By Omer Okic, owner of Ultimate Exteriors · 28 years on Des Moines roofsUpdated October 2026
The costliest roofing mistakes are putting off repairs, hiring an uninsured contractor, picking the cheapest bid, ignoring ventilation and gutters, and trying DIY repairs.
- Small leaks become rotted decking
- Ask for proof of insurance before work starts
- Compare what each bid includes, not just price
- Ventilation and gutters affect roof life
A roof is one of the biggest investments in your home, and a few common mistakes can shorten its life or cost you thousands. Here are the five we see most often in Central Iowa.
1. Putting off repairs and maintenance
A few missing shingles or a small ceiling stain can turn into rotted decking and damaged insulation. Des Moines spring rain, summer storms and winter snow all add stress. Regular inspections catch small problems while they're still small, and many contractors, including us, offer them free.
2. Hiring an unqualified or uninsured contractor
Storm chasers who knock on doors after a hailstorm often do poor work and are gone when problems show up. If an uninsured worker is hurt on your property, you could be liable, and some manufacturer warranties require a qualified installer. Check licensing, insurance, references, reviews and a local business address before you hire.
3. Choosing the cheapest bid
A low price usually means something was cut: materials, labor, underlayment or ice and water shield. Those shortcuts can shorten a roof's life and void warranties. Compare itemized bids and ask exactly which materials and warranties are included.
4. Ignoring attic ventilation and gutters
Poor ventilation cooks shingles in summer and contributes to ice dams in winter. Clogged gutters let water back up and pool near your foundation. Balanced intake and exhaust ventilation, gutters cleaned at least twice a year and gutter guards where they make sense all protect your roof.
5. Attempting DIY roof repairs
Roof work comes with real fall risk, and well-meaning repairs can crack shingles, compress decking or leave seams that fail in the next rain. A professional inspection and repair costs less than fixing a DIY job, and a licensed, insured contractor understands local codes.
Comparing roofing quotes? Our guide to what a new roof costs in Des Moines shows what a complete quote should include and how to compare bids fairly.