| 摘要 |
DN-1553 ROOFING SHINGLE The invention relates to a reroofing shingle having a 7.5 inch or a 15 inch vertical exposure, a 2 inch lap portion and an overall height of n(exposure) + 2 inches where n has a value of 1 when the reroofing shingle is an undivided strip and a value of 2 when the reroofing shingle comprises a sheet having spaced tabs in the butt portion thereof. The invention also relates to the installation of the present tabbed reroofing shingles over standard asphaltic roofing in a manner such that the lower tab edges of each successive course of reroofing shingle is alined with the top of the spaces between tabs of the preceding reroofing course and allows for a 7.5 inch or 15 inch exposure between courses. 0497P |
