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TIMBER CONSTRUCTION
  • For painted conservatories and roof lanterns our standard roof and frame construction is in Sapele Mahogany, with the door and window leaves in Idigbo. Both hardwoods, these timbers display excellent properties of durability and paint adhesion.
  • For non painted conservatories and roof lanterns we recommend either Oak or Iroko construction.
  • GLAZED ROOFS
  • We build to no fixed roof pitches. The pitch is set as appropriate to each design and as the constraints of the site allow.
  • Our roofs are constructed from delicately moulded 45mm section glazing bars (rafters), hips, valleys, profiled roof plates, and substantial ridge and wall plates.
  • We offer a range roof ornamentation:- turned timber finials, cast metal finials, cast metal ridge cresting and profiled timber cresting.
  • Where specified, gable designs can include intricate radial or tracery glazing patterns, all in individually shaped true-divided panes or applied or genuine leaded light panes.
  • Where specified, feature lanterns (surmounting a conservatory roof), and independent roof lanterns, can include glazed side-frames. The lantern side-frame windows can include intricate radial or tracery glazing patterns, all in individually shaped true-divided panes or applied or genuine leaded light panes.
  • When required, the roof construction is augmented by internal roof tie bars, cast metal braces and timber encased steel framing.
  • Recessed electrical conduit channels with flush fitting de-mountable access covers, are incorporated within the underside of roof ridges.
  • ROOF VENTILATION (an essential component of glazed roof design)
  • Roof ventilation is provided by ridge mounted opening lights (ventilators), operated either manually by worm-screw openers and an elegant hand pole, or electronically by discreet chain actuated openers. The latter can be specified with variable thermostatic control, rain sensor setting and manual override.
  • Where ridge mounted opening lights cannot be specified, we offer alternative means of roof ventilation:- mechanical fan housed within a roof pinnacle; passive trickle vents within a roof ridge; top-hung opening windows within lantern side-frames.
  • FLAT ROOF (where specified surmounting or adjacent to a glazed roof)
  • Our preferred flat roof construction is of the warm deck type, laid to falls. The construction consists of a carcass of preservative treated Redwood joists, premium brand high-performance foil backed insulation, firring pieces, external quality ply deck and weathering up stand. Mild steel channels and/or I-beams are incorporated where necessary.
  • The flat roof exterior is prepared to accept a choice of weathering finishes:- heavy gauge aluminium; code-5 lead; three-coat bitumen asphalt.
  • The flat roof interior is prepared to accept a choice of finishes:- premium grade ply; tongue and grooved match boarding; builders work plasterboard and skimmed plaster finish.
  • RAINWATER GOODS (gutters and down pipes)
  • All guttering is in heavy-gauge aluminium.
  • Glazed roof elevations drain externally into large section ogee-pattern cornice guttering, essentially laid level with discreet internal joints.
  • Where adjacent to new or existing structures, or where an entablature is specified above the glazed wall-frames (typical of orangeries), the glazed roof elevations drain into substantial aluminium-lined parapet/box guttering, laid to falls and incorporating stepped junctions. Beneath these gutters is the structural timber carcassing (preservative treated Redwood), mild steel bracketing and mild steel channelling that support the adjacent roof plate and the gutters themselves. The internal vertical face of this assembly is finished in profiled MDF or recessed moulded panelling. The internal underside of this assembly is finished in premium grade ply or builders work plasterboard and skimmed plaster finish.
  • Rainwater is discharged by PVC down pipes (aluminium to order), and where appropriate aluminium hoppers.
  • WALL-FRAME (doors and windows plus frame assembly)
  • Our wall-frames are constructed from 92mm section rebated jambs, head rails, and transoms, and substantial mid-sills and thresholds.
  • Wall-frames are sub-divided into an arrangement of bays, as defined by the structural jambs. Within each bay all door and window leaves are individually framed.
  • Door and window leaves can include radial or tracery glazing patterns, either in individually shaped true-divided panes, or applied or genuine leaded light panes.
  • The wall-frames can include a clerestorey – a rise of individually framed windows above a transom over the doors and windows. The arrangement of the clerestorey frame typically follows that of the doors and windows below. Clerestorey window leaves can be specified openable.
  • Clerestorey window leaves can include intricate radial or tracery glazing patterns, either in individually shaped true-divided panes, or applied or genuine leaded light panes.
  • Doors can be either inward or outward opening and wherever possible are specified to open through 180 degrees.
  • Opening window leaves can be either top or side-hung outward-opening.
  • A generous window board (window sill), is fitted internally capping the builders work masonry base.
  • The wall-frame jambs can be specified to include enhancements:- internal and external pilasters; corbels; stop-chamfered profiles.
  • The wall frame can be specified to include a substantial profiled entablature. (Typical of orangery designs). The timber topside of the entablature is dressed in code-5 lead.
  • The wall-frames can be specified to include a substantial timber base, panelled both sides and thermally insulated. (Instead of builders work dwarf walls).
  • The wall-frames can be specified to include traditional counter-balanced box-sash window frames.
  • Our rebated wall-frames are grooved to accept patent draught seals.
  • GLAZING (a range of glazing specifications to suit individual circumstances)
  • Roof:- for glazing units less than 2400mm in length, the double-glazing units comprise two leaves of 4mm clear toughened safety glass, a 16mm cavity, and include Low-emissivity heat reflective coating to the cavity face of the inner leaf. The thermal U-value of roof glazing units is 1:7.
    or
  • Roof:- for glazing units greater than 2400mm in length, the double-glazing units comprise two leaves of 6mm clear toughened safety glass, a 12mm cavity, and include Low-emissivity heat reflective coating to the cavity face of the inner leaf. The thermal U-value of roof glazing units is 1:7.
  • Wall-frames, lantern side-frames and gables with glazing patterns formed in true-divided panes - glazing units are retained with profiled beads internally fixed into 34mm rebated timber glazing bars - have sealed double-glazing units made in individually-shaped panes, comprising two leaves of 4mm clear toughened safety glass (float glass above transom height), a 12mm cavity, and include Low-emissivity heat reflective coating to the cavity face of the inner leaf. The thermal U-value of these units is 1:9.
    or
  • Wall-frames, lantern side-frames and gables with glazing patterns formed in externally applied timber glazing bars - the glazing units are continuous between a 26mm profiled timber glazing bar internally (without glazing rebate tongues), and corresponding 26mm applied timber glazing bar externally - have sealed double-glazing units comprising two leaves of 4mm clear toughened safety glass (float glass above transom height), a 12mm cavity, and include Low-emissivity heat reflective coating to the cavity face of the inner leaf. Within the glazing unit the glazing pattern is repeated with matching spacers to those forming the unit’s sealed edges. The thermal U-value of window and door glazing units is 1:9. (Internally, the timber glazing bars are traditionally profiled).
    or
  • Wall-frames and lantern side-frames are single-glazed in individually shaped panes of 4mm clear toughened safety glass, retained with profiled beads internally fixed into 22mm rebated glazing bars.
    or
  • Genuine formed single-glazed leaded light panes, or applied pattern leaded double-glazed panes are also available.
  • FINISHES AND PREPARATIONS
  • All timber roof and wall frame components are spray shop prepared to undercoat finish only. Door thresholds are normally mahogany-stained.
  • Glazed roof elevations are pre-finished externally. The roof double-glazing units are secured with aluminium cappings pre-finished in two-pack spray finish.
  • Ogee-pattern cornice gutters are pre-finished in two-pack spray finish.
  • Parapet/box gutters are pre-finished in two-pack spray finish.
  • The exterior finish colour may be chosen from our pallette of twelve standard colours. The supply only of matching finish coat paint for the exterior frames is included.
  • Code-5 lead is supplied and fitted weathering the abutment of our buildings to adjacent structures.
  • IRONMONGERY (cast polished brass, satin chrome plate or bronze finish)
    Pairs of doors are fitted with:-
  • 4No pairs of projection hinges.
  • 1No pair of handles or knobs.
  • 1No five lever security deadlock (suited where more than one door is specified)
  • 4No substantial surface mounted bolts.
  • 2No cabin hooks with eyes.
    or
  • Recessed multi-point locks or surface mounted espagnolettes to order.

    Top hung opening windows are fitted with:-
  • 1 No key-operated mortise security bolt.
  • 1 No casement stay and pins.
  • DELIVERY AND INSTALLATION
  • All Town & Country buildings are delivered and installed by Town & Country employees.
  • DRAWINGS
  • All Town & Country contracts include the preparation of workshop production and associated builder’s work drawings.
  • SPECIFICATION OPTIONS
  • A range of options are available including, roof and frame blinds cornices, extended window boards to form window seats - either open or paneled, and matching joinery new and replacement doors and windows.