Install paneling or sheetrock over insulation located in the wall.
Exposed insulation in ceiling.
Suggestions for covering exposed insulation include the following.
By zuerita june 5 2017.
How to thermally insulate roofs with exposed rafters trusses or beams.
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My house has an unfinished basement.
Both of these things will significantly reduce the effectiveness of the insulation.
Isoboard thermal insulation fitted as a ceiling following the roofline allowing the opportunity to create additional space or a liveable loft conversion.
Install plywood flooring over insulation located in the floor.
Seal the insulation by stapling a polymembrane sheet over it.
How to expose rafters and still provide insulation finish ceiling.
The insulation for exposed rafters is installed on the exterior side of the finish ceiling.
One drawback to this is that the layer of insulation placed above the ceiling is missing which can subject the area of the house with the exposed rafters to extreme temperature changes.
Work with an insulation expert to ensure.
From your picture that is a poor installation job.
The bent boards that hold the fiberglass up appear to be compressing it and the fiberglass batts are not tightly fit between the joists.
If your structure does not need to be well insulated you can simply sandwich a layer of aluminum.
You can prevent this by installing foam insulation board against the underside of the roof between the rafters.
If you are concerned you could cover the ceiling with a insulation mesh or house wrap stapled to the bottom of the joists or install a dropped ceiling.