Search the forum,

Discuss Underfloor gas piping to fireplace in the Plumbing Jobs | The Job-board area at PlumbersForums.net

J

Jez_uk1

Hi all

Sorry for long post.

I live in a house that's about 25 years old. There is an old gas fireplace that I having professionally removed (don't worry I'm not touching anything gas related!). It's the type of fire that stands on 4 legs and neatly sits inside the fireplace area.

At the back there is a copper pipe that rises through the concrete base, into a T-piece, and then horizontally around the back before eventually reducing into smaller diameter piping that snakes around the side to the front and into the control unit for the fire via a shutoff valve.

During my last gas safe inspection I believe they did a bit of resoldering/reflow(?) on that T-piece. Because the gas fire unit just sits on the floor, it is evident that this has probably moved or wiggled around a bit over the years and probably put a bit of stress on this T-piece. Nevertheless that was dealt with during the last inspection (I don't know if it was actually leaking, but there was a bit of soldering work done).

Anyway, that is just a bit of background. The fireplace is getting removed and the only option will be to seal off the end of the copper pipe because the other end is currently not accessible.

My concern is that if there has been some wiggle over the years, could this be transferred under-floor to a below floor joint? From a completely layman's perspective I would imagine that only pipe bending would be allowed with underfloor pipes and certainly no soldering or types of joint that can't could potentially degrade and can't be inspected? What I am trying to say is would that vertical pipe that rises up into the fireplace have a 90 degree bend to horizontal below the fireplace and not some sort of soldered in joint that could be subjected to fatigue?

Would I be correct in saying this or should I get a fiber optic inspection done below the base of the fireplace or worse still have to pull some heavy stuff up?

This is not so much in the event that there are currently no leaks. It stems from my paranoia that any underfloor pipe could need inspection...

Thanks very much and I hope this makes sense.

Jeremy
 
Is the whole floor a concrete base? There’s many different ways of building houses and one method is wooden joists and floorboards which will mean just the area around the fireplace is concrete for fire safety. You can then lift a board and cap off the pipe away from the concrete section.

Where the house has a fully concrete floor
its unusual for the gas pipe to run a long distance in the concrete due to the way houses are built, you find the first fix of gas pipes is done after the concrete base is laid and finished.
 
Thanks to both for the feedback

I had an engineer in today to remove the fireplace and he has soldered on a cap. This is temporary until I have a new boiler and pipework run in. He did a full tightness test as well.

It is concrete around the fire and then wooden floor for the rest of the room. Hopefully nothing will happen to that cap! (just my paranoia!)

Thanks again

IMG_20190326_132725.jpg
 
Had this a few times- as someone said above the best way is to lift a board near the fire and get your plumber to cap it off there.

If you are having the fireplace removed there is a chance that you could damage the pipe when lifting the hearth or breaking mortar.
 

Reply to Underfloor gas piping to fireplace in the Plumbing Jobs | The Job-board area at PlumbersForums.net

Similar plumbing topics

I was stupid enough not to check the position of the pipes under the tiles when installing a toilet and drilled right through the center of a 16 mm copper water pipe. I exposed the pipe by removing a ~30cm section of the plastic sleeve and a ~10 cm section of the pipe around the hole. Several...
Replies
0
Views
168
Hi, basic question, any insight much appreciated. Looking to have an outdoor tap in my front porch fed from 15mm pex coming up from suspended floor. Pic 1 is inside porch, pex temporarily clipped to give an idea of pipe placement (ignore shoddy blockwork of booted cowboy builder!), Pic 2 is...
Replies
6
Views
217
Hello all, I’m replacing a concrete paving slab patio in the back yard. The original patio used 50mm deep concrete slabs on hardcore & sand. I’m planning to pour a 100mm deep concrete patio on 100mm hardcore. In order to achieve the same final height to line up with the rest of the patio, I...
Replies
6
Views
212
We run a community village hall and have a large kitchen provided for the use of hirers. This includes a Lincat SLR9 gas cooker which I believe is a 23.8Kw appliance with all six burners and oven on max. This was installed some 10 years ago and has passed all subsequent Gas Safety inspections as...
Replies
4
Views
372
Hi, Can anyone advise as to why the cold water to my bathroom keeps airlocking? This originally happened about 12 months ago and has happened 3-4 times since. It’s an upstairs bathroom, fed from a tank in the attic. The tank is about 8 Meters away and feeds a bath, sink and toilet. The tank...
Replies
9
Views
301
Creating content since 2001. Untold Media.

Newest Plumbing Threads

Back
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock