I do n’t know how the quality of the doors and windows at home is doing? Checking these ten key points, it is clear immediately whether it is good or bad.

I do n’t know how the quality of the doors and windows at home is doing? Checking these ten key points, it is clear immediately whether it is good or bad.
Frequent customer inquiries: new windows and doors are installed in the home, but I do n’t know how to check the quality of the windows and doors. The quality is up to the merchant. What should I do? Indeed, because many people have relatively little knowledge about the doors and windows, they ca n’t tell the quality of the doors and windows, and they are not even clear about the performance of the doors and windows in terms of wind pressure resistance, water tightness, air tightness, heat insulation, sound insulation, lighting, safety, etc. Claim.
I. Sealability requirements
1. Frame fan sealing strip: At least three sealing rubber strips should be designed at the connection part of the opening fan and the outer frame, which are the main sealing rubber strip, the fan blanking strip and the frame blanking strip. See below:

2. Corner of sealing strip: The sealing strip should avoid corner splicing. The sealing strip at the corner should be designed as a 90-degree integral rubber corner.

Second, the requirements for the group corner
Group angle is an important process related to the integrity of doors and windows. There are three main processes for group corners: collision angle, active corner code, plastic injection corner code,
Adhesive technology: Regardless of which corner method is used, there must be a process of applying corner glue. Otherwise, the corners are prone to rain. The corner of the window is not allowed to be extruded without glue.

Glue injection process: If the injection angle code is used, two-component glue must be injected to ensure the strength requirements of the corners and ensure that there is no deformation and displacement of the finished doors and windows after transportation and installation.

3. Anti-leakage requirements
1. The outer window must be provided with a drainage channel, a drainage opening, and an exhaust hole (pressure balance hole) to drain the water accumulated in the window frame fan. There should be a buckle cover on the outside of the drain to prevent strong wind from blowing rainwater and dust into the sash.

2. The insulation strip should adopt a C-shaped structure, which is compounded with the inside and outside aluminum profiles on the same horizontal plane to avoid water leakage and corrosion risks caused by the accumulation of water at the insulation strip. At the same time, the length of the heat insulation strip can be increased to improve the thermal performance.

3. Door and window opening size: The structure opening should not be too large to avoid the hidden danger of leakage caused by difficult plugging.
4. Hatch: For special reasons, such as a stone curtain wall on the outer wall, a large size of the hole is reserved. It is recommended to use a hole for the structure.
5. Outer window sill: For the building whose exterior wall is made of paint, metal window sill is recommended. The inside of the metal window sill should be pressed into the window frame, and the outside should protrude from the wall to make dripping.

6. Window frame and structural opening: Window frame should be installed in the middle. If it is installed outside, it should be retracted 20mm inward to prevent structural construction errors from causing the window frame to be installed outside the structure's skin and cause rainwater leakage.
Fourth, thermal insulation requirements
1. Cavity design of the profile: The profile should adopt a multi-cavity structure to reduce heat loss. At the same time, the upper and lower heat insulation members of the outer window should be coplanar to form an overall heat insulation surface, eliminate cold bridges, and block heat loss channels.

2. Insulation tape should be installed in the glass installation tank: increase the number of air chambers, reduce the heat loss around the insulating glass and the profile, and improve the insulation effect of the entire window.

3. The sash should adopt T-shaped heat insulation strip design: the sash heat insulation strip is designed as T-shaped, overlapped with the middle rubber strip to realize the hot and cold partition of the fan frame connection. It is forbidden to put the middle rubber strip directly on the aluminum profile of the fan.

4. Warm glass edge: Warm edge strips should be installed around the double-layer hollow glass cavity to block the glass cavity heat dissipation channel.
5. In areas with high heat transfer coefficient requirements, according to the project positioning, heat insulation materials can be added to the profile insulation cavity to meet the K value requirement.
6. Exterior door: The door of the first-floor opening to the garden should be provided with a threshold. It is forbidden not to have a threshold. The bottom of the door is closed with a brush. On the first floor of the house, the double-swinged open doors leading to the garden are closed. After closing, the two doors should be snapped together. It is forbidden to close the seam with a brush.
Five, framed construction
1. The gap between the outside of the enclosure and the wall should be uniform and should be controlled between 10 and 15 mm. The fixed installation position of the attached frame should meet the following requirements: the distance between the corners should not be greater than 150mm, the center distance between the rest of the fixed piece should not be greater than 500mm, and the distance from the center of the fixed point to the wall fixed point to the wall edge should not be less than 50mm.
2. The plug of the frame: The gap between the steel sub-frame and the main structure should be filled with dry hard cement mortar to ensure compactness. It is strictly prohibited to use foaming agent to fill. Make an "α angle (eight characters)" on the outside. Apply 1.2 thick waterproof paint.
Six, safety technical requirements
1. Glass profile: The glass profile should be installed on the indoor side. It is forbidden to turn the inside window into the external window so that the profile is installed on the outdoor side, ensuring anti-theft, safety, and glass replacement requirements, leaving no hidden dangers. .

Wrong method: The inside window is turned into an outside window, and the profile is installed on the outdoor side.
The right way: open the window, the profile is on the inside

2. Lock point: In order to improve the wind pressure resistance and anti-theft performance of the outer window, the outer window should adopt a multi-point lock. The lock point setting should meet the requirements of the hardware manufacturer's design and installation manual.
3. The size of the entrance door of the unit should not be too large to ensure the reliability of hardware accessories such as hinges and avoid safety accidents.
Seven, the main frame fan installation and construction
The main frame and window sash are finished and assembled in the factory, which can improve the processing accuracy, thereby improving the airtightness and watertightness of the entire window.
1. After the plug is completed, check the specifications of the window, model opening mode, opening direction, orientation of the mounting hole and combined accessories according to the design drawing. If deformation is found, it is strictly prohibited to install on the wall.
2. Use regular gaskets to ensure that the gap between the aluminum alloy window frame and the steel auxiliary frame is ≤10, and make the peripheral gap uniform.
3. Check the verticality and horizontality diagonal of the front side of the aluminum alloy window frame, and perform inspection and evaluation in time after passing.
4. Main frame cleaning and frame adhesive
4.1. According to the regulations, use a neutral color thick silicone sealant of the specified color to clean the 10mm area between the wall and the door and window with a brush and a dry cloth, paste the textured paper, glue, and use the hand or tool to smooth and tear Lower the textured paper for partial adjustment.
4.2. Note: When the exterior wall is paint finish, the outer frame adhesive should be bonded to the base layer of the paint; when the exterior wall finish is stone, wall brick, aluminum plate material, the exterior wall finish material cannot be topped with the window frame, which is easy to predict After leaving a gap of 2-3mm, apply window frame adhesive.
Eight, glass installation
1. Glass installation should meet the following requirements:
1.1 The glass must not be in direct contact with the glass tank, and pads of different thickness should be placed on the four sides of the glass.
1.2 Put the glass into the frame fan, and then fix it with metal clips.
1.3 The ends of aluminum alloy window fasteners are spliced at 90 ° (or 45 °), and the installation must be smooth and uniform.
2. The glass is fixed by double-sided glue. The strip, the glued surface of the outer frame, and the glass surface should be wiped clean with a dry cloth and then glued. Let it stand for 48 hours after glueing.
3. Adopt the finished rubber strip: Install the rubber corner first. The length of the rubber strip is 2 ~ 3mm longer than the actual length to prevent the rubber strip from shrinking after aging. Use a special glue to stick the glue corner and the glue strip together; it is strictly forbidden to choose the method of cutting the glue strip with a 45 ° angle (unbreaking) and bonding.
Nine, hardware installation
1. The transmission part should be installed at the factory.
2. Hardware and accessories: install the transmission handle lock; install the casement door lock; after installation, the key should be marked according to the serial number.
3. Operating standards and inspection methods: firm fixing, flexible switch and correct position.
Ten, finished product protection
1. When the product leaves the factory, the aluminum surface should be protected by a film, and the frame fan should be covered with a protective tape.
2. Remove the original packing paper during the installation of aluminum alloy door and window frame fans. Once the installation is corrected and fixed, a protective buckle cover should be installed in the lower part in time (can play the role of anti-smashing and impact resistance, and the material project is self-defined). The alloy main frame and window sash frame are protected with a protective tape to prevent corrosion of the spattered mortar and outdoor rainwater and dirt pollution.
3. Remove the original protective buckle cover and protective tape before installing the glass. After the glass is installed, protect the glass with a film. If the exterior surface also involves welding construction, the outside of the glass should be painted with water-soluble large white paint.
4. Aluminum alloy doors (push-pull, open inside and outside), door leaf installation should be arranged in the final construction. During the construction process, the lower opening of the door must be hard-protected to prevent damage and deformation to the lower opening of the door during construction.
5. The protective layer of aluminum alloy film should not be too long. Generally, it is 3 months in summer and 6 months in winter (or subject to product performance). After this period, the protective film should be replaced.