My Roof Is Sagging

You may find that several are in need of straightening and that some of the sheathing must be replaced.

My roof is sagging.

Too many layers of shingles this is why we never recommend adding new shingles over old ones improper design. The first step is to find out how many rafters are sagging and if anything else is damaged. Why is my roof sagging. Here are some of the most common ones.

Deflection is the immediate sag produced when an object is set on a structural member. Grab a flashlight and head up to your attic to inspect your roof rafters and decking specifically those where your roof is sagging. When the roof framing is assembled two ceiling rafters are often joined together to create a longer span. Sagging roof lines can originate with the horizontal ceiling rafters.

As the wall tops are pushed outwards at their center either the entire wall leans over or as the wall is held up at the building corners gable ends the wall center may break and bend over as in my photo above. Also inspect the metal or plywood gusset plates used where your wood meets on a truss look for damage that includes cracks rot breaks and any other impairment. However it is important to fix the rafters before doing any other work to the roof. For example tile roofing weighs way more than your typical asphalt shingle roofing.

Why roofs sag as mentioned roofs sag because there s too much weight or load for the existing structure. This gives your roofer a chance to inspect the flashing and roof underlayment for damage. That s why most of the ridge sagging occurs in the center of the roof page top photo. Ice or snow buildup.

Straighten out your old house s sagging roof and get rid of those cracks in the wall with these easy to follow steps. Another reason your roof may be sagging is because it can t handle the weight of the roofing material. Check the ceiling for sagging by attaching a string on one end of the beam and run it along the bottom edge of the beam. Fixing a truss or rafter.

A bunch of different issues can potentially be at the root of your sagging roof problems. Sagging or low spots in a flat roof may be due to undersized or weakened roof joists or problems with the buildup layers beneath the exposed roofing. Step 1 the first step is to the basement first.