uPVC windows · Hertfordshire
Triple glazed uPVC windows in Hemel Hempstead
Looking at triple glazed uPVC windows for a home in Hemel Hempstead? We survey, quote and fit across Hertfordshire, and the HP3 postcode district is part of that.

A way to triple glaze a whole house without the timber or aluminium premium. Triple glazed uPVC windows are plastic-framed windows fitted with a sealed unit of three glass panes and two gas-filled cavities.
Winter light and glass choice in Hemel Hempstead
On the shortest day, Hemel Hempstead gets about 7 h 47 min of daylight and the midday sun reaches only about 15° above the horizon. Low winter sun means north-facing rooms here gain little solar heat, which is where triple glazing’s lower heat loss helps most.
Guide prices in Hemel Hempstead
| Guide | Supply and fit, inc VAT |
|---|---|
| Small window about 600 x 1000 mm (bathroom, landing) | £695 – £845 |
| Medium window about 1200 x 1200 mm (bedroom) | £895 – £1,095 |
| Large window about 1800 x 1200 mm (lounge) | £1,395 – £1,695 |
Guide prices. Your written quote after the free survey fixes the price for the specification shown.
Rules for uPVC windows in England
In England, replacement windows must meet 1.4 W/m²K, or a Window Energy Rating of band B or better. Replacement windows are a controlled fitting. A competent person scheme installer (such as FENSA or Certass) self-certifies the work and notifies the council within 30 days; otherwise a building control body approves it.
Planning: Replacing windows on a house is normally permitted development if the new ones look similar. New upper-floor windows in a side wall must be obscure glazed and fixed, or open only above 1.7 m. Flats and maisonettes have no householder permitted development rights, so a change that alters their appearance needs planning permission. An Article 4 direction in a conservation area may mean permission is needed, and listed buildings need listed building consent.
How it works
After the free survey you get a written quote naming the frame system, the glass build-up and the whole-window U-value for every item. Windows are made to order, then fitted, sealed and made good, one opening at a time.
- Free survey and a written quote fixed for the specification
- Glass build-up and whole-window U-value on every quote
- Written handover pack at the end of the job
- Guarantees on frames, units and fitting in writing
Questions from Hemel Hempstead
Will triple glazed uPVC windows look bulky?
The frames look much the same as good double glazed uPVC. The glass unit is thicker, but that sits inside the frame, so from outside the difference is hard to spot.
Can I have coloured uPVC triple glazing?
Yes. Woodgrain and solid-colour foils are available on the outside, inside or both. Colour adds to the price and can add a week or two to the lead time.
How long does it take to get triple glazed uPVC windows fitted in Hemel Hempstead?
After the survey, typical manufacture time is 4 to 6 weeks, and most homes are fitted in 1 to 4 days.
Do you fit triple glazed uPVC windows in Hemel Hempstead?
Yes. We arrange surveys and fitting in Hemel Hempstead and across Hertfordshire. Send your postcode and the windows or doors you want replaced, and we will book a free survey.
Nearby
Also near Hemel Hempstead: Berkhamsted (8 km), St Albans (8 km), Harpenden (10 km) and Watford (12 km).
Other products in Hemel Hempstead
- Aluminium windows
- Timber windows
- Alu-clad timber windows
- Casement windows
- Flush casement windows
- Tilt and turn windows
- Sash windows
- Bay and bow windows
- Fixed and picture windows
- Composite front doors
- French doors
- Sliding patio doors
- Bifold doors
- Glass-only replacement
- Acoustic triple glazing
- Security glazing
- Whole-house replacement
- New builds and self-builds
- Period homes and conservation areas
- Flats and apartments
- Passivhaus and EnerPHit
uPVC windows in Hemel Hempstead: book your free survey
Written quote fixed for the specification, after a free survey. Building Regulations sign-off by a competent person scheme installer or building control, as the law requires in England.
