Hello,
I'm in the process of insulating and boarding the garage ceiling with foil backed plasterboard. I've started at one corner and fitted the first line square to the joists. As the side wall is not square to the joists there is an increasingly sized gap approx 10cm over the 5.2m length.
There is no access from underneath to patch it up as it's covered by a roller shutter cover and frame which I don't want to remove.
What's the best way to proceed? Just cover with foil tape?, glue some plasterboard foil to foil from the top? something else?
I'm in the process of insulating and boarding the garage ceiling with foil backed plasterboard. I've started at one corner and fitted the first line square to the joists. As the side wall is not square to the joists there is an increasingly sized gap approx 10cm over the 5.2m length.
There is no access from underneath to patch it up as it's covered by a roller shutter cover and frame which I don't want to remove.
What's the best way to proceed? Just cover with foil tape?, glue some plasterboard foil to foil from the top? something else?