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Treated Timber
Treated timber suits projects designed to stay solid through everyday use and tough conditions. It is trusted by builders who prefer to get it right the first time.
It looks like ordinary carcassing timber at first glance, but it behaves differently on site. It feels more dependable. Strong enough for structure. Protected enough for exposure. That is why treated timber shows up everywhere from garden builds to serious framing work.
If you search for treated timber near me, treated timber is the one you will likely find first. Practical sizes. Reliable grades. Timber that works as hard as the build itself.
What is treated timber?
Treated timber is wood that has been built to last longer than untreated timber. It starts as standard softwood timber. Pressure treatment is applied to protect it from moisture, rot and insects.
The treatment is pushed deep into the wood. Not just applied on the surface. That is why treated wood timber copes better with damp conditions and outdoor use. It stays stable.
This type of timber is supplied in recognised strength grades. C16 timber is used for everyday structural work. C24 timber is chosen when extra strength is needed. Both are available as pressure treated timber for longer service life.
What is treated wood used for?
Treated timber is commonly supplied in a full range of standard construction sizes to suit different structural and outdoor uses. It is available in 2×2, 3×2, 4×2, 5×2, 6×2, 7×2, 8×2 and 9×2 sections, with a consistent 47mm width and thicknesses of 50mm, 75mm, 100mm, 125mm, 150mm, 175mm, 200mm and 225mm. Standard lengths of 2400mm, 3000mm and 3600mm.
Treated timber is used anywhere the structure needs to stay solid in damp conditions and changing weather. It is a practical choice for both garden builds and structural work, where untreated wood would not last.
Garden and exterior builds
Most exterior timber projects rely on pressure treated timber for the parts that carry weight or stay close to the ground. Decking frames, pergola posts and fencing all depend on treated wood timber to resist moisture over time.
Fence posts, rails and supports are typically made from treated carcassing timber. Fencing styles vary, but the structure stays familiar. The panels change. The timber behind them usually does not.
Most raised decking frames use C16 timber. For heavier builds or wider spans, C24 treated timber is the stronger option. Both are suitable for outdoor use once treated.
Structural and framing work
Carcassing timber is widely used for frames, joists and internal structure where durability matters. C16 grade timber suits most standard structural tasks. C24 grade timber is used where extra strength and stiffness are required.
Everyday practical use
Garden sheds, greenhouse bases, and outdoor storage structures often rely on treated wood timber at ground level. Sleepers, edging and raised beds also use treated timber to cope with constant contact with damp soil.
If you are searching for treated timber near me, this is the type of material builders expect. Practical sizes. Recognised strength grades. Timber that performs reliably in real conditions.
Benefits of treated timber
- Made to handle outdoor conditions, including moisture, temperature changes and long exposure to the elements.
- Pressure treated so protection goes into the timber itself, not just onto the surface.
- Resists rot, insects and everyday wear over time.
- Supplied in recognised strength grades, including C16 and C24, for different structural requirements.
- Suitable for both standard construction and heavier structural builds.
- Stays more stable in damp conditions compared to untreated timber.
- Works across fencing, decking frames, pergolas, sheds and structural carcassing.
- Available in practical construction sizes commonly used for exterior framing and support work.
Why choose our pressure treated timber
At Sheet Materials Wholesale, pressure treated timber is selected with real projects in mind. This is timber that builders trust on site and DIY customers feel confident using at home.
If you are ordering in volume or looking at pallet quantities, the price reflects that. It is the kind of pricing that makes sense for ongoing projects, not just one-off jobs.
All pressure treated timber is supplied from UK stock, so there is no long waiting time or uncertainty. Orders are prepared quickly, and next-day delivery is available on many lines. We deliver nationwide, with kerbside delivery to the site or home, depending on what works best for your build.
Whether you are buying for trade or DIY, the process stays simple. A VAT invoice is provided with every order, and order tracking keeps everything clear from checkout to delivery. If you need a price confirmed quickly, quotes are offered in minutes, not days.
We supply pressure treated timber across the UK, using project-ready stock that fits standard construction sizes and grading. C16 and C24 options are available for different structural needs, without confusion or overcomplication. This is not just timber on a shelf. It is pressure treated timber chosen, priced and supplied to work properly on real jobs.
Your materials are ready when you are. Choose what you need and place the order without extra steps. Bulk pricing is available for larger builds.
At Sheet Materials Wholesale, you can purchase Treated Timber at low wholesale prices with fast nationwide delivery for most of items within 1-3 working days across the UK. Next-day delivery is also available on most orders. Competitive rates guaranteed.
FAQ
Where to buy treated timber?
You can order treated timber online from Sheet Materials Wholesale. Choose the size and grade, place the order and delivery is arranged straight to the site or home.
What is green treated timber?
It is treated timber with a green tint from the preservative. The colour simply shows the timber has been pressure treated. It fades over time.
How long does treated timber last?
Used properly, it lasts many years. Outdoors, it performs far better than untreated timber, especially in damp conditions.
Can treated timber be painted?
Yes, but let it dry first. Once dry, you can paint it with an exterior paint suitable for treated wood.
Can treated timber be stained?
Yes. Allow the timber to dry, then apply a stain designed for exterior and treated wood.
Treated Timber Range
Showing all 16
Products in Treated Timber
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Buy in Bulk & Save
132-263 264+ £2.50£3.00 £2.45£2.94 
47 x 50mm Treated Carcassing Timber (2” x 2”) 2400mm
Our C16 graded 2×2 timber that stays straight and strong, it is kiln dried and minimises movement. The pressure treatment resists rot and pests. It comes from a slow-grown softwood, which means a smoother finish, excellent stability and robust load performance.
£2.58£3.10 Ex VATInc VAT£1.08£1.30 Per M Add to cart -
Buy in Bulk & Save
132-263 264+ £2.97£3.56 £2.91£3.49 47 x 50mm Treated Carcassing Timber (2” x 2”) 3000mm
Our C16 graded 2×2 timber that stays straight and strong, it is kiln dried and minimises movement. The pressure treatment resists rot and pests. It comes from a slow-grown softwood, which means a smoother finish, excellent stability and robust load performance.
£3.06£3.67 Ex VATInc VAT£1.02£1.22 Per M Add to cart -
Buy in Bulk & Save
132-263 264+ £3.77£4.52 £3.70£4.44 47 x 50mm Treated Carcassing Timber (2” x 2”) 3600mm
Our C16 graded 2×2 timber that stays straight and strong, it is kiln dried and minimises movement. The pressure treatment resists rot and pests. It comes from a slow-grown softwood, which means a smoother finish, excellent stability and robust load performance.
£3.89£4.67 Ex VATInc VAT£1.08£1.30 Per M Add to cart -
Buy in Bulk & Save
90-179 180+ £3.58£4.30 £3.51£4.21 
47 x 75mm Treated Carcassing Timber (3” x 2”) 2400mm
Our C16 graded 3×2 timber that stays straight and strong, it is kiln dried and minimises movement. The pressure treatment resists rot and pests. It comes from a slow-grown softwood, which means a smoother finish, excellent stability and robust load performance.
£3.69£4.43 Ex VATInc VAT£1.54£1.85 Per M Add to cart -
Buy in Bulk & Save
90-179 180+ £4.37£5.24 £4.28£5.14 47 x 75mm Treated Carcassing Timber (3” x 2”) 3000mm
Our C16 graded 3×2 timber that stays straight and strong, it is kiln dried and minimises movement. The pressure treatment resists rot and pests. It comes from a slow-grown softwood, which means a smoother finish, excellent stability and robust load performance.
£4.50£5.40 Ex VATInc VAT£1.50£1.80 Per M Add to cart -
Buy in Bulk & Save
90-179 180+ £5.32£6.38 £5.21£6.25 47 x 75mm Treated Carcassing Timber (3” x 2”) 3600mm
Our C16 graded 3×2 timber that stays straight and strong, it is kiln dried and minimises movement. The pressure treatment resists rot and pests. It comes from a slow-grown softwood, which means a smoother finish, excellent stability and robust load performance.
£5.48£6.58 Ex VATInc VAT£1.52£1.82 Per M Add to cart -
Buy in Bulk & Save
60-120 121+ £6.90£8.28 £6.75£8.10 
47 x 100mm Treated Carcassing Timber (4” x 2”) 3600mm
Our C24 graded 4×2 timber that stays straight and strong, it is kiln dried and minimises movement. The pressure treatment resists rot and pests. It comes from a slow-grown softwood, which means a smoother finish, excellent stability and robust load performance.
£7.11£8.53 Ex VATInc VAT£1.98£2.38 Per M Add to cart -
Buy in Bulk & Save
66-131 132+ £5.81£6.97 £5.69£6.83 47 x 100mm Treated Carcassing Timber (4” x 2”) 3000mm
Our C24 graded 4×2 timber that stays straight and strong, it is kiln dried and minimises movement. The pressure treatment resists rot and pests. It comes from a slow-grown softwood, which means a smoother finish, excellent stability and robust load performance.
£5.99£7.19 Ex VATInc VAT£2.00£2.40 Per M Add to cart -
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66-131 132+ £4.70£5.64 £4.61£5.53 47 x 100mm Treated Carcassing Timber (4” x 2”) 2400mm
Our C24 graded 4×2 timber that stays straight and strong, it is kiln dried and minimises movement. The pressure treatment resists rot and pests. It comes from a slow-grown softwood, which means a smoother finish, excellent stability and robust load performance.
£4.85£5.82 Ex VATInc VAT£2.02£2.42 Per M Add to cart -
Buy in Bulk & Save
44-87 88+ £7.42£8.90 £7.27£8.72 
47 x 125mm Structural Graded C24 Treated Carcassing Timber (5” x 2”) 3000mm
Our C24 graded 5×2 timber that stays straight and strong, it is kiln dried and minimises movement. The pressure treatment resists rot and pests. It comes from a slow-grown softwood, which means a smoother finish, excellent stability and robust load performance. C24 timber is suitable for structural use.
£7.65£9.18 Ex VATInc VAT£2.55£3.06 Per M Add to cart -
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49-98 99+ £8.97£10.76 £8.79£10.55 47 x 125mm Structural Graded C24 Treated Carcassing Timber (5” x 2”) 3600mm
Our C24 graded 5×2 timber that stays straight and strong, it is kiln dried and minimises movement. The pressure treatment resists rot and pests. It comes from a slow-grown softwood, which means a smoother finish, excellent stability and robust load performance. C24 timber is suitable for structural use.
£9.25£11.10 Ex VATInc VAT£2.57£3.08 Per M Add to cart -
Buy in Bulk & Save
42-83 84+ £8.91£10.69 £8.73£10.48 47 x 150mm Structural Graded C24 Treated Carcassing Timber (6” x 2”) 3000mm
Our C24 graded 6×2 timber that stays straight and strong, it is kiln dried and minimises movement. The pressure treatment resists rot and pests. It comes from a slow-grown softwood, which means a smoother finish, excellent stability and robust load performance. C24 timber is suitable for structural use.
£9.19£11.03 Ex VATInc VAT£3.06£3.67 Per M Add to cart -
Buy in Bulk & Save
42-83 84+ £10.66£12.79 £10.44£12.53 47 x 150mm Structural Graded C24 Treated Carcassing Timber (6” x 2”) 3600mm
Our C24 graded 6×2 timber that stays straight and strong, it is kiln dried and minimises movement. The pressure treatment resists rot and pests. It comes from a slow-grown softwood, which means a smoother finish, excellent stability and robust load performance. C24 timber is suitable for structural use.
£10.99£13.19 Ex VATInc VAT£3.05£3.66 Per M Add to cart -
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36-71 72+ £12.24£14.69 £11.99£14.39 47 x 175mm Structural Graded C24 Treated Carcassing Timber (7” x 2”) 3600mm
Our C24 graded 7×2 timber that stays straight and strong, it is kiln dried and minimises movement. The pressure treatment resists rot and pests. It comes from a slow-grown softwood, which means a smoother finish, excellent stability and robust load performance. C24 timber is suitable for structural use.
£12.62£15.14 Ex VATInc VAT£3.51£4.21 Per M Add to cart -
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30-59 60+ £14.83£17.80 £14.53£17.44 47 x 200mm Structural Graded C24 Treated Carcassing Timber (8” x 2”) 3600mm
Our C24 graded 8×2 timber that stays straight and strong, it is kiln dried and minimises movement. The pressure treatment resists rot and pests. It comes from a slow-grown softwood, which means a smoother finish, excellent stability and robust load performance. C24 timber is suitable for structural use.
£15.29£18.35 Ex VATInc VAT£4.25£5.10 Per M Add to cart -
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60-119 120+ £16.34£19.61 £16.01£19.21 47 x 225mm Structural Graded C24 Treated Carcassing Timber (9” x 2”) 3600mm
Our C24 graded 9×2 timber that stays straight and strong, it is kiln dried and minimises movement. The pressure treatment resists rot and pests. It comes from a slow-grown softwood, which means a smoother finish, excellent stability and robust load performance. C24 timber is suitable for structural use.
£16.85£20.22 Ex VATInc VAT£4.68£5.62 Per M Add to cart
