Alternative chimney to twin wall flue for stove retrofit

batman1

Planning rear extension and hope to fit a stove in the existing room in. The existing room has no chimney so looking at twin wall system. However , the Mrs is against the idea as we have blown cellulose in the attic and after a recent fire locally caused by the flue in an attic the fear is understandably compounded.

A friend suggested I look at a lightweight block chimney system (perla?)as they appear better /safer and might suit better and perhaps allay any fears.

Has anyone used them or are they even suitable for retrofitting ? It would be close to the centre of the house, so close to the ridge and up against a block wall/corner. It's a dormer.

wired to the moon

these are the chimney systems we use in most timber frame houses.yes they can be retrofitted to accommodate a stove.they are not a bad system,but at the end of the day..they are only as good as the lads that build them!!make sure the brickie fills all joints,inside and outside and uses the correct fire cement to join the flues...with no voids..the fire cement comes in tubes like silicone and comes with the chimney pack.tie it in well to the existing block work and get it as close as you can to the ridge so you can tie it into that also.as i said...make sure it is built right and you wont have any problems.as a qualified bricklayer,i built 100s of these so any questions just ask.

batman1

wired to the moon wrote: »

these are the chimney systems we use in most timber frame houses.yes they can be retrofitted to accommodate a stove.they are not a bad system,but at the end of the day..they are only as good as the lads that build them!!make sure the brickie fills all joints,inside and outside and uses the correct fire cement to join the flues...with no voids..the fire cement comes in tubes like silicone and comes with the chimney pack.tie it in well to the existing block work and get it as close as you can to the ridge so you can tie it into that also.as i said...make sure it is built right and you wont have any problems.as a qualified bricklayer,i built 100s of these so any questions just ask.

Thanks for that. I'm guessing such structures require a foundation to be laid ?

Also, in terms of size am I looking at a 'standard' size fireplace or does it make for a smaller brace etc for a stove ?

Finally, any idea of cost ?

893bet

Poujoulaut might have an option for you but expect to pay £££££.

Also have a look at Lagan chimneys,http://www.laganchimneysystems.com/chimney_systems.html

And schiedel chimneys

http://www.schiedel.co.uk/products/ceramic-products-and-systems/chimney-systems/prefabricated-chimney

wired to the moon

yes a footing in the foundation would be required.the breast of the chimney can be altered to suit a stove.just alter it on the bottom courses.it was schiedel systems we used and the the breast was made up of special blocks,not all one precast like in the link above.the breasts were around 1640mm wide by 450mm deep and the stacks were 440mm square. cant be certain of the price but they are around €1200-€1500.2 brickies should build 1 with ease over the course of 3 days.

hexosan

Schiedel cost approx €180 per meter

wired to the moon

you could always run a stove flue up in to the attic and box around it with aluminium stud and sheet with fire cement board.it would be cheaper and less work.the chimney systems are really just to speed up the work.ideal for big housing estates etc.