Snow increases the overall weight of your roof adding to the forces acting on your rafters.
Strengthening roof joists.
If you have a stick frame roof there are a few basic techniques that you can use to strengthen your rafters.
Joists and orient panel ends over joists.
Add an additional row of fas teners midway between the joists to pull the layers tightly together.
Laminated and single piece beams are often reinforced with plywood.
Strengthening existing roof rafters is a difficult process that often requires professional help.
As incremental parts of a building s structure joists are not easily replaced.
This is also routine procedure for some ceiling or floor joists that are manufactured in.
How to strengthen beams using plywood.
Long spans of joists in newer homes may wobble or bounce from foot traffic.
When installing on the underside of the joists the process is the same.
You can however strengthen the joists.
Sistering is the process of adding a new joist next to each existing joist.
If the attic joists are not adequate one way to strengthen the floor for live loads is to sister the old joists.