Wall Header Gap Sealing
This is typical flooding of a wall header in an attic floor, with very wet flexible grout. A spray bottle offers controlled wetting for slight dilution of the flexible grout paste. Gaps can be quite large, defying fill as a flood; then work mineral wool into the paste.
Here is a 3/8" gap. Tamp anything into it as a dam. Crown with wet flexible grout.
This is very-crumm
Under all the foam there was a negligible achievemen
Here note that much wall header sealing can not be addressed by building gaskets set against drywall at the ceiling. Ooze flexible grout under nailer plates. Fill sometimes-
Please know that mineral wool dissolves nicely in water and in flexible grout, to serve as a thickener and extender.
Flexible grout is essential in patch-out of awful can lights. As I do prep in an attic floor, I must keep a ready kit for patching, that will never include dumb spray foam.
Here is an interestin
The so-hard flexible grout, non-shrink