Alternatives to a Tar Gravel Roof

Foam

• Foam roofing material provides an alternative to tar and gravel that helps save energy by providing thermal insulation. The foam consists of isocyanate and polyol, two liquid components mixed together to form a substance called polyurethane foam. The foam is applied to your roof as a liquid, then expands to about 20 to 30 times its original size. According to the Roof Helper website, foam roofs may pay for themselves in just five years thanks to the money saved on energy bills.

Rubber

• Rubber roofing provides a long-lasting option consisting of either ethylene propylene diene monomer, referred to as EPDM, or polyvinyl chloride, known as PVC. Since EPDM roofing doesn't require a mineral coating, it works well on a home that requires a lighter roofing material. The energy efficient material works well in bad weather such as hailstorms and high winds. PVC roofing material offers a fire safe option ideal for roofs that don't receive much rain or snow.

Bitumen

• Some homeowners prefer to use bitumen roofing material. Similar to tar and gravel, bitumen uses a blend of materials that make the roof stronger and more resistant to weather. Rather than using tar, the process involves laying down several layers of polyester or fiberglass material with bitumen added into the mix.

Rolls

• Roll roofing gives the budget-conscious homeowner an inexpensive option. The material comes in 90-pound rolls that resemble asphalt shingles. Each roll covers 100 square feet. The material only lasts about 10 years since it's applied in a single layer.

Going Green

• Environmentally conscious homeowners find green roofs turn flat or low-pitched roofs into more than just a wasted space. Green roofs are covered with permeable plant material that makes a visually appealing roof. They're particularly ideal if bedroom or living room windows overlook that section of the house. The green roofing process consists of putting down layers of soil and vegetation on top of layers created for drainage and waterproofing.