K
Can I replace the particle board in the construction drawings with tongue and groove or does the entire roof structure need to be recalculated then?

I can get tongue and groove for the same price as particle board so it's a question of what's best and wood always feels better than particle board.
 
Is it the floor in a living space? Then I would strongly recommend this. Easy to lay, no gluing, neat and strong. I have it in the attic, but I wish I had it throughout the house instead of 1-, 2-, and 3-strip engineered parquet boards:

Pine floorboard with a smooth surface and visible knots, economy quality, size 26x190 mm, priced at 175 kr/m², ideal for residential use.

http://www.gsbyggvaror.se/produkter/tra/FURU_GOLVTRa_EKONOMI_KVALITE.html

If you live in northern Skåne, it's not far to go. Otherwise, similar flooring is probably available at most building supply stores. But I think GS Bygg has always had good prices.
 
One advantage of slätspont is that it does not contain chemicals, which golvspån does.
 
K
Yes, I am aware of the advantages, that there are fewer chemicals and less flex. The question is whether the overall stability can be negatively affected since the smooth joint does not provide the same panel effect as a glued subfloor of 22 mm chipboard.

It's 28x120 in question. If I nail it, it can't be used as flooring, right?
 
If it's approximately 60 cm, then 28 mm thick boards will work excellently.

Of course, you nail the boards. How you do it is partly a matter of taste. Either directly from above with nice forged nails or at an angle into the tongue for hidden nailing. Splice over the beam and distribute the splices between the beams to avoid a general splice, unless you have a load-bearing wall underneath.

From above is usually not used except in economy spaces where you normally don't walk barefoot. However, it is possible to nail recessed, but then I believe you use cut nails.
 

Best answer

I agree with all the previous comments that smooth sports are much nicer than particle board. However, if the particle board is to be screw-glued, then it is an important part of the construction (the bending of the floor beams) that cannot be easily changed.
 
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