Gas installations into roofspace - heating gurus get in herw

Buffman

Buffman

Buffman

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Hi all I recently purchased a bungalow with a condemned boiler and I'm having it replaced... I'm informed I need a new gas pipe (which I'm fine with), and the cheapest quote has said they're going to run it through the roof space. Other suppliers have suggested running it through the floor is preferred, Does anyone know anything about this subject?

British gas salesman (Note not engineer/fitter) suggested going through the roof void goes against the gas regulations?
My property is a 1 story bungalow with a roof space for storage and I would like the pipe to effectively go across the length of the house (from the garage to the kitchen)

Any help is much appreciated!
(note, any works will be by gas accredited installer etc, just the quote through the roof seemed a lot cheaper)
 
Never have I heard of a gas pipe going through the roof!
Easiest most effective way is ran in alcathene outside the property in a trench and connected to mains (usually done by the supplier) then taken in in copper under the floor to where you need. (Usually done by a gas safe plumber)
 
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Not a gas man but think there was a change in regs in September maybe?

Any new pipework in a loft may require additional ventilation so gas wouldn't build up if the pipe leaked.
If your loft currently doesn't have ventilation and has sarking so the loft isn't breathable.

Gas pipes running through a loft is pretty normal especially with bungalows concrete floors etc and supply to boilers fitted in the loft
 
Gas pipe in our 2-bed terrace (80s built) goes up to loft from meter, across to the other side of the house, then down to the boiler and hob.
 
Trifid said:
Sounds a bit tricky to install a boiler in the loft space if you're not allowed to run gas through it!
Click to expand...

Sorry, to confirm the boiler will be installed in the kitchen (and hidden inside a cabinet), with the pipes through the roof.

Why would a roof void require ventilation and my flooring not? (ie my sub floor isn't ventilated, and the kitchen sub floor is concrete?)

Keep the answers coming though!

For info the garage is directly adjacent/north of the bedrooms in the following photo, and I have a susoended floor throughout except the kitchen which is concrete
mBX7pV1.jpg
 
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The concrete hole would be a lot smaller than an entire loft filled with gas... it is the risk of fire/explosion that gas feed into an attic would attract. I however, have no idea if the regs do limit you in this way.
 
Surely no worse than an entire unventilated sub floor filling with gas?

(I imagine my roof is somewhat ventilated due to its age/condition! :o)

Anyone a gas fitter/know the regs?
 
The Craig said:
Surely no worse than an entire unventilated sub floor filling with gas?

(I imagine my roof is somewhat ventilated due to its age/condition! :o)

Anyone a gas fitter/know the regs?
Click to expand...

The regs are just changing/changed regarding gas pipe installations in lofts. Not been briefed on this yet but these are the details.

post image online

Worst case it seems a couple of vents fitted in the loft. Best case nothing required. If it's easier and cheaper piping in loft a couple of vents isn't going to drastically affect the price. Hope that helps.
 
We had our new condensing combi boiler put into the roof space, relocating from the old open tanked based system in the centre of the house.

Needed a new thicker gas pipe. Link to the soil pipe for the condensation output. The roof has two sets of insulation laid but there is roof ventilation along the sides and the top.

I've put a CO alarm up there too - the last one up there is the reason we're still here as the old boiler fell to pieces where the flue pipe joins the boiler .. and so the CO in the roof caused the alarm to go off.

The Bosch CDi boiler has a couple of neat things - firstly if the temps of the boiler get below about 8 degrees then the boiler will start circulating water (regardless of heating) and if below 5 then it will start heating itself and the water in the pipes to prevent it freezing. Nice feature considering it's in the roof and so can be tens of degrees difference between the thermostat and the rood space.
 
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I had new gas pipe installed 2 years ago when I had combi put in. It goes up front of house from gas meter, across the loft then down into back bedroom where combi boiler is in the old airing cupboard. House is 100 years old and there is no ventilation up there.
 
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