Roofing - Bon Air Exteriors

Typical Causes of Roof Problems

A. Lack of Maintenance

The failure to find and correct minor roof deterioration in the earliest stages is probably the greatest cause of premature roof problems. This is particularly true of roofing materials applied on relatively low-sloped roofs.

B. Weathering

All roofing materials deteriorate from exposure to the weather at rates determined largely by the kind of material and the conditions of exposure. In general, inorganic roofing materials tend to deteriorate less rapidly from exposure than organic roofing materials. All types of roofing materials may be damaged by hail. Exposure to air pollutants and industrial or salt-laden atmospheres may accelerate the deterioration process of some roofing materials.

C. Wind Damage

Roofing materials are subject to damage from strong winds and flying debris. Generally, roofs are not designed to withstand winds of hurricane and tornado intensity. However, roofs may also be damaged by winds of moderate intensity, with gust that may reach 50 to 75 miles per hour.

The primary cause of wind damage is from the partial vacuum created by wind blowing over the edge of the roof. Nature tries to neutralize the low-pressure area by bringing in air from a higher pressure area, usually from inside the building. This air pushes up on the bottom side of the roof assembly and, over time, loosens fasteners and breaks the adhesion making the roof susceptible to damage from the next moderate or strong wind.

To counteract the effects of winduplift forces, the roofing and insulation should be adequately fastened to the roof deck, and a securely-fastened perimeter detail should be provided.

IMPORTANT ACCESSORIES

The beauty of your roof is only half the story. Underneath are several additional layers. TAMKO offers a variety of accessories for your roof.

Ice & Rain Underlayments
Underlayments
Shingle Starter
Cements & Sealants
Heritage Shingle Options
Ventilation
Hip & Ridge Shingles

The above illustration shows the placement of important accessories for new roof installation and is not meant to show proper installation techniques. Visit tamko.com to download product application instructions.

E. Flashing Failures

The function of flashings is to provide a watertight junction between roofing materials and roof projections or other parts of the structure, and between roof sections. Flashings should be designed to furnish service for at least as long as the materials used in the field of the roof. Flashings are the most vulnerable part of any roof. Their importance and the importance of maintaining them properly cannot be overemphasized.

Many early roof problems are actually flashing problems. Often, repairing the flashings or providing new flashings is all that is needed to make the roof watertight again.

Most flashing problems result from inadequate flashing design or faulty construction. Many flashing problems can be reduced or eliminated by careful examination by competent inspectors during roof installation, and by regularly scheduled inspection and maintenance.

In many instances, leaks occur at flashings where there are no flashing defects. These leaks may be the result of open joints in a masonry wall or coping cap, which permits water to enter behind the flashings and into the building. This problem may be eliminated by “through-wall” flashings.

Color Swatches

americas-natural-colors

Capture the enormity of rugged mountain ranges or the serene beauty of the Grand Canyon through vibrant color palettes. America’s Natural Colors® draw inspiration from our country’s natural elegance to seamlessly match your style.

Heritage Series

Heritage^®
Black Walnut

Heritage^®
Natural Timber

Heritage^®
Thunderstorm Grey

Heritage^®
Timberwood

classic-colors

Make your home a focal point with classic, traditional shades. With Classic Colors, choose from a selection of charming greys, elegant reds and earth tones to create a roof that complements your home’s unique style.