Workshop stove regulations

Flue and Chimney Design Service

Workshop stove installations and flue systems

Dedicated workshops that are not attached to domestic dwellings do not come under the same building regulations. The installation must be safe and be shown to work but does not need to adhere strictly to Document J recommendations.

One way of making a safe flue system is to run up to 2000mm inside the workshop in single skin flue pipe and then to shift to double skin for the roof penetration and the colder outside portion. Thus for the coldest part the flue is insulated and therefore the flue gasses are kept hotter and tar deposits are reduced.

Some workshop stove installations are entirely in single skin flue. The downside of this is that the flue gasses will cool quickly resulting in increased tar deposits in the chimney, and therefore increased risk of chimney fire. The other downside is that single skin flue pipe gets very hot so if the flue is running near wood then you will need to install considerable heat shielding. You should consider sweeping such a single skin chimney more frequently.

Running a single skin flue pipe through a wooden and / or flammable felt roof is not safe and should simply not be done.

Workshop stove insurance implications

Some of our workshop stove customers were required by insurers to make sure that they swept up all wood shavings and dust every day so as to minimise risk of fire spreading. We recommend that you contact your insurance company.

Go to the workshop stove installation design page.