UK Trade & DIY Supplies
For the Trade. For DIY. For You.
Everything from full builds to the garden tap.
Always in stock
Trade Essentials
The fast-movers. In stock, ready to go.
Top Seller24mm Glazing Packers
Colour-coded 1–6mm shims. Made in the UK.
From £6.29
28mm Glazing Packers
The standard width for double glazing.
From £7.30
15mm Bridge Packers
Load-bearing. Keeps drainage clear.
From £7.88
Drain Hole Covers
uPVC weep caps. Eight colours.
From £5.24
Bulk Buy28mm Mixed Packers
Box of 1,000 — every thickness 1–6mm.
£27.83
Why GSD
Trade supplies, without the trade counter.
Own-brand glazing consumables made in the UK, alongside the workwear brands your site already specifies.
Browse all products-
Made in the UK
Our glazing packers, bridge packers and weep caps are manufactured here and made from recyclable material.
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Colour-coded by thickness
1mm green, 2mm black, 3mm white, 4mm grey, 5mm blue, 6mm red — pick the right shim on site without measuring.
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Brands you already specify
Portwest, Snickers, Blaklader, Helly Hansen and Carhartt workwear, stocked in depth.
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Bulk packs or singles
Packers from 60 up to 10,000 mixed. Buy a bag for the van or a pallet for the contract.
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Trade prices for everyone
No account, no login, no minimum order. The price you see is the trade price.
Brands we stock
- Portwest
- Snickers
- Blaklader
- Helly Hansen
- Carhartt
Flat Packers or Bridge Packers?
Both go into the same window — they just do different jobs. Here is the quick answer.
Frequently Asked Questions
Still got questions? Get in touch
Do you offer free delivery?
Yes — free UK delivery on all orders over £50. Standard delivery is available on smaller orders for a flat fee.
Can I get next-day delivery?
Next day delivery is available on many core items — order before 3pm Monday to Friday. Some brands ship direct from the manufacturer and take 5–8 working days; the expected window is shown on every product page.
What is your returns policy?
We accept returns within 30 days of purchase on unused, unopened items. Contact us to arrange a return.
Do I need a trade account to buy?
No — all customers see trade pricing. No account or login required to purchase.