ThermaSheet Wall Niches

Our prefabricated niches are perfect for storing and displaying items, and are especially useful in showers, bathrooms and wet rooms.

Manufactured from a one-piece construction high density polystyrene core, with a liquid applied waterproof sealant that provides a ready-made waterproof substrate, our niches are versatile, easy to install and ready to tile in minutes. Guaranteed never to rot, degrade or leak, the ThermaSheet Wall Niche is perfect for those bath and shower necessities to be in exactly the position you choose.

View our ThermaNiche Brochure

ThermaSheet Wall Niche advantages.

Tile Ready Service

Provides a perfect base on which to apply finishes such as tiles, synthetic renders, decorative plaster and much more. With the tile ready surface it makes construction projects easier.


Resistant to water making ThermaNiche ideal for use in areas that are subject to prolonged or permanent water immersion. Uses include, wetrooms, showers, external walls, balconies and patios, garden water features etc.


The boards are extremely lightweight and easy to manoeuvre, making projects less demanding and saving time on the job as a whole.

Internal - External Use

Given its waterproofing and insulation properties, ThermaNiche is particularly useful in both internal and external wet areas exposed to moisture.

High Compressive Strength

More strength thanks to the extra bond between the cement mortar and the reinforcing fiber glass mesh Compressive strength rate 300k/Pa (30 tonnes/m2)

Cuts Easily

Can be cut easily using a sharp Stanley knife or a fine saw

ECO Friendly

Thermaboard is environmentally friendly, it is CFC and HCFC free.

Render + Plaster Ready Service

This rigid foam core is reinforced on both sides with a fibreglass mesh, plus a top layer of polymerised cementitious mortar, making it an ideal surface for tile adhesive and render.

ThermaSHeet  Wall Niche Range

Code Product Name Dimensions  
RSN01 Wall Niche 355mm x 355mm x 90mm Niche 355mm x 355mm
RSN02 Wall Niche 365mm x 425mm x 90mm Niche 365mm x 425mm
RSN03 Wall Niche 355mm x 605mm x 90mm Niche 355mm x 605mm
RSN04 Wall Niche 260mm x 905mm x 90mm Niche 260mm x 905mm
RSN05 Wall Niche 355mm x 355mm x 70mm Niche 355mm x 355mm
RSN06 Wall Niche 365mm x 425mm x 70mm Niche 365mm x 425mm
RSN07 Wall Niche 355mm x 605mm x 70mm Niche 355mm x 605mm
RSN08 Wall Niche 260mm x 905mm x 70mm Niche 260mm x 905mm
RSN10 Wall Niche 355mm x 1000mm x 90mm Niche 355mm x 1000mm
RSN11 Wall Niche 550mm x 1000mm x 90mm Niche 550mm x 1000mm

ThermaSheet  Wall Niche Technical Information

Property Assessed To Rating
XPS Density DIN 53420 36 +/- 0.02 kg/m3
Thermal Conductivity EN 12167 0.033 W/m.K
Compressive Strength (10% deflection) EN 826 300 k/Pa (30 tonnes/m2)
Flexural Strength ASTM C203 0.30 +/- 0.02 MPa
Water Absorption (2-day immersion) ISO 2896 0.2% by volume
Water Absorption (Capillary) DIN 53428 Zero
Water Vapour Diffusion Resistivity (μ) DIN 52615 110 - 225 (μ)
Water Vapour Permeability ASTM E-96 0.028 ng/Pa.m.s
Maximum Tile Loading Weight CERAM 121107 60kg/m2
Flammability EN 13501 Class E
Impact Sound Reduction BS-ISO140 dLw=21
EU Controlled Substances Content N/A None