Can I glue Celotex boards?

[frahkn]

I have some spare Celotex and (being a bit bored) thought that I could make a coolbox of sorts, if I could make a cube using 6 pieces each (say) 18" square.  It would be necessary to glue these together but can this be done? If so, what glue would you use?

 

 

[BEngo]

Yes.  Use solvent free grip fill or equivalent. You may  need to trim off the aluminium foil layer where you want to glue the bits  together, as otherwise you are relying on the foam to aluminium bond as well as the foil to foil bond.  Have a try with some scrap.

 

Celotex is pretty easy to dent so you may also want a ply box on the outside to protect it.

 

N

[Hudds Lad]

i’d guess anything solvent free would work, but can’t imagine the bond would be strong on the un-foiled material.

what about a thin ply box lined with celotex so you’re sticking the foil side to ply instead?

[Idle Days]

We used to use duct tape to join it when we used it to make a/c ducting. 

[Jen-in-Wellies]

You could use bamboo skewers to reinforce the joints. Coat them in glue, then push them in at opposing 45 degree angles.

Jen

Edited February 22, 2021 by Jen-in-Wellies

[frahkn]

1 hour ago, Jen-in-Wellies said:

You could use bamboo skewers to reinforce the joints. Coat them in glue, then push them in at opposing 45 degree angles.

Jen

Hey, outside the coolbox thinking, I like it!

[Chris Lowe]

Try Multi-Use Grab Adhesive – Premseal Max-Bond we've used it at work.

 

[Man 'o Kent]

Used it to line a 20ft x 12ft tin shed 15 years ago, used a "no-nails" type glue, nothing has come loose yet including the ceiling.

[Onewheeler]

I've used silicone sealant. Seems to work.

[nb Innisfree]

Gorilla glue, it's polyfoam basically, same as cellotex, so it would be 'welded' 

[blackrose]

Stixall from toolstation or online. No boat should be without it.

[W+T]

If you are just using the PIR as a box with no inner or outer lining then wrap it in duct tape and inside use aluminum foil tape for the corners. job done, no need to glue the joints.