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The Hidden Cost of Timber Subframe Rot
Most decking failures don't start with the deck boards. They start underneath.
For landscapers, garden designers, architects and contractors, timber subframe rot can mean far more than replacing a few boards.
It can mean:
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Costly callbacks
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Damaged reputation
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Unhappy clients
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Expensive remedial work
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Entire decks needing replacement years before expected
The reality is simple. You can specify the best decking boards in the world, but if the structure underneath fails, the deck fails too.
Look Fine On Top. Rot Underneath.
Many traditional decks appear perfectly sound from above.
The real problem is often hidden beneath the surface.
Timber joists are exposed to moisture, ground contact, poor ventilation and years of weathering. Over time they can warp, deteriorate and eventually rot.
By the time the problem becomes visible, the deck may already require significant remedial work.
For contractors and designers, that often means difficult conversations and avoidable costs.
Meet Grad — The UK's Hidden-Fix Decking System
Grad replaces traditional screw fixing with a clip-in system on aluminium rails, allowing boards to click into place quickly and precisely.
No visible screws. No guesswork. Just clean, consistent installs.
With Grad, you can:
✔ Install decking up to 50% faster
✔ Achieve perfect alignment every time
✔ Deliver a premium, screw-free finish
✔ Remove boards easily if access is needed
✔ Work with timber or composite boards
And importantly, Grad helps reduce the likelihood of deck rot by improving how the deck is built from underneath.
Traditional timber subframes can hold moisture, especially where timber sits against timber or where screws pierce the boards and joists. Over time, this can contribute to movement, splitting and rot.
Grad helps reduce those risks because:
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Aluminium rails won’t rot like timber joists can.
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The clip system creates a 6mm airflow gap between the board and rail, helping ventilation around the decking.
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There is no timber-on-timber contact, reducing areas where moisture can become trapped.
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There are no visible screws piercing the board, helping limit water entry points.
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Grad-profiled boards are designed to help water run off, rather than sit on the surface.
The result is a cleaner, more stable deck structure designed for better long-term performance.
This isn’t just about decking — it’s about better jobs
Grad helps you:
✔ Take on more projects (faster installs)
✔ Win higher-end clients (premium finish)
✔ Reduce time on site (more efficient builds)
✔ Stand out from other landscapers
Start with a 30-Minute Introduction
The easiest way to get started is to join our free online session.
In just 30 minutes, you’ll:
1 See how the system works
2 Understand how it saves time
3 Decide if it’s right for your projects
No pressure. No obligation. At a time that suits you.