Not your usual woodburner problem.

[ibrooks]

OK folks - looking for some ideas/advice here....

I'm installing a woodburner in the garage for some heat during the winter months. I'm sorted with planning permission and happy with building regs.

It's going to sit in a corner of the workshop but the problem is that the workshop is an extension on the rear of the original garage and there is a plastic water pipe and an armoured cable that came out of the ground and through the wall. These things won't make sharp turns so they were never tight in against the wall. When the floor slab was poured for the extension... Well they are now permanent fixtures. I'm going to need to protect them from the heat so I'm looking for ideas on the best way.

I'm planning to make what is effectively a low (maybe 18") table from an odd sized paving flag and a steel frame for the burner to sit on so the slab should give some thermal protection to the pipe and cable. I'm also thinking that I'll box them in in steel (maybe stainless with a nice pretty mirror finish to reflect heat). I'm wondering if it would be a good idea to fill the box with something and if so what. Possibilities that have crossed my mind are rock-wool or maybe vermiculite.

Whatcha reckon?

Iain

 

[MattF]

Personally, I'd use a shield/reflector and just allow for good airflow around it. Insulating materials will conduct more heat that free flowing air behind the shield/reflector will.

 

[garethp]

Both will be classed as flammable material and there is a minimum distance from the stove in the building regs - if the distance is less it won’t comply. Are the services now encased in the floor slab?

Otherwise some sort of heat shield and plenty of airflow!

 

[ibrooks]

The wire and the pipe come up out of the floor vertically and then turn to go through what was the rear wall of the garage horizontally. I hadn't thought of them being classed as flammable material but now that you mention it I suppose they are. @rse - might have to site the burner elsewhere and that'll mean moving the ring main wiring as it's all run around the internal wall on the surface in plastic conduit.

I'll have to sit the burner in it's intended spot and get a measuring stick out but I reckon I'm going to struggle to get the required distance without it being halfway into the arch between the two "rooms".

Need to go back and have another read of part J methinks.

Iain

 

[Shox Dr]

I installed a Stovax Riva insert stove that I boxed it stands 300mm off the marble slab and it's been that hot you cant stand within 10 foot of it for long, and the marble is still just warm. And that's rated at 8kw

So much so you can touch the underneath of the stove jacket

 

[urban]

I'm not sure about the pipe but the cable is rated for the current it can safely carry in the environment it was installed in, if you are exposing it to heat the current that cable can carry is reduced so in theory you need to put in a smaller fuse/MCB protecting that cable otherwise you risk an electrical fire.

However the temperatures mentioned above will probably melt the cable without any electricity running through it.

I'd definitely be thinking of where to relocate to.

A lot of the above is guess work, have you got any pics of where you intend to install the stove, might give a better idea of a solution to the problem.

 

[ibrooks]

Let's see if this works....

If it does then the white brickwork is the original building and the blockwork and the grey painted floor is the extension that was put up some years ago. I specifically don't want the burner right into the corner but I don't want it to stick very far out into the archway if at all possible (were the fire extinguishers are up the step). The burner is a Clarke barrel stove like the ones sold in Machinemart.

 

[Spark plug]

If you make your platform so the paveing slab sits above the cable and pipe you have nnothing to worry about. Because best part of the heat will rise it will stay quite cool down there.

 

[ibrooks]

Certainly that's the intention but the pipe and cable are going to have a heat shield as well.

Iain

 

[Paul the Wall]

I wouldnt box the pipe & cable in.
1. lets you keep an eye on it.
2. gives you a handy storage space for wood burning stove related stuff.

i know depending on how much stuff you chuck under there could be contradictory to point 1. but it works in my head.

 

[hippytyre]

You could dig down and re route those pipes/cables under the floor line then mortar over it. It would be a lot of work but you'd get your stove where you want it. Our just get some bricks and enclose them behind one skin maybe two bricks high.

 

[ibrooks]

I did wonder about encasing them in bricks but I think the metal shield is going to be the one. I'll leave it fairly open on the side away from the burner so that they get some airflow. I will probably be storing stuff related to the burner in the area and probably under it's platform/table/hearth and I think the boxing of the cable and pipe if anything will then serve a dual purpose of protecting them from radiated heat and from being thumped by stuff. I'll make it fairly easy to pop out so that I can keep an eye on them in the initial stages at least until I've built up some confidence that they aren't being melted by the heat.

The water pipe will likely be empty when the burner is in use as it's just buried under the garden so over winter it gets turned off in the house and drained to avoid any fun and games with freezing.

Iain

 

[octo0072000]

I did wonder about encasing them in bricks but I think the metal shield is going to be the one. I'll leave it fairly open on the side away from the burner so that they get some airflow. I will probably be storing stuff related to the burner in the area and probably under it's platform/table/hearth and I think the boxing of the cable and pipe if anything will then serve a dual purpose of protecting them from radiated heat and from being thumped by stuff. I'll make it fairly easy to pop out so that I can keep an eye on them in the initial stages at least until I've built up some confidence that they aren't being melted by the heat.

The water pipe will likely be empty when the burner is in use as it's just buried under the garden so over winter it gets turned off in the house and drained to avoid any fun and games with freezing.

Iain

use a 3x2 paving slap bricks at either side open at the front put you metal shield on top of paving use underneath as wood storage

 

[moose]

sorry I think I'm being a bit thick here, you want to put the stove in or near the corner where the pipe and electrics are? suggestion can you not use exhaust bandage, put on properly if will stop the heat, or what we have used on our boat is fire board, even the floor is a large flagstone with fire board on top and then we have put our tiles onto that, with the sides because it is a boat and we have two small GSD's and two cats we have three sides to protect the stove and animals falling onto ie during games etc, its a wooden frame with fire board facing the fire and ply on the outside, when the stove is cooking (bl**dy hot) the ply is still cold to touch.