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ElBoCaDiLlO25 Apr 2018 12:16Hello everyone,
We have a terrace tiled with 40x120cm (16x47 inches) ceramic tiles, which were installed on 8cm (3 inches) of drain mortar over a 30cm (12 inches) gravel base.
At the time, I didn’t know where or how my terrace roof would be placed, so I didn’t set any separate foundations.
Now I would like to build a terrace roof but face two challenges:
1.) My house is a prefabricated timber frame construction, so the terrace roof must be self-supporting.
2.) I would prefer not to place the support posts outside the terrace on the lawn.
I am wondering if the tiles with this substructure can support the load. The terrace is 3.87m (13 feet) wide, then extends forward with a projection 4.61m (15 feet) wide and 1.2m (4 feet) deep, and then steps back to 3.87m (13 feet) wide again.
The terrace itself is designed exactly like this, with a depth of 4m (13 feet) at all points.
The roof should cover the 3.87m (13 feet) + 4.61m (15 feet) width and, of course, the entire depth of the terrace.
I plan to install two support posts at the wall at the back, attach a crossbeam to the house wall on which other beams would rest. The whole structure would be wood, with roofing made of 16mm (5/8 inch) double-wall acrylic glass.
Attached is a simple drawing.
Do you think this will work, or am I risking damage to the tiles?
Best regards
We have a terrace tiled with 40x120cm (16x47 inches) ceramic tiles, which were installed on 8cm (3 inches) of drain mortar over a 30cm (12 inches) gravel base.
At the time, I didn’t know where or how my terrace roof would be placed, so I didn’t set any separate foundations.
Now I would like to build a terrace roof but face two challenges:
1.) My house is a prefabricated timber frame construction, so the terrace roof must be self-supporting.
2.) I would prefer not to place the support posts outside the terrace on the lawn.
I am wondering if the tiles with this substructure can support the load. The terrace is 3.87m (13 feet) wide, then extends forward with a projection 4.61m (15 feet) wide and 1.2m (4 feet) deep, and then steps back to 3.87m (13 feet) wide again.
The terrace itself is designed exactly like this, with a depth of 4m (13 feet) at all points.
The roof should cover the 3.87m (13 feet) + 4.61m (15 feet) width and, of course, the entire depth of the terrace.
I plan to install two support posts at the wall at the back, attach a crossbeam to the house wall on which other beams would rest. The whole structure would be wood, with roofing made of 16mm (5/8 inch) double-wall acrylic glass.
Attached is a simple drawing.
Do you think this will work, or am I risking damage to the tiles?
Best regards
M
meister keks25 Apr 2018 21:39I wouldn’t start experimenting with something like that.
Proper foundations are needed under the supports because you have to consider the significant loads they will bear.
If there is wet snow on top, your canopy could be damaged or even collapse.
You can ask the builder if the canopy can be attached to the house—that was possible in our case.
But for the other supports, a foundation is required underneath.
Is the roof supposed to rest on a tile, 8cm (3 inches) of mortar, and some gravel? No.
Cut out the tiles, remove the mortar, then dig and install the foundation—simple as that.
Proper foundations are needed under the supports because you have to consider the significant loads they will bear.
If there is wet snow on top, your canopy could be damaged or even collapse.
You can ask the builder if the canopy can be attached to the house—that was possible in our case.
But for the other supports, a foundation is required underneath.
Is the roof supposed to rest on a tile, 8cm (3 inches) of mortar, and some gravel? No.
Cut out the tiles, remove the mortar, then dig and install the foundation—simple as that.
ElBoCaDiLlO schrieb:
1.) My house is a prefabricated timber frame building, so the patio roof has to be self-supportingWhy does the timber frame construction require the patio roof to be self-supporting? Our house also has a timber frame, and our patio roof will be attached at the level of the intermediate ceiling where there is always a thick beam anyway. It doesn’t get any easier than that.
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ElBoCaDiLlO26 Apr 2018 07:49Hello, this is what my builder said. Back then, a reinforcement for the awning should have been installed to make it hold, but basically, you’re right. However, it’s quite a long distance up to the ceiling, isn’t it? I would need to check if the height fits and will get back in touch with my builder.
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ElBoCaDiLlO26 Apr 2018 08:01Exactly, it’s about the vertical height and whether I can still get past the roof overhang and the gutter, but I don’t think that should be a problem. The height should be around 281cm (110.8 inches) from the outside, but I should be able to verify that from the drawing, which I hopefully will receive soon.
Still, I have to go away from the house into the tile area or onto the tiles, but I think it makes sense to actually cut out a section there and then dig down. Is the width of the foundation relevant, or can I cut out a 15x15cm (6x6 inch) section and then somehow drill into it to remove the material down to 60-80cm (24-31 inches)?
Still, I have to go away from the house into the tile area or onto the tiles, but I think it makes sense to actually cut out a section there and then dig down. Is the width of the foundation relevant, or can I cut out a 15x15cm (6x6 inch) section and then somehow drill into it to remove the material down to 60-80cm (24-31 inches)?
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