Timber Windows London
If you’re looking for timber windows in London, you’ve probably already noticed the market is full of companies claiming to offer bespoke products. At International Windows Group, we manufacture and install timber windows across Greater London — from period properties in Hampstead to new builds in Wembley. Every window we make is built to the exact dimensions of your opening. No off-the-shelf sizes, no compromises on profile or glazing specification.
You can review our completed projects in our timber windows portfolio or find out more about how we work on our About Us page.
Timber Window Styles We Supply & Install
We cover the full range of timber window types used in London properties. Each style is manufactured to order and available in a range of timber species, finishes and glazing configurations.
Timber Sash Windows
The defining window of Victorian and Georgian London. Vertically sliding, traditionally weighted, available in single or double glazing. Our most requested style — see the full range on our timber sash windows page.
Casement Windows
Side-hung or top-hung, available in flush and stormproof profiles. Suited to properties where sash windows aren’t the right fit, without compromising on quality or thermal performance. More detail on our casement windows page.
Heritage Windows
For properties in conservation areas or on the statutory list. Profiles and finishes matched to original specifications, with supporting documentation available for planning applications. See our heritage windows page.
Conservation Windows
Slim sightlines, authentic glazing bar profiles and traditional putty or bead glazing details — designed to satisfy conservation officer requirements without thermal compromise. More on our conservation windows page.
Timber Doors
We also manufacture and install timber doors in London — front doors, French doors, bifolding and single doors. See the full range on our timber front doors and French doors pages.
From First Call to Finished Installation
We keep the process straightforward. No pushy sales visits, no vague quotes.
Free Consultation
We discuss your property, the window style, any planning restrictions and your timeline. No obligation, no pushy follow-up. Get in touch to arrange yours.
Precise Measurement
Our team visits to take exact measurements of every opening. This is included at no cost with every order. You can also review our technical drawings in advance to understand the specifications.
Manufacture
Your windows are built in our workshop to the agreed specification — timber species, finish, glazing unit and furniture all confirmed before production starts. Download our product brochures for a full overview of available options.
Professional Installation
Our own installation teams handle removal of old frames and fitting of new windows. We make good around every opening and leave the site clean. See completed work in our full portfolio. Our compliance standards are available on the certificates page.
London Areas We Cover
We install timber windows across all London boroughs. Areas we work in most regularly include North London (Hampstead, Highgate, Islington, Camden, Archway), West London (Ealing, Acton, Chiswick, Bedford Park), North West London (Wembley, Harrow, Brent) and Central London (Kensington, Chelsea, Westminster).
We’ve put together area-specific guides for the boroughs where we work most frequently: sash windows in North London, sash windows in Wembley and wooden windows in Ealing. Outside these areas? Contact us — we cover the full Greater London area.
Glazing Options & Energy Performance
All our timber windows support modern double glazing as standard. For properties near busy roads or railways, we can specify acoustic glazing units — read our detailed guide to acoustic glazing in London.
If you’re weighing up double versus triple glazing, we’ve put together an honest comparison: Double vs Triple Glazing in London — Which Actually Makes Sense?
We also supply uPVC sash windows for clients where that’s the right fit — but for most London period properties, timber remains the better long-term investment and the only option permitted in many conservation areas.
Pricing — What to Expect
Timber windows are a bespoke product, so there’s no single price list. Cost depends on window size, style, glazing specification and the complexity of the opening. For a general guide to what sash windows cost in London, see our 2026 cost guide or use the sash windows cost calculator for a quick estimate. For North London pricing specifically, see our North London cost breakdown.
Before you commit to anything, our bespoke timber windows buying guide covers everything worth knowing — what to ask suppliers, what to watch out for and how to compare quotes properly.
Frequently Asked Questions
Can you replace windows in a conservation area?
Yes — but the replacement windows need to match the character of the originals in profile, material and finish. We produce conservation-grade windows that satisfy planning requirements and can provide supporting documentation. More detail on our conservation windows page.
Do you supply and install, or just supply?
We handle the full process — consultation, measurement, manufacture and installation. You deal with one company throughout, which means accountability is clear from start to finish.
How long does the process take?
It depends on the scope of work. For a standard order we’ll give you a clear timeline at the consultation stage. We’re transparent about lead times before anything is committed. Read more in our buying guide.
Do you work on listed buildings?
Yes. We have experience producing windows for listed properties and can advise on the specification required to satisfy your local planning authority. Contact us to discuss your project.
Get in Touch
Call us on +44 20 3375 5535 or visit our contact page to arrange a free consultation. We’ll come to you, measure up and give you a clear quote — no obligation. You can also download our technical documentation or browse the brochures before we speak.