Gutters overflow in heavy rain for several reasons. The main reasons why your gutters could be overflowing in heavy rain include:

• Not enough downspouts to effectively remove water from your gutters

• Too small of a gutter width—the average gutter size is four to six inches

• Clogged gutters

• Incorrect slope

If you believe your gutters were installed incorrectly, it’s a good idea to know who to call for gutter leaks. Speak with a local gutter specialist to get to the bottom of your gutter system to stop water from flooding your property or yard ASAP.

Regular cleaning, checking for leaks, and applying protective coatings help prevent corrosion.

Walking on the roof to clean gutters is unsafe and not recommended due to significant safety risks. It is especially dangerous on steep or slippery roofs, or if the roof is wet or covered in leaves, which increases the chance of a fall. In addition to personal injury, walking on the roof can damage shingles, potentially leading to water leaks. Instead of walking on the roof, use a sturdy ladder positioned on a stable surface to access the gutters. Be aware that using a ladder also carries risks, as it can be difficult to maintain balance while performing the work. You can also use ground-based cleaning tools. For safety reasons and to prevent damage to your roof, hiring a professional to clean your gutters is the best and safest option.

The cost to install a downspout extension or reroute a downspout generally falls between $30 and $200. The final price depends on factors like whether you DIY the project or hire a gutter professional, the complexity of your gutter system, and the length of the new extension. A simple, above-ground DIY installation can cost as little as $30 for materials. In contrast, a more complex project involving professional installation and digging trenches for underground piping could cost over $1,000. This is still a significant saving compared to replacing your entire gutter system, which costs around $1,900 on average.