There is an additional caveat, and that is that building permit-exempt canopy roofs must have their support in the facade. Sigh!
(will investigate further what this exactly means. Perhaps the facade can be considered supportive because it takes shear force if connected with some angles (or if the bearer is recessed into the eaves) even though it stands on three pillars at the back.
I think the screen roof should either start under or over the protruding roof. A screen roof with a steep slope that with its upper part lies over the current outer roof could look pretty cool. You can always anchor the inner pillars in the wall. It also gives you more flexibility if you want to enlarge the screen roof. If you want me to check the deflection, you'll need to provide the plan and section.
Why not on the eaves or extend the eaves, at least visually.
I don't think that would look very nice. The roof's overhang is a very distinct design element. Better to let the screen roof start at a height above the roof edge. If I had time, I would have drawn a sketch, but I don't have that right now.
I would really appreciate a sketch because I can't see how it would look nice at all.
So you mean a canopy with an extension "backward" over the existing roof. The pillars would have to stand outside the existing roof. I'm not very keen on making modifications to the existing roofing felt.
Are you thinking of an overhang on the screen and pillars outside the current overhang? I'm having a hard time seeing how I would achieve what you've drawn.
You can do pretty much as you like. I'm thinking of light steel brackets attached to the eaves. No pillars. Clear glass or polycarbonate as the material. With enough slant, you don't have to worry much about snow.
If the glulam beam is unspliced over the three columns, you have very large margins on your side. A light awning with a substantial slope that's not too deep becomes almost negligible. You have truss roof trusses, right?
They are homemade beams made of plywood, like Kerto beams and not trusses. The beam is unspliced.
The thing is, in the best of worlds, I would like to build a proper patio roof, perhaps 7x2.2m, without posts, but then my beam must be able to handle it.
It's your house, do what you think is best. I believe the beam over the sliding windows can handle it. It's always a problem with patio roofs when the facade is low and limited.
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