Here s how to make undersized and o.
Attic joist 2x4 or 2x6.
If the attic joists are not adequate one way to strengthen the floor for live loads is to sister the old joists.
They are designed to carry only the weight of the drywall or plaster depending on the age of your home.
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.
Typically ceiling joists are 2 6 or 2 8.
Get free shipping on qualified 2x6 joist hangers or buy online pick up in store today in the building materials department.
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.
More times than not the floor structure of an existing attic is actually a ceiling joist.
Each joist is strong enough to support my weight 175lbs concentrated in a 1 segment of the joist and.