Before filling the foaming agent, the gap between the hole and the window frame is 20MMFor exterior walls, the outside of the door and window frames should be cleaned first and decorated. During decoration, the gaps on the outside of the door and window frames can be powdered. If it cannot be powdered, cement mortar must be used first to joint it, and the depth of the joint embedding should not exceed 20MM, PU can be carried out only after the cement mortar joints have hardened.PU The filling operation of foam caulking agent.
The gaps between doors, windows and walls where foam caulking is used must be cleared of wood blocks, brick chips, stones and other debris, and use blowing equipment Blow away any loose dust inside. After cleaning the gaps, you must also check whether the gaps are damp. If it is dry, use a spray bottle to spray clean water on the surface to moisten it to enhance the bonding strength of the foam surface caulking agent.
After the preliminary preparation work is completed, a special spray tool can be used to fill in the foam caulking agent. During the filling operation, the vertical direction should be from bottom to top, and the horizontal direction should be It should be filled from one end to the other end evenly and slowly. The gap between the door, window and wall surface must be fully filled.
After the foam caulking is filled, a special tool can be used to repair the foam caulking that overflows the inside of the door and window and make it recessed into the inside of the window frame10MM, and then use cement sand to level it, or paint it flat when painting the interior wall.
Title of this article: Construction process of Weigu polyurethane (PU) foam caulking agent
Source of this article: http://www. wellgo.com.cn/newb/information_2390.shtml
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