BACKMAR 10, 2026
Seeing orange streaks or flaking metal along your roofline can easily make your stomach drop. Gutters are essential for directing water away from your home’s foundation, so it is completely normal to worry when they start looking worn out.
Looking for more guidance? Take a look at our Repairs overview.
Fortunately, a rusty gutter looks much worse than it actually is. In most cases, finding rust or discoloration does not mean you need to immediately tear down your gutters and pay for a full replacement. Small patches of surface rust and minor holes are highly manageable DIY projects that take just an afternoon to fix.
In this guide, we will walk you through how to safely inspect your gutters, determine what material they are made of, and decide whether a simple patch or a professional repair makes the most sense.
Before climbing a ladder, it helps to understand what you are looking at. Different gutter materials react to weather differently:
Knowing exactly what is happening up there will dictate how you treat it.
Grab a pair of thick work gloves, some safety glasses, and a standard refrigerator magnet.
Safety First: Place a sturdy step-ladder on firm, level ground. Never lean out or overreach while on a ladder. Instead, move the ladder every 6 feet to safely inspect the perimeter of your home.
1. The Magnet Test Hold your magnet against the bottom or side of the gutter. If the magnet sticks, you have steel gutters. If it does not stick, you likely have aluminum or copper gutters.
2. Assess the Damage If you have steel gutters, lightly tap the metal every foot with the handle of a flathead screwdriver. Listen for a hollow sound or feel for areas where the metal flexes easily under gentle finger pressure.
3. Measure the Issue Look closely for any actual holes. Are they wider than 1/4 inch? Use a tape measure to check the length of the damaged section. Record whether the continuously rusted area is under or over 3 feet long. Finally, check your downspouts (the vertical pipes carrying water to the ground) and the fascia board (the wooden board your gutters attach to) for any trailing rust flakes or water damage.
It is important to know your boundaries before starting a repair. Here is how to decide your next steps:
Safe to try yourself:
When to stop and monitor:
When to call a professional:
If your damage falls into the DIY category, here is how you can resolve it.
If the rust is just on the surface and the metal feels solid:
If you have a hole wider than 1/4 inch but the damage is isolated to a small area:
If your magnet didn't stick, you are just dealing with surface corrosion:
Finding rust on your gutters is an incredibly common part of homeownership, particularly in homes older than ten years. By doing a quick magnet test and feeling for soft spots, you can easily determine whether you need a $30 tube of sealant or a conversation with a contractor.
Home maintenance is much less stressful when you take it one step at a time. For more straightforward guides, seasonal maintenance checklists, and a simple way to keep your home's history organized, download the Casa app today. We are here to help you manage your home with confidence.
