Timber Grades Explained: C16 vs C24 & When

Decking Frame Timber – In Stock for Fast Delivery

Building a strong, stable deck starts with the right frame. At Kelvin Timber, we supply high-quality, pressure-treated timber perfect for decking frames, substructures, and joists. Whether you’re a seasoned tradesperson or planning your first DIY deck, we have everything you need – including local delivery across Glasgow and expert guidance.

“For most residential decks, 6×2” timber is recommended to support the joist layout. Learn more about framing a decking substructure here.”

Why Choose Our Timber for Decking Frames?

Pressure-treated for long life
Ideal for decking substructures and joist layouts
Available in common sizes for decking projects
Trusted by local tradesmen and landscapers
Delivery available across Glasgow, Hamilton & Central Scotland

Shop Our 4.8m Timber Frame Material Below 100mm, 125mm or 150mm:

We stock popular sizes for decking frames, including 4×2″, 6×2″, and joists suitable for raised and ground-level builds.

Sale!
Rated 0 out of 5
Green Treated Timber Joist 4.8m x 47mm x 150mm
Original price was: £17.10.Current price is: £15.70. Add to basket
Sale!
Rated 0 out of 5
Green Treated Timber Joist 4.8m x 47mm x 125mm
Original price was: £15.52.Current price is: £13.02. Add to basket
Sale!
Rated 0 out of 5
Green Treated Timber Joist 4.8m x 47mm x 100mm
Original price was: £12.71.Current price is: £10.43. Add to basket

Decking Calculator

Need a little help to get right materials?

Use our free Decking Calculator to quickly work out how many boards and joist needed to make your subframe for your timber deck. It’s designed for UK gardens and gives trade-accurate results.

Calculate My Deck Contact Us

Shop All Timber Decking?

We have all the materials required to build a deck and all the support if you want to know how to build a deck. From the sub frame to laying the deck boards our supportive team can help. Get In Touch Today – Book an appointment and our friendly team can help.