Plastic Decking Sub-Frame FAQs
Recycled plastic joists are a durable, long-lasting alternative to traditional timber joists. They are made from 100% recycled plastic, engineered to provide a strong and stable support structure for projects like decking, sheds, and garden rooms. They will not rot, split, or crack.
The primary benefit is longevity. Unlike timber, recycled plastic joists are completely waterproof and resistant to rot, damp, fungi, and insect attacks. This means they will not degrade over time, providing a 'fit and forget' foundation that will outlast any timber equivalent.
Yes, absolutely. They are engineered to be incredibly strong and rigid, providing a robust and stable base for decking and other outdoor structures. We use them to ensure the foundation of your project is as long-lasting as the high-quality decking we install on top.
Recycled plastic joists are designed to last for decades. Because they are immune to the elements that cause timber to fail, they have a life expectancy of 50 years or more, ensuring your investment is protected for a lifetime.
Our joists are made from 100% recycled plastic materials that would otherwise end up in landfill. By choosing them, you are supporting a circular economy, reducing plastic waste, and preventing the need to harvest new timber.
Yes. The plastic is chemically inert, meaning it will not leach any harmful chemicals or toxins into the surrounding soil or environment. It is a safe and stable material for use in any garden setting.
Yes. At the end of their very long life, our recycled plastic joists can be recycled again, contributing to a closed-loop system and further reducing environmental impact.
Definitely. Their strength and durability make them an ideal subframe for a wide range of applications, including garden rooms, sheds, raised planters, walkways, and any outdoor structure that requires a solid, rot-proof base.
Yes, one of their biggest advantages is that they can be laid directly onto the ground, gravel, or grass without any risk of rotting or water damage. This makes installation quicker and simpler compared to timber, which requires raising off the ground.
They can be cut, drilled, and screwed into using standard woodworking tools, just like timber. This makes them easy for our professional teams to work with during installation.
Like most building materials, plastic joists will experience some thermal expansion and contraction with temperature changes. Our expert installation team understands this and ensures the correct spacing is used during construction to allow for this natural movement.
Recycled plastic joists are solid and dense, making them heavier than a comparable piece of softwood timber. This density contributes to their strength and durability.
None. Once installed, they require zero maintenance. You will never need to treat, paint, or seal them. They provide a completely maintenance-free foundation for your project.
Yes. Plastic is completely unappealing to wood-boring insects, termites, and rodents. Your subframe will remain structurally sound and free from pest damage.
They are the perfect solution for the UK climate. They are 100% waterproof and will not absorb moisture, swell, or warp, even in constant contact with damp ground or in areas with poor drainage.
The initial material cost for recycled plastic joists can be higher than for standard treated timber. However, they represent far better value over the long term. Because they never need replacing or maintaining, the total lifetime cost is significantly lower than wood.
We are committed to building high-quality, long-lasting outdoor spaces for our clients. Using a rot-proof plastic subframe ensures the foundation of your project is as durable as the premium decking and materials we use on top, guaranteeing a structure that stands the test of time.
Yes, our recycled plastic joists provide a suitable and stable subframe for all types of decking, including composite, PVC, and traditional timber boards.
The material itself comes with a manufacturer's warranty, reflecting its exceptional lifespan. At OMG, we guarantee our workmanship, and using superior materials like plastic joists allows us to deliver a final project that we can stand behind with confidence.
Simply contact the Outdoor Makeover Group. Our team will discuss your project, explain the benefits of using a plastic subframe, and provide a detailed, no-obligation quote for a superior, long-lasting installation.
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Expect a seamless experience when you request a quote from Outdoor Makeover Group. Whether you’re planning to transform your outdoor space, upgrade your driveway, or enhance your home, we’re here to make the process simple and stress-free.
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At OMG, we complete 15 to 25 projects every week, showcasing our dedication to quality and efficiency. From driveways to garden transformations, our experience speaks for itself. With every project, we aim to exceed expectations and deliver results that stand the test of time.
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