ᐅ Idea for Terrace Flooring on Garage Roof – Roofing Felt

Created on: 14 May 2018 14:44
3
30156030
Hey everyone,

So far, we had exposed concrete pavers on our terrace (garage roof). I recently removed them all. The roof is now "bare," meaning just roofing felt. Of course, it’s not perfectly flat but has some waves.

Now we’re considering what surface to use for the terrace. At first, I thought about those 30 x 30cm (12 x 12 inches) wood-look tiles, but since these require a flat substrate, they’re not an option.

Next idea: porcelain stoneware slabs on adjustable pedestals. Question: If I choose 60 x 40cm (24 x 16 inches) porcelain stoneware, how thick do they need to be at minimum so they can be supported by pedestals without breaking?

Or do you have any simple and cost-effective suggestions?
3
30156030
22 Jun 2018 11:45
To put it bluntly, it looks like this in the photo.
Does a slope of about 2% (4m (13 feet) length) really have such a drastic effect?

Skizze eines Bodenaufbaus mit Diele, Unterkonstruktion und Lagerstützen
A
Alex85
22 Jun 2018 14:34
30156030 schrieb:
Does a slope of about 2% (4m length) really have such a drastic effect?

No.

2% over 4m (13 feet) equals 8cm (3 inches).

The slope in the sketch is probably around 20-25% (does anyone have a protractor?).
3
30156030
5 Jul 2018 11:06
I need to follow up on this... Do you have any ideas on the best way to fasten the pedestals to the waterproof membranes? Screwing them in is not an option, as it would cause leaks in the roof. I was thinking about using adhesive... Does anyone have a recommendation for a good and suitable adhesive?