Gluing fibreglass

May 22, 2026 Last reply: 1 month ago 4 Replies
N

I've knocked a fibreglass (I think) water feature off a low wall and part of it (the head of an otter) has smashed off into pieces.



What is the best way of joining the pieces back together again. The largest pieces seem to fit closely together so some form of glue should work. The rest is lots of tiny shards...



The thickness of the fibreglass is probably about 1-2 mm. It is brittle, with no flexibility - which suggests it's fibreglass, though I can't see any evidence of glass-fibre matting so maybe it's just a very hard, brittle plastic without any glass reinforcement.


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N

Looking at other water features that are sold, it may be resin rather than fibreglass...

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N

My technique is to hold a hot melt glue gun over a clean metal sheet, running the glue spirally over the metal, to obtain hot melt glue string, a mm or less in diameter. Thrn with an old soldering iron , like soldering, "solder" the largest bits together at the corners only. Then "solder" the sub-parts together. Wrap the whole lot with stretched thin silicone rubber sleeving in multiple direcctions. Heat the whole lot with low temperature hot air gun until the whole thing squirms and returns to its proper shape, spherical or whatever, minimum crack appearance. When cool introduce watery superglue in the cracks. Fettle and patch up/colour up missing pieces

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T

Either way epoxy should do it but if there are bits missing then TNPs favourite of car body filler will do the trick.

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T

polyester resin or car body filler

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