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What happens when gutters clog
It starts with the trees. Leaves, seeds and twigs from overhanging branches settle in the gutter, and the next rain washes them toward the downspout until the opening is blocked. From then on, every storm adds to the pile.
In heavy rain, the water has nowhere to go. It either spills over the front of the gutter, or it backs up behind the gutter into the fascia board and soffit. Over time the staining turns to rot, and the gutter can start pulling away from the house.
On homes with little or no eave overhang, backed-up water can get under the roof edge and come through the ceiling inside. A stain near an exterior wall is often blamed on the roof when the real cause is a full gutter. Our guide to water stains on the ceiling explains how to tell the difference.
The damage does not stop at the gutter. Debris washed down the downspouts can build up in underground drain lines and clog them. Clearing a buried drain line is harder and more costly than cleaning a gutter, and a blocked line sends water back toward the foundation.
How often do gutters need cleaning?
It depends on what is growing around your house. Homes under heavy tree cover often need cleaning about every six months, in spring and fall. Homes with few trees nearby can usually go about once a year.
The oaks, maples and pines common in Madison and St. Clair counties do not all drop at the same time. Oaks shed catkins in spring and leaves in fall, maples drop their winged seeds in late spring, and pines shed needles through much of the year. A yard with a mix of trees can fill the gutters more than twice a year.
A quick check from the ground: if you see plants growing in the gutter, water pouring over the front in an ordinary rain, or staining on the fascia, the gutters are overdue.
Gutter guards pros and cons
Pros
- Fewer clogs, so the gutters keep draining in heavy rain.
- Less overflow onto the fascia, soffits and foundation.
- Fewer ladder trips to scoop out debris, which matters most on two-story homes.
- Less debris washed into downspouts and underground drain lines.
Cons
- An upfront cost, compared with paying for cleaning as needed.
- They still need occasional brushing off, because debris can sit on top.
- The wrong type for your trees can let pine needles and seeds through, or shed water past the gutter in very heavy rain.
Guard types differ more than most people expect. Our gutter guards page compares the main types and their trade-offs, so we will not repeat that here.
What gutter guards and gutter cleaning cost (national averages)
Gutter cleaning. According to Housecall Pro (January 2026), most professional gutter cleaning jobs cost $125 to $320. One-story homes run about $100 to $180, and two-story homes about $150 to $275.
Professionally installed gutter guards. A This Old House survey (updated October 2026) puts the median project cost at $5,000, with the middle half of homeowners paying $4,138 to $6,000. The average was $39.71 per linear foot.
These are national averages, not our prices. Your price depends on your home; we give a written quote after a free inspection.
The height of the house, the length of the gutters, the guard type and the condition of the existing gutters all change the number for a given home.
When gutter guards are worth it, and when they are not
Usually worth it
- Trees overhang the roof or stand close to the house.
- The home is two stories, so every cleaning means a tall ladder.
- You have had overflow, fascia or soffit damage before.
- The eaves have little or no overhang, so backed-up water can reach the ceiling.
Less worth it
- There are no trees nearby, and the gutters stay clear on their own.
- The gutters are sagging, leaking at the seams or pulling away. Replace them first, because a guard on a failing gutter only hides the problem. See gutter installation and replacement.
If you are unsure, think back to your last few cleanings. If the gutters were packed each time, guards will likely save you trouble. If they were nearly empty, cleaning once a year may be all you need.
Our offer
Every gutter guard install comes with free gutter cleaning, so your new guards go onto clean, free-flowing gutters. See our gutter guard installation page for how we match a guard to your trees and roof edge.
Related services and guides
What to do next
Hail Mary Roofing & Exteriors is based in Glen Carbon, Illinois, serving the Metro East and St. Louis area. Request a free roof inspection with a photo report to understand your roof's condition. Call (618) 806-9898; if water is coming in, we offer 24/7 emergency tarping.
Limited Lifetime Craftsmanship Warranty on asphalt shingle roofs, transferable to a new owner one time; 10-year craftsmanship warranty on all other work.
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