Add Bridging Attic Trust

Divide the span by three and add rows of bridging at both of the one third points.

Add bridging attic trust. The longer the truss and the steeper the roof pitch the larger the room. Gluing and screwing a 3 4 attic subfloor and providing solid bridging should also be considered. The rooms in the attic trusses depend on the length of the truss and the pitch or steepness of the roof. Sistering is the process of adding a new joist next to each existing joist.

Pieces of 2 by 4 inch lumber are placed between the trusses underneath the decking to keep trusses straight. If the attic joists are not adequate one way to strengthen the floor for live loads is to sister the old joists. Bracing for extra support. From the foundation wall.

Add a row of new bridging at both of the one third points of the span. Select file new planfrom the menu to open a new blank plan. Add nails or screws if necessary. If there is no bridging in the center of the span install a row there as well.

Begin by checking the original bridging. Then measure the span of the joists the distance between walls or beams that support the joists. If your joists span 12 ft for example place bridging 4 ft. When installing a roof truss it s absolutely critical to exercise extreme caution and follow all of the manufacturer s directions improper installation can cause roof truss failure and structural collapse leading to injury or death.

Strengthening attic joists for live loads by sistering. Do you need a crane to set attic trusses. Start by making sure the original bridging is tightly fastened. Attic truss repair 01.

Adding a 2 x 4 along the bottom chord of the 2 x 6 ceiling floor joist maybe helpful in stiffening the joist as well. If the attic is being finished for living space these pieces called scabs can be installed flush with the trusses to provide areas for sheetrock or paneling to be nailed to. Select build wall straight exterior wallfrom the menu then click and drag to draw a rectangular structure. Roof trusses must be handled gently and from the top down.

It s safer to use a crane for all involved. If the existing joist system is very close to being sufficient to support a new attic flooring the addition of bridging between the joists may be all that s required.