I will build a pent roof (6 degrees) with a length of 6 meters. The roof will be insulated with about 400 mm of insulation. We will have full height with a sloping interior ceiling.
Should I use double 220x45 (framing lumber on edge) or should I buy laminated beams?
What is most economical and best?
Should I use double 220x45 (framing lumber on edge) or should I buy laminated beams?
What is most economical and best?
Then you can also consider swelite's lightweight beams.
http://www.swelite.com/
I don't know exactly what it costs or the price difference compared to other systems. I imagine you save more with swelite or kerto the larger dimension you choose. With swelite, you also get a smaller thermal bridge, as the heat only escapes along a 12-15mm board compared to a 45 mm beam.
It is the woody stores that have swelite lightweight beams in their range, I only checked quickly with the salesperson at one store about the price, and we came up with a 170mm R-beam in 5 meters length would cost about 50:-/m. So about double the price of a 170x45 beam. But this was the list price; he admitted that there would be a different price for beams or joists for an entire construction.
Right now I have sketched walls with 170x45 and cross-beamed with 45mm on both the inside and outside. Since the lightweight beam probably reduces the thermal bridge somewhat, I started thinking that a 220 R-beam with 45 cross-beamed on the inside would be just as good, and probably a bit cheaper than a 170mm R-beam + 45x45.
But I have no definite prices, and not quite sure about which beams are used in which parts of the construction.
If you delve further into these lightweight beams and/or kerto, I would be interested to know the prices you end up with for the different systems.
http://www.swelite.com/
I don't know exactly what it costs or the price difference compared to other systems. I imagine you save more with swelite or kerto the larger dimension you choose. With swelite, you also get a smaller thermal bridge, as the heat only escapes along a 12-15mm board compared to a 45 mm beam.
It is the woody stores that have swelite lightweight beams in their range, I only checked quickly with the salesperson at one store about the price, and we came up with a 170mm R-beam in 5 meters length would cost about 50:-/m. So about double the price of a 170x45 beam. But this was the list price; he admitted that there would be a different price for beams or joists for an entire construction.
Right now I have sketched walls with 170x45 and cross-beamed with 45mm on both the inside and outside. Since the lightweight beam probably reduces the thermal bridge somewhat, I started thinking that a 220 R-beam with 45 cross-beamed on the inside would be just as good, and probably a bit cheaper than a 170mm R-beam + 45x45.
But I have no definite prices, and not quite sure about which beams are used in which parts of the construction.
If you delve further into these lightweight beams and/or kerto, I would be interested to know the prices you end up with for the different systems.
In this case, you can use an H450 at cc1200mm which has the dimension of 70x450mm. Then you can insulate up to the upper flange (wooden joist) and take the ventilation in it. Since insulation height and not load impact determines the dimension in this case, I can probably say that this is the cheapest option if you compare with Glulam/LVL. The lightweight beams are also significantly easier to handle since the weight is a fraction of a Glulam/LVL beam. Plus, you get a much smaller thermal bridge since the life (masonite web) in the beam is only 8mm. Check with Beijer or Opimera in Halmstad or Varbergs Trä. They should be able to help you with prices. Otherwise, they can throw out a request for a quotation to us at Masonite Beams AB (formerly Swelite).
As mentioned, feel free to check http://www.swelite.com for more info. You can also contact one of the engineers, and they will help you as time permits.
Best regards, Roger E, engineer.
As mentioned, feel free to check http://www.swelite.com for more info. You can also contact one of the engineers, and they will help you as time permits.
Best regards, Roger E, engineer.