Roof Uneven Aging

Roof shingles are not lying flat.

Roof uneven aging.

Sagging has several causes but the main one is age. It also resists uneven weathering fading or chalkiness of the installed roofing system. The roof has 1 layer of shingles but there are 5 places where the rafters are bowed upward and there are about 15 rafters that are sagging. The roof shall be viewed from a normal viewing position on the ground without magnification by reflected light.

Is well suited for retrofit installations. The roof sheathing shall provide an even surface free from thickness variations holes and debris that produce visible irregularities in the finished roof. A roof should never sag or be uneven because it s specifically designed to bear its weight. Signs of an aging roof can often be observed from ground level and sometimes a convenient second floor window offers a bird s eye view of the shingles.

Usually when you see a roof sagging if it s at the top it s usually because the ridgebeam is too thin or the rafters are spaced too far apart. Or it could be the top sill has rotted and allowed the rafters to settle. My idea is to use my reciprocating saw to remove or use the 1st 3 feet at each end of the upward bowing rafters to add a new 2x6. Roofs have ways of visibly showing their age.

Loss of surface granules damage to the felt or composite base layer and uv damage often leads to this wavy development. Worn or deteriorated roof covering materials occasionally loosen from their fasteners and lift away from the roof which creates an uneven appearance. And although older roofs may continue to keep the elements out they may be more vulnerable to damage due to wear and tear over the years. If it s at the edge of the roof it s usually because the foundation has given and the walls are sagging in the middle.

Exposure to wind rain and sun further deteriorates the roof coverings often resulting in shingles or roof panels that appear to be peeling off of the structure. Lumpy bumpy or curling shingles that do not. The shingles on your roof serve a dual purpose. All commercial roofing products are prone to aging inconsistently across your roof.

Plus dicor epdm passes the astm 20 year accelerated aging test with no discoloration. Sagging has several causes but the main one is age. This is because the micro climate of your building changes from roof edge to interior drain from flat expanse to spots under hvac equipment. If your roof has looked smooth for years and has only developed an uneven appearance with age the change is likely due to damage instead.