Williams Windows & Doors – The Trusted Trade Supplier in Glasgow

If you’re a builder, installer, or developer in Glasgow, finding a supplier who delivers on time, at the right price, is critical. That’s why Williams Windows is the trusted partner for trade customers across the West of Scotland.

For nearly 30 years, Williams Windows & Doors has been the go-to trade supplier for windows, doors and garden rooms across Glasgow and the West of Scotland. From our factory in Clydebank, we’ve built a reputation among builders, joiners, property developers and installers for being local, reliable and competitively priced.

When you choose us, you’re not just buying windows – you’re partnering with a team that understands the needs of trade professionals.

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Why Trade Customers Choose Williams Windows

✔ Fast Lead Times – uPVC in just 1 week, aluminium in only 3 weeks
✔ Direct-to-Site Delivery – save time and cut hassle with our efficient logistics
✔ Competitive Trade Prices – the best trade rates in Glasgow on windows, doors and garden rooms
✔ Quality That Exceeds Standards – U-values that surpass building regulations (our windows are 1.2 U-Value)
✔ Smart Technology Options – Smart Locks and modern upgrades available across the range
✔ Local Manufacturing – all products made in Clydebank since 1996
✔ Marketing Support – help to promote your business and win more work

First-time trade order? Get priority turnaround.

We want to be your choice for trade window supplier in Glasgow.

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Our Trade Product Range

• uPVC Windows & Doors – casement, sliding sash, tilt & turn and bay windows, plus composite, French, sliding patio and bi-folding doors.

• Aluminium Windows & Doors – slim sightlines, modern looks, and superior strength. We sell 2 different systems Aluna and Visofold. Speak to us about your specific requirements and we can advise which system suits your customer’s needs best.

• Sliding Sash and Case – Now with a Deep Bottom Rail and every customisable option you can imagine, you can deliver exactly what your customer has specified.
• Composite Doors – with three ranges at different price points to choose from (including the premium Stronghold range) to meet your customer’s budget, we can supply exactly what they are looking for at the right price.

• Brochures can be downloaded from the main menu of our website.

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What Our Trade Customers Say

💬 “I have used Williams Windows numerous times over the years, the service and quality is outstanding and I would thoroughly recommend. Great local company.” – Danny Docherty

💬 “Williams Windows have a great product and prices. I’ve been dealing with them for 10 years+ and their staff are very helpful.” – Thomas Scullion

We’re proud to be rated 4.8 on Google Reviews (as of August 2025).

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How Do I Order?

Sketch your requirements on our Trade Order Form and email to info@williamswindows.co.uk or drop it in to the factory. We can then price your job for you.

Do I need to pay a Deposit?

We require a 35% deposit on your first order, and thereafter no deposit is required.

Partner With Us – Local. Fast. Reliable.

At Williams Windows & Doors, we believe local links lead to lasting success. By partnering with us, you’ll benefit from a supplier that’s close to site, understands the pressures of trade, and delivers on time – every time.

📞 Call us today on 0141 941 3050 or email info@williamswindows.co.uk to set up your trade account.