Delta board is an AVIA approved board and sits in our Advanced Construction Systems range. This is a thermal construction board which is perfect for siding an external building such as an extension, garden building, or summer house. 1200x600x20 this is also a tile back board. Our fitters also use this a bath panel and then tile it. The area of 1 board is 0.72m2. 

Waterproof 
Heavy duty
Available in 6-20mm
Multipurpose use
For use with underfloor heating 
Tile backer board
Render backer board
Plaster backer board