In finished attic rooms with or without dormer insulate 2a between the studs of knee walls 2b between the studs and rafters of exterior walls and roof 2c and ceilings with cold spaces above.
Insulation above ceiling tiles.
Insulating fiberglass ceiling tiles are the perfect solution for jobs that require a lay in ceiling panel with access above and high r value.
2d extend insulation into joist space to reduce air flows.
If you have fiberglass tiles you ll need to replace them before proceeding.
Fiberglass ceiling tiles cannot support the weight of insulation.
Rockwool stone wool insulation is an ideal material to be used in interior ceiling floor partitions where sound absorbency and fire resistance is required.
Although batt insulation is fairly lightweight it can put an undue amount of stress on flimsy drop ceiling tiles and break them.
Soniguard drop ceiling soundproofing insulation above your ceiling tiles will dramatically improve the sound blocking characteristics of any suspended ceiling.