Aluminum Profile is a kind of alloy material with aluminum as the main component. Aluminum rods can obtain aluminum materials with different cross-section shapes by hot melting and extrusion. However, the proportion of added alloys is different, so the mechanical properties and application fields of industrial aluminum profiles are also different. Generally speaking, industrial aluminum profiles refer to all aluminum profiles except those for building doors and windows, curtain walls, indoor and outdoor decoration and building structures.
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(2) Overhang the surface of the wall decoration line, sill, etc., on the back surface, water; The lower slope of the door and window or the slope is small, the surface smoothness is poor, there is water; the lower floor slope to the inside, no dripping line or eagle Mouth drip line, water along the bottom edge and the vertical wall seam into the insulation layer.
(3) The benzene board under the door and window is higher than the height of the drain hole of the door and window, and the water in the drain hole directly enters the insulation layer.
(4) The roof and external insulation joints are treated unreasonably and leak into the insulation layer.
Precaution
(1) Strengthen design and construction management to prevent cracks in the insulation of external walls (refer to Article 2 above).
(2) The lower surface of the doors and windows, which protrudes from the walls, and the decorative lines, etc., shall have a water drainage gradient of i ≥ 3%. The lower floor and the upper mouth of the doors and windows shall be provided with olecranon drip lines to prevent water from flowing into the insulation.
The water in the insulation layer is due to the useless drip line
The main site of occurrence is: cracks or holes in the outer wall surface; the lower part of the window; the provocation, decorative lines or other components that protrude from the outer wall intersect the wall surface: the wall surface exposes the glass fiber mesh.
Cause of water in the insulation layer
(1) Failure to follow the design or construction procedures resulted in the presence of cracks, holes, and other influent sites on the exterior wall.