Homeowners want to save money. That’s why many try DIY roof repairs. But what seems like a quick fix can cost you much more in the long run. Insurance companies often deny claims if they find out you made certain repairs yourself. This isn’t just about shoddy work. It’s about risk, safety, and policy rules. If you’re not careful, your DIY project could leave you paying for a new roof out of pocket. Here are nine common DIY roof repairs that have left homeowners without coverage.
1. Replacing Shingles Without Matching Materials
Swapping out a few shingles sounds easy. But if you use the wrong type, size, or color, you can create weak spots. Insurance companies look for uniformity. Mismatched shingles can let water in and cause leaks. If an adjuster sees this, they may call it improper repair and deny your claim. Always use the exact materials your roof needs, or better yet, hire a pro.
2. Using Unapproved Sealants or Caulks
Many homeowners grab whatever sealant is on sale. But not all caulks are made for roofs. Some break down in sunlight or don’t bond with roofing materials. If you use the wrong product, water can seep in and cause hidden damage. Insurers often check for proper materials. If they find unapproved sealants, they may say you failed to maintain your roof and refuse to pay for repairs.
3. Installing New Layers Over Old Roofing
It’s tempting to put new shingles over old ones to save time and money. But most insurance policies don’t cover roofs with more than two layers. Extra layers add weight and can hide problems underneath. If you file a claim, the adjuster may spot the extra layers and deny coverage. This is a common reason for claim rejection, especially after storms.
4. DIY Flashing Repairs
Flashing keeps water out of the seams around chimneys, vents, and skylights. If you patch flashing with tape or the wrong metal, you risk leaks. Insurance companies expect flashing to be installed to code. If your repair fails and causes water damage, your claim may be denied for improper installation.
5. Ignoring Underlayment Replacement
The underlayment is a water-resistant layer beneath your shingles. Some DIYers skip replacing it to save money. But if water gets past your shingles, the underlayment is your last defense. Skipping this step is a big red flag for insurers. If a leak happens, they may say you didn’t maintain your roof and refuse to cover the damage.
6. Using Nails or Fasteners Incorrectly
Roofing nails have to be the right type, length, and placed in the right spots. If you use the wrong nails or don’t drive them in properly, shingles can blow off in a storm. Insurance adjusters look for this. If they see evidence of poor nailing, they may call it improper installation and deny your claim.
7. Patching Leaks with Tar or Spray Foam
Some people try to stop leaks with roofing tar or spray foam. These are temporary fixes at best. They can trap moisture and cause rot. If you file a claim for water damage and the adjuster finds tar or foam patches, they may say you made an unapproved repair and deny coverage.
8. Removing or Covering Up Ventilation
Proper roof ventilation prevents heat and moisture buildup. Some DIYers block vents to stop leaks or pests. But this can cause mold, rot, and shingle damage. Insurance companies expect you to keep your roof ventilated. If you block vents and your roof fails, your claim may be denied for neglect.
9. Failing to Get Permits or Inspections
Many cities require permits for roof repairs. Skipping this step can void your insurance. If you don’t get the right permits or fail to have your work inspected, your insurer may say the repair wasn’t up to code. This is a common reason for claim denial, especially after major storms or fires.
Why DIY Roof Repairs Can Cost You More
DIY roof repairs might seem like a way to save money, but they often lead to bigger problems. Insurance companies want to see that your roof is safe, up to code, and properly maintained. If you cut corners, use the wrong materials, or skip steps, you risk losing your coverage. The cost of a denied claim can be much higher than the price of hiring a professional. Before you grab a ladder, check your policy and think about the risks. Sometimes, the best way to protect your home is to call an expert.
Have you ever tried a DIY roof repair? Did it affect your insurance? Share your story in the comments.
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