Hi, I'm looking for some advice on how to proceed with my current situation. We bought a new build and after getting my boiler and unvented cylinder serviced my plumber raised the fact that he estimates the D2 discharge pipe to have a resistance flow length on 12m and as it's 22mm copper pipe this is not to code, it should be 28mm.
I contacted the developer who passed me straight to the plumber contractor who installed the system and after chasing the developer I finally heard from the plumber after a week.
They tells me that everything was signed off pre plaster and they'll be a certificate to prove this but mistakes can happen and he can't be sure on the length of the pipe without visiting the property and pulling up the floor to visually inspect the pipe.
Then comes the lies, he said machine bends don't deduct from the resistance flow as they are the same diameter compared to elbow bends that narrow even though G3 regs refers to elbows and bends.
He said they may have used 28mm under the floor even though the visible pipe at the tundish and exit are 22mm, and you can't use 28mm behind dot and dab as it's too big.
They want to be able to put this right but this will mean pulling up floors or putting holes in the ceiling and ripping part of a wall out.
I'm yet to get a response from the developer and I'm not sure how to proceed, should I be contacting the NHBC or some kind of building regulator to report this? There are also other houses of the same design on the estate that are no doubt also affected. We've had no end of troubles with the developer I'm fed up with dealing with thier contractors.
Any advice on how to proceed would be great as I'm just lost now. Thanks
I contacted the developer who passed me straight to the plumber contractor who installed the system and after chasing the developer I finally heard from the plumber after a week.
They tells me that everything was signed off pre plaster and they'll be a certificate to prove this but mistakes can happen and he can't be sure on the length of the pipe without visiting the property and pulling up the floor to visually inspect the pipe.
Then comes the lies, he said machine bends don't deduct from the resistance flow as they are the same diameter compared to elbow bends that narrow even though G3 regs refers to elbows and bends.
He said they may have used 28mm under the floor even though the visible pipe at the tundish and exit are 22mm, and you can't use 28mm behind dot and dab as it's too big.
They want to be able to put this right but this will mean pulling up floors or putting holes in the ceiling and ripping part of a wall out.
I'm yet to get a response from the developer and I'm not sure how to proceed, should I be contacting the NHBC or some kind of building regulator to report this? There are also other houses of the same design on the estate that are no doubt also affected. We've had no end of troubles with the developer I'm fed up with dealing with thier contractors.
Any advice on how to proceed would be great as I'm just lost now. Thanks
