Double Glazing Welwyn Garden City, Windows, Doors & Conservatories
Double glazing in Welwyn Garden City is supplied and fitted by Apex Windows, covering homes from the 1920s neo-Georgian semis of Handside and the west side to the 1970s New Town estates of Panshanger.
Every window and door is made to measure, cutting heat loss and improving security. All prices include VAT and fitting. Get a real price now using the instant online calculator; no rep visit, no waiting.
Our Products
Need to speak to someone?
Call us today and speak to our friendly team who are ready to help discuss your needs.
Office Hours: Mon - Fri | 08:00 - 17:00
Why Choose Apex Windows in Welwyn Garden City?
Apex Windows has been fitting windows and doors in Welwyn Garden City and across Hertfordshire since 1989. There’s no parent company, no middlemen, and no subcontractors: every fitter who comes to your home works directly for Apex.
That’s what keeps the work consistent and the pricing straightforward. VAT and fitting are included in every quote.
About Apex Windows
Apex Windows has been fitting windows and doors in Welwyn garden City and across Hertfordshire since 1989. Every fitter on every job is directly employed by the company. There are no subcontractors, no third-party crews, and no variation in the standard of work you get.
VAT and fitting are included in every price. What the calculator shows you is what you pay.
Our Double Glazing Service in Welwyn Garden City
-
uPVC Windows in Welwyn Garden City
-
Composite and uPVC Doors in Welwyn Garden City
-
Conservatories in Welwyn Garden City
Most WGC homes already have double glazing, so the question is usually whether to repair or replace. For the 1920s and 1930s Garden City semis, sliding sash windows or flush sash windows keep the period character intact. Casement windows suit the post-war and Panshanger stock.
All windows use LINIAR profiles and are rated A+13 for double glazing or A++21 for triple, with internal beading and a multi-point shoot-bolt locking system as standard. Apex also carries out double glazing repairs and replacement sealed units where frames are sound but units have failed.
With 193 burglaries recorded in WGC in the 12 months to January 2026, door security is a practical concern rather than a selling point. Composite and uPVC front doors from Apex carry multi-point locking and toughened safety glass as standard.
Patio and French doors are popular on the larger-plot west side properties where rear garden access matters. VAT and fitting are included. Use the instant online calculator for a door price.
The generous rear gardens on WGC’s 1920s and 1930s west side semis suit conservatories well, and Edwardian conservatories complement the neo-Georgian architecture without looking out of place. Victorian conservatories work equally well on the larger detached plots. Modern glazing keeps them comfortable year-round.
Apex manages the project from design to completion with a single point of contact and a 10-year insurance-backed guarantee through InstallSure. Speak to our team about your garden and we’ll advise on style and size.
Welwyn Garden City’s housing spans 1920s neo-Georgian semis on the west side, post-war New Town stock to the north and east, and the more recent Panshanger estate. That mix means window and door requirements vary considerably: period character on one street, straightforward unit replacement on the next.
What Our Customers Say
Frequently Asked Questions
My home is on the East Coast Main Line side of WGC. Will new windows actually reduce the noise?
Yes, noticeably. The East Coast Main Line carries frequent high-speed services through WGC, and properties within earshot are dealing with a different noise problem to general road traffic. Double glazing with a wider air gap between panes absorbs more low-frequency rail noise. Triple glazing, rated A++21, reduces it further still. If noise is your main reason for replacing, it’s worth discussing the glass specification with the team before ordering.
My property is in the Beehive conservation area. Do I need planning permission to replace my windows?
It depends on your property and what you’re replacing them with. The Beehive conservation area, which covers streets including Beehive Green, Beehive Lane, Graysfield and Hillside, sits under Welwyn Hatfield Borough Council’s conservation area controls. Permitted Development rights are reduced in these areas, and the council expects window replacements to match the original materials and style. Check with Welwyn Hatfield Borough Council before proceeding. FENSA registration confirms building regulations compliance once work is complete, but it doesn’t replace planning permission where that’s required.
My sealed units are misting up but the frames still look fine. Do I need a full replacement?
Not necessarily. Misting between the panes means the sealed unit has failed, but if the LINIAR uPVC frame itself is sound, Apex can replace the units without touching the frames. Full window replacement makes more sense where frames are warped, draughty, or more than 20 years old. A quick inspection will tell you which applies.
The original windows on my 1930s Garden City semi are timber framed. Can you replace them with uPVC?
Yes. LINIAR uPVC profiles are available in a range of woodgrain finishes that work well on the 1930s neo-Georgian stock on WGC’s west side. Flush sash and sliding sash styles replicate the original window proportions more closely than standard casements, and they won’t rot, warp, or need repainting. The result looks in keeping without the maintenance overhead of timber.
Are you FENSA registered?
Yes. Apex Windows is FENSA registered (No. 31157). FENSA registration confirms that your installation complies with current building regulations, and Apex notifies the local authority on your behalf. You receive a FENSA certificate on completion, which you’ll need when you come to sell your home.
Do I need to wait for a salesperson to visit to get a price?
No. Apex’s instant online calculator gives you a real, accurate price for windows or doors in Welwyn Garden City without a rep visiting your home. Put in your requirements, get your price in under 10 seconds, VAT and fitting included. No appointment, no pressure, no commission-driven salesperson at the door.Â
Is it worth upgrading to triple glazing in Welwyn Garden City?
If your home is below EPC C, the upgrade to triple glazing is worth the cost. Above that threshold, noise reduction is the stronger argument: properties near the A1(M) or the East Coast Main Line get a meaningful improvement in comfort that A+13 double glazing won’t fully deliver. Either way, new frames make as much difference as the glass itself on WGC’s older Garden City stock.
Instant Online Calculator
Use our online calculator and get a quote in LESS THAN 10 SECONDS!
All prices include fitting & VAT. No hidden extras.