Expanding glue?

[Joukko]

Is there any good glue that expands a little (buy where?)? I'm going to try to remove some creaking from the wooden staircase. What else can be done?

Jocke

 

[_bystrom_]

PU glue (polyurethane) expands quite well.
Becomes rock hard when it's cured.
Available where you buy wood glue.

Otherwise, I don't know, stair creaking is tricky to fix.

 

[Havsutsikt]

Is it a new staircase? No stairs should be glued!!! Often it is possible to retighten a newer staircase and securely fasten the steps into the stringers. A staircase should be tightened very securely, it is indeed a kit, but should not be assembled like a piece of furniture from IKEA but rather like a cylinder head on a car.

 

[gadu^]

How much does PU glue expand compared to foam sealant?

 

[Immobil]

As Havsutsikt says: Do not glue the stairs!
Tighten the screws firmly, and if that doesn't help, remove the screws. Use new, longer screws. Feel free to use Torx, they can handle being tightened.

 

[Joukko]

I haven't planned to glue the stairs. I was thinking of putting some glue under the steps so that the steps are pressed up a bit, maybe that will stop some of the creaking.

Jocke

 

[Immobil]

It won't work. Skruva is what's needed.

 

[Joukko]

Also, I forgot to mention screwing. It can't get any worse. I've screwed in a few extra screws here and there, and it has gotten a little better but still mostly creaking by the wall where I can only access from underneath and screw the steps.

Jocke

 

[Immobil]

It gets worse with glue. It might help temporarily, but not in the long run.
Try angle screwing the treads from the underside into the stringer. Pre-drill if possible, it makes it easier.

 

[Joukko]

Then I'll skip the glue. What size screw is best to use?

Jocke

 

[Immobil]

Torx 5.0x70 or 5.0x90 is what I usually use.