T twoody said:
Personally, I would spend a few extra coins on better and longer screws, I think decking screws are way too thin for sparse.
Now I would personally choose chipboard screws 55mm though and not decking screws.
 
Oskerien Oskerien said:
Now I would personally choose chipboard screw 55mm and not decking screw.
Same design. Not much of a screw at the tip, rather the chipboard screw is worse.
 
R RoBo said:
Same design. Not much of a screw in the tip, rather that the particle board screw is worse.
I'll have to try it out. If I countersink it a bit, it'll still go in about 3cm into the rafter. If a screw can hold my weight of 80kg, it'll probably hold :giggle:
 
yes and a four-inch nail holds an apprentice. But still, scaffolds collapsed in the past. Would never screw with such a flimsy screw.
 
We nail sparsely and on 28x70 it is not possible to use three-inch nails, so we go up to four-inch nails.
 
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RoBo
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T twoody said:
We nail sparse and on 28x70, we can't use three-inch nails, so we go up to 4-inch nails.
What do you put on the sparse then?
 
Oskerien Oskerien said:
What do you put on the studs afterwards?
Gypsum
 
T twoody said:
Plaster
One layer?
 
Oskerien Oskerien said:
A layer?
Yes, a layer of plaster.
 
T twoody said:
Yes, a layer of plasterboard.
Okay! The reason I'm so keen on screws is that I have problems with my hammer arm and feel that screws would be a good alternative. Regular woodworking screw strips seem hard to find...
 
I'm a bit curious about how it went? I have the same problem. I'm going to put 28 mm spacers on an old ceiling and then plaster with short planks. Did it go well with banded 55 mm chipboard screws?
 
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KW60
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S SJfunkis said:
I'm a little curious about how it went? I have the same problem. I will put 28 mm battens on an old sub-ceiling to then plaster with short planks. Did it go well with 55 mm chipboard screws?
I ended up tearing down the entire false ceiling to reinforce and insulate better. When it was time to apply the battens, I went and bought a nail gun, much larger model, from Biltema. (y)
 
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Oskerien Oskerien said:
I ended up tearing down the entire ceiling to reinforce and insulate it better. When it was time to put up the battens, I went and bought a nail gun, much larger model, at Biltema. (y)
Ok! There you go. It might be something to consider.
 
Double screw 55mm, decking or chipboard screws fit well, alternatively double nailing with 75/90 nails. There is no requirement for length or anything, rather it should fit well. So it's quite vague.

28mm decking is screwed with 55mm screws, obviously lying on a wooden deck, but the pullout value of a screw is generally much higher than the shear-through value when it comes to wood-to-wood (the head going through the mounted material). For nails, it's the opposite.

In summary - It's unlikely that a screwed sparse panel would just fall down like that. Nor nailed for that matter. Both work well and it is mainly ergonomically and economically which one fits the individual's situation.

Excerpt from AMA Hus

HSD.1531 Sparse panel as a substrate for cladding

Timber should be of grade G4-3 or better with cross-sectional dimensions at least 22×70 (VB0804) at center distances between joists up to 600mm. For center distances of 1,200mm between joists or rafters, boards with cross-sectional dimensions of at least 28×70 (VB0807) should be used. Boards should be butt-joined over support. End-jointed sparse panels may be joined between supports, but at most every third board in the same compartment. The boards should be double nailed or double screwed at each support. The length of the fasteners should be adapted to the thickness of the sparse panel in such a way as to achieve good anchorage against the underlying substrate.
 
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SJfunkis
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Use particle board screws 55mm as suggested above. They are cheap, Decking screws are more expensive. If you find Torx, it's an advantage.
 
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