Security double-glazed units in St Austell: what will it cost?
Expect £174 to £594 including VAT (£145 to £495 plus VAT) per unit for security double-glazed units in St Austell. The written quote names the glass makeup, the price and the lead time before you commit.
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
- Made to measure for each sash, light and door panel
- Laminated inner pane, outer pane or both
- Security glazing tape or clips where beads are external
- Toughened outer pane where safety glass is required
- Low-E coating and argon fill for insulation
- 24 mm, 28 mm and other overall thicknesses to suit frames
Fitting in St Austell and nearby
From the PL25 district we also cover Bodmin (9 miles) and Truro (13 miles). Survey dates depend on installer availability.
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 double-glazed units:
- Replacing misted or damaged units
- Patio doors and bifolds
- Ground-floor and basement windows
- Glazed back and side doors
Getting the right glass for your building
Internal or external beads
If your beads are on the outside, we add security tape or clips so the unit cannot be lifted out after the beads are removed.
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.
What the rules say in England
Safety glass in critical locations
In England, section 5 of Approved Document K treats glazing in doors and in side panels within 300 mm of a door edge, from floor level up to 1,500 mm, and any other glazing below 800 mm, as a critical location. Glass there should break safely, be robust, or be guarded. Laminated or toughened glass meeting BS EN 12600 class 3 is the usual answer, rising to class 2 for door and side-panel panes wider than 900 mm.
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
- Tell us about the glazing
- Survey, measuring and frame check
- Written quote naming the glass
- Fitting and handover
Security double-glazed units in St Austell: questions
Can you survey in St Austell and nearby towns?
Yes. Surveys in St Austell, Bodmin and Truro are booked around installer availability.
Which pane should be laminated?
Usually the inner pane, so smashing the outer pane does not create an opening. On doors and low panes the outer pane is normally toughened to meet safety rules.
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.
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.
Security double-glazed units in nearby towns
Other glazing in St Austell
- Security glazed doors and screens
- Security secondary glazing
- Security glass for doors
- Security glass for home windows
- Laminated glass retrofit
- Glazing bead security upgrades
Get a guide price now and book your free survey in St Austell.