Keeping the blinds close block most of the light but sometimes blind slats can let a little amount of light to enter your home through the gaps between slats.
Do wood blinds block light.
Also you have to keep in mind that it is block out all light is an impossible thing to do no matter how effective your shutter are.
Well this is possible but your room has to have no doors or windows.
Their cell pockets trap heat and light between them besides lending you the privacy that you desire at all times during the day.
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.
Besides their sleek and minimal appearance they are also excellent blockers of light and heat when they employ more than one sheet of fabric in their construction.
Wood blinds are made of different slat sizes which include 2 inch 1 inch 2 inch and 2 inch.
Ways to prevent the excess light.
Link to other question.
Light gaps are especially problematic on blackout shades where complete darkness is desired.
Window treatments come in various fabric options which include sheer light filtering room darkening and blackout materials and depending on your requirements you can choose the right one.
Light blocking strips can cover gaps.
Light filtering blinds diffuse the harsh sunlight into soft rays room darkening blinds to block out most of the light and blackout treatments are built to obstruct all the light making any space dark.
Are faux wood blinds room darkening.
Basically they can really block a substantial amount of outside light from coming into your room or area.