Now available at our Andover Branch for order & collection - 32/1000 Box Profile Roofing Sheets

2.4m Fibre Cement Backer Board for Construction, Exterior Grade

From £16.32

About this product

Cladco Fibre Cement Exterior Grade Construction Boards are multi-purpose Backer Boards used in construction, offering many benefits over ply or plasterboard. This material is ideal for levelling uneven surfaces, using in damp-prone areas, as well as use around fireplaces due to being A1 fire rated. 2.4m lengths available and in 6mm, 9mm, 12mm and 18mm thicknesses.

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Total Price: £16.32 Inc VAT
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2.4m Fibre Cement Backer Board for Construction, Exterior Grade

2.4m Fibre Cement Backer Board for Construction, Exterior Grade
2.4m Fibre Cement Backer Board for Construction, Exterior Grade

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Cladco 2.4m Fibre Cement Backer Board

Fibre Cement Backer Boards can be used as boarding on floors or walls before tiling, as a ceiling board, a fire surround. As a non-combustible, A1 fire-tested material, Fibre Cement Backer is ideal for use around fireplaces.

Exterior-grade Fibre Cement Backer Boards have excellent water-resistant properties, meaning that these Boards will last much longer than ply or plaster alternatives. Boards give a suitable even surface for working off, covering up damp-prone areas or uneven walls/floors.

These Boards provide a stable base to work from for various types of construction or DIY jobs.

Looking for a different size?
For 1.2m length Boards, see our 1.2m Fibre Cement Construction Backer Board

Fibre Cement Backer Board Benefits:

Suitable for wet areas
Fire Rated (A1 certification)
Strong and stable - greater load bearing than plasterboard
Ideal for underfloor heating systems
Resistant to water or mould
Lightweight and simple to install

Fibre Cement Boards are manufactured from a cellulose fibre and cement mix. Various sizes are available from 6mm to 18mm to suit your application. Options also include 9mm and 12mm.

Installation is easy using a blade to cut Boards. Please note that we do not recommend using a dry saw due to dust emissions. We recommend using flexible adhesive, rapid-set, or countersunk screws, as well as backer tape when tiling.

Dimensions: 2.4m x 1.2m
Thicknesses: 6mm, 9mm, 12mm, 18mm
Colour: Plain Fibre Cement
Weight per 2.4m Board: 35.95kg (6mm), 41.20kg (9mm), 59.73kg (12mm), 109.20kg (18mm)

Be sure to seek advice from a professional for priming, or painting Cladco Fibre Cement Backing Boards.

Load Testing Cladco Backer Boards:
Test Number Sample Size (mm) Load Achieved at point of failure (kN)
1 1200 x 800 x 6 1.55
2 1200 x 800 x 9 1.68
3 1200 x 800 x 12 5.26
4 1200 x 800 x 18 6.07
5 2400 x 1200 x 6 1.55
6 2400 x 1200 x 9 2.69
7 2400 x 1200 x 12 4.22
8 2400 x 1200 x 18 6.71

See full report - Load Testing Cladco Backer Boards, STS-UK Laboratory

Are Fibre Cement backer boards water resistant?

backer boards have brilliant water-resistant properties, and so they will last much longer than plaster or ply alternatives. These Boards provide an even surface for tiling on and can cover uneven walls/floors or moisture-prone areas.

Are Fibre Cement backer boards Fireproof?

Fibre Cement backer boards are produced from a hybrid of cement mix and cellulose fibres, making them an A1 fire-resistant, non-combustible material that is ideal for usage around fireplaces.

How are Fibre Cement backer boards cut?

Before cutting Fibre Cement Boards, it is important to remember to use Safety Gloves when handling, moving and cutting the Boards. *Please note: due to the nature of the materials, it is recommended that a suitable dust mask is worn when cutting the Boards. Wipe away any residue with a damp cloth to avoid dust and particles from becoming airborne.

6mm & 9mm Boards: These slimmer Boards can be cut with a straight edge and a scoring blade/knife. 12mm & 18mm Boards: Cut the thicker 12mm & 18mm Fibre Cement Boards with a circle saw with a built-in extractor and a suitable filter on a sturdy bench. This will provide a straight, clean line and reduces dust entering the surrounding air. *Please note that due to the nature of the materials, it is recommended that a suitable dust mask is worn when cutting the Boards. Wipe away any dusty residue with a damp cloth to avoid particles from becoming airborne.

What can Fibre Cement Boards be used for?

As a multi-use product, Fibre Cement backer boards can be fitted under tiling, onto walls, as replacement floorboards, fitted directly onto cement floors, as ceiling boards, or as a fire surround for fireplaces.

Where can I Install Fibre Cement Boards?

As a multi-use product, Fibre Cement backer boards can be fitted in various ways, thickness depending. Boards of all thicknesses and sizes need to be fitted with a staggered/brick pattern during installation if being used for flooring, to ensure corners do not all meet at any single point.

6mm backer boards are regularly installed for concrete flooring projects because the thinner nature of the Board won’t lift floor levels, whilst producing a creak-free finish. 6mm Boards can be fixed to flooring with a thin-set, polymer-enriched mortar or flexible adhesive applied directly onto the below concrete, then place Boards on top. Allow a set time for a minimum 24hrs, before fastening into place with screws. To seal joints between Boards, add a layer of thin-set mortar over mesh tape with a putty knife

9mm and 12mm Boards are generally designed for use on walls, with the Board’s thickness varying according to the project needs. -For walls in a busy area such as a corridor, or for stud walls, 12mm Boards are suggested because of their high-strength and extra soundproofing qualities. Fix 12mm Boards to stud walls using washers and screws with a minimum 20mm gap from the Board’s edges. -We recommend 9mm backer boards are used for solid walls which can be secured using a quick set, flexible tile adhesive. Once fully set, washers and screws can mechanically fit the Fibre Cement Boards to walls.

18mm Boards are recommended for installation on floors with underfloor heating systems and new build floors, due to improved strength, heat and sound insulation from the thicker Board. Fibre Cement backer boards can be directly fitted onto joists to replace floorboards. Compared to plywood floorboards or other wood-based building materials, 18mm backer boards have minimal risk of movement and are generally more robust.

PLEASE NOTE – Extra care should always be taken when handling metal sheets and flashings we advise using the correct type of Glove when handling or moving metal sheets and flashings. Gloves can be purchased on our website.


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Nationwide Delivery service available for all items with a range of options. The table below shows available options and timescales for delivery..

Useful Links: Delivery Policy | Collection Policy


Nationwide Delivery estimated within 7-10 working days.


Goods can be collected from Okehampton, Devon. Please allow 5 working days prior to collection.

Safety Advice

Please note for collection or delivery suitable safety equipment is required for the handling of materials.

Pricing Table

Cladco Profile Delivery
(Orders under £500)
Estimated 7-10 working days* £192.00
Cladco Profile Delivery
(Orders over £500)
Estimated 7-10 working days* £96.00
Cladco Profile Delivery
(Scotland Delivery)
within 15 working days* £360.00
Parcelforce Standard
(Small Parcels)
3-5 Working Days £5.99
Parcelforce Standard
(Large Parcels)
3-5 working days £24.99
Sample Packs 5 Working Days FREE
*Please allow for public holidays and weekends (non-delivery days)

Roofing items may be delivered on a pallet, as per the terms and conditions these are considered part of the packaging and will need to be disposed of by the receiver of the items. We are unable to remove this pallet after delivery.

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