PURPOSE: To attach roofing firmly as well as to improve the simplicity of construction work by installing this roofing attached to an interval between both rafters provided along the slant of a roof, a horizontal frame accepting the lower end and thin plate bent and formed plus a presser member, respectively.

CONSTITUTION: A lower end 8a of roofing 8 is clamped to a rear frame 6, and secured to a column 2 via a mounting bracket 14. At this time, a groove part 22 clamping a mounting part 21 and the lower end of the roofing 8 in time of secureness to the column 2 and a through part 23 making rainwater or the like flow inside both are formed there. Then the lower end 8a of the roofing 8 is stored in the groove part 22 of the rear frame 6. Next, an inner wall 24 of the groove part 22 is pressed by a presser member 30 bent and formed by sheet metal. With this pressing force, any possible lost motion in the roofing 8 is prevented from occurring. Accordingly, attachment of the lower end 8a of the roofing 8 is simplified, and thus construction work can be simplified.