Hello.

We are planning to build a summer conservatory this spring that will be uninsulated. It will be located at an angle of the house as shown in the picture. 3.5x5m in size with a lean-to roof.

After talking with various "experts," I have come to the following conclusions: I will remove the existing paving stones and build a truss directly on the gravel with pressure-treated wood 45x90mm. Then I will lay wooden decking of 28x120mm. Posts to support the roof will be 3 pieces 115x115x2100. As a frame for the roof, I will build laminated timber 56x270, this is to avoid having a central post along the length (5m). Beams for the roof will be 6 pieces 42x180 which will be attached to the existing eave on the house. As a roof, I will lay 16mm cellular plastic. The glass doors I will order from "Glasin," custom-made, single glass (6mm). The advantage of these is that we can slide the entire long side to one side for maximum opening. (4 doors).

Prices:
Wooden decking: 4000:-
Laminated timber: 7800:-
Roof: 8400:-
Glass: 20300:-
Gutter: 1400:-
Miscellaneous approx: 3000:-

Total: 45000:-

Now to my questions:
Do you have any comments/suggestions for improvements?
What do you think about the budget?
Tips & Tricks?

Best regards, Fredrik
 
  • Illustration of a summer room extension with wooden frame and slanted roof, connected to a house corner.
  • A yellow house with red roof tiles, viewed from the garden. A patio with white chairs is visible in the corner, planned location for a new summer room.
Hi Fredrik,
Can you explain a bit more where you would attach Bärliner to the roof which is attached to the existing roof box on the house. It doesn't seem to be any high ceiling when I look at the pictures. How high will it be at the far end?
 
pgillner said:
Hey Fredrik,
Can you explain a little more where you would attach Bärliner to the ceiling which is attached to the existing ceiling box on the house. It doesn't seem very high ceiling when I look at the pictures. How high will it be at the furthest point?
The height closest to the wall will be 2400 at the bottom edge of the roof beam.
The height at the furthest point towards the glass will be 2100 at the bottom edge of the roof beam.
(Roof beam = 180)
Slope 100mm/m

Does this sound too low?

Best regards, Fredrik
 
I have similar thoughts at my place. Is 2100 too low at the bottom of the roof beam? If you come to any conclusion, I would gladly accept it.

I'm considering having transparent plastic or glass as the roof, it enhances the feeling a bit. Besides this, I've thought about welding the entire roof, then smaller dimensions work well.
 
You haven't considered having a hipped roof, similar to the house. Put glass in the roof as well and make it openable like a greenhouse with automatic opening when it gets too hot. Also consider making a larger conservatory with space for a hot tub or a small pool. Then expand the deck further, so you don't lose too much deck space without a roof. Heat the pool with pellets or propane... Oh, now I got carried away.
/CC
 
Make sure it is windproof, even from underneath. Consider insulating with foam underneath the decking and think about whether you should have a bit better insulation in the glass modules.
/CC
 
chris47 said:
You haven't considered having a hipped roof, similar to the house.
What do you mean? The house doesn't have a hipped roof, and how would you do that on the conservatory? Feels like it would be a bit strange.
 
There won't be any isolated sunroom and the roof will be as planned.

BUT... as they say on "let's dance"....

Will I need to put something under the wooden deck to prevent condensation from forming in the room?

Do I need to prime the pressure-treated wood just to be safe or is it "over kill"?

Grateful for help // Zkaning
 
zkaning said:
Do I need to prime the pressure-treated wood just in case, or is it "overkill"?
Do you mean for rot protection? No, it's absolutely not needed. Pressure-treated wood is mostly oiled to prevent ugly cracks, not for durability reasons.
 
I mean gable roof, of course. It would look modern.
/CC
 
chris47 said:
I mean gabled roof, of course. It would look modern.
/CC
What would a gabled roof look like when it needs to connect to 2 walls at an angle?
 
I built a similar solution a number of years ago. I thought the ceiling would be too low and moved the terrace roof up onto the house's roof and made a hipped design with 16mm multi-wall polycarbonate which then transitions into a standing seam metal roof when I got over the house. This gave an airy feeling instead of a feeling of being enclosed.

If this is located facing south, I want to warn you that it will get very hot, which is why I used smoke-colored multi-wall polycarbonate, and I am very satisfied with it!

I consulted two different architects to come up with this solution and recommend you do the same. I got a design that enhances the feeling of the whole house where the terrace became part of the house and not an appendage that doesn’t really fit in...
For the architects + draftsman who produced the building permit drawings, I paid 12' + a whiskey ;-)
Then the rest cost ~80'
 
jimnor said:
I built a similar solution a number of years ago. I thought the roof would be too low and moved the terrace roof up to the house's and made a hipped roof in 16mm channel plastic, which then transitions into sheet metal roofing when I came in over the house. This gave an airy feeling instead of a feeling of being enclosed.

If this is in a southern position, I want to warn you that it will become very warm, so I installed smoke-colored channel plastic, which I am very pleased with!

I got help from two different architects to reach this solution and recommend you do the same. I got a solution that enhances the feeling of the entire house where the terrace became part of the house and not an extension that doesn't really fit in...
For the architects + draftsman who provided construction drawings, I paid 12’ + a whiskey ;-)
Then the rest cost ~80’
Sounds like a perfect and stylish solution.
Do you feel like uploading a picture (or sending it to me via e-mail: patrik.gillner@comhem.se )
 
pgillner said:
Sounds like a perfect and stylish solution.
Do you feel like adding a picture (or send it to me via e-mail: patrik.gillner@comhem.se )
I would also like to see a picture, thanks!
 
I am too, I'm thinking about building a similar house and getting a NICE conservatory with an angled house has been one of my BIG considerations...

I would be SOOO thankful to see how you resolved it.

Thank you in advance
 
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