| (11) | EP 0 469 870 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Wall tie unit for a cavity wall |
(57) A cavity wall insert is used as a combined dampproof course and a wall tie-unit and is especially suited for use in parapet walls and under wall openings as door or window. The insert comprises an inclined web (15), a front upper block (16) and a rear lower block (17). The upper block (16) is spaced from the web (15) and is connected to it by a series of ribs (18). The lower block (17) is also spaced from the web (15) and connected to it by a series of ribs (19). The web includes a ledge (21) extending from its lower edge. The upper and lower blocks (16) and (17) include channels (22), (23), and (24) in which anchors (25), (26) and (27) are slidably located. A front sheet (28) of damp proof course material is bonded to the top of the ledge (21) and a rear sheet (29) of damp proof course material is bonded to the web (15) at the top. |