How can I reduce some of the problems associated with low slope roofs?
Low slope roofs are more susceptible to water entry due to ice dams and wind-driven rain. Therefore, the key to a successful low slope roof is to increase the watershedding properties of the roof system. Rain and melting snow do not run off quickly on low slope roofs. As a result, the potential for ice dams is increased. By providing adequate ventilation the formation of ice dams can be decreased. Note: “The National Building Code of Canada allows various types of ice dam membranes to be used, but CASMA recommends that self-adhering modified asphalt membranes be used.” (CASMA Technical Bulletin No. 16, 1998) Wind-driven rain is another concern associated with low slope roofs. By improving the underlayment or by using a special shingle application method, the damaged caused by wind-driven rain can be reduced.
Low slope roofs are more susceptible to water entry due to ice dams and wind-driven rain. Therefore, the key to a successful low slope roof is to increase the watershedding properties of the roof system. Rain and melting snow do not run off quickly on low slope roofs. As a result, the potential for ice dams is increased. By providing adequate ventilation the formation of ice dams can be decreased. Note: “The National Building Code of Canada allows various types of ice dam membranes to be used, but CASMA recommends that self-adhering modified asphalt membranes be used.” (CASMA Technical Bulletin No. 16, 1998) Wind-driven rain is another concern associated with low slope roofs. By improving the underlayment or by using a special shingle application method, the damaged caused by wind-driven rain can be reduced. See article or CASMA Technical Bulletin No. 16 (1998) for more information.
Low slope roofs are more susceptible to water entry due to ice dams and wind-driven rain. Therefore, the key to a successful low slope roof is to increase the watershedding properties of the roof system. Rain and melting snow do not run off quickly on low slope roofs. As a result, the potential for ice dams is increased. By providing adequate ventilation the formation of ice dams can be decreased. Wind-driven rain is another concern associated with low slope roofs. By improving the underlayment or by using a special shingle application method, the damaged caused by wind-driven rain can be reduced. See ARMA Form No. 213-RR-87 (1993) for more information.
