Hello!
Now that summer is approaching, it's time to rebuild the sunroom, which is currently a really poor construction that both leaks water and may collapse if too much snow falls, if it weren't for three support braces in the room that I recently put up. (Newly purchased house)

We are considering raising the floor by about two decimeters, and naturally, the roof will need to be raised as well. However, the current slope is already poor, so I was thinking of a solution like this:

Remove the bottom row or two of tiles and place the beams for the new sunroom on the house's roof trusses. Then, of course, add boarding on the sunroom and place a new tar paper strip on the house roof that extends over the sunroom to create a sealed "joint." Then, overlay the current bottom row of concrete tiles on the metal roof that will be over the sunroom.

Is this a proper construction, and since there's already a roof that has been there for a few winters, it should hold for this. Or will there be more load on the house's studs, etc., if done this way? Is there a better method? Money is not the most important factor; I'd rather it be done properly and hold up well than save 10,000 - 20,000.

I'm not very good at describing, so I hope you understand; otherwise, feel free to ask what I mean :P
 
  • A black wooden sunroom with blue window frames, adjacent to a patio with white outdoor furniture.
I don't quite understand what the corner looks like at the moment, there seems to be a roof to the right in the picture and another straight ahead, beyond the conservatory (which is the roof you're considering removing two rows of tiles from, I assume). But what does the corner look like, as I said, is there a valley gutter there today, or some other solution? Is it possible to raise the conservatory roof as you've planned then?
 
Hello b8q!
Yes, where the two roofs meet, there's a valley gutter that's 4 meters; it will be a bit of an exposed area due to the elevation of the roof.
But it should be solvable with a well-formed sheet metal. I have an uncle who is a sheet metal worker, so I'll check with him if it can be resolved. But I thought I'd first see if my idea can be properly executed.
I'm attaching a Paint drawing of how it looks and a picture of the valley gutter when I redid the slope and sheet metal last summer.
 
  • Roof valley with newly installed sheet metal and visible roof tiles; some construction materials are seen, including coiled rope on the left.
  • Diagram of two intersecting roofs showing a 4-meter valley between them, labeled with "ränn dal" and "uterum.
If the valley gutter runs "to the right" then it should probably be solvable, but what are the dimensions of the roof trusses and framework in the house? (If it's not too flimsy, I don't think you need to worry, but don't take my words as absolute truth, I'm not a constructor).
 
In addition to having the same thoughts on roof drainage as b8q, it sounds like a good construction.

If your rafters for the terrace reach so far up on the roof that the pressure isn't over the outer wall, place wedges so that the force can go directly into the outer wall.
 
Unfortunately, I don't know what kind of trusses they are, but the outer walls are, if I'm not mistaken, 45x95. Yep, the drainage goes to the right in the picture. It used to go the other way before I rebuilt it, so now it doesn't leak in as much :D. Lucky I'm going to tear it down soon...
 
In the worst case, maybe one can support the roof trusses of the conservatory with 90x90 or 115x115 posts inside against the house to relieve some of the load? Maybe it's safest? It probably won't look bad either. There will still be at least one 90x90 post inside against one house wall since I plan to have it glazed.
 
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