Pipes in concrete

[Dave'o]

Under customers instructions I'll be feeding gas, central heating and hot/cold copper pipes partially under floorboards then through a concrete chase which will be screeded/concreted over.

What I need is some advise on protecting copper pipes in concrete.

I'm aware the lime in concrete is corrosive and have used denso tape on gas pipes before but whats the best way to protect hot and cold pipe from freezing and thermo expansion? I heard Denso tape will not work on hot pipes as the heat does something to the oils in the tape.

I was thinking about sleeving the copper in some plastic waste pipe. Would this be ok under concrete?

Also where do I find the regulations for protection of pipes in domestic properties.

 

[wigz]

water regs have guidelines and regs. pipes where there are joints need to be accessible in case anything fails. i recemtly ran central heating pipes in a concreter floor
i chased out a trench allowing for 2 x 15mm pipes and also for lagging and expansion. then cemented battern to either side of the trench and screwd board over the top then filled in with cement. nvq assesor came and assesed and said perfect 🙂

 

[Waterfall]

I find this post very worrying. I already have horrendous plumbing problems in my house.

You mention that concrete can be corrosive and yet I know for a fact that when alterations were done to my home in the early 80's, the gas pipes were brought to the hob under the kitchen floor and from there all the way through the dining room into the living room to the gas fire in the hearth.

My gas was disconnected some while ago because the man changing the meter detected a leak. My worry has always been that this leak could be under the floor and I just cannot face having everything ripped up, carpets, tiles etc

 

[SafeGasInstall]

waterfall just get gas man to re run everything ! forget about old carcass

 

[stevetheplumber]

poor old waterfall has many problems

 

[SafeGasInstall]

get some one in to re pipe thee hall place mate ! do not leave it till WINTER come

 

[Waterfall]

I once had a plumber in to try to solve a leak in one of the CH pumps but he phoned and said he couldn't tackle it as the pipework in the loft was just too confusing. The trouble is you see that the house was modernised in the early 80's and all was fine but then in 1989 and 1992 my ex (not a plumber) decided to add an extension etc. This involved moving the boiler and then adding more rads. Nothing was ever checked. I just assumed he knew what he was doing.

I now have all the problems but he is now remarried and living in a nice new, efficient house.

 

[SafeGasInstall]

you need to save up and get it all done at once and live normal life . or sell and move on if is to expansive to sort out !
if you need professional services list a location and we have members nationwide and some one will be with you to solve all
you needs !