Signs include: ice dams in winter, excessive heat in upper floors in summer, peeling paint on soffits, or mold/moisture in the attic. We assess ventilation as part of every roof inspection.
Building code requires 1 sq ft of net free area for every 150 sq ft of attic floor — split equally between intake (soffit) and exhaust (ridge). Most NJ homes fall short.
Yes. Ridge vents can be cut in, soffit vents installed, and attic fans added independently of a roof replacement.