Secure screws in crumbly wall
How to fix screws in a crumbly wall with white glue and toilet paper, this tip shows:
If you want to turn screws into a crumbly surface (such as loam plaster), you can stabilize the screw hole with toilet paper and pongee.
Just drill a hole, moisten the toilet paper with glue, stuff it in the hole and screw it in a little bit. When the paper is dried screw it in completely, even holding our radiator to the wall!