We have a cat-flap that goes through the wall - so, a short tunnel for Tibbles to go through. At the exit to the outside, the original plastic item (part of the cat-flap kit) that edged the opening is shot so I want to re-edge. Going to get some L-shaped PVC strip for the job, mitre it and glue to the wall.
So here's the Q: would Wilko's best PVA glue be OK for the job or No More Nails or should I use something else altogether.
Not PVA. No more nails should work, alternatively silicone, or something non-setting like frame sealant / gutter sealant. You want a flexible gap-filler that sticks to stuff.
silicone?
Well I did consider that, but I thought it needed exposure to the air to go off, so I considered alternatives. It would be handy to be able to use that, we just reglazed the greenhouse (a lot of cutting up polycarbonate sheets) and used a fresh tube of silcone for sealing up some spots. There's lots more left in the tube, which will only be wasted otherwise.
IME silicone, 'though a good sealer, won't stick to PVC. Try putting some on it and let it go off. You are most likely to find you can get it off again quite easily. However, if it goes around the "L" it may hold the stuff in place.
I might be tempted to use something other than PVC, but not sure what.
Eh? It's the goto "glue" to stick uPVC trims on double-glazing frames
But you can just rub it off (ooh-err!). Try it. It might do the job, but it's not glue. Something like solvent cement is, but wouldn't normally be useful for sticking PVC to brickwork.
Yes you can, if you can get to an edge of the silicone itself.
Hence putting it scare quotes above.
The point remains that silicone is used to stick PVC.
Here, when we had all the windows converted to uPVC DG some 11 years ago, all the trim parts were self adhesive. You peeled off the paper backing to the adhesive side, then offered up the trim piece and it stuck in place. Silicone was used as a *filler*, such as between the edge of the frame and the brickwork. It adhered well enough to brick and uPVC for that purpose, but not as an adhesive.
Round here the DG firms tend to stick trims etc. with double sided foam cored tape, the thickness of the foam core depends on the roughness of what they are being stuck too. Silicone is then only used as a thin bead to seal the join.
I have a whole roll of some 1/2? tape I used for a loose trim and could send you a couple of metres if you want.
Richard
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