and another leak

[JP_]

Same copper pipe has now developed 2 pinhole leaks, each on a bend on the pipe. Pipe was installed 2 years ago. First leak was about 18 months after, and 2nd leak pretty much 2 years to the day.

Is this likely an unlikely failing in a cheap copper pipe, or a plumber not knowing how to bend a pipe without damaging it? Both holes were on the bend.

 

[Bosswhite]

Could be that the bends were to tight in the bender , cut out the bends and put in elbows .

 

[gas112]

cheap pipe / aggressive flux left on pipe / faulty house electrics

 

[JP_]

cheap pipe / aggressive flux left on pipe / faulty house electrics

2/3 makes sense

 

[Bod ...]

cheap pipe / aggressive flux left on pipe / faulty house electrics

This I think is now a possible problem. (Cheap pipe) it's happened before.

 

[Notch7]

Most of the pipe I’ve used has Wednesbury stamped on it, dunno if that’s ok

 

[JP_]

Does anybody know of an external fan that is designed to go over airbricks to speed up ventilation?
Seems pretty wet under there and humidity is high in general with the weather, so getting it dry this time of year will be a challenge.

 

[blup]

I use Wednesbury pipe from screwfix, hope its ok

Blup

 

[blup]

When I practised on a pipe bender, the pipe would easily tear if bent one way and another, or just bent several times back and forth, so the knack seemed to be doing it once.

Blup

 

[noseall]

I use Wednesbury pipe from screwfix, hope its ok

Blup

Thursbury, is as good.

 

[Andydevon]

Both better than Fridbury

 

[Roy Bloom]

Does anybody know of an external fan that is designed to go over airbricks to speed up ventilation?
Seems pretty wet under there and humidity is high in general with the weather, so getting it dry this time of year will be a challenge.

Dehumidifier.

 

[Harry Bloomfield]

Does anybody know of an external fan that is designed to go over airbricks to speed up ventilation?
Seems pretty wet under there and humidity is high in general with the weather, so getting it dry this time of year will be a challenge.

Could you mount one on the inside? 5" square mains powered fans are ideal for this, bought as surplus stock, as used for cooling for main frame computers.

 

[Exedon]

Does anybody know of an external fan that is designed to go over airbricks to speed up ventilation?
Seems pretty wet under there and humidity is high in general with the weather, so getting it dry this time of year will be a challenge.

Subcontracted to a specialist insurance contractor for many years.
Decent size dehumidifier plus a large fans to keep air movement is how they do it.
As for pinhole in copper doing insurance work saw quite a bit, at times seems quite random.
One of worst I ever saw was a 3 mt length of 22mm with a Compression stop tap connected on end and a push fit elbow other no flux/ solder anywhere near 17 pinholes!

 

[JP_]

I have a dehumidifier, and got a fan blowing down into the floor, plus 2 much smaller fans under the floor.
Things are def drier. I reckon just give it plenty of time - the sub floor is usually very dry to the air bricks are doing their job well enough when there's not a leak.

As for the pinholes, 17 is crazy! I actually made mistake though in my first assessment - the first hole was def on a bent pipe, but the second is just near a junction, so no bending took place there. But about 20-30cm from the where the first leak was.

Insurance - don't mention that word! My home insurance covers only damage caused by the leak and not trace and fix. So my floor is not covered, nor is the plumbing costs. Oh, and there's a massive excess too. So pointless insurance!