ABSTRACT
Flues for wood/biomass burning appliances as for solid fuel; particular care is needed to allow for liners installed to cope with tars draining down flues; insulated flues tend to perform better with less condensate; existing traditional masonry chimneys are prone to tar leakage and staining. Insulated and draught-sealed external doors and frames are available finished in aluminium, steel, GRP and timber, with multi-point locking mechanisms for security and effective weather resistance. A pocket door is a system of building a counter frame which is then integrated with stud wall construction, either timber or metal. Standard windows listed below are manufactured in softwood, softwood with aluminium cladding, hardwood, thermally broken aluminium and steel, and in PVC in a wide range of sizes and types. Traditional double hung sashes hung on lead weights in boxes can be made to any size, though double-glazed sashes are restricted by the weight of the glass that can be balanced by the sash weights.
