Have a question about roofing and renovations? Check out our list of frequently asked questions below to see if we are able to answer your question. If after reading the answer you have further questions, please feel free to contact us today to talk with one of our experts:
Actual roof system life span is determined by a number of factors, including local climatic and environmental conditions, proper building and roof system design, material quality and suitability, proper application and adequate roof maintenance.
Roofing product manufacturers offer a variety of warranties on their products. Take a close look at those warranties to see what responsibilities and financial obligations manufacturers will assume if their products fail to reach their expected lives.
Though the CertainTeed and GAF shingles we use today have lifetime warranties, they didn’t a decade ago. We tell our customers that 12 years is a good rule of thumb to go by. At that point, check for these warning signs:
- Curling shingles
- Loss of the asphalt granulation (looks like bald spots)
- Evidence of leaking on your ceilings
- Cracked or discolored interior drywall (painted or wallpapered)
- Decaying shingles
- Missing shingles
- Visible cracks
- Wind damage
- Broken or damaged shingles
- Rusted or missing flashing
If a residential roof is over 15 years old, we recommend you call us out for a look. Sometimes damage isn’t visible to the untrained eye on the ground, and catching it early can avoid expensive interior repairs in the future.
Many roofing contractors may be willing to simply nail new shingles on top of old shingles, but we always advises stripping the old materials complete off, all the way down to the deck, and then adding the new materials. Any defects, vulnerabilities, and potential problems in the plywood deck or truss system will go unnoticed unless you de-nail & re-nail.
Here are a few situations where you will need to remove the old roof before completing a reroofing service:
- Shingles are missing, curled, split, or mossy.
- The roof decking is sagging due to rot or deterioration.
- The new shingles are lighter than your current roofing shingles. (This will cause all of the old bumps & ridges to show through the new roofing materials.)
- Your current roofing system has more than one layer of shingles.
A shingle at the end of its life is bubbled in appearance and brittle to the touch. A 20 year shingle is warranted by the manufacturer to have a useful life, under optimal ventilation conditions, of 20 years. Hail does several things:
- Accelerates granule loss
- Accelerates shingle aging
- Voids manufacturers' warranties
There are several primary types of roof ventilation:
- Static Vents are the least expensive, but only provide ventilation in the immediate area around where they are installed.
- Gable Vents are usually installed on the ends of a home. The wind must blow directly into one vent to get the air flowing across the attic and out the other vent.
- Turbine Vents have a similar problem with Static Vents in that they only cover the area around the vent. A Turbine vent covers a larger area as it creates a greater airflow.
- Power Fans provide a high airflow, but they take energy to operate so do create a small ongoing expense. Most installations of power fans include a thermostat that controls when the fan operates. Generally that means your attic will not be well ventilated during the winter months.
The best option for the money is a ridge vent. This vent is positioned along the entire length of the roof peak. In addition to their effectiveness, ridge vents blend in with the roof line, making them less visible from the ground. After years of testing and research it has been proven that ridge vents with external baffles, combined with under eave venting, is the most efficient and effective system that can be installed in your home.
The truth is that is the chimney is not re-flashed when the roof is installed, the chances of the chimney leaking in the first 3 to 5 years is very high.
If you're going to make the investment of getting a new roof system installed on your home, ensure that it will keep you dry for years down the road. Make sure the contractor includes re- flashing the chimney in the proposal.