Marmox Multiboard Tile Backer Board (1250mm x 600mm)

  • Waterproofing, dry lining & a barrier against damp
  • High performance load bearing - 40 tonnes/m²
  • Thermal insulation for walls, floors and ceilings
  • Reduces acoustics and impact sound by 25 dB
  • Easy to work with & cut to size with a working knife
£8.34 Inc. VAT
£6.95 Ex. VAT

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The original Marmox Multiboard is ideal for a variety of applications, which is why it’s one of the leading boards on the market today. Multiboards have a wide range of uses from waterproofing walls and floors to providing thermal insulation and dry lining. When used in bathrooms you get a tile backer board, waterproofing, and insulation all in one easy to install board! Marmox Multiboards are also used as insulation boards and are the easiest solution for insulating and waterproofing a room in one quick and easy install.

Made from reinforced high performance extruded polystyrene, each side of the waterproof board is faced with fibreglass mesh embedded into a cement polymer mortar. This rigid construction makes these boards perfect to use on the floor with underfloor heating wire systems. Using Multiboards in this scenario improves the efficiency and reduces your heating costs. These boards are also used as tile backer boards because they act as an effective and easy to work with decoupling layer. As the Marmox Multiboard is safely and securely fixed to walls and floors, it forms a barrier between them and your tiles. This helps to prevent tiles and grout cracking due to horizontal movement.

We routinely see Multiboards used as waterproof tile backer boards, electric underfloor heating insulation and in wet room construction. They can also used for dry lining and insulation of cellars and loft conversions, as well as rigid partition wall boarding too. Here at Tile Fix Direct we stock the standard Marmox Multiboards in 1250mm x 600mm in thicknesses ranging from 4mm up to 50mm.

Features and Benefits of Marmox Multiboards

  • Waterproofing, dry lining & a barrier against damp
  • Thermal insulation for walls, floors and ceilings
  • Reduces acoustics and impact sound by 25 decibels
  • High performance load bearing - 40 tonnes/m²
  • Decoupling layer board with high flexural strength
  • CFC & HCFC & Asbestos free keeping you safe
  • Easy to work with and cut to size with a working knife
  • Unaffected by freeze/thaw cycle
   

How to install Marmox Multiboards on a timber frame.

Preparation: For a stud wall build with 600mm centres, use 20mm Marmox Multiboard or thicker. 10mm and 12.5mm thick boards require studs at 300mm centres. All board edges should be supported.

Fixing:Use a tile backer board screws and washers every 300mm on each stud. The washers prevent pitting in the board surface. When a stud is at 600mm centres, use 20 rows of 5 fixings. At 300mm centres, use 3 rows of 5 fixings.

Tiling: Be sure to tape all the joints with Marmox Reinforcing scrim tape, except in wet areas where Marmox Self-Adhesive Waterproof tape should be used. The boards are now ready to be tiled.

Plastering: Seal boards together using a bead of Multibond prior to scrim-taping, do not use Waterproof tape under plaster. The boards are now ready to be plastered.

How to install Marmox Multiboards on a solid wall - screw fixed

Preparation: Measure Marmox Multiboards and cut to size. Tile backer boards are very easy to cut with a knife or saw.

Fixing:Marmox Multiboards can be fixed to solid wall with screws and washers at every 300mm. Alternatively use Tile Backer Board Fixing Dowels for ease.

Tiling: Be sure to tape all the joints with Marmox Reinforcing scrim tape, except in wet areas where Marmox Self-Adhesive Waterproof tape should be used. The boards are now ready to be tiled.

Plastering: Seal boards together using a bead of Multibond prior to scrim-taping, do not use Waterproof tape under plaster. The boards are now ready to be plastered.

How to install Marmox Multiboards on a solid wall - adhesive fixed

Preparation: Measure Marmox Multiboards and cut to size. Tile backer boards are very easy to cut with a knife or saw.

Fixing: Use a 6/8mm trowel to comb adhesive over the who surface of the Marmox Multiboard. For uneven walls increase to a 20mm trowel. Push firmly onto wall. Ideally stagger the joints if you can.

Tiling: Be sure to tape all the joints with Marmox Reinforcing scrim tape, except in wet areas where Marmox Self-Adhesive Waterproof tape should be used. The boards are now ready to be tiled.

Plastering: Seal boards together using a bead of Multibond prior to scrim-taping, do not use Waterproof tape under plaster. The boards are now ready to be plastered.

How to install Marmox Multiboards on a solid wall - dot & dab fixed

Preparation: Create 5 fixing holes through the Marmox Multiboard. 12.5mm board thickness is the minimum thickness for this fixing method.

Fixing: Put a dab of tile adhesive over the holes positions. Offer the board up to the wall, push firmly, and then use a spirit level to get everything level. Once your tile adhesive has dried, drill the holes out. Place the dowl in through the board into the wall and then hammer in the pin.

Tiling: Be sure to tape all the joints with Marmox Reinforcing scrim tape, except in wet areas where Marmox Self-Adhesive Waterproof tape should be used. The boards are now ready to be tiled.

Plastering: Seal boards together using a bead of Multibond prior to scrim-taping, do not use Waterproof tape under plaster. The boards are now ready to be plastered.

How to install Marmox Multiboards on floors - screw fixed

Preparation: Lay your boards out on the floor and cut them to size easily using a blade or saw.

Fixing: For screw fixing use a screw and washer at every 300mm.

Tiling: Be sure to tape all the joints with Marmox Reinforcing scrim tape, except in wet areas where Marmox Self-Adhesive Waterproof tape should be used. The boards are now ready to be tiled.

Plastering: Seal boards together using a bead of Multibond prior to scrim-taping, do not use Waterproof tape under plaster. The boards are now ready to be plastered.

How to install Marmox Multiboards on floors - adhesive fixed

Preparation: Use a floor trowel to comb the adhesive onto the floor.

Fixing: Lay the Marmox Multiboard down onto the adhesive and push firmly. You can use Marmox Multibond for further waterproofing or in really wet areas use Marmox Self Adhesive Waterproof Tape.

Tiling: Be sure to tape all the joints with Marmox Reinforcing scrim tape, except in wet areas where Marmox Self-Adhesive Waterproof tape should be used. The boards are now ready to be tiled.

Plastering: Seal boards together using a bead of Multibond prior to scrim-taping, do not use Waterproof tape under plaster. The boards are now ready to be plastered.

Delivery times are Monday - Friday (excluding Bank Holidays) from 7:30am - 6:00pm. Most deliveries leave on Express Delivery for 1 - 3 working day delivery service. A 'working day' is Monday to Friday, excluding bank holidays. Weekends and bank holidays do not count as working days.

FREE 1-3 working day delivery service for all orders over £250 (excluding VAT). See Delivery page for further details.

Click & Collect

We offer a free Click & Collect service on all stocked items at our main warehouse. Click and Collect orders are available for collection from 08:30am to 16:00pm Monday to Friday. Please allow 2 hours from your order to when you come and collect. Please wait for and bring your order confirmation paperwork with you. Collection address is Tile Fix Direct, Unit 1 Hollybush Lane, Ash Vale, GU11 2PX.

Delivery Damages

It's important that you indicate the damages on the delivery note when you sign for the goods. Notify Tile Fix Direct by emailing us or calling our advice line on 0333 320 04 24 if there are any damages or irregularities to your order within 24 hours of delivery.

What our customers say

Posted by Andrew Richards on 6th Apr 2022

This is an OK product, but not my favourite. A cross between the cement-based boards (Hardibacker etc) and the lightweight XPS cored products such as Schlueter, Wedi, Orbry etc which are less messy to handle. Takes adhesive very well, but extra care needed to get waterproofing glue fully into the depressions. Package arrived with damage to one corner, but managed to work round it.

Posted by Philip on 1st Dec 2021

Handy appears only Marmox manufacturer a 4 mm option

Posted by Chris Senner on 22nd Nov 2021

Insulation boards and ancillaries ordered on Friday and delivered on Tuesday. I asked for the delivery driver to call me before delivery which was done. Excellent service, everything checked out and I would definitely use Tilefix again.

Posted by Ian Chapman on 7th Oct 2021

First class service again. Ordered on Monday and arrived Wednesday even in the fuel shortage. Thanks very much!

Delivery

Delivery times are Monday - Friday (excluding Bank Holidays) from 7:30am - 6:00pm. Most deliveries leave on Express Delivery for 1 - 3 working day delivery service. A 'working day' is Monday to Friday, excluding bank holidays. Weekends and bank holidays do not count as working days.

FREE 1-3 working day delivery service for all orders over £250 (excluding VAT). See Delivery page for further details.

Click & Collect

We offer a free Click & Collect service on all stocked items at our main warehouse. Click and Collect orders are available for collection from 08:30am to 16:00pm Monday to Friday. Please allow 2 hours from your order to when you come and collect. Please wait for and bring your order confirmation paperwork with you. Collection address is Tile Fix Direct, Unit 1 Hollybush Lane, Ash Vale, GU11 2PX.

Delivery Damages

It's important that you indicate the damages on the delivery note when you sign for the goods. Notify Tile Fix Direct by emailing us or calling our advice line on 0333 320 04 24 if there are any damages or irregularities to your order within 24 hours of delivery.

£8.34 Inc. VAT
£6.95 Ex. VAT

In Stock

Adding to basket... The item has been added
Bulk Discount

What our customers say

Posted by Andrew Richards on 6th Apr 2022

This is an OK product, but not my favourite. A cross between the cement-based boards (Hardibacker etc) and the lightweight XPS cored products such as Schlueter, Wedi, Orbry etc which are less messy to handle. Takes adhesive very well, but extra care needed to get waterproofing glue fully into the depressions. Package arrived with damage to one corner, but managed to work round it.

Posted by Philip on 1st Dec 2021

Handy appears only Marmox manufacturer a 4 mm option

Posted by Chris Senner on 22nd Nov 2021

Insulation boards and ancillaries ordered on Friday and delivered on Tuesday. I asked for the delivery driver to call me before delivery which was done. Excellent service, everything checked out and I would definitely use Tilefix again.

Posted by Ian Chapman on 7th Oct 2021

First class service again. Ordered on Monday and arrived Wednesday even in the fuel shortage. Thanks very much!

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