Fastwarm™ Solid18 panels are 18mm high-density gypsum-based dry screed boards designed to efficiently transfer heat from underfloor heating pipework to the finished floor surface. These pre-grooved panels are floated over a flat subfloor without the need for adhesive, making them an installer-friendly solution for both new builds and renovations.
Each panel measures 800mm x 600mm x 18mm and is grooved to securely hold 12mm pipework, including channels for main pipe runs, loops, and leaders to and from the manifold. This versatile design supports faster installations and reduces the need for additional components or cuts on site.
- Compatible with 12mm pipework – Grooved to accommodate straight runs, loops, and leaders for efficient pipe layout and connection to the manifold.
- No adhesive required – Panels float over the subfloor, simplifying the installation process and reducing prep time.
- Direct tiling or levelling – Approved by Ultra Tile for use with S2 adhesive and MSP primer for direct tiling, or with a 10mm Ultra Tile 2-part leveller for other finishes like wood, LVT, or carpet.
- High-density gypsum composition – Offers excellent thermal conductivity and structural strength, promoting even heat distribution and fast response times.
- Panel dimensions – Measures 800mm x 600mm x 18mm, providing 0.48m² coverage per board.
Fastwarm™ Solid18 panels offer a robust, time-saving solution that combines efficient heat transfer with installation versatility—ideal for a wide range of floor finishes and underfloor heating layouts.
Delivery Options
2-3 working day delivery
Next working day
Next working day before 10:30
Saturday Delivery
Delivery cut off times
Our daily cut-off time for dispatch is 4:30pm Monday–Thursday and 4:00pm on Fridays. Orders placed before the cut-off time will be dispatched for next working day delivery (if this option is selected). Orders placed after 4:00pm on Friday will be dispatched on Monday for Tuesday delivery.
Bank holidays may affect these delivery times, so please contact our team if unsure on 01268 744479
Other Delivery Options
PRE-10:30AM and Saturday Delivery services are available, but orders must be placed before the relevant cut-off times.
NOTE: All orders placed on a Friday will be delivered on the following Monday (unless its a bank holiday), unless a Saturday Delivery service is selected and paid for before the 4:00pm Friday cut-off.
Delivery outside the UK
Delivery outside mainland UK may be arranged by prior agreement. You will be advised of the delivery charge before dispatch, at which point you can decide whether you wish to proceed with your order.
Important: Our deliveries rely on third party couriers, so, whilst we make every effort to deliver your order on the specified date and time, unfortunately there may be occasions when this will not be possible due to external influences. Due to this we strongly recommend you ensure you have received your order before any tradespeople/builders are scheduled to commence work.
Still Unsure? Talk to an expert
If you need any guidance or further information our highly experienced team are on hand to help.
Get in touch using our contact form or give us a call on 0800 023 4203 or 01268 744 479.
