What length should I choose for the chipboard screw for 22 mm floor chipboard? Is it enough to just screw, or should I apply a bead of glue on each joist? How close should I place the screws?
 
Floor chipboard should be glued to avoid "squeaking." Screws should be at least 50 mm, electro-galvanized, and partially threaded - meaning the screw shank nearest to the head should be unthreaded, at least equal to the thickness of the material being fastened. Maximum 200 mm between screws. This results in an approximate usage of about 18 screws/sqm.
 
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Stickan56 and 1 other
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screw spacing 150mm along the edges and 200mm in the center of the board.
 
Thank you for good answers! d^_^b
 
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Tommy O and 1 other
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Use vinterlim.
 
Marcus J said:
Why winter glue? I have a bottle of Bostik wood glue outside, [link]. What about that? I'll be executed if I come home with more bottles... ;)
If you have regular wood glue, it will work naturally. However, winter glue is stronger, so if your bottle runs out (a LOT of glue is needed), you should buy one of those instead. In my house, I have used 40 liters of glue so far. Maybe half of it for the chipboard floors (200m2).
 
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Stickan56
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But for a hallway of about 8 square meters? Do you just apply a line of glue on each joist? Should you zigzag? How do you do it?
 
I don't quite remember, but I think I used 3-5 bottles of glue for the bathroom floor of 12 square meters. A lot of glue is needed just for the tongue and groove of the chipboard.
 
Marcus J said:
But for a room of about 8 square meters? Do you just put a bead of glue on each beam? Do you zigzag? How do you do it?
You glue the tongue and groove, it becomes two beads. If I remember correctly :)
 
injonil said:
You glue the tongue, there are two strands. As I recall :)
You glue the tongue AND the joist. Two strands on the board attached to the floor and two strands on the one to be installed. On the joist, you can apply a thick strand approximately in the middle of the joist. This latter one is important to avoid creaking.

http://kampanj.byggelit.se/monteringsanvisning6.html

download.asp
 
Gluing the tongue and groove...I had no idea. :blushing:

Highly esteemed forum; thank you once again for being here! d^_^b

Johan Gunverth, special thanks to you for the picture and pdf!!!
 
In part of our house, there was a parquet floor, solid block parquet laid on a floating chipboard floor, under which was 80 mm of polystyrene on a lightweight concrete slab over the basement. This part of the house was built around 1976.

Already when we bought the house, we saw that the parquet had separated, there were cracks straight across the room. Now during the renovation (we have added another floor on that part of the house), we tore up the floor. The chipboards had separated and had gaps of almost 10 mm in some places.

The explanation we received for the problem is that it is wrong to lay block parquet on chipboard. Each block is nailed to the floor, and chipboard does not hold nails well enough. Probably there was too little glue in the chipboard tongue and groove, causing them to separate. There is also a theory that it is due to the house, which was part of a bankruptcy estate in the 80s, standing empty and unheated for about 2 years. The previous owner bought it at an executive auction.

In one of the rooms with this floor, we are now going to lay the block parquet back (looking for a good floor layer), and we have been advised to lay chipboard with plywood on top, as nails hold better in plywood.
 
Johan Gunverth said:
You glue the tongue AND the stud.
Of course! Realized that afterwards. Otherwise, it won't be screw-glued...
 
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