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  1. EWI to soffit eaves by room-in-roof

    Detail for external wall insulation up to existing soffit eaves, including new loft insulation to an existing room-in-roof. This detail is designed to prevent a potential cold bridge at eaves where the loft or roof insulation meets external wall insulation at a soffit deep enough to accommodate new EWI beneath it. Loft and external wall insulation to be installed from outside.

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  2. EWI to clipped eaves with room in roof (insulation to rafters)

    A detail for external wall insulation to deal with a potential cold bridge at eaves where new insulation to rafters meets external wall insulation. To be used where there is an existing room-in-roof or loft/roof insulation to be applied to existing rafters.

    Where there is a limited overhang at the existing eaves, an integral gutter is required to enable water run-off. The EWI is used to form a verge, which is then capped with a Stainless steel gutter.

    Target values:

    Target Roof U-Value: 0.18 W/m²K Target Wall U-Value: 0.18 W/m²K

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  3. EWI to clipped eaves with hidden gutter

    A detail for external wall insulation to deal with potential cold bridging at eaves; where new or existing loft or roof insulation meets external wall insulation.

    Where there is a limited overhang at the existing eaves, an integral hidden gutter is required to enable water run-off; to facilitate this the EWI is brought up to form a verge, which is then capped with a stainless steel gutter.

    Target values: Psi Value: 0.0778 W/mK

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  4. EWI- window to eaves with soffit

    Detail for external wall insulation to an overhanging soffit above a window to be replaced. This detail shows new external wall insulation to meet new loft and roof insulation directly above the new window to prevent a potential cold bridge at the building eaves.

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  5. EWI to eaves, flush with window head

    Detail of external wall insulation to eaves; where existing overhanging eaves meet the head of an new replacement window fitted into depth of new EWI. Detail for insulation of space above the existing soffit, up to the underside of new phenolic eaves insulation. Designed to deal with potential cold bridge at eaves; where loft or roof insulation meets cavity or other wall insulation. New EWI to join to overhanging eaves insulation directly above window.

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  6. EWI to Existing Parapet Eaves

    A detail for external wall insulation, designed to deal with potential cold bridge at eaves; where new or existing loft or roof insulation meets external wall insulation. Where there is a limited overhang at the existing eaves, an integral gutter is required to enable water run-off. Here the EWI is brought up to form a verge, which is then capped with stainless steel flashing and associated gutter.

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