Water -proof component for roof

The utility model discloses a water -proof component for roof, it includes aluminium frame (1) and movable check block (3) its characterized in that, has seted up type groove (2) at the back of aluminium frame (1), " T " the font of lying is personally submitted in the rip cutting of type groove (2), is strip (3 blocked including the form that erects at both ends in movable check block (3) 1 )Horizontal bar (3 with the centre 2 ), rectangular form is personally submitted to movable check block (3) transversal, and " worker " the style of calligraphy of lying is personally submitted in the rip cutting of movable check block (3), install each other back -to -back adjacent aluminium frame (1) to through movable check block (3) joint. The utility model discloses a " T " font type of lying groove and " worker " style of calligraphy movable check block's cooperation can prevent effectively that the roof from leaking, and the movable check block accessible strikes and drops, is convenient for change demolish the mai