Deck Framing Timber & Supports

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2.4m x 50 x 47mm C24 Graded Timber

£3.07 Inc VAT

2.4m x 50 x 47mm C24 Graded Timber quantity
3.6m x 100 x 47mm C24 Graded Timber

£8.96 Inc VAT

3.6m x 100 x 47mm C24 Graded Timber quantity
2.4m x 75 x 47mm C24 Graded Timber

£4.49 Inc VAT

2.4m x 75 x 47mm C24 Graded Timber quantity
3.6m x 150 x 47mm C24 Graded Timber

£13.45 Inc VAT

3.6m x 150 x 47mm C24 Graded Timber quantity
4.8m x 100 x 47mm C24 Graded Timber

£11.96 Inc VAT

4.8m x 100 x 47mm C24 Graded Timber quantity
4.8m x 150 x 47mm C24 Graded Timber

£17.93 Inc VAT

4.8m x 150 x 47mm C24 Graded Timber quantity
600mm Concrete Decking Support Post

£15.77 Inc VAT

600mm Concrete Decking Support Post quantity
4.8m x 200 x 47mm C24 Graded Timber

£23.90 Inc VAT

4.8m x 200 x 47mm C24 Graded Timber quantity
HD Protect Tape – Joist & Flashing Tape

From £30.24 Inc VAT

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450mm Concrete Decking Support Post

£12.41 Inc VAT

450mm Concrete Decking Support Post quantity
3.6m x 200 x 47mm C24 Graded Timber

£17.93 Inc VAT

3.6m x 200 x 47mm C24 Graded Timber quantity

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Deck Framing Timber and Supports

Build the supporting structure for your garden decking with deck framing supplies from Clarke Fencing. Our range includes C24 graded timber, concrete decking support posts and joist protection tape for new decking installations and subframe repairs.

A well-planned frame provides support beneath the decking boards and establishes the finished layout. Choose timber sections, supports and fixings around the deck dimensions, expected loads and installation requirements of your chosen boards.

C24 Timber for Decking Subframes

Our C24 timber range includes different sections and lengths for framing applications. Selecting the correct size depends on the distance between supports, joist spacing and the role of each component within the structure.

Strength grading and preservative treatment serve different purposes. Check both when specifying timber for outdoor structural use, rather than choosing solely by its dimensions.

Concrete Supports and Joist Protection

Concrete decking support posts provide support points within suitable deck designs. HD Protect joist and flashing tape adds a protective barrier over timber surfaces where moisture can collect around board contact points and fixings.

Deck Framing FAQs

What does C24 mean?

C24 is a structural strength class for timber. It does not, by itself, confirm the timber’s preservative treatment or suitability for a particular exposure.

What size timber do I need for decking joists?

The required section depends on the unsupported span, joist spacing and loads. Use a suitable deck design and the board manufacturer’s installation requirements to select the framing.

Can the same frame support timber and composite decking?

Potentially, but the support spacing and fixing requirements can differ. Check the chosen decking system before building or reusing a frame.

Does joist tape replace timber treatment?

No. Joist tape provides additional protection at vulnerable surfaces. The timber still needs suitable treatment, drainage and ventilation.