Changes to the way you can order
Due to increased delivery costs, we need to implement a minimum order value across our product ranges. The minimum order value is £200 (ex VAT) / £240 (inc VAT). This will enable us to continue to keep our prices low and our service levels high. We thank you for your business and continued support during these unprecedented times.

Marmox Multi Board - The Original Marmox Board

As low as
From  £37.39  inc VAT
From  £31.16  ex VAT
In stock
Marmox Multi Board
As low as
From  £37.39  inc VAT
From  £31.16  ex VAT
size: 600mm x 1250mm

Need to discusss your enquiry further? Please contact our customer services team at [email protected], who will be happy to help.

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Marmox Multiboard is ideal for many applications. It's multipurpose use makes it ideal for waterproofing, insulating and dry lining.

One easy to install board – gives you both waterproofing AND insulation!

The Marmox Board offers you a wide range of advantages, including:

  • Waterproofing & a barrier against damp
  • Thermal insulation
  • Impact sound reduced by 25 decibels
  • Load bearing - 40 tonnes/m²
  • High flexural strength
  • CFC & HCFC & Asbestos free
  • Unaffected by freeze/thaw cycle 

Marmox Boards are high performance, reinforced, insulation boards made of waterproof extruded polystyrene, each side faced with fibreglass mesh embedded into a cement polymer mortar. Marmox Boards are the perfect solution for insulating and waterproofing in one operation.

Marmox Boards can be used for all kinds of applications, including:

  • Rigid boarding for partitions
  • Wet rooms
  • Loft conversions
  • Shower cubicles
  • Dry lining / insulation to cellars
  • Tile backing board
  • Under floor heating insulation

Multiboards can be used to insulate and waterproof walls, floors and ceilings and are available in many thicknesses ranging from 4mm to 60mm. 12.5mm, 20mm and 30mm are ideal for walls although thicker sizes can also be used. The thinner 4mm, 6mm and 10mm are ideal for covering floors before tiling. Especially usefull when used with underfloor heating wire to reduce your heating costs. The thicker the Multiboard the better the insulation.

Marmox Multiboards can be used all over the house as an insulation board and then simply tiled over or plaster finished. If using underneath carpet then a thin sheet of ply (10mm) or a fibre reinforced flooring compound should be used over the top before the carpet is laid down.



Orders and Delivery

Orders and Delivery

Free delivery if your order is over £300 inc VAT. Orders between £240-£300 are subject to a £36.00 Inc VAT delivery charge. Any orders under £240, we are unable to accept.

When ordering on line you can specify the date of delivery, however we would not be able to specify the time of delivery on that day.

♦ Please note that we have a number of large vehicles, including articulated vehicles that may be used for delivery. Please advise us in the comments on your order if access to the delivery address is limited.

♦ Due to insurance guidelines, delivery personnel are unable to enter private residences. Delivery will be as far as possible to the kerbside of the delivery address. The recipient of the products is responsible for any additional lifting once the delivery has been made. Please bear in mind that Insulation products can be bulky and / or heavy.

♦ The delivery driver will require a signature to confirm the goods have been received.


† Unfortunately we, Insulation Express, cannot deliver to the Highlands & Islands of the UK. However we will be happy to deliver to a freight forwarding company on your behalf.

Returns and Refunds

Returns and Refunds

In the unlikely event that you need to return an item, please contact our team on [email protected] within 14 days of accepting delivery of the item. Restocking charges may apply. We will discuss this with you upon receipt of the cancellation request. Restocking charges will be applied where the products are no longer required AND NOT for goods returned because either defective or damaged. We usually charge 25% of value (minimum £25.00).

Please note that we cannot accept returns on special orders. Special orders may consist of items sent via third party shipping companies or made to measure products. If you are unsure on whether or not your item is a special order, please contact us on [email protected] prior to placing the order.

Free delivery on orders over £300! Free delivery on orders over £300 Terms and Conditions apply

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