Aluminum windows and doors leak prevention and control

1, the design and preparation phase

    a) early intervention, to participate in drawings reviewing the design defects, proposed deepening of the design requirements;

    b) structural design characteristics on the basis of engineering calculations strictly according to specifications and design, do not simply apply;

    c) the characteristics of a model based on the engineering construction window, do the preliminary prevention, process control, stage watertight test;

    d) before mass production, and truly physical performance test to determine whether the doors meet the design requirements and performance indicators;

    e) try to use the same manufacturer, same series window profiles, do not simply pieced together, try to use retaining high sash section, increasing sealing doors and windows and adding windows and doors pass locking points;
2, making the installation phase

    a) doors and the wall surrounding the hole should be controlled in the standard gap between 25mm-40mm, the maximum size should be no more than 50mm, the minimum is not less than 20mm, and the outer wall of the window frame at a distance, or should use fine concrete pouring dressing before installation and construction, prohibited the use of inferior masonry, such as mud-brick or mortar directly sintered pad level;

    b) a reasonable choice according to the project situation cement mortar filling method, one first mortar filling the cavity aluminum mounting on the wall and then a second filling; two aluminum frame is fixed before filling mortar. Both methods have advantages and disadvantages, the first chamber to ensure that no form of aluminum hollowing phenomenon, but is easy to produce in the second filling cracks and leaks; second method is easy to form the lower sides of the border and the inevitable dissatisfaction with the form filling hollowing phenomenon;

    c) To control the cement mortar filling cement mortar mix is ​​generally 1:2.5, to ensure the quality of cement mortar, it is recommended to add in cement mortar cement mortar waterproofing agent to improve anti-leakage performance, pay attention to maintenance, to avoid cracking;

    d) border around the outer wall of windows and doors 300mm range, increasing painted two waterproof coating to reduce the chance of water leakage;

    e) face the wind or rain erosion surface to prevent rainwater seeps through the windows and the wall between the filling material, sealing baffles or other appropriate consideration waterproof coating to increase the impermeability;

    f) to leave the junction sash dispensing slot width 5-8mm, inlay Note sealing materials, attention should be clear floating dust, mortar, etc., so that the sealing material and window frames, wall firmly bonded. Also check whether the continuous sealing materials, whether gaps, etc., especially if there is nonporous corner transfer position exists; wall tiles should be used for two or more sealed to avoid the patchwork capillary water penetration;

    g) Adjust ban remains in the doors and windows frame pad, a second time after removal filled with dense, filling attention reliable bonding with the substrate, in addition to clear debris outside the matrix should be moist;

    h) indoor outdoor window sill plate should be less than 20mm is appropriate, and set the downstream slope, drainage flow, to avoid water penetration. Aluminum doors and windows and the exterior have a certain distance, to avoid direct rain erosion.

    i) door and window fittings, materials, specifications, connection method should comply with local "aluminum alloy doors and technical regulations" requirement in a timely manner with concrete or mortar anchor seal, avoid moving under the action of wind load leaving the sealing material cracks.