Sistering is the process of adding a new joist next to each existing joist.
Attic joist 2x4 or 2x6.
Typically ceiling joists are 2 6 or 2 8.
Standard joist spacing for the installation of attic flooring materials is 16 inches on center oc meaning the distance from the center of one joist to the center of the next joist is 16 inches.
I d like to double my ceiling joists to make my attic space easier to work in for electrical plumbing and for lightweight storage.
Please read disclaimer at end of description sorry this is my first video and i do a terrible job explaining but.
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In the case of 2x6 joists you can pair them up with additional 2x6 joists by nailing them together side by side.
They are designed to carry only the weight of the drywall or plaster depending on the age of your home.
If the attic joists are not adequate one way to strengthen the floor for live loads is to sister the old joists.
Each joist is strong enough to support my weight 175lbs concentrated in a 1 segment of the joist and.