ceiling gap flood route plug

Tampax.

papier mache.

Or use a more decorative strip of something and stick it on with water- soluble glue

Owain

Don't be stupid, they swell when wet and don't burst which is the opposite of what's wanted. He would be better off with rolled up bog roll.

but warm moist air would permeate through it and cause condensation.

Why not re-route the pipes *under* the Kingspan, so that they *don't* freeze and burst?!

Then what is he going to do on those dark winter nights when he comes home from work and there is no leccy to watch the telly with until he fixes...errr.. Wait...

Ummm.

next year or the year after i may reroute plumbing and header tanks , but theres a metal tank to cut up and remove,

i'm just doing this temporoary for a few winters while i do more important DIY projects on the building.

owain's idea is the best so far.

[g]

fibreglass. Water can run through it, and when wet it will jsut fall out if it gets the chance.

NT

I've put sloping kingspan boards on my bathroom ceiling with a gap between such that when the next freeze and thaw comes and the pipes above burst the water will come down the gap between the boards.

Now I want to seal the gap against draughts with something that will burst or dissolve when the flood comes so that the whole ceiling doesnt collapse.

Ideas for what to plug the gap with please?

Nothing.............

Leave a frost stat unit running to prevent the freeze in the first place or heat tape the pipes concerned with self regulating tape made for the purpose.

yes, fibreglass wool, then glue a plastic vapour barrier below it such that the weight of the water will snap the plastic.