Here s how to make undersized and o.
Attic joist 2x4 or 2x6.
More times than not the floor structure of an existing attic is actually a ceiling joist.
I d like to double my ceiling joists to make my attic space easier to work in for electrical plumbing and for lightweight storage.
Each joist is strong enough to support my weight 175lbs concentrated in a 1 segment of the joist and.
In the case of 2x6 joists you can pair them up with additional 2x6 joists by nailing them together side by side.
Sistering is the process of adding a new joist next to each existing joist.
2x4 s actual size spaced 16 on center running the width of the building uninterrupted with the ends resting on top of the wall top plate.
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.
They are designed to carry only the weight of the drywall or plaster depending on the age of your home.
Please read disclaimer at end of description sorry this is my first video and i do a terrible job explaining but.