First identify the windows and doors that need to be replaced

If the funds are sufficient, it is suggested that all doors and windows can be replaced, so that the style will be more uniform and more beautiful. If the funds are a little tight, you can also change the part: if the quality of the entrance is good, you only need to change the doors and windows, indoor doors and windows can also depend on the situation.

Understanding the Material of Doors and Windows

At present, the main windows and doors on the market are wood doors and windows, plastic steel windows, aluminium alloy doors and windows, broken bridge aluminium alloy doors and windows, system doors and windows, which are made of these materials. The advantages and disadvantages of different materials will be different, and the price will be different. Owners can choose the most suitable doors and windows according to their own needs. However, no matter which kind of doors and windows to choose, it is better to go to the more formal building materials market to purchase, of course, roadside shops are also possible, but we must pay attention to the credibility of better, longer-running shops to buy.

General process of window and door replacement

(1) Consulting Property: There are many residential property at present. There are requirements for the image of the facade outside the residential area. Owners are not allowed to change the material, shape, color of doors and windows privately. Therefore, before replacing, it is better to consult whether the property can be replaced.

(2) Door and window manufacturers door-to-door measurement: After selecing the appropriate manufacturers, there will be surveyors on-site measurement, and in a week or so according to your requirements to come up with a good plan.

(3) Removal of old doors and windows: Do not rush to throw away the old doors and windows that have been removed. It can depreciate and leave you a sum of money!

General process for demolition of doors and windows

Step 1: Remove doors and windows first

Step 2: Remove the door and window frames

Step 3: Cleaning and repairing doors and windows

Attention: Avoid damage to wall structure: When removing doors and windows, it is necessary to avoid using hammer.

Demolition to prevent damage to the wall structure.

Access Inspection of Door and Window Materials

Door and window materials must pass inspection and acceptance when entering the field.

In addition, the fasteners, hardware, reinforced profiles and metal liners should be checked to see whether the surface has been treated with anticorrosion.

General process of door and window installation

(1) Fixed bracket

Method 1: Fixed with fixed piece

Method 2: Fixed with expansion bolt

(2), hair foam

After adjusting the doors and windows, foam is needed to fill the gap between the doors and windows frame and the wall. After the foam is cured (usually takes 2-3 hours, longer in winter), the excess foam is cut off.

(3), installation of doors, windows and other accessories

After fixing the doors and windows frame, the next step is to install the doors and windows and other accessories. Pay attention to installation and be careful

(4) Sealant

After blowing the foam, evenly apply sealant around the door and window frames to prevent rainwater from seeping into the interior through the installation cracks of doors, windows and walls.

Note: The general process of door and window installation is to install the frame first, then check whether it is in good order, and then fill the gap with foam. Then install doors, windows, fans and other accessories, and finally apply sealant to prevent water seepage.

Installation and acceptance of_doors and windows

(1) Vertical level of door and window frames

The verticality of door and window frames should be measured with a horizontal ruler or a line hammer. The height of doors and windows should be less than 2 mm, the verticality error should be less than 2 mm, the height of doors and windows should be greater than 2 m, the error should be less than 3 mm. The level of door and window frames should be measured with a horizontal ruler, and water can be poured into the slideway under the door and window frames. If the water level is kept in a horizontal line, it means that the door and window frames are horizontal; otherwise, it means that the door and window frames are horizontal. Open doors and window frames are not equipped with level; long water pipes can also be used to measure the water level at both ends.

(2) Inspection of glass installation quality

glass should be flat, no spots, no water markings; double-layer glass should be clean inside and outside the surface, no dust and moisture in the glass sandwich, the partition can not be raised. The strip with sealing strip must be tightly adhered to the glass. There is no obvious gap between the strip and the profile. The gap at the joint should be less than or equal to 1 mm.

(3), Strict Density of Inspection frame and Fan

The combination between door and window frames and fan pages should be tight, and there should be no obvious gap at the joint of the sealing strip of the fan pages. When doors and windows are closed, there should be no obvious gap between the fan and the frame, and the sealing strip on the sealing surface should be in a compressed state.