Extensive research and development of our products have led to our exclusive technology: Alu-Perf. The product has 489 perforations at every 19 “(48 cm). These multiple perforations allow water to flow at the same flow rate as a 2 “x 3” (5 cm x 7.5 cm) downpipe. Rigorous testing by an independent certification body proves that Alu-Rex products can drain more than 32.9 inches (836 mm) of water per hour over 20 feet (6 m). The 44,000,000 feet (13,411,200 meters) of Alu-Rex products installed around the world also speak for themselves.
As an indication, the world’s largest precipitation was 12 inches (305 mm) in one hour (Holt, MO, 1947). In comparison, the 1996 Saguenay (Quebec) deluge was caused by a drop of 11 inches (275 mm) of rain in three days. Alu-Rex products could have contained all these precipitations in one hour! And even three times more!
Note that water discharges are usually caused by the gutters themselves (not wide enough and deep for the roof surface) or by the downspouts (not enough for the roof surface). It is important to ensure that the downspouts are installed in sufficient numbers so as to prevent backflow. For this reason, it is necessary to calculate that a downspout evacuates an equivalent of 600 sq. ft. (56 m2) of roof.
In summary, if your own gutters do not cause backups during heavy rains, the Gutter Clean System® and Fixa-Tech® will not cause them.