| 摘要 |
PROBLEM TO BE SOLVED: To provide an outer wall ventilation structure, an under-coping ventilation structure and a construction method for the outer wall ventilation structure which increase a degree of freedom of construction while securing waterproof property of a space between a ventilation member and a side wall of a wall body.SOLUTION: An under-coping ventilation structure comprises: a ventilation member 20 which is installed at an opening 13a of an outer wall base material 13 and allows a space between a hollow section 19 of a wall body and a ventilation layer 14 to be ventilated; and a waterproof sheet 22 which is laid on an area from a lower section of an outer surface of the outer wall base material 13 to a position where the ventilation member 20 is installed. The ventilation member 20 has: a back surface member 30 which is installed at a side of the hollow section 19 and has a U shape in a vertical cross sectional view; and a front surface member 40 which is installed at the side of the ventilation layer 14 and has an inverted U shape in the vertical cross sectional view with a size thereof slightly smaller than the U shape of the back surface member 30. The front surface member 40 is fitted into the back surface member 30 with an upper section of the waterproof sheet 22 wedged between a lower edge side section 34 of the back surface member 30 and the lower edge side section 44 of the front surface member 40.SELECTED DRAWING: Figure 2 |
