Marmox Multiboard Tile Backer Board (600x1200mm)
Marmox Multiboard Tile Backer Board (600x1200mm)
Marmox Multiboard — Board Quantity Calculator
600 × 1200 mm · 0.72 m² per board · BBA Certified · Walls, Floors & Ceilings
Enter your area and wastage allowance to calculate how many boards you need.
Boards needed
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600 × 1200 mm · 0.72 m² per board
Total area covered
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Surplus
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Based on 0.72 m² per board (600 × 1200 mm). Lay in a brick-bond pattern and tape all joints with Marmox scrim tape (or waterproof tape in wet areas). This calculation is for estimation only.
In Stock Next Day Delivery | Order Before 12 PM | Subject to Stock Availability
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| Type | Backer Boards |
|---|---|
| Brand | Marmox UK |
| Area | Internal |
| Material | Polystyrene |
| Model | Multiboard |
| Shape | Rectangle |
Marmox Multiboard 600 x 1200mm (All Thicknesses)
Waterproof | Insulating | Load-Bearing | Tile Backer Board for Internal Use
The Marmox Multiboard (600 x 1200mm) is a high-performance tile backer board designed for internal use on walls, floors, and ceilings. Suitable for both domestic and commercial settings, this board offers an unbeatable combination of waterproofing, thermal insulation, and mechanical strength. It provides an effective decoupling layer between tiles and substructures, helping to prevent cracks caused by substrate movement while supporting heavy tile installations.
Key Benefits:
- Lightweight: Easy to handle and install, reducing labor time.
- Waterproof: Impermeable to water, making it suitable for wet areas like bathrooms and kitchens.
- Thermal Insulation: Provides excellent thermal resistance (R-values from 0.11 to 1.67 m²K/W, depending on thickness).
- Chemical and Heat Resistance: Resistant to heat and chemicals, suitable for underfloor heating systems.
- Easy to Cut: Can be cut in straight lines with standard tools.
- Enhanced Tile Adhesion: Provides a strong base for tiling or plaster finishing.
- High Load Capacity: Supports over 100 kg/m² on walls and 40 tonnes/m² on floors.
- Flexible Orientation: Can be aligned horizontally or vertically.
- Safe and Sustainable: Contains no hazardous substances, with low environmental impact.
- Certified Quality: ISO 9001, BS EN 5385-2, and CE marked to EN 13164.
- Sound Insulation: Offers impact sound reduction of 21 dB.
Applications:
- Wet rooms, bathrooms, and kitchens
- Underfloor heating systems
- Insulated internal walls and ceilings
- Over timber, concrete, plywood, chipboard or OSB substrates
- Construction of bathroom furniture and shelving (with thicker boards)
- As an alternative to thermal plasterboard (can be plastered or tiled over)
Storage and Installation
- Storage: Store boards flat and cover joints with scrim or reinforcing tape.
- Installation: Follow manufacturer’s fitting instructions for each substrate. Boards can be fixed with adhesive or mechanical fasteners.
Fixing Options Based on Substrate:
Marmox Multiboard can be applied using adhesive, mechanical fixings, or both, depending on the surface. Suitable for:
- Concrete floors
- Timber or metal frames (at 300, 400, or 600 mm centres)
- Plywood or OSB flooring
- Plastered or uneven block walls
- Raised access flooring
| Manufacturer | Marmox |
|---|---|
| Material | Extruded polystyrene (XPS) with a cementitious surface. |
| Dimensions | 600 mm x 1200 mm (±2 mm width, ±5 mm length). |
| Shape | Rectangle |
| Density | 36 kg/m³ |
| Fire Performance | Euroclass E |
| Compressive Strength | >400 kPa at 10% compression. |
| Thermal Conductivity | 0.034 W/m·K (maximum). |
| Water Absorption | <1% (Two-day immersion) |
| Impact Sound Reduction | 21 dB |
| Expansion Coefficient | 0.07 mm/mK |
| Country of Origin | Egypt |
UK Mainland & Scottish Highlands only
We do not deliver to Islands, Ireland or Northern Ireland
How is shipping calculated?
Shipping is based on your order weight and delivery location. Add items to your cart and enter your postcode to see the exact cost before checkout.
Some products supplied directly from our manufacturers (non-stocked brands) carry a separate delivery charge — this is shown clearly at checkout.
Free delivery on orders £450+ inc VAT
Tiles & tiling materials only · Free samples always ship free
Next working day delivery
Order before 12:00 pm · From £6.50 + VAT · APC Overnight or DPD · Under 50 kg
Not available weekends or bank holidays
No next-day to Scotland postcodes
AB · IV · KW · PA — please allow additional working days for these regions
Pallet delivery — orders over 50 kg
Semi, half or full pallet · Palletways or K & R Mason · Next working day
Kerbside delivery only — driver cannot bring goods onto the property
Supplier direct delivery (non-stocked products)
Some brands are shipped directly from the manufacturer and carry a separate delivery charge, shown at checkout.
Genesis (trims) — £19 + VAT · 1–3 days · cut-off 11:00 am
Marmox (mosaics, shower trays) — £15 + VAT · 1–3 days
Marmox (oversized backing boards) — £65 + VAT · 1–3 days
Schluter (trims) — £20 + VAT · 1–3 days
Bihui (trims) — £15 + VAT · 1–3 days
Free sample delivery
No minimum spend · Up to 4 free samples · Next working day
Free Click & Collect
Select Click & Collect at checkout to pick up your order from our Croydon warehouse. We'll send an email confirmation once it's ready — please wait for this before visiting.
Bring your order confirmation email or order number when collecting.
If someone is collecting on your behalf, they must have the order number and the name on the order.
Mon – Fri, 8:30 am – 4:30 pm. Closed weekends & bank holidays.
Tile Experience, 108 Beddington Lane, Croydon, London, CR0 4YY
Order tracking
Email or SMS sent by the carrier once your order is dispatched
30-day return window
Returns accepted within 30 days of delivery. You also have a statutory 14-day cancellation right from the date of receipt.
Items must be unused & in original packaging
Returned goods must be uninstalled, unaltered and in the same condition as received.
Installed or cut items cannot be returned
Once tiles or materials have been cut, altered or installed, no return or refund is possible under any circumstances.
How to start a return
Contact us first at info@tileexperience.co.uk or call 0208 689 4187. Send the item back with your name and order number. Return shipping is the customer's responsibility.
Refund to original payment method
Processed within 3–5 working days of us receiving and approving your return.
Original delivery charges are not refunded. If no refund after 15 business days, contact us.
Damaged or incorrect items
Report within 48 hours of receipt. Email info@tileexperience.co.uk with your order number and photos of the damage. Confirmed replacements are sent next working day at no charge.
Non-stocked brands — restocking fee may apply
Returns for Genesis, Marmox and Bihui carry up to a 20% restocking fee. Schluter trims: 35% standard return, 15% if returning with a replacement order.
Cancellations
Cancel before dispatch for a full refund including delivery. Cancel after dispatch by rejecting the delivery — refund for goods only, not the delivery charge.
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