Menu
Menu
Your Cart

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)
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)
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: £41.65 (£49.98 inc VAT)
  • Product Code: A1-5431
  • Delivery Time: 1-3 working days
  • Brand: Marmox
  • (Tech. support: : 01634835290)
  • Model and Size: 300mm x 400mm
Our ratings on 08-10-2025:
Google My Business Reviews
4.8 out of 5
Show other sizes

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.

      

Brand: Marmox Model and Size: 600mm x 1250mm - 144m2 - Free Delivery
Delivery Time: 1-3 working days
10mm Marmox Tile Backer Board is a waterproof board for use as a sturdy foundation for tile installation in bathrooms, wet rooms and kitchens. Its flat, even surface can bear significantly more weight (up to 200kg per m2) than a typical plastered wall. They provide a reliable and waterproof bas..
£909.97
£1,091.96 inc VAT
Add to Cart
Brand: Marmox Model and Size: 290ml
Delivery Time: 2 - 3 working days
290ml Marmox MSP360 Premium Adhesive and Sealant is an ultra strong adhesive, ideal for sealing around shower trays, baths, bathroom fittings, kitchen fittings and furniture - for use with almost any material. Marmox MSP360 is an odourless adhesive thatch be painted. It has excellent adhesion t..
£7.08
£8.50 inc VAT
Add to Cart
Brand: Marmox Model and Size: 1200mm x 600mm - 0.72m2
Delivery Time: 1-3 working days
50mm Marmox Fireboard is a lightweight, A1-rated non-combustible insulation board that combines fire protection, thermal insulation, and acoustic performance in one render-ready panel. It’s suitable for internal and external walls and ceilings, especially in high-risk or multi-storey buildings.CHAR..
£31.27
£37.52 inc VAT
Add to Cart
Brand: Marmox Model and Size: 1200mm x 600mm - 2.16m2
Delivery Time: 2 - 4 days
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..
£38.70
£46.44 inc VAT
Add to Cart
Brand: Marmox Model and Size: 36mm - 500nos
Delivery Time: 2 - 3 working days
36mm Marmox Metal Washers used for fixing Marmox Multiboard is used for fixing Marmox Multiboard, when used with appropriate corrosion resistant screws, these washers grip tightly and become virtually flush with the surface. The diameter of the hole in the Marmox metal washer is 6mm wide. ..
£36.80
£44.16 inc VAT
Add to Cart
Brand: Marmox Model and Size: 2400mm x 1200mm - 115.20m2
Delivery Time: 2 - 3 working days
20mm 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..
£1,656.00
£1,987.20 inc VAT
Add to Cart

Related Products

Brand: Marmox Model and Size: 100mm x 10m
Delivery Time: 3 - 5 days
100 Marmox Self-adhesive Waterproof Tape used to create a permanent waterproof seal around shower formers and the adjoining floor, the wall ..
£30.44
£36.53 inc VAT
Add to Cart
Brand: Marmox Model and Size: 290ml
Delivery Time: 2 - 3 working days
290ml Marmox MSP360 Premium Adhesive and Sealant is an ultra strong adhesive, ideal for sealing around shower trays, baths, bathroom fittings, ki..
£7.08
£8.50 inc VAT
Add to Cart
This product is listed in the following categories and systems (click to show).