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Call a professional certified roofer who can do a full inspection and report of how to proceed. Professional roofers can bring insite and cost savings others might not. They have years of experience and a trained eye to make sure all problems with a roof are discovered and remedied! Remember - When hail hits an asphalt shingle it often knocks off the protective granule coating. Once the granules are gone, the protective layer underneath is exposed to the elements. Always call a professional roofer!
If actual damage has occurred to the roof, due to hail, there is really no other way to fix the damage, except replacing the roof system.
Depending on the type of roof that you have, if the damage is minor, you might be able to complete a spot repair, but that also depends on the condition of the roof. Hail typically falls randomly over the entire roof, so when there is damage, it tends to be all over. If your roof is older, it might not be in repairable condition, or your roofing material might have been discontinued and have no match available for sale.
I suggest having a Haag Engineering certified roof inspector or a structural engineer evaluate the roof and tell you if you have another option.
The most important thing would to review its structual integrity. This can be accomplished by removing some of the soffit panels and taking a peak inside. It could be a a rafter tail is comprimised or broken. Therefore, it would need to be fixed by lifting and sistering. (placing dimensional lumber beside the rafter tail and fastening together). Another fix would be to install a column to support the roof. Installing the column would require a stable footing below, (a concrete pad) and lifting the roof to the proper slope and affixing the colum to the sub-fascia board on the eave. The column method would provide the best support over time and combat heavy snow loads, however a "post" would be in the walk path most likely.
You can proform both jobs at the same time if you are good at what you do. I have in the past grinded a Grove in the brick chimney all four sides then used a brake to bend a little half inch lip on the top of my flashing metal flashing into massonary Grove then caulked you will never ever have to worry about again in your lifetime Only reason I did massonary work first is because I didn't want to get my shingles all dusted.
The masonry work should be performed prior to repairs to the existing roofing, unless the roof is leaking, whereupon you may need to make intermediate repairs to stop the leaking while the masonry work is performed.
Our recommendation would be to do the massonry work first and then roofing for a few different reasons.
1.This gives the masons freedom to step and walk on the roof without causing damage to the new shingles.
2. You will want to make sure the new flashing that is intstalled around the chimney is installed correctly, accounting for any masonry changes and is not damaged due to installation.
3. Ultimately, that the new roof is not damaged and that the warranty does not get voided.
Each case is unique but in general, the chimney should be done first. Special attention should be paid to the roof flashings around the chimney. If the flashings are behind the stone then make sure they extend far enough into the shingles so the new roof can be flashed properly. If the flashings are surface mounted and there is a counter flashing then the roofer should have no problem making the chimney base watertight
Proper ventilation plays an important role in prolonging the life of your roof. During winter, attic ventilation is needed to prevent ice dams from forming, and during the hot summer months, ventilation helps to remove hot air which reduces mold growth and protects the shingles from excessive heat. Choosing the best attic ventilation is an important part of the process. Turbines or Ridge Vents are 2 of the choices. A turbine system is installed directly on the top of a roof and uses wind power to suck hot and humid air out of the attic. A turbine has a series of vanes that spin as wind passes through them. They are less costly dues to the fact that only a few shingles need to be removed and an appropriately sized hole is then drilled through the roof. Turbines do cause more air movement than ridge vents and this is due to their moving vanes. However if you do not live somewhere that has winds or are sheltered from them this system may not work as effectively when the weather gets very hot during the Summer season. A ridge vent runs across the top of the roof's peak. Unlike turbines, this venting style does not have any moving parts. A ridge vent is similar to a screen and allows heat to escape up and out of the attic. Ridge vent systems normally run the full length of the roof. For this system to be installed on an existing roof, the entire peak must be cut away, which can make the installation more expensive than installing a turbine. They cannot be installed on a flat roof or one with a pitch of less than 212 degrees. A ridge vent is a passive system and offers less air movement, and in moderate climates this style tends to be sufficient. In more extreme climates, one or more turbines will provide better circulation. For optimal performance, ridge vents require soffit venting to bring air up and out the top of the roof. Roof ridge vents help to release moisture from homes, which is especially useful during the winter when moisture has a greater impact. Ventilation With the help of wind, a ventilation system is created in the attic with a roof ridge vent. As wind passes over the roof ridge vent, it draws air out of the attic. The problem with traditional roofing is that once the outside air goes into the attic, it has no way to escape. Roof ridge-vent allows the outside air that enters to escape out the top of the roof, preventing damage--such as premature aging and cracking--to the attic and roof. With the help of wind, a ventilation system is created in the attic with a roof ridge vent. As wind passes over the roof ridge vent, it draws air out of the attic. Fresh air is then drawn into the underside of the vent, creating a circulation system of fresh air. Moisture can be released from many activities that are performed within homes, including running a washer, using a dishwasher or taking a shower. Moisture is one of the leading causes of damage to rafters, shingles, walls and insulation within homes. Roof ridge vents help to release moisture from homes, which is especially useful during the winter when moisture has a greater impact. Most homeowners prefer the look of roof ridge vents--which are sleek and blend in well with the other shingles--to other forms of ventilation systems, which often consist of large fans, turbines and vents. Other Systems Another benefit of roof ridge ventilation systems is that they are effective without being used in combination with other systems. Other types of ventilation systems, such as fans and powered ventilators, can even have an adverse effect when used with roof ridge vents because of airflow issues. It is very important that's your roof and roof system is installed correctly by a licensed roofing contractor. A roofing contractor can also help you determine the best type of attic ventilation for your home.
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