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Decking Frame

Decking Frame

Introduction Advice &Information

We understand how important a good, solid frame is to begin any garden decking project. At Cladco, we offer a selection of decking joists and posts designed to provide your boards with the support they need.

Enjoy a 15-year warranty on your composite decking when installed using our recycled plastic joists.

In addition to our sawn green treated timber posts and C24 sawn green-treated timber joists, we stock a range of structural composite decking joists to ensure a strong foundation for your installation.

Alternatively, choose from our long-lasting recycled plastic joists and posts, made from 100% recycled materials. These joists provide a durable support system suitable for both ground-level and raised decking.

Begin your project with confidence by using concrete decking blocks These sturdy concrete bases offer stable support for your joists or posts, creating a non-perishable foundation that will help your decking last for years to come.

For more information on joist, post, and batten subframe construction, please refer to our decking installation guides.

Sawn Green Treated Timber Post 100mm x 100mm x 3000mm

Sawn Green Treated Timber Post 100mm x 100mm x 3000mm

£19.20 inc VAT

National delivery - August 13

Great Deck Framing at an Affordable Cost

At Cladco, we believe every successful project starts with a strong foundation. The importance of good deck framing cannot be overstated—proper placement and installation of your decking boards depend heavily on how well the base is constructed. For this reason, using quality timber and composite materials is vital to ensure the stability and longevity of your decking.

All our timber framing is responsibly sourced and pressure treated to provide year-round water resistance and durability. We also offer heavy-duty composite structural joists made from recycled plastics, ideal for elevated decking areas.

Our deck framing products are suitable for installation on both solid concrete bases and grassed areas. For guidance on using our decking framing effectively, please consult our handy installation guides.

Whether you choose natural timber decking or hard-wearing composite decking, we provide the right products to ensure your deck’s foundations are strong and reliable. As with all our products, our deck framing materials can be easily sawn, planed, and drilled to help you shape your project exactly as required.

Decking Joists – Composite or Timber?

When planning your decking area, it’s important to use the right base to support your decking joists. Our composite decking joists are best suited for hard, concrete bases - such as our concrete decking block, to ensure your decking is secure and level. For installations on grass without a concrete base, our timber decking joists are the ideal choice. We recommend removing turf first to create as flat a surface as possible.

Our deck framing range offers the right products at competitive prices to get your decking project off to a great start. Whether you choose composite wood or timber, we provide quality materials designed to give you peace of mind. Alongside our timber framing, we also stock trims and fixings to complete your installation.

For inspiration, browse our gallery showcasing completed projects by customers who have successfully used our products. If you require further advice or more information about our decking frames, please don’t hesitate to contact us.

*Please note: images are for illustration purposes only. The actual product may vary slightly from those shown.

Cladco Recycled Plastic Posts and Joists

When building your decking frame or substructure, it’s essential to use durable, high-quality materials that can withstand significant weight and moisture.

Cladco plastic joists are manufactured in the UK from 100% reclaimed post-consumer plastic. These plastics are moulded into strong, reliable joists designed for superior performance.

Our recycled plastic joists and posts are highly versatile and ideal for direct ground installation, particularly in moisture-prone areas. Being moisture-resistant, these maintenance-free joists will not rot, warp, or splinter, and come with a 20-year warranty for peace of mind.

These joists are suitable for use with our Signature, ProDeck, Nordeck and timber decking ranges.

Find out more about our range of decking products and how to install them in our installation guides.

Product Reviews

4m Composite Joists/Batten

4m Composite Joists/Batten

Recommended

Turnip Head 1

Verified Buyer

Made area nice and flat to work on 23/02/2024

Price

Quality

Value

Used these as they went directly onto eco grids, far better than wooden joists, as these will not rot. A good investment.

Concrete Decking Block Shims

Concrete Decking Block Shims

Recommended

Stuart

Verified Buyer

Got the job done nicely. 29/04/2025

Price

Quality

Value

Solid, quality product, would recommend.

Weed Mat & Pins Bundle

Weed Mat & Pins Bundle

Recommended

Jo

Verified Buyer

Got rid of the weeds in my garden 20/12/2024

Price

Quality

Value

I overlapped some sections, as suggested, and covered it with wood chippings. My garden has never looked so tidy!

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