PHT37 – Passivhaus Twin Stud Timber Frame Window Head and Cill

Price range: £9.00 through £14.00 + VAT

This detail shows the head and cill junctions for a triple glazed window (21 Degrees GBS78) within a Passivhaus twin stud timber frame wall. The external wall shows 300mm cellulose insulation pressure pumped between twin studs, external and internal OSB 3 sheathing boards, airtight vapour control layer, and 50mm service zone.

At the head, the detail includes breather membrane draped over lead flashing and tilting fillet, with airtightness tapes sealing the window frame. The cill incorporates a PPC aluminium window cill with stop ends, weatherproof and watertight sealing tape to the outside of the frame, and weather resistant mastic seal. Purenit block is shown below the window for thermal continuity. The frame back is filled with airtight foam or compressed foam tape, and any window straps are taped over for airtightness.

See drawing notes for full information.

Features of this detail: Passivhaus, twin stud timber frame, triple glazed window, 21 Degrees, window head, window cill, cellulose insulation, airtightness tapes, Purenit block, lead flashing, aluminium cill, cavity barrier, weatherproof seal, thermal bridge free

 

£14.00 + VAT
£9.00 + VAT
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03_01 Passivhaus Twin Stud LR

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