Do it Building Board NXT
Description
The Do it Building Board NXT is a lightweight, waterproof and highly versatile substrate panel with a reXPS rigid foam core, coated on both sides with mortar, designed for indoor use. For the reXPS rigid foam core of the Do it Building Board NXT, recovered and recycled polystyrene is used. The environmentally friendly Do it Building Board NXT can be installed on almost all load-bearing substrates.
Product features:
- Substrate material made from recycled XPS
- Fast application
- Easy, flexible cutting
- Stable and waterproof
- Flexible design options
- Thermal insulating
- No primer required before tiling.
Application:
- Substrate for tile coverings and skim coat applications in dry and wet areas such as bathrooms or wellness facilities.
- Levelling of uneven wall and floor surfaces in new and existing buildings.
- Construction of partition walls on stud framing.
- Custom design of vanity supports and pre-wall constructions.
- Custom cladding for bathtubs and pipework.
| Panel size Panel thickness | ||||
| 120 x 60 cm | 6 mm | 10 mm | 20 mm | 30 mm |
Notes
The substrate must be in the following condition:
- dry and clean
- viable
- free from grease, laitance, release agents and loose particles
- Prime absorbent substrates with Ultrament Bonding Primer (diluted with water).
- Prime non-absorbent substrates, wooden substrates and existing tile coverings with Ultrament Bonding Primer (undiluted).
Downloads

Ultrament Flexible Adhesive S1
Ultrament Flexible Adhesive S1 is a CO₂- and dust-reduced flexible thin-bed adhesive.

Ultrament Mounting Plate
Ultrament Mounting Plate is ideal for fixing the screw connections of the Ultrament Do it Building Board NXT to the substructure.

Ultrament Hammer Fixing Plug
Ultrament Hammer Fixing Plugs are ideal for fastening and securing the Ultrament Do it Building Board NXT.


