(19)

(11)

EP 1 875 009 A1

(12)

(43) Date of publication: 09.01.2008 Bulletin 2008/02 (21) Application number: 06726926.6 (22) Date of filing: 26.04.2006

(51) International Patent Classification (IPC):  E04D 1/30(2006.01) (86) International application number: PCT/GB2006/001544 (87) International publication number: WO 2006/114634 (02.11.2006 Gazette 2006/44)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 28.04.2005 GB 0508650 (71) Applicant: Lafarge Roofing Technical Centers Ltd Crawley, West Sussex RH10 9NZ (GB)	(72) Inventors: SCHREIVER, Martin 74722 Buchen (DE) GEORGE, Gary Redhill, Surrey RH11 5AG (GB) (74) Representative: Gambell, Derek  Graham Watt & Co LLP St Botolph's House 7-9 St Botolph's Road Sevenoaks Kent TN13 3AJ Sevenoaks Kent TN13 3AJ (GB)