locoboy
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| posted on 5/4/07 at 10:42 AM |
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copper pipes and concrete flooring
I am having an outhouse bit of my house turned into a livable space at the moment and i am going to be putting a radiator in there.
It needs a new concrete floor laying and i want to put the pipes in the floor.
I know that concrete can have some pretty strong corosive properties so should i cover the copper pipes with anything prior to having the floor poured
over them?
If so whats best?
Thanks
ATB
Locoboy
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grahamgg
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| posted on 5/4/07 at 10:46 AM |
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you can get copper pipe with a plastic covering .not sure if you buy it already fitted or if you buy it separate,sure someone else will know
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graememk
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| posted on 5/4/07 at 10:47 AM |
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why not use this new plastic stuff ?
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locoboy
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| posted on 5/4/07 at 10:54 AM |
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I already have the copper pipe
ATB
Locoboy
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02GF74
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| posted on 5/4/07 at 11:02 AM |
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can you not make a channel with a cover? I often wonder about this and what one would do if the pipe springs a leak. (if you do put the pipe dwon
first, fill with water to test for leaks prior to putting the concrete)
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BMF
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| posted on 5/4/07 at 11:07 AM |
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You must cover with a protective lagging, normally a PVC.
Can get it from plumbers merchants
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Aboardman
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| posted on 5/4/07 at 11:14 AM |
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or use plastic water pipe 20/25mm dia and run the pipes in that.
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nitram38
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| posted on 5/4/07 at 11:17 AM |
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Look for Denso tape.
It is a horrible sticky bandage, but will protect your pipes.
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BKLOCO
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| posted on 5/4/07 at 11:17 AM |
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Wrap the pipes in "Denzo" tape
Experience is what you get when you don't get what you want!!! 
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BKLOCO
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| posted on 5/4/07 at 11:18 AM |
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You beat me to it and spelt it correctly too LOL
Experience is what you get when you don't get what you want!!!
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jimgiblett
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| posted on 5/4/07 at 11:20 AM |
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You will need some room for thermal expansion. We had to get floor dug up because someone had laid CH pipes directly into concrete and they had
fractured.
I would probably use the closed cell insulating material and then cover with PVC.
- Jim
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BenB
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| posted on 5/4/07 at 11:33 AM |
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I'd put them inside a plastic pipe as mentioned... If you use a big-ish pipe you might even have room left in case you wanted to put some wire /
optic fibre etc into the outbuilding later on (though trying to fish it through would be fun!!!)
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Hellfire
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| posted on 5/4/07 at 11:38 AM |
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I'd lay them in a narrow channel and backfill with sand before putting a 50mm concrete screed above. This should protect them and allow
relatively easy access to them in the future if need be.
Phil
[Edited on 5-4-07 by Hellfire]
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jimgiblett
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| posted on 5/4/07 at 11:42 AM |
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quote:
Originally posted by BenB
I'd put them inside a plastic pipe as mentioned... If you use a big-ish pipe you might even have room left in case you wanted to put some wire /
optic fibre etc into the outbuilding later on (though trying to fish it through would be fun!!!)
Leave a piece of string in the pipe so you could drag stuff through.
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DaveFJ
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| posted on 5/4/07 at 11:49 AM |
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I had this issue a while back. Basically when the extension to my house was built the cowboys just laid the copper pipes intoi the concrete and over a
period of 15 years they had corroded until the pipes finally gave way.
when i chipped away the concrete I found loads of pin prick holes in the pipe
I have since had the whole lot replaced by a plumber who aso used copper pipe butwrapped it all in hessian sacking before recovering with concrete,
apparently this is accepted practice these days....
HTH
Dave
"In Support of Help the Heroes" - Always
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coozer
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| posted on 5/4/07 at 12:10 PM |
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Put some plastic pipes in the concrete with the copper ones inside.
I buried mine in the concrete with sand around the pipe then had to chisel the floor up when I had a leak
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DarrenW
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| posted on 5/4/07 at 12:15 PM |
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All of the pipes i have seen encased in concrete were plastic wrapped and then covered with sand. In last house no sand but they did have some
insulation type material around them (as well as plastic wrapped).Plumbers merchants will probs be able to advise and supply correct stuff. Maybe even
a chat to building regs officer to find out what he would recommend (there are probs some latest regs you may need to conform to).
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Aboardman
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| posted on 5/4/07 at 12:32 PM |
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i know when i had to put somepipe in for my brother he got the copper pipes with the plastic coating, trouble is they do not fit pipe benders so had
to resort to pipe springs.
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pawgrp
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| posted on 5/4/07 at 12:46 PM |
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Put the pipe in purpose made insulation, tape up the seam and concrete over. The insulation will protect the pipe and will stop heat loss into the
floor.
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MikeRJ
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| posted on 5/4/07 at 04:31 PM |
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If the floor is going to be covered it's probably worth marking out the location of the pipes on top of the concrete for future reference. A
friend of mine managed to nail through a copper gas pipe layed into his concrete floor whilst fitting gripper strips for a carpet
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Danozeman
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| posted on 5/4/07 at 08:16 PM |
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quote:
can you not make a channel with a cover? I often wonder about this and what one would do if the pipe springs a leak. (if you do put the pipe dwon
first, fill with water to test for leaks prior to putting the concrete)
My mum and dad had copper pipes under the floor. The had a slight leak which washed the sand/dirt away around the footing etc and the floor and wall
dropped, shering the pipe off with it. Major work had to be done on the house costing about 30 grand through the insurance.
Its worth doing it properly. Id make a channel to run the pipes in and put the pipes withing a plastic pipe.
Dan
Built the purple peril!! Let the modifications begin!!
http://www.eastangliankitcars.co.uk
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