On the other hand, any per-unit retain certificate (other than capital stock) which is redeemable only in the discretion of the cooperative association, or which is otherwise subject to conditions beyond the control of the patron, shall be considered not to have any fair market value at the time of its issue, unless it is clearly established to the contrary.
Composition roof lifeAsphalt shingles are rated at 20, 25, 30, or 35 years. The average roof life is 5 to 10 years less, depending on climate conditions in your area. The life of any asphalt shingle roof is effected if Algae and Mildew is allowed to grow on it.
How Long Materials Last. The industry wide estimates of how long different roofing materials last are given below: Asphalt Roofing shingles last 15 to 20 years. Concrete or clay tiles typically last at least 20 years. Wood shingles are good for 10 to 40 years. Metal Roofing shingles or panels last 15 to 40 years.