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Fixing perspex to cladding – any thoughts ?
Hi
we have a sign to affix to an industrial building – effectively a 8 x 3′ sheet of dark blue perspex (not in a frame) which has to be neatly (and preferably discretely) fixed to the cladding.Any thoughts on how this might best be achieved ? Also we’re looking for a supplier of standoffs (preferably stainless)- if anyone has the name of a reputable supplier ??
thanks in advance – lee -
5 Replies
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You could manufacture some kind of interlocking slat type thing glued to the back. Hard to describe, easy to do (imagine a 1inch strip stuck to a 2 inch strip, one on the wall and one on the rear of your sign). That said, I wouldn’t be happy putting a dark sheet that size on a wall without a frame. Is it South facing, for example? If it is expect a LOT of expansion in the summer.
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You could always fix a ‘back board’ to the cladding & then D/S tape (VHB or similar) the sign to that. Very secure & no expansion / warping worries.
Shame you’ll never be able to remove it!Any reason why it was Perspex and not di-bond or aluminium? Just wondering, as that would’ve made for easier fixing.
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Wasn’t expecting perspex to expand i must confess ! well not to that degree anyway 😳
Decided to use perspex as it was in the the particular colour the customer wanted and it has that ‘glass’ type look to it.
The building is within a cul de sac that and isn’t south facing so the sign wont be too open to the elements………… hopefully !
I’ll give your ideas more thought Andy and David and see what might be best.
cheers -
Use marine silicon sealant , the stuff they make fish tanks joints out of
"shluck" the sheet down and smooth it out , it keys well to the pex , is weather resistant and has "give" for expansion. Use a few pieces of that spongy mirror tape to stick it to the wall while the silicon dries (that too has "give")
If the pex sheet is 3mm or less , you have a problem as it is very flexible and due to the glossy surface any ripples etc in fixing on a less than flat surface will be seen , you have no option but to put it on a backboard then. -
You could fix it using split battens.
Fix 2 rails to the cladding just short of the length of the sign panel, both need to stand off the surface, and then glue tongues onto the rear of the acrylic sheets. These can be made by gluing acrylic together to make them thicker for strength or use thick acrylic.
The idea is the tongues then slide into the void behind the rails, you could even make the tongues slide into the low points of the cladding which means the rails can be fixed flush to the face. Don’t know if this makes sense to you, i think Andy is talking about a similar system.
The longer the tongues the better as it stops the panel being able to lift out of the rail, this method allows expansion and has no ugly fixings on the face.Hope it helps and makes sense!
Mike
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