No More Ply Boards

[JR]

John , as a joiner , would OSB board/sterling board be a better solution , I believe a lot of building sites use as external cladding ( and boundary fence ) before buildings are watertight.

Hi Gary .
Osb,. Its not a bad idea , would be ok from the water resistant point of view, and the side with dimples on would make a great key . It's rather awkward to get a good fixing into edge wise , but gluing would be ok for edging with out the need for any mechanical help . I certainly wouldn't use anything thinner than 18 mm , though a smaller size is not going to take a lot of weight so might be ok when used as a base.
Luckily for me I have access still to my old workshop and the store of ply of cuts etc .
John .

[JR]

The shower walling that has been mentioned is a cement based product used with none corrosive screws to allow tiling on a plastered wall . It's heavy and a sod awarkward to to cut ,again a mask is required. If you want to blunt your hand saw probably the best thing to use :smiling::smiling::smiling: sizes and thickness about a mtr square board in two sizes of thickness. Chances of fitting a nice edge about nil ! Unless glued with a tube adhesive like no more nails , the original one .
John .