Fastwarm® FastDeck Panels provide the following:
- Minimal height increases above joisted / suspended subfloors.
- P5 grade 22mm chipboard manufactured with a 100micron foil covering.
- Pre grooved panel for 16mm Pipe installed at 150mm spacings offering optimal outputs into heated rooms.
- Once Fastwarm® TopDeck or a suitable overboard has been installed, you can proceed to apply your preferred floor finish.
Fastwarm® FastDeck 22mm chipboard is grooved at 150mm centres to accept 16mm pipe and factory fitted with a 100-micron foil covering for even heat distribution suitable for applications over a suspended / joisted floor providing minimal floor build up.
Fastwarm® 16mm Pert al Pert Pipe can be installed directly into the FastDeck chipboard for the professional finish.
Each FastDeck board is 1225x600x22mm (0.735m2 in coverage)
Example 10m2 / 0.735m2 + 10% wastage = 15 panels
Onsite storage
NOTE: If it is necessary to store the system once you have taken delivery, ensure it is kept in the following conditions:
- A dry, weather tight area
- Out of direct sunlight
- Away from sharp objects or chemical spillages
- All chipboard, wood board or plywood must be stacked horizontally and raised off the ground
- It must not be exposed to moisture or high humidity
Please note; The Fastwarm® FastDeck 22mm grooved chipboard flooring must be covered with either Fastwarm® TopDeck or a minimum of 6mm flooring-grade plywood. This is essential to ensure a structurally sound, level substrate suitable for various floor finishes, including floating engineered or laminate flooring, LVT (vinyl and linoleum), low-tog carpets, and tiles.
- Prepare the Joists
- Ensure all joists are structurally sound, level, evenly spaced, and free from debris such as knots and nails. This will help eliminate surface deviations and provide a stable base.
- Check Access
- Determine if access is available from below. If not, install access panels to facilitate running pipes to the manifold locations. Refer to the manual for guidance.
- Lay the First FastDeck Panel
- Start by positioning the first FastDeck panel in a corner of the room. Maintain a minimum 10mm gap between the panel edges and the walls. Ensure the two grooved edges of the panel are placed in the corner, and the opposite end rests on the centerline of a joist. Continue laying the panels in a straight run, ensuring the end of each panel aligns with the centerline of a joist. Use the off-cut from each run to begin the next.
- Secure the Panels
- Apply wood adhesive to both the tongue and groove sections of the panels. Ensure the panels are fully driven together and securely fixed to the joists.
- Prepare for Pipe Installation
- Before laying the underfloor heating pipework, clean any debris from the channels. If a pipe layout diagram is provided, refer to it and begin placing the pipework into the designated channels of the FastDeck panels.
- Install TopDeck or Overboarding
- Lay Fastwarm TopDeck or a suitable overboarding material over the FastDeck panels. Secure the boards with appropriate fixings, ensuring you avoid damaging the pipework beneath.
- Apply Floor Finishes
- Once the installation is complete, apply your chosen floor finishes. Ensure all steps are complete and the surface is ready for finishing.

Fastwarm® FastDeck is a high-quality 22mm P5 chipboard designed specifically for underfloor heating systems. The board is covered with a durable 100-micron aluminum foil and features precision grooves to accommodate 16mm heating pipes spaced at 150mm centers.
Material and Construction | |
Base Material | P5 Chipboard |
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Thickness | 22mm |
Grade | P5 (Moisture resistant, suitable for use in humid environments as per EN 312 standard) |
Surface Covering | Aluminum Foil |
Thickness | 100 microns |
Properties | High thermal conductivity, corrosion-resistant, and enhances heat distribution across the surface. |
Grooving Specifications | |
Pipe Diameter Compatibility | 16mm |
Groove Spacing | 150mm centers |
Groove Depth | Adequate to secure the 16mm pipes snugly |
Dimensions and Tolerances | |
Board Dimensions: | Length: 1225mm Width: 600mm Thickness: 22mm |
Dimensional Tolerances: | Length: ±2mm Width: ±2mm Thickness: ±0.5mm |
Performance Characteristics | |
Thermal Conductivity | Enhanced by aluminum foil layer, ensuring efficient heat transfer from pipes to floor surface. |
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Moisture Resistance | P5 chipboard ensures durability in humid conditions, reducing the risk of warping or swelling. |
Load Bearing Capacity | Suitable for domestic and commercial flooring applications, providing adequate support and stability once covered with a minimum of 6mm ply or cement board. |
Installation Requirements | |
Subfloor Preparation | Ensure subfloor is clean, level, and dry before installation. |
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Pipe Installation | Insert 16mm heating pipes into the grooves, ensuring they are fully seated and secure. |
Board Layout | Lay boards in a staggered pattern to distribute loads evenly and prevent alignment of grooves. |
Fixing Method | Secure boards with appropriate adhesives and/or mechanical fasteners as required. |
Applications | |
Underfloor Heating Systems | Ideal for use in both residential and commercial buildings, enhancing the efficiency and comfort of underfloor heating systems. |
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Free Delivery as Standard!
As standard we include 2 - 3 working day delivery on all orders delivered to the UK mainland. * A £5 delivery charge will be applied to all orders below £20.
Delivery cut off times
Our final delivery time for Mondays to Thursday is 4:30pm. To give us a bit more time to ensure weekend deliveries are handled and our couriers have time to collect, the final delivery time on Fridays is 4:00pm.
Bank holidays may affect these delivery times, so please contact our team if unsure on 01268 744 479
2-3 working day delivery
Next working day
Next working day before 10:30
Saturday Delivery
* A £5 delivery charge will be applied to all orders below £20. Our delivery cut off time is 4pm on Fridays.
Other Delivery Options
Pre 10:30am and Saturday delivery services are available on orders placed before 4:30pm. Any order placed before 4:30pm on a Friday will be delivered on the following Monday (unless its a bank holiday) so please select a Saturday service if a weekend delivery is required.
Delivery outside the UK
Delivery outside the mainland UK may be arranged by prior agreement. You will be notified of the amount of the charge for this service and will at that point have to make a decision whether you wish to proceed wth 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 01268 744 479.