Got a Roof Letter From Your Insurance Company? What to Do Next

Opening a roof letter from your insurance company is stressful. Usually it says an inspector or an aerial photo flagged something on your roof, and you have a set number of days to fix it or risk a non-renewal. The good news is that many of these letters in the Charleston area are about things that can be fixed fast, like black streaks, algae, moss, or debris.

This guide explains what these letters usually mean, how to figure out whether you need a cleaning or a repair, and how to send your insurer the proof they want before the deadline. We wash roofs across Summerville, Charleston, Mount Pleasant, and Goose Creek, so we have helped plenty of homeowners through this exact situation.

Why Insurance Companies Send Roof Letters

Insurers check roofs more often than many homeowners realize. Some send an inspector to the property. Others review aerial or satellite images when your policy is up for renewal. If something on the roof suggests a higher risk of a future claim, they send a letter asking you to fix it.

From the insurer's view, a roof covered in dark growth or debris can look like a roof that holds moisture, wears out faster, or hides damage. They are not always saying the roof is failing. Often they just want to see that it has been maintained.

Items commonly flagged on Lowcountry roofs

• Black streaks: dark vertical stains, usually from algae that feeds on the limestone filler in asphalt shingles.
• Moss and lichen: green or crusty patches, common on shaded slopes under live oaks and pines.
• Debris buildup: pine straw, leaves, and branches sitting in valleys or behind chimneys.
• Granule loss or curling shingles: signs of age or wear that need a roofer, not a cleaner.
• Missing or damaged shingles: often after a storm, again a roofer's job.
• Clogged gutters: sometimes mentioned because overflow can damage fascia and the roof edge.

Step-by-Step: What to Do After You Get the Letter

1. Find the deadline and the exact wording. Look for the date by which they need proof and the specific items listed, such as "remove organic growth" or "replace damaged shingles." Write both down. The wording tells you who you need to call.
2. Call your agent before you hire anyone. Ask what counts as proof. Some insurers want photos only. Others want a paid invoice, a contractor statement, or a re-inspection. Ask whether the deadline can be extended if you are booked out.
3. Separate cleaning issues from repair issues. Algae, moss, lichen, and debris are cleaning problems. Missing, cracked, or curling shingles and soft decking are repair problems. Many letters include both.
4. Get a roofer for anything structural. If repairs are listed, have a licensed roofer inspect and give you a written estimate. If the roofer says the roof is near the end of its life, you may need a different conversation with your insurer.
5. Book a soft wash for organic growth. Professional roof cleaning and soft washing kills the algae, moss, and lichen at the root instead of blasting the surface.
6. Document everything. Take wide and close-up photos before work starts and after it is done, from the same angles. Ask your contractor for dated photos and an itemized invoice.
7. Send proof before the deadline. Email it to your agent and keep a copy. Follow up by phone a few days later to confirm it was received and attached to your policy file.
8. Set a maintenance plan. Growth comes back in our climate. A plan keeps you from getting the same letter again in two or three years.

Cleaning or Repair? A Quick Guide

This table helps you match what the letter says to the right fix. If you are not sure, a photo of the area sent to a pro can usually settle it quickly.

Why Roofs Should Be Soft Washed, Not Pressure Washed

When people see a dirty roof, their first thought is often to rent a pressure washer. On asphalt shingles, that can cause the very problem your insurer is worried about. High pressure can strip the protective granules, lift shingle edges, and push water under the roof surface. Some shingle manufacturers warn that pressure washing can affect warranty coverage.

Soft washing uses low pressure and a cleaning solution that kills algae, moss, and lichen. The growth dies at the root, and remaining stains fade as rain rinses the roof over the following days and weeks. The shingles stay intact, which is exactly what an insurer wants to see.

What a proper roof soft wash looks like

• Plants and shrubs around the house are wet down and protected before and after application.
• The solution is applied with low pressure, about the same as a garden hose.
• Gutters and downspouts are checked so runoff flows where it should.
• No one walks on fragile or steep sections unless it is safe.
• You get before-and-after photos you can send to your insurance company.

Want more detail on the growth itself? Our guide to black streaks on roofs in Charleston explains what causes them and why they keep coming back.

Why Charleston-Area Roofs Get Flagged So Often

Our climate is close to ideal for roof growth. Warm temperatures, high humidity, and frequent rain give algae and moss a long growing season. Big shade trees, which are part of the charm of Summerville and older Charleston neighborhoods, keep north-facing slopes damp for hours after a storm.

Salt air near Mount Pleasant, Folly Beach, and the islands also leaves a film on surfaces that holds moisture. That is one reason coastal homes often need exterior cleaning more often than inland homes. We cover that in more depth in our article on salt air and humidity in Charleston.

Mistakes to Avoid

• Waiting until the last week. Good contractors book out, especially in spring and fall. Call as soon as the letter arrives.
• Climbing up there yourself. Wet, algae-covered shingles are slippery. A fall costs far more than a cleaning.
• Using bleach from the garage at full strength. Unbalanced mixes can burn landscaping and stain siding.
• Hiring without asking about method. If a company plans to pressure wash shingles, keep looking.
• Not saving proof. Without photos and an invoice, you may have to pay for a re-inspection or do it all again.
• Assuming cleaning fixes everything. If the letter lists damaged shingles, a cleaning alone will not satisfy the insurer.

How Much Does It Cost to Respond?

For most homes, a roof soft wash costs far less than a repair or replacement. Price depends on roof size, pitch, how heavy the growth is, and access. For local ranges and the factors that move the price, see our roof cleaning cost guide for Charleston. If gutters were also listed, our gutter cleaning service can usually be done on the same visit.

How to Keep From Getting Another Letter

• Have the roof soft washed every two to three years, or sooner on shaded slopes.
• Trim branches that hang over the roof to let in sun and cut down on debris.
• Clean gutters at least twice a year, especially after oak and pine drop.
• Take a quick photo of your roof each year so you can spot changes early.
• Keep invoices from roof work in one folder for future renewals.

This article is general information, not insurance or legal advice. Policy terms and requirements vary by company, so always confirm the details with your own agent.

Frequently Asked Questions

Related Reading