Visit your local home goods store for blackout blinds which help prevent any light from entering the room.
Block light around door.
I have them on the windows in my bedroom it can be bright and sunny outside and completely dark in my bedroom because of them.
Take 30 minutes and replace the weather stripping and door sweeps around your steel entry doors.
Pull the old stripping off and clean the door casing with rubbing alcohol to make a smooth dust free surface for the new stripping to adhere to easily.
Cut a new length of stripping to fit into the groove and either nail it or stick it.
Upgraded door draft stopper for large gap widened door sweep seal gap up to 1 2 5 for interior exterior and garage doors keeping draft dust noise unwanted light and pests out 3 w x 37 l black.
If you are seeing light through exterior doors you may need to simply replace the worn weather stripping.
Check out how to make your own french inspired boxy door draft or light blocker.
Blackout curtains or shades.
Install blackout blinds that are mounted to your windows.
With heating costs going through the roof here s an easy way to keep heat from slipping out your doors too.
Install the blinds before adding anything else to your window like curtains.
Purchase blinds that are 1 2 in 1 3 cm or so smaller than the width of your window but long enough to cover the entire window.
Roller shades naturally have large gaps to the sides of the fabric so these light blocking strips are the perfect solution for maximum light control.
You can see by this photo that the foyer has a lot of light and the bedrooms are right off of it.
Adjust the door threshold with a no.
Focus on blocking light and sound first covering windows masking and absorbing noises and blocking air leaks from around windows or doors.