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The timber we use

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Our playground timber

We use only premium, pressure‑treated timber — carefully selected and sustainably sourced — for all our outdoor play equipment. Our timber is built to last: resistant to rot, decay and insect damage, and treated to withstand the elements across many years. From commercial playgrounds to garden climbing frames, this commitment to quality timber ensures strength, safety and long‑lasting durability for every project.

The timber we use

Our climbing frames are crafted from Southern Yellow Pine, sustainably grown in the sun-soaked forests of Louisiana. Thanks to its unique cellular structure, this timber is naturally strong, durable and perfect for outdoor play.  Its lower density and high permeability mean the protective treatment reaches right to the core with 100% of the timber being fully treated. Southern Yellow Pine also allows moisture to move in and out more freely, helping prevent the damp, dark conditions where mould and rot like to hide — keeping your climbing frame safer, stronger and adventure-ready.



Our industry leading treatment

How wood cellular structure determines treatment absorption (with micronised copper)

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Southern Yellow Pine

  • 1. Liquid Superhighways - Naturally engineered for absorption, SYP’s large resin canals act as "superhighways" for preservatives. Thin-walled epithelial cells allow the treatment to bleed outward easily, fully saturating the tissue.
  • 2. Open microscopic valves - SYP’s rigid torus resists aspiration, keeping valves open so treatments flow effortlessly to the core.
  • 3. Horizontal connectivity - SYP’s uniquely jagged ray tracheids create irregular connection points, ensuring high permeability and superior horizontal flow.

Baltic Spruce

  • 1. Resin canals - In contrast, Baltic Spruce has sparse, microscopic canals encased in thick-walled cells. These act as barriers, trapping fluids and blocking lateral spread.
  • 2. Closed valves - In Baltic Spruce, the torus locks against the pit during drying, a process called aspiration. This "shuts the door" and blocks preservative flow.
  • 3. Horizontal connectivity - Unlike SYP, Baltic Spruce uses narrow slit connections as a shield to resist and block deep treatment.

Benefits of our treatment

Our treatment uses micronised copper to suspend copper in the timber for a passive protection system. Whilst a micronised copper (MCA) treatment is the most effective wood preserving treatment, it is more challenging to ensure complete retention and penetration, combining this with Southern Yellow Pine, a highly treatable timber. We can provide an industry-leading solution, providing long - lasting protection against rot and decay.

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  • 1. Dormant state - The micronised copper particles sit quietly as solid minerals. They aren’t leaching away and they away for the attack.
  • 2. The attack - When fungus tries to eat the wood, it secretes organic acids to break down the wood fibres.
  • 3. The chemical reaction - The fungal acid lowers the pH of the wood; the acidity dissolves the surface of the micronised copper, converting it into active copper ions.
  • 4. The kill - The azole which is already molecularly distributed in the wood, prevents the fungus from defending itself, the azoles, organic fungicides, weaken the fungal cell membrane, allowing the copper to eliminate the fungus.

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Natural beauty

A distinct characteristic of this pine is the colour - a beautiful rich yellow to begin with which you see on the right of the climbing frame.  As the seasons pass, you’ll begin to notice a subtle silvering as the wood patinas and ages.  Over time, you may notice shakes in the timber, this is perfectly natural and adds to the beauty of the timber (we've got more information about shakes and checks on our blog).

In this image you can also see the modularity of our climbing frames, it really is that simple to add to it at a later date.   We installed this Jungle Twin Clubhouse in Upavon, Wiltshire, you can read more about it on our portfolio.

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We don't use steel feet, and here's why...

We’ve used Southern Yellow Pine for many years, and have never used steel feet on any of our installations (we’ve been installing since 1996).  Our timber is pressure treated to UC4B standard, meaning the treatment is intended for below ground contact and freshwater in specifically critical components. 

This is Little Broad Chalke, part of a bigger play area in Broad Chalke, Wiltshire. You can find out about this project here.

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