Planning a timber window or door project?
Avoid costly mistakes, protect your investment, and get it right first time - with guidance from trusted timber specialists.
Choosing bespoke timber windows and doors is a significant investment - especially for period, listed or high-end homes. The right decisions will enhance your property’s beauty, performance and longevity. The wrong ones can lead to unnecessary repairs, delays and disappointment.
At GBS Joinery, we’ve spent over 40 years crafting and installing bespoke timber windows and doors joinery with care, precision, and integrity. This free guide (link for direct download below) shares the most common mistakes we see - and how to avoid them.
Review some of our Customer Testimonials HERE


✅ The 5 biggest mistakes homeowners make when specifying timber windows and doors
✅ What to ask your joiner before committing
✅ How to ensure long-term durability and performance
✅ Key design, installation and aftercare considerations
✅ A practical specification checklist you can use when requesting quotes
✔ Homeowners planning renovations or replacements
✔ Period, heritage or listed property owners
✔ Architects, developers and specifiers
✔ Anyone who wants timber done properly - not cheaply
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GBS Joinery is a North West–based specialist manufacturer of bespoke timber windows and doors, with over 40 years of experience serving homeowners across Greater Manchester, Cheshire, and the wider UK. The company designs, manufactures, and installs high-quality timber windows and doors for period properties, conservation areas, listed buildings, and contemporary homes. GBS Joinery is known for its craftsmanship-led approach, sustainable timber sourcing, energy-efficient glazing, and in-house installation across the North West, with nationwide manufacture and delivery available.
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