How to Deal With Straw Board Wall? Ask your questions and find answers on many subjects relating to plastering and dry lining

[desparate_diy-er]

I have removed tiles in my en-suite and discovered the inner wall is full of straw. I want to repair the wall and re-tile it. do i need any special plaster? or special procedures so the tiles stay up! I do not want to use backer board if i can avoid it as it will add too much to the thickness of the wall