Chimney costs for timber frame airtight house

dbeermat93

Hi
I am installing an inset stove/backboiler plus an ordinary free standing or inset stove in my house and I am considering installing the stainless steel flue extract which will be insultated and have a surround outside of this to hide the flue.the reason I am not putting in a standard clay chimney type system is due to there poor insulation values plus i do not want drafts coming in as i am going airtight.
No floors have been poured yet and only a base for the two fireplaces have been put down which are five feet wide respectivly.I would like to know what costings are involved in building the two chimneys between clay stacks,back filling,blocks etc.heights of both chimneys are 6.5 and 7.12 metres.Some people have said that you can knock a couple of thousand off the build.I just need to compare the difference in price between the stainless insulated flue type with surround against the standard chimney build.
Any help help or ideas are welcome.

Cheers.

homewardbound11

Hi ,
I have attached my post from earlier in the day and would love to hear from you on the inset fireplace and stove. I had a few queries that you might have came across. Please pm me on your setup as I am in exactly the same position as you. I.E. I have an inset fireplace that is closed combustion with external air in a standard chimney/clay liner at 200mm. The second living room area is where i have trouble. I would like to use a pellet stove with a twin flue but above ridge level want it to look like a standard chimney. Pm if you can.


Hi,
I am looking for a pellet stove for a timer frame house. Really it is for space heating. The catch is that the house will be air tight and draw air in externally. I have a few queries that people might clear up for my.

-) Is it possible to get a room sealed pellet stove for closed combustion.
-) Am I limited to 5kw stove as per building regulations as I believe if I go over 5kw, Then I might need an external air vent on the wall.

-) Flues, and chimneys. Can a twin wall flue be sufficient if the flue or chimney is internal to the stud. I am trying to find out if a twin flue or a free standing chimney breast that confirms to the regulationsfor timberframe. Really I would like to have a lined chimney so externally at ridge level it looks like a conventiona breast but internally it will be free standing or at least timberframe ties to attach it to the frame.

I hope I explained this correctly

scuzz

Hi Folks,
I was also hoping to install a wood stove in an airtight Timber Frame build with seperate external air supply. I was hoping to avoid the heat losses/draughts etc would a conventional chimney. The twin wall flue in our case would have to be brought straight up through the house and then elbowed to bring it a few feet away from the ridge, making this a very expensive option. I was looking also at a company called <SNIP> who offer a solution for a free standing stove, have no pricing as of yet but i'm sure will also be expensive. I would dearly like to hear how you progressed on this or any insight or feedback would be welcome. I have been given names of some stove manufacturers such as <SNIP> among others as options for what I'm trying to achieve. BTW was persuaded to avoid UFH thus we will be using rads sized correctly for low energy with a <SNIP> condensing oil boiler. Me thinks to spec a stove with correct output split to heat water for rads and also space heating with the added complexity of plumbing might be a stretch too far. Thus Stove will be for space heating only. Using solar for dhw only. Re: Ventilation was hoping to use <SNIP> wall vents thus no MVHR.

Mod Edit: Read the charter please, do not name a company on thread.

Carlow52

scuzz wrote: »

Hi Folks,
I was also hoping to install a wood stove in an airtight Timber Frame build with seperate external air supply. I was hoping to avoid the heat losses/draughts etc would a conventional chimney. The twin wall flue in our case would have to be brought straight up through the house and then elbowed to bring it a few feet away from the ridge, making this a very expensive option. I was looking also at a company called <SNIP> who offer a solution for a free standing stove, have no pricing as of yet but i'm sure will also be expensive. I would dearly like to hear how you progressed on this or any insight or feedback would be welcome. I have been given names of some stove manufacturers such as <SNIP> among others as options for what I'm trying to achieve. BTW was persuaded to avoid UFH thus we will be using rads sized correctly for low energy with a <SNIP> condensing oil boiler. Me thinks to spec a stove with correct output split to heat water for rads and also space heating with the added complexity of plumbing might be a stretch too far. Thus Stove will be for space heating only. Using solar for dhw only. Re: Ventilation was hoping to use <SNIP> wall vents thus no MVHR.

IMO:
Thus Stove will be for space heating only.: good idea

..added complexity.. correct.

There are alternatives to the normal <SNIP> system.

The normal <SNIP> system is a glazed liner inside an outer casing with glass fibre in between.

<SNIP> also do this alternative: AFAIK they own loads of different chimney brands:)
see here:
<SNIP>

I used the volcanic ash alternative and it is a super job.

PM me if u need any specific names

Mod edit: Company names on thread is a no-no.