Triple Glazing Enfield: Windows & Doors
Triple glazing for cold rooms, busy roads and large panes of glass. uPVC or aluminium, with honest advice on whether it is worth it. Free survey and quote.
Triple glazing uses three panes of glass in one sealed unit. It loses less heat than double glazing. It is not right for every window.
We fit triple glazing in new windows and doors. We also tell you when double glazing is enough.
What Is Triple Glazing?
A triple glazed unit has three panes with two gaps between them. The gaps are usually filled with argon gas. Low-emissivity coatings on the glass reflect heat back into the room. A warm-edge spacer around the unit reduces heat loss at the edges.
Units come in different widths. A wider unit has bigger gaps, which helps insulation, but the frame must be deep enough to hold it. We check this at the survey.
Triple Glazing or Double Glazing?
| Double glazing | Triple glazing | |
|---|---|---|
| Heat loss | Low | Lower |
| Weight | Lighter | Heavier |
| Cost | Lower | Typically 20 to 35 percent more |
| Cold spots near glass | Fewer than old windows | Fewer still |
| Sun warmth through the glass | More | Slightly less |
| Frame needed | Standard | Often deeper |
Is Triple Glazing Worth It?
It helps most in:
- North-facing rooms that stay cold
- Rooms with large glazed areas, such as extensions and conservatories
- Homes on busy roads, where noise matters
- Rooms you use all day, such as a home office
Double glazing is usually enough for:
- Small windows
- South-facing rooms that get plenty of sun
- Rooms you rarely use
- A tight budget
The saving over good modern double glazing is modest, so the extra cost takes a long time to pay back. Choose triple glazing for comfort first, and energy saving second.
Things to Know Before You Choose It
- It is heavier. The frame, hinges and hardware must be strong enough. We specify them for the unit.
- It is thicker. Triple units need a deeper frame, so they can’t always replace the glass in an old frame. New frames are often needed.
- Slightly less sun warmth. The extra pane lets in a little less solar heat and light.
- Condensation on the outside. Very good insulation keeps the outer pane cold, so a film of dew can form on the outside on cold, still mornings. It is normal and clears as the day warms. It shows the glass is doing its job.
Noise
An extra pane can help with noise, but not always. A well-chosen double glazed unit with thicker or laminated glass can match or beat a standard triple unit. The seals, the frame and any trickle vents also matter.
If noise is your main reason, tell us. We can specify acoustic glass in a double or triple unit.
Where We Fit Triple Glazing
We can specify triple glazing in a wide range of windows and doors:
- uPVC casement windows and aluminium casement windows
- Tilt and turn windows
- French doors, bi-fold doors and sliding patio doors
- Conservatories, orangeries and glass extensions
Some products suit triple glazing better than others. We tell you at the survey.
Frames: uPVC or Aluminium
uPVC frames insulate well and cost less. Aluminium frames are slimmer and stronger, which helps with heavy units and big openings. Both can carry triple glazing when the profile is deep enough.
Period Homes and Conservation Areas
Triple units are thicker, which can change the look of slim period frames. In a conservation area, check with the council before ordering, because Article 4 directions can restrict window changes on visible elevations. They cover most of Enfield’s conservation areas, including Enfield Town, Winchmore Hill, Southgate Green, Forty Hill and Bush Hill Park.
For sash windows, see our sliding sash windows page.
Triple Glazing Costs in Enfield
These are guide prices. The real price depends on your property, so we confirm it after a survey.
Triple glazing typically adds about 20 to 35 percent to the price of the same window in double glazing.
- Standard uPVC window, double glazed: about £500 to £1,200
- The same window, triple glazed: about £650 to £1,600
Doors follow the same pattern.
What changes the price: the size, the frame material, the unit width, the glass type, the number of windows and any acoustic glass.
How the Installation Works
- Enquiry. Tell us which rooms and windows, and why you want triple glazing.
- Survey. We measure each opening and check the frame depth.
- Quote. You get an itemised quote covering the units, frames, colour and hardware.
- Manufacture. Units are made to measure. We confirm the lead time when we quote.
- Fitting. Our fitters do the work. We do not use subcontractors. We remove and dispose of the old windows.
- Checks and certificate. We test every window and lock and fix any snags. A FENSA certificate is issued on completion.
Get Your Free Quote
We survey across EN1, EN2 and EN3, and nearby Barnet, Southgate, Palmers Green, Winchmore Hill and Edmonton. Surveys and quotes are free and carry no obligation.