Membrane deck nightmares and critical information you need to know
Constantly we see improvised design solutions for decking or tiles over waterproof membrane surfaces. Unfortunately, these solutions don't last, and more often than not its contributed to incorrect installation.
Here is an example of a membrane deck that didn't have enough room to breathe.
As can be seen because of no ventilation, the joists and decking boards started to absorb moister. This leads to root and extreme mildew growth. Not a pretty picture at all.
We have summarised the pros and cons of various installation scenarios as well as the council requirements for decking over a waterproof membrane.
So if you're considering replacing or building a new deck over membrane you can find all the information you need in this