Repair

When to Replace Your Roof: Signs Your Fort Collins Roof Is Done

By Fort Collins Roof Repair · September 6, 2026 · 7 min read

Most Fort Collins roofs don't fail suddenly. They wear out over two or three summers, and the signs are visible from the driveway if you know what you're looking at. Knowing when to replace an asphalt roof starts with reading it the way a roofer does on a first visit, and you can do most of it yourself before you call anyone.

Start with the age, then adjust for the sun

Ask when it was last replaced. In Fort Collins that's often "after the hailstorm," and the neighbors will remember which one. An architectural shingle roof here lasts 18–22 years; a three-tab roof, 12–16. That's shorter than the wrapper says because of the noticeably stronger UV at 5,000 feet, and it's the sun, not the snow, that ages asphalt.

Then look at which way the house faces. The south and west slopes get the sun and the wind; they can be five years further along than the north slope on the same house. A roof that looks fine from the street, because the street is on the north, may be bald in back.

What you can see from the ground

Granule loss

Granules are the roof's sunscreen. Once they go, the asphalt underneath dries out and cracks in a season. Look for:

• Piles of granules at the downspout outlets and in the splash blocks after every rain
• A gutter with an inch of grit in the bottom
• Shiny black patches on the south slope where the mat shows through
• Shingles that look lighter or blotchy compared to the north side

Some granule loss is normal in the first year of a new roof and after any hailstorm. Steady loss year after year on an older roof is the roof telling you the clock is running.

Curling and cupping

Shingle corners lifting up (curling) or the middle of the shingle sinking so the edges rise (cupping) mean the asphalt has lost its oils. A curled shingle can't seal, so the next chinook lifts it, and the next hailstorm cracks it where it's bent. Once curling shows on more than a few shingles per slope, the roof is in its last two or three years.

Cracked or missing ridge caps

Ridge caps take the sun on both faces and hail from every direction, so they go first. Cracks along the ridge, caps with corners missing, or pieces on the lawn after a wind night are an early sign. Replacing ridge caps is a $400–$900 repair, and worth doing if the field shingles have years left. If the field is curling too, it's a replacement.

Hail bruising

After any storm with hail of an inch or more, the roof may have soft dark spots the size of a fingertip where the stone fractured the mat. They don't leak right away. They leak in two to four years as the exposed asphalt weathers open. A roof with bruising on every slope isn't near the end — it's at it, and it's an insurance claim rather than a purchase. The storm checklist covers how to spot the signs from the ground.

Cracked pipe boots

Not a sign of the roof's age on its own — boots fail at 8–12 years regardless. But if the boots are cracked and the shingles around them are curling and losing granules, that's a roof where everything is aging together.

Two layers

Look at the drip edge from a ladder. Two thicknesses of shingle means the roof was roofed over rather than torn off, and that second layer has probably been up there since the 1990s. It's due, and both layers come off when it goes.

What you find in the attic

Daylight through the deck, soft plywood under your hand, rusted nail tips across the whole attic, and brown stains along the eaves from ice dams. The stains along the eaves in particular mean the roof has no ice-and-water shield, which dates it to before the early 2000s.

When to replace an asphalt roof: putting it together

What to do with three years left

Use them. Fix the boots and ridge caps so the roof doesn't leak while you wait. Talk to your insurance agent about how your policy treats a roof over 15 years, because some Colorado carriers switch older roofs to actual cash value or ask for an inspection at renewal — check your policy. And decide now whether the next roof is Class 4, so that when the hail comes it's the last replacement you have to think about for a long time. A roof inspection with a written report gives you a remaining-life estimate to plan around; the replacement page covers what the new roof should include.

A ten-minute walk-around

Do this on a clear morning, from the ground, once in spring and once in fall:

1. Start at the downspouts. Look for granules in the splash blocks and at the outlets.
2. Walk to the south and west sides. Use binoculars on the slopes you can't see from the street. Look for bare patches, curled corners and uneven color.
3. Check the ridge. Cracked or missing caps show against the sky.
4. Look at every vent pipe. A dark ring or a split collar at the base means a boot is going.
5. Check the gutters. New dents mean new hail.
6. Go into the attic. Look for daylight, stains and soft spots in the decking.

Write down what you find and take photos from the same spots each time. Comparing one season to the next shows you how fast the roof is going.

What a remaining-life estimate should tell you

If you have a roofer look at it, the answer should be more useful than "it's old." Ask for:

• A number of years, with the reasons behind it
• Which slope is furthest along
• What repairs would keep it dry in the meantime, and what they cost
• Whether any damage looks like hail rather than age

Planning the replacement

Once you know the roof has two or three years left, you have time to do it well:

• Set a budget. The cost page has typical ranges by house size.
• Pick the season. The quiet months from October through March usually mean faster dates.
• Decide on the shingle. Standard architectural or Class 4 is the main choice here.
• Call your agent. Ask how your policy treats the old roof and whether a new one changes anything.
• Get two or three written estimates on the same scope.

What not to do

Don't roof over the old shingles to save money; a second layer hides the deck and shortens the new roof's life. Don't wait for a leak to force a rushed decision in the middle of a storm backlog. And don't let a knock on the door after a storm decide when to replace a roof that was already on your list.

Repairs worth doing in the last few years

A roof with two or three years left still deserves the small fixes that keep it dry. A new pipe boot, a few resealed shingles after a windstorm, or a replaced ridge cap cost a few hundred dollars and protect the deck, the insulation and the ceilings until the new roof goes on. What isn't worth it at that stage is a big repair that a replacement would redo anyway, such as re-laying a whole valley or retrofitting membrane along every eave. Ask the roofer which category each item falls in, and put the money from the second group toward the new roof.

Keep the paperwork

Whatever you decide, keep the photos, the estimates and the date you first saw each sign. If you sell before you replace, a buyer's inspector will find the same things, and having your own record of when they started and what you did about them makes the conversation easier.