Timber Frame Window Head Detail | RTF-05

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Timber frame window head detail with cavity barrier and flashing

RTF-05 – Window Head Detail

£5.99

Use this timber frame window head detail to coordinate the lintel zone, cavity barrier, insulation, flashing and weather protection at 1:10.



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This timber frame window head detail shows the junction between the frame, structural opening, sheathing, insulation and rendered finish. It illustrates the relationship between the window frame, structural opening, sheathing, insulation and external render system. The detail also identifies the cavity barrier, ventilation provision and protective flashing above the opening. It helps demonstrate continuity of insulation, weather resistance and fire protection. The drawing is suitable for Building Regulations packages, working drawings and installation guidance.

For a closely related junction, see our RTF-06 window cill detail. Approved Document C provides official guidance on resistance to moisture in floors, walls and roofs.

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