1. Move the sash out of the window rail
First of all, we need to push the two windows together to overlap, hold the outer window sash with both hands, lift it up with force, and then slightly outward, move the lower part of the window sash out of the window track, then hold the window sash in hand and push down hard , the upper part of the sash comes out of the window frame.

2. Remove the window sash
It is easier to remove the inner window sash and the outer window sash. When disassembling the window sashes, please pay attention to safety. In order to prevent falling, it is best to cooperate with two people.

Precautions for disassembly of upvc windows
1. Observe the anti-theft board on the side of the window sash
Sometimes the window sash may not be able to be lifted, this is because the plastic strip on the side is restricted, you can carefully observe the upper and lower grooves on the side of the window sash, this plastic strip is also called anti-theft plate, it is stuck on with plastic clips, and can be used Gently pry it off with a screwdriver along the gap, and the window sash can be removed.

2. Remove the lock first if the window is locked
If there is a window lock blocking it, the lock must also be removed first.

3. Pay attention to the protruding objects above the window frame
In addition, there is a protruding object in the groove on the upper side of the window frame, which may also block the window sash and cannot be removed. The role of this object is a limit, which is fixed with screws and can also be removed. But it's mounted on the side, so you shouldn't be able to touch it.

How to change glass for upvc windows
Remove the broken glass first: use a greasy knife or a thin blade to remove the bead of the glass first, remove the two long bead, then remove the two short bead, and finally take down the double-layer glass and clean up the debris. Be careful not to damage the contact surface of the sealing strip sandwiched in the middle, just insert and cut it with a greasy knife.

Replacement of new glass: clean the new glass, and at the same time clean the inner surface of the original layer of glass, otherwise it will not be wiped after installation. Clean the contact surface of the sealing strip, put the glass away, make sure there is no sundries and dust inside, and seal it with glass glue.

Reinstall the glass: After the glass glue is 80% dry, put the double-layer glass back, contrary to the dismantling, first install the short bead, and then install the long bead. Then polish the glass, replace the upvc windows glass and it's done.