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. Because of the length of these boards, we offer a Click and Collect service only on Marmox Long Tile Backer Boards.
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 The London Tile Co we stock the standard Marmox Multiboards in 2500mm x 600mm in thicknesses ranging from 10mm up to 12.5mm.
Features and Benefits of Marmox Multiboards
Please note:This item is currently a click & collect only product due to the length of the boards. Please click the Click & Collect tab for more information.
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.
Click the links below to see the technical specifications and user guides for this product.
- Click here to see Internal & External Tile Backer Board Specifications
- Click here to see Internal Plastering & External Rendering of Insulation Board Specifications
- Click here to see Multiboard Fitting Instructions
- Click here to see the Marmox Multiboard Declaration of Performance (UK)
- Click here to see the Marmox Multiboard Declaration of Performance (EU)
- Click here to see information on Insulating with Marmox Multiboard
- Click here to see the Marmox Multiboard Data Sheet
- Click here to see the Marmox Brochure with Fitting Instructions
- Click here to see the Marmox Multiboard BBA Certificate
- Click here to see the Marmox Multiboard Guarantee for Goods
- Click here to see the Marmox Multiboard Safety Data Sheet
These are long length boards - making them longer than a standard pallet. Because of this, all long length boards are currently available for a click & collect in-store pickup service. Click & Collect orders are placed online as normal, and you can choose your pickup location at the checkout.
Delivery Options
If you can't get into a branch or want this item delivered to you, it may still be possible. You can contact The London Tile Company on 0333 320 80 48 to talk about a bespoke delivery service for these products on an extra long-length pallet.
