Here are seven signs that it is time for you to invest in a new roof rather than patch a problem. Regular maintenance and repairs extend the life of your roof for a decade or longer, but when is the damage extensive enough to warrant a full roof replacement.
Damage Roof Sign #1: The Age of Your Roof. Age is a significant factor in replacement versus repair for an asphalt roof because the materials degrade over time from sun exposure. Asphalt roofing is the most common type of roof used in the United Stated because it is inexpensive but durable. The roof will last between 15 and 25 years. If your asphalt roof is 25 years old or older than it is a sign that it’s time for a new roof.
Other Roofing options such as metal, tile or slate can last decades longer than an asphalt roof, and they often require less maintenance. These types of quality materials are expensive to install on your roof, but may last a lifetime. Insurance companies may also deny home coverage without a roof inspection after 20 years.
Damage Roof Sign #2: Curling Shingles – It is another sign it might be time for a new roof. If your shingles are curling it is not a good thing. There are also different types of curling. Curling shingles occur for many different reasons including old age, installing new shingles over old shingles, improper installation or inadequate ventilation. As roofs absorb moisture, over time, the shingles can curl inward or outward. Advanced deterioration is called "Alligatoring" and "Fishmouth."
Damage Roof Sign #3: The Roof is Sagging – Moisture finds weak spots in the materials, and as it settles, it causes materials to deteriorate. A sagging roof is a severe problem, and it is a warning your home is at risk of a roof collapse. Long term water damage causes roof sagging. The water can also encourage mold and mildew growth that will further damage the shingles and roof support. Poor ventilation can also lead to a sagging roof by causing ice dams or rusting on nails holding materials together in the attic. The Federal Housing Administration recommends 1 square foot of ventilation for every 300 feet of attic space.
Damage Roof Sign #4: Granules in the Gutters – If you have a new roof this sign should not concern you because the granules are likely excess. It is expected that your roof will lose some granules. However, if you notice large quantities of granules in your gutter after a heavy rainfall, it may indicate your roof is at risk of UV exposure and deterioration. If your roof is is not new and are just now noticing an increase in granules in your gutter, it is possible the shingles are about halfway through their lifespan.
Damage Roof Sign #5: Moss or Algae Covering the Shingles - To prevent moss or algae growth trim nearby tree branches that minimize sunlight, clear off debris, encourage air flow down the slope to dislodge debris, keep gutters clean, or add zinc or copper strips. Moss and algae can cause shingles to lift and curl, which will damage the integrity of the roof structure. If you notice green vegetation growing on your roof, it is important that you take action as soon as possible. An effective method to combat these intruders on your roof is to spray the problem areas with a mix of laundry-strength liquid chlorine bleach and water. Allow the solution to soak on the surface for 15 to 20 minutes, and the wash thoroughly with low-pressure water.
Damage Roof Sign #6: Cracked or Missing Shingles - Some city ordinances and home insurance policies do not allow more than two layers of new shingles. It is possible to repair a section of damaged shingles, and place new shingles over older, cracked shingles. However sometimes it is more cost -effective to replace the entire roof rather than a section, especially if the age of the roof indicates more repairs are likely in the near future.
Damage Roof Sign #7: Sunlight Shining into Attic - Inspect your roof regularly. Look up in your attic or use binoculars outside. Small holes in your shingles that allow light through into your attic will also allow moisture or even rodents into your home. You will need to determine if the area can be repaired or if replacement is the best option.
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