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?
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?
I can't imagine it would work; it might hold up initially if walked on very carefully. But definitely not in the long term. You would need to install a large number of pedestals, and even then, a dropped glass bottle could easily cause breakage. I would only install 8mm (about 0.3 inches) porcelain stoneware on a solid substrate.
There are ceramic tiles available that can be installed on pedestals at 2cm (about 0.8 inches) thickness, but 8mm (about 0.3 inches) porcelain stoneware is probably too thin.
There are ceramic tiles available that can be installed on pedestals at 2cm (about 0.8 inches) thickness, but 8mm (about 0.3 inches) porcelain stoneware is probably too thin.
I should have just left the exposed aggregate concrete slabs as they were.
I agree, 8mm (0.3 inches) also seems too thin for the load.
On top of that, the annoying roof or the waterproofing membranes don’t have a proper slope, so rainwater collects between the waves. It seems there isn’t really any leveling compound for waterproofing membranes either... haha
I agree, 8mm (0.3 inches) also seems too thin for the load.
On top of that, the annoying roof or the waterproofing membranes don’t have a proper slope, so rainwater collects between the waves. It seems there isn’t really any leveling compound for waterproofing membranes either... haha
It's me again. We have now decided on WPC decking boards. The boards along with the substructure have already been ordered. Now I have the following question:
I want / need to place the substructure on pedestal supports. Since I don't want to screw the pedestals through the waterproof membrane (to avoid leaks), I plan to glue them with bitumen adhesive.
The decking boards should be raised by a total of 12cm (5 inches). Now I need to create a slope (because the garage roof does not allow complete water drainage). A 2% slope means that at the house side, the pedestals need to be about 7cm (3 inches) high and at the far end of the roof about 1cm (0.4 inches) high.
Should I order the required number of pedestals in different heights? While searching, I found "slope compensation shims" for the pedestals... do I also need these? Or what purpose do these shims serve?
I want / need to place the substructure on pedestal supports. Since I don't want to screw the pedestals through the waterproof membrane (to avoid leaks), I plan to glue them with bitumen adhesive.
The decking boards should be raised by a total of 12cm (5 inches). Now I need to create a slope (because the garage roof does not allow complete water drainage). A 2% slope means that at the house side, the pedestals need to be about 7cm (3 inches) high and at the far end of the roof about 1cm (0.4 inches) high.
Should I order the required number of pedestals in different heights? While searching, I found "slope compensation shims" for the pedestals... do I also need these? Or what purpose do these shims serve?
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