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. Ready to go.
Why GSD
Spec it once. Trust it every time.
We stock products that do what they say. Trade-tested, competitively priced, and in stock when you need them.
Browse all products-
Fully waterproof
Tested to BS EN standards — handles everything from bathroom seals to roof repairs.
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Temperature resistant
Remains flexible from -40°C to +150°C so it won't crack in UK winters or summer heat.
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Easy application
Professional-grade but DIY-friendly — fits any standard caulking gun.
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25-year lifespan
Engineered to outlast the job. No cracking, shrinking, or discolouring.
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Fast cure
Skin-forms in 10 minutes, fully cured in 24 hours — keeps the job moving.
Trusted brands we stock
- Soudal
- Dow Corning
- Arbokol
- Illbruck
- Tremco
Which One Is Right for You?
Not sure whether to go silicone or hybrid? Here's 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 in-stock items. Order before 3pm Monday–Friday to qualify.
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.