In England and Wales this is covered by Section J of the Building Regulations, a guidance document which provides advice in relation to the safe installation of stoves. This document recommends ventilation via a permanently open vent of 300mm2/kW for the first 5kW of rated output and 850mm2/kW thereafter.
The parts, covers required to cap off or cover these various sized vents do not exist on the market therefore, stoves installers use a 5 inch or 125mm core drill to create an airbrick - the caps and covers for which are readily available. This size of airbrick covers ventilation requirements right up to the Country Kiln 8 and 38 18kw Woodburner and Multifuel stoves, our largest multi burners.
Ventilation or chimney smoke by a twin wall flue system should be a mimimum of 4.5m of chimney flue pipe ground to cowl.
It is essential that only one appliance is used per chimney shaft.
If you would like more details or assistance with the installation of a Country Kiln Wood Burning Stove please email your query to firstname.lastname@example.org (The Country Kiln team respond to all emails within 24 hours) or call 01560 483966 Monday to Friday 9am to 5pm GMT or Saturday 10am to 1pm