Roof Sagging Near Chimney

Sagging ceiling could be an indication of framing issues some of which could be related to the roof.

Roof sagging near chimney.

Should the bottom cord of one or more trusses be sagging or damaged it may be reflected in a sagging ceiling or if the roof is over loaded to heavy then the downward pressure may cause the sagging. Sagging sheathing between rafters may be due to rot delamination use of fiberboard or other materials that may not perform well over the life of a home or due use of too thin plywood roof decking to start with. Sagging rafters may be the result of having framed the roof with lumber of dimensions smaller than current building standards such as using 2x4s or 2x6 s or there may be damage to the framing from insects or rot. Fixing a truss or rafter.

Some roof framing designs include the use of a strut or beam that runs perpendicular across the bottom of the rafters inside the attic. The beam is attached to both exterior walls and to the. To determine what is causing your chimney to lean take a look at the angle. Causes of chimney failure.

A chimney that is leaning away from a house or appears to be falling onto a yard indicates foundation issues. Because where the chimney comes through there is going to be some framing that takes the flooring around that and that s probably the reason that the floor is sinking in the area of the chimney and walls that are resting on that floor would move accordingly. Grab a flashlight and head up to your attic to inspect your roof rafters and decking specifically those where your roof is sagging. Common flaws include undersized rafters insufficient sheathing or too few rafter or collar ties.

Weight related sagging can also be caused by design flaws that leave the roof unable to support its own weight.