Design, Convert And Build Work contd.

Environmental Preference Schedule Of Construction Elements Contd.

Environmental Preference Schedule Summary Adopted at The Fold – Shaded Grade Solutions were adopted at The Fold.

  Grade
Item Ultimate Aim Good Practice Acceptable Solution To Be Avoided
Builders Waste no export at all from site sorted into recyclable rubble /timber/metals etc burn waste indiscriminate use of skips
Foundations Local stone foundations with land drains around perimeter. Reduce thermal bridging to a minimum Reused brick or block with recycled aggregate on minimal strip footing new conc. block or new bricks on strip footing Trench fill or reinforced slab/raft foundation with new aggregate.
Drainage earthenware spun concrete – UPVC
Roof Insulation cellulose, sheep's wool or hemp/cotton with thermal broken timber I beams reused insulation boards mineral wool and expanded polystyrene PUR, foam insulation, extruded polystyrene
Floor Insulation Mineral wool,(glass wool & rockwool) Expanded polystyrene Foamed glass Perlite Extruded polystyrene PUR
Wall Insulation cellulose, cork, wood fibre boards or hemp/recycled cotton Mineral wool or EPS, Foamed glass PUR, extruded polystyrene
Walls (new) External Cob or earth, durable wood reused brick or stone new brick or concrete blocks made with recycled aggregate concrete blocks, aerated autoclaved concrete blocks, strong cement mortars, tropical wood, preserved wood
Walls (new) Internal Timber frame, clay block, cob or earth Sand lime blocks, flue-gas gypsum blocks Cellular Concrete blocks, natural gypsum blocks Concrete, strong cement mortars
Timber Frame External Wall Finishes Rain screen of durable timber from sustainable source Lime sand render on lightweight lath Fibre /cement sheet rain screen hard cement render/new brickwork screen
Internal Wall Finishes Local timber finish or lime-washed earth walls Lime or clay plaster on masonry, timber lath or wood wool slab Gypsum (natural or flue gas derived) plasterboard and plaster skim MDF, plastic boards
External Window Frames and Doors Sustainable European durable wood (oak) - Preferably English European sustainable softwood (certified), Boron treated & finished with environmentally friendly microporous finish ie Osmo or Auro Sustainable plywood & preserved wood UPVC & tropical wood
Internal Windows and Doors Durable home grown timber European sustainable softwood Sustainable plywood & preserved wood UPVC & tropical wood
Ground Floors Utilise existing concrete floor/suspended well insulated home grown wooden floor Where thermal mass required, solid concrete with recycled aggregate and stabilised earth screed Pre-cast concrete joists with concrete infill, reinforced in situ concrete slab floating chipboard floor above concrete slab
Upper Floors home grown timber joists with T & G timber floor boards on fibre board & plasterboard for sound deadening as above with plywood floor as above with strand board decking as above with chipboard floor or concrete
Roof Structure Cut roof trussed rafters flat roof concrete roof
Roof Finishes reused tile or shingles timber battens/shingles (larch or oak) new clay or concrete tiles fibre cement tiles, Canadian cedar shingles, copper sheet
Rainwater Goods bitumen lined timber guttering with recycled aluminium/cast iron down pipes new aluminium, zinc, galvanised steel or cast iron copper PVC
Plumbing Polybutylene pipes (Hep2O) above ground and polyethylene below ground. Internal wastes in polypropylene or polyethylene Stainless steel copper PVC internal wastes and lead
Timber Reused where possible home-grown FSC certified imported certified pre-treated unsourced
Hard Landscaping woodchip/bark or reused stone/brick/ concrete flags – no pointing concrete paviours made from recycled aggregate set in sand with no pointing, gravel new concrete or brick paviours with cement pointing, clay tiles tarmac
Fencing nativel broad leafed sp. or willow hedging timber fence/drystone wall or reused brick walls with lime mortar new brick/block wall concrete or treated timber
Preservative Treatments Avoid if unnecessary Local treatment with Borates where required Overall treatment Pre - Treated timber
Paint Finishes/Decorations untreated surface lime wash or water based mineral paints for walls and ceilings and wax and oil finishes Water based acrylic paints Paints with organic solvents and lead based etc
Sealants Coconut fibre, felt, sisal, lime. Mineral wool, PE tape, EPDM seals Elastomeric sealant with base filler PUR foam, sealant or tape
Lighting Design for natural light with reflective surfaces Low energy and LED Low voltage halogen Tungsten
Heating Super insulated and designed such that no heating system required Carbon neutral heating system Condenser boiler Electrical heating