Roof Sagging Due To Improper Wall Support

Keep your attic well insulated and ventilated to prevent ice dams which can cause roof leaks.

Roof sagging due to improper wall support.

Improper roof design or construction structural damage to the roof wall and foundation failure and environmental factors like strong winds or heavy snowfall are some of the issues that can lead to sagging. Roofs sag due to lack of structural support for their load which refers to anything they are expected to bear. We include sketches of collar ties rafter ties and structural ridge beams as well as illustrations of collapsing and collapsed structures where these roof rafter ties were lost or omitted. Ceiling sagging or dropped down.

Non foundational reasons for a sagging roof two or more roofs on one structure spell trouble. A roof rake can help you deal with lighter snowfall. Warning signs that a load bearing wall has been removed. Additionally if your roofer has used material that is much heavier than your previous roof it can sag for the same reason.

The home may not be designed to support the weight of this extra roofing material and it will sag. Without the proper support of rafter ties or a structural ridge a typical gable or sloped roof will sag downwards while pushing the building walls outwards towards a catastrophe. 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. A ridge that droops in the middle forming that unintentional western design feature likely is due to undersized rafters and or missing or inadequate internal bracing rafter or collar ties.

Weight related sagging can also be caused by design flaws that leave the roof unable to support its own weight. It includes snow and ice the roofing materials and the sheathing and even the wind. Sagging ceiling could be an indication of framing issues some of which could be related to the roof. If a wall is removed between two rooms or even moved to enlarge a room then the ceiling may sag.

If the framing is sound and problems are not found elsewhere but the roof still sags the problem might have originated because of poor installation of the plywood sheathing or shingles.