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 18.01.2025

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

9,9

Check price

Show on Amazon

show more show less

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.

ProWarm™ Insulation Board 6mm to 50mm - XP-Pro 10mm

ProWarm

free shipping

9,8

Check price

Show on Amazon

show more show less

Features

Excellent

Recommendation

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

Nassboards

free shipping

9,7

Check price

Show on Amazon

show more show less

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

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

B2C

free shipping

9,7

Check price

Show on Amazon

show more show less

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

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

Generic

free shipping

9,7

Check price

Show on Amazon

show more show less

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

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

9,6

Check price

Show on Amazon

show more show less

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

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

LOWENERGIE

free shipping

9,6

Check price

Show on Amazon

show more show less

Features

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.
Jablite HP insulation has been tested and approved by the British Board of Agr ment (BBA). Certificate number 87 1796 Product Sheet 4.
Jablite HP Insulation can be used in temperatures up to 80 C. It is therefore suitable for use with underfloor heating systems. Jablite HP does not degrade when placed in high moisture areas and is resistant to the effects of freeze thaw. Jablite HP will remain an effective insulation for the life of the building.
Jablite HP conforms to the required properties as defined in BS EN 13163 2012 Thermal insulation products for buildings Factory made expanded polystyrene (EPS) products Specification. This includes compliance with BS 3837 Part 1
Contains 12 boards, each 45 x 120 x 2.5cm

Tile Backer Board 6MM / 10MM / 12MM - Floor OR Wall Rigid Hard Insulation UNDERFLOOR Heating Cement Tile Backer Board 1200MM X 600MM (10MM Pack of 5 Boards)

Thisiswholesale.co.uk

free shipping

9,5

Check price

Show on Amazon

show more show less

Features

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.
INSULATED XPS FOAM CORE & WATERPROOF Hard backer board has great insulation properties to keep your tiles warm to touch as well as ideal for under floor heating application ensuring heat is retain within the room and thus making installations more energy efficient - U value as low as W m2 on 12mm tile boards
EASY TO INSTALL SIZE ESPECIALLY IN SMALL BATHROOMS & EN-SUITES - 600MM X 1200MM Tile backer comes in a convenient size for transporting up stairs and into narrow spaces such as bathrooms and ensuite rooms as well as suiting a range of stud centres such as 300mm, 400mm and 600mm without cuts
CUTS WITH A STANLEY KNIFE Tile backer boards cut with a sharp stanley knife & straight edge, saving time and money on expensive power tools as well as capable of cutting various shapes and sizes by hand such as cutting around pipes, furniture and appliances etc. & no pre-drilling required simply drill through with wood screws using 36mm steel washers (sold separately- recommended 15 fixings per board)

SuperFOIL Radpack Radiator Insulation Reflective Foil - 0.6m x 5m - Enhances Radiator Efficiency - Easy to Install, Adhesive Pads Included

SuperFOIL

8% off

free shipping

9,5

Check price

Show on Amazon

show more show less

Features

Join our sustainability efforts with the SuperFOIL DIY range. Made with up to 40% recycled material, our heat reflective sheet radiator foil is eco-friendly and easy to install
Get more value with our SuperFOIL Radpack radiator reflector foil - one sheet is enough for up to 3 average-sized radiators or approximately 5 smaller radiators! Cut to size with regular scissors and easily install for a quick energy-saving upgrade
Choose a trusted brand for your insulation needs. Our SuperFOIL products comply with UK building regulations and meet EU regulations like CE, so you can rest easy knowing you're making a reliable investment in your home's energy efficiency

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

YOUNTHYE

free shipping

9,5

Check price

Show on Amazon

show more show less

Features

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.
REDUCE YOUR BILLS - Our 5mm camper van insulation self adhesive can be a great choice to maximise energy savings to keep your garage or room warm in winter and cool in summer - you ll notice the saving on your energy bills!
EASY TO USE - The 10m radiator reflector panels is easy to use and install with the self- adhesive design, long-lasting adhesion, does not come off easily, It is flexible enough to be cut to any shape and size to match where it fits, the foldable design allows you to store it easily.
WORRY FREE SHOPPING - YOUNTHYE have been committed to providing high-quality products and after-sales service for all customers, if you have questions about our self adhesive radiator reflector panels, please free free to contact us.

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.

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

Triplast Expanded Polystyrene Foam Sheets EPS 70 (10 Sheets, 600 x 400 x 10mm Each) - Wall & Floor Insulation Board (BBA Certified) - Box Lining & Packaging Foam Board - Arts & Craft Foam Blocks

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!

free shipping

Check price

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

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

Thermopanel Tile Backer Board Insulation Sheets (800 x 600mm) Waterproof Insulated Thermal Barrier for Underfloor Heating Wetroom Bathroom Plasterboard Walls Sheet Wood Floors Tiles

Each 10mm Tile Backer Board Measures 800 x 600 x 10mm (LxWxD)

Check price

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

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.

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.

free shipping

Check price

VOUNOT Insulation Roll Radiator Foil 10m x 60cm x 3mm, Double Aluminum Bubble Heat Thermal Reflector Panels

Premium Material - Double thermal bubble roll is made of aluminum foil and combined with durable bubble core, which is lightweight, waterproof, vaporproof, soundproof, blackout and non-conductive. Perfect for car, garage, poultry hutch, pools and heater reflector

free shipping

Check price

BXI Ceramic Fiber Thermal Insulation Board(1500°C) - 30cmx20cm, Thickness: 2cm, Pack of 1 - Inorganic - Flame Retardant, Heat Resistant, High Temperature Insulation

SPECIFICATION 30cm x 20cm x 2cm; Weight 0.63kg; High DENSITY 600kg m3; MATERIAL Aluminosilicate

Check price

Vapour Barrier and Waterproof Thermal Insulation Aluminium Foil Membrane - Suitable for use in Walls, Floors and Roofs - 1.5m x 50m (75 SQ/M) - 110 G/SM

LOWER YOUR HEATING BILLS - Vapour barrier membrane - Say goodbye to unwanted moisture and hello to a more comfortable home with our high-quality vapour barrier. It's perfect for use on floors, walls, and roofs, providing an effective insulating layer that reduces heat loss and lowers your heating costs.

free shipping

Check price

Loft Floor Boards Panels 320mm x 1220mm x 18mm Pack of 3 Heavy Duty Grade P4 Flooring Narrow T&G Chipboard 2 Packs (2.2m2 Coverage)

Tongue & Groove Loft Panels

free shipping

Check price

Fastwarm 20mm XPS Insulation Boards

XP insulation boards are waterproof

free shipping

Check price

The best floor insulation boards in comparison

Guaranteed independent and reliable

Features

Features

Features

Features

Features

Features

Features

Features

Features

Features

You might also be interested in these floor insulation boards.

Our offer