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Frequenty Asked Questions

My roof leaks. Do I need a new one?
Not necessarily. A roof leak can be the result from damage done to only one area of the roof system or the result of a loose or missing flashing. A roof failure, however, such as improper roof system installation practices, incorrect material choice for the roof structure, or material failure, is generally irreversible.
People often ask our Portland Roofers, how many layers of shingles are allowed on my roof in Oregon? Most building codes allow a structure to have two roof membranes. However, Portland will allow up to three residential roofing layers if the structure can support it. Generally though, experienced roofing contractors use the rule one and off which allows the roofing contractor to inspect the roof deck and make any necessary repairs. Also, the roofing system itself lasts longer and the roof warranty may qualify for an extended coverage period.
Installing a new roof over an existing roof is acceptable but not generally recommended. Having a suitable surface to attached the new roof to can only be guaranteed with a complete tear-off and inspection of the homes roof deck.
There are two questions here and thus two answers. First, the best time to install a new roof is before the old one is leaking and this requires a periodic inspection by a professional roofer. The other question is what time of year is best for installing a new roof. That answer is based on weather, which in Oregon can be most any day its not raining. Actuality though, May through September are ideal, but anytime dry days are predicted, go for it.
The challenges of installing a new roof are numerous, including the danger of a workplace accident along with the skill and knowledge associated with installing a roof system. Manufactures generally will not issue a warranty if the product is not installed by a licensed professional.
The installation of a new roof will generally affect you in three ways: vibration inside the home, debris in the attic and outside area, and noise. The first one, vibration, means you should remove all loose items from you walls and shelves. Debris, the second one, can occur in your attic and especially outside. A good roofer will discuss how to protect these areas. Last is noise, and lots of it. If you have pets at home or work from home, plan accordingly.
A roofing felt underlayment is typically a membrane that is laid between the roof deck and the roof covering. One type of underlayment is rolled out and nailed to the deck while another type is adhered directly to the deck of the roof.
Unfortunately, most roof problems are discovered after the roof has been leaking or other damage has occurred. Yearly inspections will often reveal cracked, warped, or missing shingles, loose seams, mislaid or deteriorated flashings and excessive granule loss in the gutters. Inside your home, look for discolored sheetrock or ceiling tiles, cracked paint and peeling wallpaper.
Your first decision will be about two important options. You can select a complete tear-off and replacement of the existing roof system, or your can elect to have a new roof installed over the existing roof. The best roofing contractors generally will only install a new roof system once the old roof has been torn off and the decking and structure inspected for soundness.
Unfortunately, there is not one product that solves all roofing problems. Sometimes, depending on the structure, it may be a combination of two or more products. The key to selecting the best roofing system(s) for your home or building is identifying the specific roof design requirements your structure has. That’s where an experienced roofing contractor can help.
The price of a new roof depends on many factors, just like the price of a new car. Some roofs last for years, others last for decades. The type of material you select will affect the overall price, but so will the reputation of the roofing contractor. Do your research and select the roofing material and roofing contractor that best fits your specific needs and comfort zone.
That’s a tough one, because generally you will know the true cost of the material and roofing installation only decades later. Your best bet is to choose a reputable roofing contractor, one that scores high on Angie’s List, Google Reviews and past customer testimonials.
When someone on your property gets hurt, you are open to a lawsuit, even people you hire. The roofing company’s insurance covers their employees in case of a work site accident and protects you and your assets.
If your driveway is older or is in poor condition, the less impact on it the better. Generally, roofing dump trucks are lighter and less intrusive than the dropping off and removal of a dumpster. However, permission to use the drive-way is your call and if you choose not to allow its use, then plan on a more expensive roof bid due to having to carry tons of debris by hand to the truck.
Generally the answer is yes. Unless the roof is at the end of its useful life or it was so poorly installed, a repair can be preformed. The real question will be, is it less expensive to repair it or cheaper over the long run to replace it.
You bet. In fact, its better to get the chimney repairs done while the old roof is on rather than work on or around a beautiful new roof. As a note, many roof leaks are related to the chimney flashings or the actual chimney itself.
When your roof gets organic debris on it, the base is laid for mildew and moss. Certainteed recommends that a solution of bleach and water be spayed on the affected areas. Zinc or copper strips help, but they are not very effective over 36” below the applied strip.
Yes it can. Especially if it is wet and heavy. Also, ice dams occur when snow melts near the ridgelines of warm attics and refreezes as it runs over the cooler overhangs. The best prevention to ice dams is a well-ventilated roof. Ice and Water Shield can be applied along these areas for extra protection.
The answer is Yes, but it is crucial that you choose a company that is use to dealing with quickly changing weather patterns and provides a crew that is sufficient to get the job done is a timely manner.
NO. Pressure washing a roof when done carefully minimally remove granules that are so important to the longevity of your roof. Pressure washings when done poorly removes even more granules, exposing the roof to the harmful UV rays of the sun.

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