According to the underfloor heating manufacturer, the underfloor heating should be installed in spaced paneling 28 x 120. It sounded good to me until I realized it wasn't the easiest to obtain. Grooved boards are too expensive, so it's spaced paneling that's needed. Where can you find this, or is there another type of wood that works?
There is 28*120, if you have a well-stocked lumberyard nearby they should have it in stock. If you have a Beijer byggvaruhus nearby, they have 28*120.
Is it supposed to be 120 between the loops then?
Couldn't you set double 28x70 = 140mm then? It would be slightly sparser but it shouldn't be noticeable much, one might think...
Couldn't you set double 28x70 = 140mm then? It would be slightly sparser but it shouldn't be noticeable much, one might think...
I have laid all my underfloor heating in 28x70. Space out the entire room with xx mm (xx=width of plate+pipe) between each gap and place a number of noggins at each end under the gaps. Then plan how you want the loops and cut up the bends with a jigsaw, then secure the loose gaps with the help of the noggins underneath. Then plates and pipe, and on top of this, floor gypsum. It becomes very sturdy indeed. No reason to special order 120x28.
Nice to have someone who has tested in reality. Then it will probably be 28 x 70. It's significantly cheaper as well. It turned out to be expensive to special order since the lumberyard didn't have such frequent deliveries now in the winter. I'll buy some and test it first.
The point of 120mm sparse to 20mm pipes is that you place these with 30mm spacing over the entire floor. Then the correct center-to-center distance for the pipes is achieved. With narrower sparse, you have two measurements to keep track of.
Moreover, 22x120 is a dimension that is available everywhere. It can also work but depends a bit on the floor construction. If the joists are at cc30, it works excellently.
Moreover, 22x120 is a dimension that is available everywhere. It can also work but depends a bit on the floor construction. If the joists are at cc30, it works excellently.
According to the underfloor heating manufacturer, it works with 28 x 70 or 28 x 120. With 3 pieces of 28 x 70 between the pipe loops, there will be a few cm less wood in between compared to 2 pieces of 28 x 120, but that might not matter. It would be great if, as you say, it works just as well with 28 x 70 since it is "somewhat" more standard among lumber.
Are you going to have sheets too?
How wide are they?
How wide are they?
With 4 pieces of 28x70 side by side, you get 280mm.
Then the loop's cc-measurement becomes approximately 310 mm, and the plates have a 40mm gap between each other, wondering if that greatly affects the result?
Then the loop's cc-measurement becomes approximately 310 mm, and the plates have a 40mm gap between each other, wondering if that greatly affects the result?