Finnfoam FF-PIR SAUNA Insulation Board (30mmx600mmx1200mm pack of 10)

Finnfoam FF-PIR SAUNA insulation board is a quality tongue and groove polyurethane insulation board for use around the walls and ceiling of the sauna. Expertly manufactured in Finland to the highest standards, these panels are purpose-built to deliver exceptional thermal insulation and airtight performance - all in a single, slimline board. 

Pack Size: 10 sheets/boards.

Vapour Barrier and Insulation in One 

No need for multiple layers - Finnfoam's FF-PIR panels combine a vapour barrier and thermal insulation in a single product. Each panel is coated with a diffusion-proof aluminium laminate on both sides, providing robust resistance against moisture and ensuring long-term durability in hot, humid conditions. Simply seal all seams with polyurethane foam and heat resistant aluminium tape to create a fully vapour-tight envelope. 

Whether you're insulating the sauna walls or ceiling, these boards help maintain energy efficiency and prevent heat loss, ensuring you sauna heats up efficiently and stays warm.

Safe and Easy to Work With

FF-PIR Sauna Insulation Panels are lightweight and easy to handle, ideal for both professionals and self-build enthusiasts. Shaped easily with common woodworking tools or simply scored and snapped with a utility knife, they make installation effortless even in tight or complex spaces. 

With tongue-and-groove edges on all sides, each board fits snugly and securely, minimising thermal bridging and ensuring a continuous insulation layer. 

Designed for Performance

Engineered for the unique demands of sauna environments, the panels offer a premium, space-saving solution for heat retention and moisture control. The mould-proof, vapour-proof and aluminium foil laminated surfaced panels can withstand temperatures of up to +200 °C meaning that they are ideal for use in saunas. Their 600 x 1200 mm size also makes them easy to install in small spaces and the board is suitable for use as additional heat insulation inside dry rooms.

• Working temperature: -50°C to +120°C (short-term up to +200°C)
• Thermal conductivity (λD): 0.022 W/mK
• Board size: 30 x 600 x 1200 mm
• Indoor air rating: M1 – the best possible class for low emissions
• CE certified to EN 13165 standard

Declaration of Performance

Christmas and New Year's Delivery Notice

Please note the following changes to our pallet shipping and DPD delivery service on parcel orders over the Christmas period.

Our warehouse is fully closed for operation over the following days: Wednesday 24 December, Thursday 25 December, Friday 26 December, Wednesday 31 December and Thursday 1 January.

Orders requiring a pallet

The last dispatch date for orders requiring a pallet is Friday 19th December 2025. Pallet orders dispatched on this day must be booked and signed for with one of our sales team representatives latest by close of business on Friday 19th December 2025.

Please note:

• Pallets dispatched on 19th December will be delivered on either 22nd or 23rd December, depending on your postcode
• We strongly advise against booking deliveries to the Highlands or Channel Islands close to the 19th December, as these may be held at the hub over the festive period
• There may be limited availability for pallet shipping on this day and we cannot guarantee that available slots remain

We will commence our regular pallet shipping service on Monday 5th January 2026.

If you have any questions about your pallet order, please get in touch with our Sales team: +44 (0) 20 8050 2895 or email info@finnmarksauna.com

Small Parcel Orders

DPD will deliver as normal up to and including Tuesday 23rd December 2025. Orders for next day delivery must be placed latest by 3pm.

Limited dispatch service: We will dispatch DPD orders on Monday 29th December and Tuesday 30th December only during the festive closure period.

We will commence our regular delivery service on Monday 5th January 2026.

*Estimated delivery times are applicable to the UK mainland only (excludes Highlands and Islands). Additional delays and charges will be required for Non-UK Mainland and Highlands and Islands deliveries.