| 摘要 |
A roof construction comprising overlapping formed plastics sheets (11) for retaining tiles or slates (19), the sheets incorporating shaped formations arranged to receive and locate corresponding formations on the underside of roofing tiles or slates (19). The sheets (11) are fixed to roof beams (12) prior to location of tiles or slates (19), which is then achieved without the use of external fixing means such as nails or clips. |
