| 摘要 |
A method of installing a cill replacement unit to form part of an external wall insulation system on an existing building comprising the steps of fixing the plurality of insulation sheets 404 to an external wall of the building and adhering the cill replacement unit 400 to at least one of the plurality of insulation sheets before any render application process has been carried out on the insulation sheets of the external wall insulation system. Also claimed is a replacement cill or replacement sill comprised of insulation material with a cill nose and cill wings and a multi-face adhesion surface along a rear portion of the cill, suitable for adhering to a plurality of insulation sheets, the multi-face adhesion surface is located along a rear portion of the cill and comprises a plurality of faces that have parallel or planar longitudinal axes. The adhesive could be expanding foam. The cill could be an ultra high density expanded polystyrene sheet.
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