There is a hole the size of a no 8 screw in a brand new plastic hot water header tank due to a plasterer putting a no 8 screw through it.
What is the best way to repair this? The hole is 3/4 of the way down and near a corner.
Adam
Depends very much whether you need the plasterer again! If not, a new tank with plumber attached at plasterers cost. If you do need him then stainless steel nut bolt and two washers covered in silicone sealant and gently tightened.
AWEM
He is a good lad and a good plasterer. Just not good with screws it seems:) No way am I making him pay for a new tank if I do not have to. If it involved work and paying customers that might be different (the tank is 3 days old and I fitted it myself)
I do hope I can get my arm inside the tank far enough to reach the nut. Would brass not be better than stainless steel?
Adam
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sealant
Brass would do, but could go green dependant on your local water. Bronze would be better.
AWEM
And I presume that you cannot have too much silicone sealant? What about drying time for the silicone?
Adam
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plastic
Overnight should be ok. Make sure it doesn't have fungicide in it or your water will be tainted
AWEM
Did he not feel guilty at all? He ought to at least offer you a small consideration such as some beer.
Look you've already been in one 'incident' this week......
No. A good quality stainless steel. Screwfix have selections of them. I would also put a spring washer on as well as the flat ones
If you want a quick "High Street off the shelf" solution what about a nylon car number plate nut & bolt + silicone? The pressure is going to be 0.75 psi at most
Peter K
In article , ARWadsworth writes
I'm not sure about the bolt and silicone option, too much reliance on correct application, coating the threads and as it's going to be a very thin film at the critical points I'd be worried about reliability under movement.
In your place I'd put a rubber (tap?) washer on a roofing bolt and fit it from the inside of the tank with regular washer and nut on the outside. The idea of this is that there is a large sealing area. Don't put a plain washer on the inside.
Fit a 15mm tank connector on the hole using two poly washers. . Then put a
15mm compression cap on it.
That's actually not a bad idea from an armature. Of course Adam would cut the pipe properly with the correct tool..
Duh...... The hole is near a corner!
I would let him buy me some beer but he his a good friend and it is his sister's house. I think he feels guilty enough.
Stainless it is.
Adam
I might be able to get a tank connector in if I cut the new hole offset to the unintentional hole. I do think it is too close to the corner though. I will measure up tommorrow.
Adam
Could you line the tank with a pond liner?
Owain
If one of these can't be fitted, ditch the tank.
A pro would think of these things.
Of course it might be challenging if the hole is in the bottom of the tank.
No. I need the outlet near the bottom of the tank to supply the hot water cylinder.
Adam
But it is not. Duh!
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