Professional Roof Repair & Installation Contractors in Springfield, OR

Not always, but it is usually best. Primarily, it aids in assessing the condition of the roof's substructure. It is not uncommon for us to find unknown dry rot and pest infestation at the time of tear off. With the roof removed, these problems can be addressed right at the source. Please note that any irregularities in the existing roof will more than likely show through new roofing. With some types of roofing, local building codes limit the number of layers allowed.

We consider a "flat" roof to be a pitch of 3/12 or less. There are methods available to apply standard roofing to lower pitches. Special waterproofing underlayments may be applied or maybe a type of metal roofing would suit your needs. At some point it is best to go with a roofing system designed for completely flat surfaces. After assessing your situation we would be more than happy to advise you on the best options.

Moss is an all too common problem in this area. To remove existing moss you have a couple of options: sweeping the moss off directly or using a "moss killing agent." The latter method usually involves sprinkling a powder over the problem areas which dries out the moss. It is best to keep on top of this problem with annual cleanings. If you prefer, there are professional companies listed in the yellow pages under Moss Control. There are special composition shingles available for installation made with "algae inhibitors" impregnated into the material to retard the growth of moss for up to 15 years.

River Roofing has developed techniques for eliminating 99.9% of the roofing debris from reaching the ground. We understand your concerns and we take great pride in leaving your property and landscaping in pristine condition.

The end result depends on the age, workmanship and quality of cedar used and the power and skill of the washer. We often see shake roofs that have been improperly pressure washed, causing unnecessary damage and resulting in leak problems the following rainy season. If a roof is older, it should be carefully assessed to see if pressure washing or replacement would be most cost effective.