Painting wall before replastering/rendering

FreeBear

stuart45 said:

You can use something like a Tiffin air drain. Not cheap at £100 a metre though.

On another forum, the Zebcolm Trench has quite a few advocates. Although, if you are paying a builder to do the work, I suspect it would cost just as much as a Tiffin.

GDB2222

stuart45 said:

You can use something like a Tiffin air drain. Not cheap at £100 a metre though.

Thanks. I wasn’t aware that even existed.