Foamboard adhesive?

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Gtarling

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What have people found to be the best adhesive for making buildings from foamboard? I know superglue (CA) works, but I've found it can be quite brittle, so looking for weatherproof alternatives if there are any?

G
 
Gtarling said:
What have people found to be the best adhesive for making buildings from foamboard? I know superglue (CA) works, but I've found it can be quite brittle, so looking for weatherproof alternatives if there are any?

G
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Good old standard Uhu does for me, used generously and given plenty of time to set, preferably clamped, taped and/or weighted for larger joins. I've been refurbishing a building which has had a dozen or more years outside and the glue has survived well. I seem to get through a lot and buy in bulk via eBay.
 
I use high viscosity ( ie thick) super glue which seems to be holding up quite well. I get mine from Tool Station. I find it bonds better than the thinner stuff.

www.toolstation.com

HV Super Glue 20g | Toolstation

This industrial grade high viscosity super glue is just what you need for all those odd jobs. It can be used to adhere both porous and non-porous surfaces and has a slightly delayed set that allows you time to perfect your positioning. This reliable super glue is suitable for use on a wide range...
www.toolstation.com www.toolstation.com

Rik
 
If it is foamex type foam board, and not the card covered, then plastic adhesive should do the trick.
 
Martyn - thanks, I'll get some Uhu ordered and give it a try.
Rik - thanks, but I'd rather not use CA adhesives, as I've become sensitised to them over the years.

G.
 
I have been using UHU Power that has stood the test of time outside. All the buildings on my Boston Lodge build have been made using it. Whilst that build only started last summer, other builds in my garden have been out 3-4 years now with no falling apart.
www.gscalecentral.net

Boston Lodge - well not quite!

BOSTON LODGE Link to more on Mikes line. https://www.gscalecentral.net/threads/some-work-on-mountains-and-a-concrete-viaduct.315618/#post-638777 I have been helping my good friend Mike build his Garden Railway since he moved to Somerset in 2017. There was a long term loose plan for the line...
www.gscalecentral.net www.gscalecentral.net
 
If you find its breaking, the joints , I re inforce the internal walls .super glue isn't all the same quality...theses have been out side for at least 5 years ...20220602_140236.jpg
 
Jon - thanks - I have some 'normal' Uhu on order and will give that a try first of all, then resort to the 'Power' version if necessary.

Mike - Thanks, but I can't use superglue (CA), see post #5

G.
 
Mine were glued with the 5 bottles of Supa Glue for a £1 you get from poundland, after 5 years outside nothing has come apart.
 
I have used Copydex in the past: it works well, but because it cures by the evaporation of water, drying times are very long -which is not ideal!
 
Northsider said:
I have used Copydex in the past: it works well, but because it cures by the evaporation of water, drying times are very long -which is not ideal!
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Never tried it outside does it work? But I can see it as a good possibility to use inside of joints to strengthen them. Just the thing if you have run out of Clear External Acrylic Sealant which is always when I need to strengthen infernal joints.
 
I've not used it for buildings that are outside permanently, just the ones that come out for a running session and might be left out for a few days in fine weather.
 
Northsider said:
I've not used it for buildings that are outside permanently, just the ones that come out for a running session and might be left out for a few days in fine weather.
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Oh thanks, do not bring buildings inside. Too much of a faff.
 
Sid - thanks, but I can't use superglues.
Patrick - I've never found Copydex to stick well to plastics - are you saying that it does?
 
Interestingly, I keep getting adverts for Gorilla Glue popping up in this thread. I've not used it for Foamboard but have used it elsewhere successfully. The parts will need to be clamped while the glue sets as it expands to gap fill, and one part need to be dampened to activate the glue.

Rik
 
Yeah, Gorilla Glue will work on foamboard, but I'm not a huge fan, due to the need to clamp all the joints, which is not so easy to do on some joints and it can leave marks in the foamboard. There are a few flexible CA adhesives. which shouldn't give a brittle joint, so I may try to find an odourless version which might not affect me as much.

G.
 
Gtarling said:
Patrick - I've never found Copydex to stick well to plastics - are you saying that it does?
Click to expand...
No, I've used it to make paper-faced foamboard models that don't stay outside in the rain. I can't recall what I used to join plastic-faced foamboard models: probably a CA glue, but I know you don't want to use that.
 
ge_rik said:
Interestingly, I keep getting adverts for Gorilla Glue popping up in this thread. I've not used it for Foamboard but have used it elsewhere successfully. The parts will need to be clamped while the glue sets as it expands to gap fill, and one part need to be dampened to activate the glue.

Rik
Click to expand...
Just on with building with formboard for the first time, I've used Gorilla so far and as has been said, you wet one surface and need to clamp, yes it does expand and glues any bits of wood/ right angle you've used to keep the joint square :(
so be sparring with it, but it does seem solidDSC_0047.JPG
 
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