I need to replace a sliding glass patio door but the concrete beneath the bottom frame has deteriorated the aluminum frame. How do I repair the concrete that has crumbled away? Will I have any problems installing a new patio door frame and doors?
you can use a quick drying cement patch for filling in the missing parts of the slab of the house.this will do the job. but be sure to use flashin paper between the new door sill and the cement slab. good luck