Stove flexi flue.

feckincrazy

Hi, in the last month i have after installing a woodburning stove in my own house. It was just a slate chimney and i piped the stove into this chimney. I lit it and was very pleased with it. I know my own chimney is grand. Ive been asked to put in another stove now. The chimney is much the same as my own only she wants to line it. Thats no problem i seel But what i want to know is the following.

1. What way does the flexi flue come in meter lengths that have to be joined or a continous length.

2. In order to use a flexi liner do join the pipe to back of the stove of join it to a pipe that comes out from the back of the stove.

3. Do i have to have 90 choke pipe on stove.

4. The chimney is around 9 meters in height would it be sufficent to tie flexi liner at cap of chimney with locking plate or would it have to be tied in any other way.

5. Is it a big job to clean out flexi liner.

6. Would a flexi liner be capable of taking the heat from the woodburner.

Cheers!

Stove Fan

feckincrazy wrote: »

Hi, in the last month i have after installing a woodburning stove in my own house. It was just a slate chimney and i piped the stove into this chimney. I lit it and was very pleased with it. I know my own chimney is grand. Ive been asked to put in another stove now. The chimney is much the same as my own only she wants to line it. Thats no problem i seel But what i want to know is the following.

1. What way does the flexi flue come in meter lengths that have to be joined or a continous length. Its sold buy the metre but cut to whatever length you require.

2. In order to use a flexi liner do join the pipe to back of the stove of join it to a pipe that comes out from the back of the stove. You join the flexible flue liner to a rigid length of flue pipe connected to the stove using an adapter for ridgid pipe to flexible liner. You can't join the liner directly to the stove.

3. Do i have to have 90 choke pipe on stove. No. It's best to avoid 90 degree bends and either fit a T piece on the rear outlet of the stove with sweeping fitment on the lower part of the T. I prefer to not use the rear flue as soot can build up in the short 6inch horizontal part.

4. The chimney is around 9 meters in height would it be sufficent to tie flexi liner at cap of chimney with locking plate or would it have to be tied in any other way. Sounds fine to me but if the chimney is very large you may want to backfill with vermiculite to give the liner some rigidity. The steel closure plate should give the flue some rigidity

5. Is it a big job to clean out flexi liner.

No, far from it!! A properly installed flue liner with a good sweeping access is a 10 minute job to clean for a proffesional.

6. Would a flexi liner be capable of taking the heat from the woodburner.

Yes. If only woodburning 316 grade stainless steel liner would be sufficient but if using coal or smokeless fit 904 grade. If cost is not an issue fit 904 grade.

Cheers!

Stove Fan:)

feckincrazy

eh tell me this what are them flexi flies made from stainless steel or what other type of material? I want to put two flexi flues from 2 stoves to the one chimney. can a locking place/bracket be got to hold the 2 flues in place or would I have to get somthing fabricated.

Stove Fan

feckincrazy wrote: »

eh tell me this what are them flexi flies made from stainless steel or what other type of material? I want to put two flexi flues from 2 stoves to the one chimney. can a locking place/bracket be got to hold the 2 flues in place or would I have to get somthing fabricated.

They are made from stainless steel. You want to put 2 stainless steel liners down one chimney to serve 2 stoves? To make the one chimney into two lined flues. Sounds fine to me. You could just use 2 top plates and clamps and trim the plate to fit the chimney.

Stove Fan:)

feckincrazy

The chimney is serving two fires. one on ground floor and one on first floor. if i put a flue in the ground floor and i lit the fire upstairs id be afraid id damage the exterior of flue if i lit the fire With sparks and heat from fire.

Stove Fan

feckincrazy wrote: »

The chimney is serving two fires. one on ground floor and one on first floor. if i put a flue in the ground floor and i lit the fire upstairs id be afraid id damage the exterior of flue if i lit the fire With sparks and heat from fire.

Are these open fires or stoves? Is the chimney and 2 fireplaces original with their own seperate flues? This is normally how they would be built. How many chimney pots are on this chimney? Does smoke come out of one pot only when each fire is lit seperately? It's most unusual to have a shared chimney unless the house is very very old. Any chance of taking some pictures looking up the chimneys?

Has anyone added another stove or fireplace into a shared chimney? There is no problem that I could see in using one big chimney as a passage to install seperate flexi flues for each stove/ fireplace. You can't use the upstairs fireplace if it has a shared flue with the lower chimney unlined as smoke and fumes could vent down and come out of the downstairs chimneybreast.
There should never be 2 stoves/fireplaces sharing a chimney unlined.

If you want to utilise a large chimney each seperate stoves/fireplaces must have their own individual stainless steel liner installed from the stove outlet to the top of the chimney so that there is no seepage of fumes from one flue to the other.

Stove Fan:)

feckincrazy

Is well over a hundred years old the structure old slate open unlined chimeny.

A few questions was over there today.

1. Im confined for space in height. What im thinking of doing is droping down flexi flue and from the top of te stove take about a 2ft flue. And join the flexi flue to the flue. Do i have to have a 90 degree bend to create draw?

2. In order to clean it out flexi flue what im thinking of doing is lifting out stove and disconecting stove flue and flexi liner. Would this sound workable to you or would it be a disaster! The fireplace was only built around a 3 years ago so i dont want to pull it outl i havnt space for one of them sootdoors.

Any advice is apreciated.