Hello!
We are going to build a house and have finally reached something we really like with the help of an architect. The concept is partly based on several pergola constructions that create outdoor rooms, function as sun shading, and skeletons for greenery. But - how do we best construct this?
Part A: free-hanging pergola roof, our biggest challenge. The vision is to skip columns and have the roof cantilever out. This section of the house is lower, allowing the beams to be placed at eaves height. How do we solve this? The house manufacturer is skeptical about letting the roof trusses continue out unprotected and does not want pressure-treated wood inside the house, which sounds like reasonable objections. Heavy-duty joist hangers behind the panel? Steel? What ideas do we have?
Part B: outside the living room, a pergola walkway is supported by columns. Here, we will eventually lay plastic/glass on top of 45x45 battens for weather protection. How is it best to attach to the facade?
Part C: freestanding pergola, a little higher. Same principle with glass/plastic on battens that slope, water drains down to part A. The construction feels straightforward, regular pergola.
Why doesn't the architect draw a sensible proposal?
My architect designed a frame structure along the house, a sturdy one along the south side where I have a couple of canvas canopies and a glass roof, and a narrower one on the north side, both shifted along the house's body. However, I haven't filled them with climbing plants as I don't think it suits my house. But skilled architects have an eye for aesthetics!
The architect has designed a good proposal, I think, but we haven't received a detailed technical solution. She said that she has previously designed well-functioning solutions with pergola roofs that cantilever without columns, but the house manufacturer we are discussing with did not, for example, want to let the roof truss continue out. In that case, we ourselves have to install a rule in connection to this. So, I am looking for the technical solution.
Don't you have any sections that one can take a look at where you can see how the pergola roof relates to, for example, the roof truss?
Absolutely! I tried to draw one along with an explanation. I don't have construction drawings yet but based it on another section and adapted it to this lower building body, you can see how the roof and pergola roof should align. I lack good drawings for the pergola for this part but the architect's idea was that the roof continues at the same level from the higher part so this should match.
Flat screen roofs should, in my opinion, be integrated with the roof structure/joists to look nice. Otherwise, brackets or pillars remain.
I can imagine that, but I haven't seen good examples, do you have any off the top of your head? How do you solve it to be moisture-proof when it's an "open screen roof" like a pergola roof? The house manufacturer is afraid that we will bring in moisture and does not want to take responsibility for roof trusses that continue out.
All entrance canopies to functionalist houses are designed that way. Not to mention all balconies. Metal coverings (including covering of the top side of individual beams) are a good way to protect against moisture. The pergola roof's beams should be anchored in the rafters but are separate elements. I can understand the house manufacturer's concern.
All entrance roofs on functionalist houses are solved in that way. Not to mention all the balconies. Sheet metal coverings (including covering the top side of individual beams) are a good way to protect against moisture. The pergola roof beams should be anchored in the trusses but as separate elements. I can understand the house manufacturer's concern.
Sheet metal sounds interesting to investigate. Would you be worried even with that solution?
Limited sheet metal covering works very well. I have used it a lot myself.
Great, thanks for the input! I will suggest to the house company to go for sheet metal covering with maybe 3 main beams anchored to the rafters and the rest laid on top with, for example, joist hangers.
Does anyone have examples of how to attach a standard pergola to the façade in a way other than with a horizontal ledger board? I was warned against it because moisture accumulates there. I was considering whether one could, for example, reinforce with a beam behind the panel and attach the beams directly to it through the façade.
All entrance roofs to functionalist houses are solved in that way. Not to mention all the balconies. Metal coverings (including covering of the top sides of individual beams) are a good way to moisture-proof. The pergola roof beams should be anchored in the rafters but as separate elements. I can understand the house manufacturer's concern.
Regarding separate elements - here comes a more developed idea for the column-free pergola roofs. My thought is to attach either a slot or double nailing plates to the rafter that extends through the facade and attaches to the pergola beam, preferably at the top to effectively counteract twisting. The pergola beam is also mounted on a shelf, e.g., 40 x 70 mm for the vertical load. Moisture-proofed with metal on top, a bit unclear how so far. Could that be something?
Visible metal brackets should be avoided. Additionally, they are probably too short. Another solution, whose construction can proudly be displayed, involves two narrower boards that are attached to each side of the rafter (with proper splicing length) and are joined with blocks at two points.
Visible nail plates should be avoided. Additionally, they are probably too short. Another solution, whose construction can be shown off, is two narrower boards that are attached to each side of the rafter (with adequate splice length) and are joined with blocks at two points.
What do you think about a groove being milled in the middle of the rafter instead? I was thinking two plates for stability, but it sounds reasonable to avoid visible nail plates. Your solution sounds super interesting, but I probably don't understand it at all, I almost see some kind of Japanese wood-puzzle craftsmanship in front of me Do you have any reference or image?
Vi vill skicka notiser för ämnen du bevakar och händelser som berör dig.
