ᐅ Installation of click-lock wood composite tiles on a rooftop terrace

Created on: 5 May 2021 13:28
B
blockholzer
Hello,

I am a bit unsure about installing these click-together tiles.
I live in a new build and would like to create a path on the flat roof terrace (enclosed) using these "click tiles."
The roof terrace is currently covered with classic round natural stones, about 6–7 cm (2.5–3 inches) in size, with a geotextile fabric underneath.

Can I simply move the stones aside and lay the click tiles directly on the fabric, or should I install an additional base layer on top of the fabric?
So far, people have walked directly on the stones that lie on the fabric, so I assume an extra base might not be necessary. However, since I am not sure, I would appreciate advice from the experts. Thank you very much in advance.
B
blockholzer
8 May 2021 17:19
KlaRa schrieb:

Of course, it is up to each individual to decide how to carry out a construction project for which they are responsible.
Here in this forum, we limit our responses to practical experience that offers the highest level of safety in preventing building damage (and thus ensuring the success of a trade).
Using polystyrene boards on a gravel bed combined with a mechanical locking system for a wood-based panel floor is certainly not one of the more promising methods—at least not in the medium term.
So I wish you good luck with the execution of the (quote) "affordable and simple option"!
Regards, KlaRa

I understand that this is not the optimal or standard method, and you might even call it "botched work," but I don’t see what could go seriously wrong here or what might cause building damage...? At worst, the durability would be reduced, or have I missed something?
B
blockholzer
11 May 2021 23:38
I am now considering using XPS boards as the base layer, but the tiles have gaps where sunlight shines through. This shouldn’t be a major issue, but would it be advisable to coat the boards? If so, with what? And is XPS really that "problematic" (environmental impact)?