Building door and window mounting rigid foamed polyurethane filling construction process

Abstract

The invention discloses a building door and window mounting rigid foamed polyurethane filling construction process, which comprises the following steps of: (1) cleaning a base layer, i.e., cleaning the surface of the base layer by using rigid hair; (2) wetting the base layer, i.e., spraying a layer of clear water on the base layer; (3) performing joint filling operation, i.e., adopting a gun type polyurethane foam filler, inverting a material tank and connecting the material tank with a spray gun through thread in use, rotating to open a flow valve, adjusting flow and then spraying; and immediately spraying water fog on a filling part after the filling is finished, thereby facilitating full expansion of a foaming agent. Practice proves that the building door and window gap filling operated and constructed by the construction method realizes an extremely obvious door and window frame seepage prevention effect, easiness in operation and convenience in construction.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a construction process for installing rigid foamed polyurethane plugs for building doors and windows. Background technique [0002] In coastal areas, especially in warm and humid climates, it is rainy and humid all year round, and water seepage through aluminum alloy and plastic steel doors and windows is one of the most common quality problems in construction in this area. [0003] During the installation and construction of doors and windows, the gap between the outer frame of the doors and windows and the wall is usually filled with cement mortar or soft filler. However, the gap between the door and window frame and the wall is very small, and it is often difficult to fill it tightly with cement mortar, and there are problems such as cavities and the filled mortar are easy to crack, resulting in water seepage. When soft fillers such as mineral wool fillers are u...

AI Technical Summary

Problems solved by technology

However, the gap between the door and window frame and the wall is very small, and it is often difficult to fill it tightly with cement mortar. There are problems such as cavities and the filled mortar is easy to crack, resulting in water seepage

When soft fillers such as mineral wool fillers are used for stuffing, the combination of cement mortar and soft fillers is not strong, which will easily lead to cracking and falling off of the mortar layer and window cover plaster layer applied on it. layer, causing problems such as moisture, mildew, and water stains on the inner wall near the window frame

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