WhichOne › DIY store & garden › flooring › flooring accessory › floor insulation board

The best floor insulation boards in comparison

Guaranteed independent and reliable
Millions of satisfied users every year
Last updated on 24.04.2025

Filter

Sort

Brand:Reduced items only:

Best choice

Draughtex Floorboard & Skirting Board Insulation, Floor Gap Filler Draught Excluder - Thick 6-11mm 10m roll

DraughtEx

free shipping

show more show less

9,9

Check price

Show on Amazon

Features

Proven floorboard gap filler designed to reduce cold draughts and save money.
Potential savings up to 40 GBP per room per year on energy bills and reduce CO2 contribution by around 110kg.
Also available in additional sizes to fill all gaps thin for gaps less than 3mm, standard for gaps 3 to 7mm.
Flexible properties allow for easy fitting into floorboard gaps, requires no adhesive or specialist skill. Easy-to-use applicator included.

Nassboards XPS Boards Floor Underlay Thermal Insulation Underfloor Heating - 25 x 6mm (18m2)

Nassboards

free shipping

show more show less

9,8

Check price

Show on Amazon

Features

EXCELLENT INSULATION The Nassboard XPS Insulation Boards are a must have addition to your underfloor heating kit to add extra insulation and increase the energy efficiency of your underfloor heating system. All boards are manufactured from black foam polysynthetic and will not deteriorate. It will provide excellent insulation and the highest R rating available on the market, saving heat and energy making sure that your heating is cost effective speeds up the time it takes to warm your home
MOULD RESISTANT BOARDS Not only an excellent material to combine with your underfloor heating system, the XPS Insulation Boards by Nassboards are perfect for using in outbuildings and other areas to protect against cold and damp thanks to their waterproof properties. Since they re waterproof, these boards will not rot or go mouldy, and will prevent damp from seeping through your floor. The XPS Insulation Boards are available in 10mm thick or 6mm thick, with each sheet measuring 600mm x 1200mm
EFFICIENT AND ECONOMIC HEATING Made from high-quality polysynthetic materials, the Nassboards Thermal Insulation Boards are excellent when used as an underlay, and will speed up the time It takes to heat up any room by up to 30%, and reduces heat lost through the floor. The XPS Insulation Boards help improve the economic value of your underfloor heating, and reduce your heating bills significantly
LIGHTWEIGHT AND EASY TO INSTALL Each sheet of XPS Insulation is lightweight, versatile and can be installed with ease. You don't need a jigsaw or any expensive tools to cut or shape these Boards, you can easily cut them to size with a sharp knife. These boards can be installed on any surface, such as concrete or timber, improving insulation and greatly reducing the time it takes to heat up your floors and the running costs involved with underfloor heating
LIFETIME WARRANTY Every purchase that you make with Nassboards comes with a lifetime guarantee. We at Nassboards stand behind all of our products, so if at any point you are not happy with your product, get in touch with us so that we can issue a replacement or a refund at any point during the product's use. Customer satisfaction is our number one priority, so that you can enjoy a stress free experience when shopping with Nassboards

PIR Insulation Board 25mm - 400mm x 1200mm for use in Roofs, Walls and Floors (18)

Generic

free shipping

show more show less

9,7

Check price

Show on Amazon

Features

Rigid Insulation This 25mm PIR insulation board provides excellent thermal insulation properties to help reduce energy costs.
Versatile Application Suitable for use in floors, walls, and roofs in new-build and renovation projects.
Easy Installation Lightweight yet sturdy boards measure 400mm x 1200mm for convenient handling and installation.
Moisture Resistant The closed-cell structure resists moisture ingress, ensuring long-lasting performance.
Pack Contents Each pack contains 6 insulation boards, covering an area of 2.88m2

YBS Essentials Multi Purpose Bubble Foil Insulation Roll | 1200mm x 25m, 3.5mm Thickness | DIY 3-in-1 Thermal Reflective Insulation | Radiator Foil | Roofs, Walls, Floors, Motorhomes, Cellar & Garages

YBS Insulation

free shipping

9,5

Check price

Show on Amazon

Triplast Expanded Polystyrene Sheets EPS 70 (12 Sheets, 1200 x 600 x 50mm Each) - Wall & Floor Insulation Board (BBA Certified) - Box Lining & Packaging Foam Board - Arts & Craft Foam Blocks

Triplast

free shipping

show more show less

9,4

Check price

Show on Amazon

Features

USE #2 - PROTECTIVE PACKAGING Shock-proof, impact-resistant & lightweight packing foam sheet for cushioning fragile items, box lining or interleaving flat items (e.g. glass panels) - prevent damage & keep items in place during shipping & storage!
USE #1 - INSULATION BOARD Energy-efficient, damp-proof & odourless insulation foam for thermal insulation. Use for wall & floor insulation, shed insulation or as polystyrene ceiling tiles - these are BBA certified construction boards!
AN ECO-CONSCIOUS CHOICE Made with no HCF's, CFC's or HCFC's, these EPS foam sheets have a zero Global Warming Potential (GWP) & low O-Zone Depletion Potential (ODP) - go sustainable with our BRE Green Guide A+ Rating certified expanded foam boards!

ProWarm 6mm Insulation Boards - ProFoam 14 Pack (10m2)

ProWarm

free shipping

show more show less

9,4

Check price

Show on Amazon

Features

Compatibility with Foil Underfloor Heating ProWarm ProFoam Boards are specifically designed to work seamlessly with foil underfloor heating systems, ensuring efficient heat distribution and cost savings across wood and carpet underfloor heating systems.
Underlay for Wooden Floors These boards not only provide insulation but also act as a high-quality underlay for wooden floors, enhancing the comfort and durability of your flooring.
Cost-Effective Underlay Even if you're not using these boards with underfloor heating, they serve as the most cost-effective high-quality underlay for wooden floors available in the UK!
Optimal Dimensions Each board measures 856mm x 600mm, providing a practical size for installation. With a coverage of 0.51m per board, a pack of 14 boards can cover 10.27m .

£ 25.99

£ 31.19

Recommendation

Tile Backer Boards 10mm / 7.2m2-1200 x 600mm, Waterproof Insulation for Underfloor Heating (10 Boards)

Living Heat

free shipping

show more show less

9,4

Check price

Show on Amazon

Features

Tile Backer Boards are ideal for use with Electric Underfloor Heating and provide a thermal barrier with extremely high thermal efficiency. Lightweight and easy to handle.
Tile Backer Boards are easy to install. Easy to Cut & Handle. They can also be directly tiled on to using a flexible tile adhesive.
Can be used on top of wooden and concrete subfloors. Can also be used for walls. Can accept the weight of the heaviest wall tiles unlike plasterboard.

XPS Underlay Insulation 5mm - Wood or Laminate Flooring - Like Fibreboard (1 Pack - 5m2)

B2C

free shipping

show more show less

9,4

Check price

Show on Amazon

Features

Size 5m2 per Pack
Quantity 10 Boards Per Pack
Sound Reduction 20db approx.
Features Warmer - 2 Tog, Keeps the cold out and the warm in Quieter - Absorbs noise by 20db Drier - Non Absorbing Smooths - Levels minor floor imperfections Supports - Braces board joints Durable - Mould resistant Lightweight - Easy to fit

EkoBoard 20mm XPS Boards Floor Underlay Thermal Insulation Underfloor Heating (1200 x 600mm) (5 Pack), Blue

EkoBoard

free shipping

show more show less

9,4

Check price

Show on Amazon

Features

EkoBOARD XPS panels provide excellent insulation, and are a premium quality product perfect for underfloor heating. XPS Insulation Boards are ideal for solid base floors and will reduce the warm-up time while considerably decreasing your electricity bill.
XPS Boards are ideal for use as an underlayment for flooring, tiles, insulation or electric underfloor heating.
Ekoboard XPS Insulation Panels are also an extremely cost effective solution and will improve the performance of your heating.
EkoBOARD panels are made of XPS which is an extruded polystyrene, and is easy to cut and shape.

XPS Foam Underlay 5mm Thickness for Wood and Laminate Flooring/Insulation/Boards for High Sound & Thermal Insulation (1 Pack (9.79m2 Coverage))

FloorPro

free shipping

show more show less

9,3

Check price

Show on Amazon

Features

FloorPro XPS Foam Underlay Suitable For All Wood and Laminate Flooring
Upto 2.2 TOG and 23dB Sound Reduction
Helps Level Uneven Floors
Advice Make sure you buy Barrier Pro X Tape to join the board pieces together

This ranking is created through algorithmic analysis of millions of products tailored specifically to your search. We aim to find the most suitable product for you based on manufacturer information and price. The ranking reflects our opinion and should serve as a good starting point for your purchase. We would like to point out that we have not tested the products ourselves and link to selected online shops and partners from which we may receive compensation.

You might also be interested in these floor insulation boards.

Jablite 25mm Multi Purpose Insulation Boards Floor Wall Roof & Underfloor Heating (12)

Jablite HP (High Performance) is a closed cell expanded polystyrene (EPS) multi-use insulation board suitable for a wide range of insulation applications. Jablite HP is grey in colour due to the carbon additive which acts within the boards to disperse and reflect heat radiation. This gives the boards an improvement in thermal performance compared to white EPS.

free shipping

Check price

YOUNTHYE Self Adhesive Reflective Aluminium Foam Insulation 5mm Thick, 24cm x 10m Radiator Reflector Panels, Foil Insulation Roll for Floors, Roofs, Garage Doors and Camper Vans

WIDELY APPLICATION - 10M Self adhesive foil insulation 5mm can be used as wall insulation roll, kitchen radiator, window insulation film, sound insulation sheet and heat reflective sheet, great for home, office, caravan, garage, greenhouse and etc.

~~£ 24.99~~ free shipping

Check price

SuperFOIL The Shed Insulation Kit - Foil Multi Purpose Wrap and Fixings 21sqm

3-in-1 Comfort Solution - Keep your home snug in winter and cool in summer with SuperFOIL's radiant barrier, vapour barrier, and insulation rolled into one

free shipping

Check price

Tile Backer Board 6MM / 10MM / 12MM - Floor OR Wall Rigid Hard Insulation UNDERFLOOR Heating Cement Tile Backer Board 1200MM X 600MM (6mmx5pcs with 75 washers)

FIBRE CEMENT BOARD FACE GIVING TILES BETTER ADHESIVE OVER TIMBER & PLASTERBOARD Rigid cement board face gives great adhesive properties for tile adhesives over timber sheet and plasterboard, ensuring solid permanent adhesion reducing grout cracking by reducing excessive flex or movement. Whatsmore faced on both sides so can use adhesive to bond to solid walls and floors. Each board might have +-1mm tolerance on the thickness.

free shipping

Check price

Dripex Self Adhesive Aluminium Foil Insulation, Thermal Soundproof Cotton Layer, Heat Reflector & Radiant Barrier, Ideal for Roofs, Walls & Camper, 5mm, 0.5m x 10m(5㎡)

Fits Anywhere - Ideal for Floors, Roofs, Walls, Van, Camper, Caravan, Garage, Greenhouse, Shed, etc.

~~£ 36.99~~ free shipping

Check price

Fibre Boards Floor 7mm Laminate Flooring Underlay Engineered Insulation Thermo Sound Wood Floor - 1 Pack 9.6m2

Eliminates considerable unevenness in the subfloor

free shipping

Check price

Drybase Liquid Damp Proof Membrane (5 Litre, White) - Damp Proofing Paint for Internal Walls and Floors. Waterproof Paint

Extensively tested for high performance and produced in accordance with quality and environmental management systems - 1L Coverage Approx. 1m

free shipping

Check price

Yuzet 1.2m x 25m Silver Multi-Purpose Double Aluminium Bubble Insulation Foil. Loft, Wall, Home, Caravan, Attic, Garage, Roofs

Resistant to water, vapours and corrosion

free shipping

Check price

BLOSTM Foil Insulation Roll 10m x 60cm - Radiator Reflector Panels for Floor, Ceiling, Roof, Wall Insulation - 3-in-1 Reflective Foil Insulation Roll - Heat & Vapour Barrier Saves Energy

ENERGY EFFICIENT - This foil bubble wrap insulation reflects 97% of the heat back into your room. There is less energy needed to heat your home with radiator reflector panels; so you can turn the temperature down. Helping reduce your carbon footprint with the BLOSTM Radiator Reflective Foil.

free shipping

Check price

XPS Foam Insulation Boards Floor Underlay 800 x 600 x 5mm - Coverage 9.79Sqm - Electric and Water Underfloor Heating Tile Laminate Underlay Thermal Extruded Polystyrene Sheets

EASY TO INSTALL Each sheet of XPS Insulation is lightweight, versatile and can be installed with ease. These boards can be installed on any surface, such as concrete or timber, improving insulation and greatly reducing the time it takes to heat up your floors and the running costs involved with underfloor heating.

~~£ 22.99~~ free shipping

Check price

MYOYAY Coin Rubber Garage Flooring Matting 5x1M Rubber Matting Roll Rubber Board Mat 3mm Thick Heavy Duty Checker Plate Matting Insulation Mat for Gym Shed Van Garage Workshop

Rubber Matting Size Total Size 1m x 5m(WxL),Thickness 3mm. The rubber matting roll is made of premium quality rubber which is is insulated,slip resistant,high elasticity,wear resistant,water proof.

~~£ 59.99~~ free shipping

Check price

150Pcs Self Stick Insulation Pins 2-1/2 Inch, 1.5 Inch Self Locking Washers Round 7/8 Inch Aluminum Insulation Hangers Dome Cap Washers Insulation Stick Pins for Foam Board Wall Floor Ceiling

Self Stick Insulation Pins Set you will receive 50 pcs insulating pins, 50 pcs self locking washers round and 50 pcs insulation dome cap washers, total 150 pcs 50 set, features a self adhesive design, allowing it to be fixed onto plaster board or ceilings without the need for glue,.sufficient quantity and various styles can meet your daily needs and replacement

free shipping

Check price

The best floor insulation boards in comparison

Guaranteed independent and reliable

Features

Features

Features

Features

Features

Features

Features

Features

Features

You might also be interested in these floor insulation boards.

Our offer