All our standard (heavy duty) Summer Houses are built with 2"x 2"(45 x 45mm) framing, cladded with 22mm t&g log lap, the floor is constructed of 16 x 100mm tongue & groove on 2"x 2"(45 x 45mm) pressure treated timber, the roof is constructed of 16 x 100mm tongue & groove on 3" x 2"(45 x 75mm) spanning 8'(2400mm) max & 4" x 2"(45 x 97mm) spanning 10'(3000mm) max, tongue & groove roof overhangs (guttering recommended but not included, see extras) & is covered with green mineral felt (reinforced fibre), Our timber decks are constructed of 4" x 2" (97 x 47 mm) pressure treated timber supported on 6" x 2" (150 x 47 mm)pressure treated joists at 16" (400mm) centres, which are coach bolted (zinc plated steel) to 4" x 4" (100 x 100 mm) pressure treated posts, concreted into the ground at maximum 8' (2400mm) spans & a minimum of 16" (400mm) depth. This will provide a solid level base on which to construct an equal sized S T Timber Building deck.windows are timber framed fixed glazed with 2mm clear acrylic, door is ledge & brace style log lap with three 12" T hinges & a hasp & staple with padlock. All external timber is pre treated with a clear water based preservative ready to receive a coloured coat of your choice if you require (not included, see extras). All built in manageable panels & fixed with screws for easy disassembly if you ever needed to move the building or even take it with you if you move home.