When it comes to ensuring that your gutters drain properly, it is important to make sure they are tilted at the correct angle. The general rule of thumb is that for gutters smaller than 40 feet, they should be tilted at a ½ inch per 10 feet towards a downspout. For gutters larger than 40 feet, it is best to tilt the gutter down from the center to a downspout at each end. Alternatively, you can tilt the gutters downward from each end to a single downspout placed in the center of the duct.
Before ordering gutters and accessories, it is important to determine which option works best for your home. If you are replacing a gutter, once you have removed the old gutter, prepare the fascia plate with primer. If the fascia is damaged or rotten, replace it. Then determine the correct slope of the gutter and draw a chalk line on the fascia to use as a reference. The gutters should be tilted 1 inch every 20 feet towards the downspout. For gutters over 35 feet long, it is necessary to have a downspout at each end, tilting the gutter from the center to each downspout.
This will ensure that your gutters are draining properly and efficiently.