.
Typical settings for security secondary glazing:
- Homes on busy roads wanting noise reduction
- Offices in historic buildings
- Ground-floor flats in converted townhouses
- Period sash windows with original glass
Towns in Cornwall
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.
How it opens
Match the opening style to the original window so both can be opened, cleaned and used for ventilation.
What the rules say in England
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.
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
- Guide price online or by phone
- Survey in Cornwall
- Accept the fixed quote
- Fitted by glaziers working under our contract
Security secondary glazing in Cornwall: questions
Which towns in Cornwall do you cover?
We can arrange work anywhere in Cornwall, including Redruth, Falmouth, St Austell, Truro and Camborne, 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.
Do I need permission for secondary glazing in a listed building?
It depends on the building and the council. Internal secondary glazing usually has less impact than replacement windows, but listed building consent may still be needed. Ask the conservation officer before ordering.
Other glazing in Cornwall
- Misted unit replacement with laminated glass
- Security double-glazed units
- Blast-resistant glazing
- Bullet-resistant glass
- Security glazed doors and screens
- Glazing bead security upgrades
Tell us about the glazing and we will come back with a guide price.