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12.5mm Marmox Shower Niche - 300mm x 400mm (External size - 400mm x 500mm)

12.5mm Marmox Shower Niche - 300mm x 400mm (External size - 400mm x 500mm)
Price: £45.82 (£54.98 inc VAT)
  • Product Code: A1-5431
  • Delivery Time: 1-3 working days
  • Brand: Marmox
  • (Tech. support: 01634835290)
  • Model: 300mm x 400mm
Our ratings on 22-05-2026:
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12.5mm Marmox Shower Niche - 300mm x 400mm (External size - 400mm x 500mm)

Length: 400mm
Width: 300mm
Thickness: 12.5mm

Marmox Shower Niche is comprised of an extruded polystyrene core coated on either side with a thin but robust layer of fibreglass reinforced polymer concrete. It is an elegant way to provide extra space for small shower items. Marmox Shower Niche is fixed to the wall usually on a frame, so that the front lip of the niche is flush with the Marmox Multiboard on the wall. The joints between the shower niche and the Multiboard are sealed together with Marmox Waterproof Tape.

CHARACTERISTICS

  • Made with 12.5mm thick board and fit wall cavities 100mm or deeper,
  • Ready to use, with guaranteed conformity and the size,
  • Ready to tile,
  • Lightweight and easy to work with,
  • Completely waterproof,
  • Provides thermal insulation,
  • With practical benefits and elegant appearance,
  • Fits cavity 100mm or deeper.

INSTALLATION

  • Slide the shelf into the desired position.
  • Use a pencil and mark a straight line to indicate the final shelf position.
  • Screw through the sides of the niche in the areas that are in line with the shelf 
  • Make sure shower niche is screwed fully into the shelf but do not over tighten.
  • For a watertight seal, use Marmox MSP360 Adhesive & Sealant’ or Marmox Waterproofing Tape.
  • Position the niche into the desired area, between the studs (at 800 centres).
  • Use a minimum of a 50mm screw and large washer in all of the corners.

      

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40mm Marmox Multiboard Waterproof Insulation Board is a highly versatile, BBA-certified construction board designed for a multitude of applications, combining superior water resistance, thermal insulation, and structural strength. Manufactured from XPS (extruded polystyrene) foam, which is then rein..
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Brand: Marmox Model: 400mm x 200mm x 1250mm
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400mm x 200mm Marmox Pipe Boxing is a completely waterproof material for use to cover exposed piping in bathrooms, wet rooms and kitchens. They come as standard in 1.25m lengths and can be placed on top of one another for full height. They are easy to cut with a knife or saw and can be cut in straig..
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Brand: Marmox Model: Corkscrew Fixings
Delivery Time: 1-3 working days
Marmox Corkscrew Fixings are specialist mechanical fixings designed for securing Marmox Multiboard and other lightweight construction boards to solid substrates such as masonry, brick, blockwork and concrete. Their unique corkscrew‑shaped body allows them to cut cleanly into the surface without..
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Brand: Marmox Model: 90mm - box of 200
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90mm Marmox Fixing Dowels are specialist, high-strength plastic anchors designed primarily for the mechanical fastening of Marmox Multiboard Boards and other construction boards to solid masonry substrates. The system is a two-part fixing, comprising a plastic dowel body with a wide, 50mm diameter h..
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