The Des Moines Guide: Vetting & Hiring an Elite Siding Contractor
Quick Answer
Is your contractor cutting corners on your siding installation?
Installing siding is vastly more complex than throwing shingles on a roof. A roofing crew can replace a roof in six hours; a siding crew must act as precision carpenters, managing overlapping planes, house wrap membranes, and custom metal brake work over a two-week period.
Giving a $30,000 siding contract to the lowest bidder who lacks technical craftsmanship will inevitably lead to water penetrating your walls and rotting your home from the inside out. Here are the ironclad rules for hiring a legitimate, premier siding contractor in Central Iowa.
Rule #1: Demand Manufacturer Certifications
Premium siding materials (like James Hardie and LP SmartSide) have incredibly rigorous, hundred-page installation manuals. If a contractor nails a board slightly too high, fails to leave a 3/16-inch thermal expansion gap at a trim board, or uses the wrong caulk, the manufacturer will instantly void your 50-year warranty.
- Do not accept oral assurances. Ask to see their actual certification badges (e.g., James Hardie Elite Preferred Contractor or LP BuildSmart Preferred Contractor).
- These badges mean the manufacturer has audited the contractor's work, vetted their financial stability, and trusts them implicitly to execute their strict engineering tolerances.
Rule #2: Verify the "Trim & Flashing" Capabilities
Siding rarely fails in the middle of a panel; it fails where it meets a window, a door, a corner, or the roofline.
The "Two-Truck" Test
A cheap contractor will slap up vinyl J-channels everywhere and call it a day. A premium contractor brings an aluminum metal brake to the job site. They custom-fabricate thick aluminum coil stock to completely wrap your intricate window casings, wood fascia, and complex intersections. This seals the weak points perfectly. Explicitly ask them: "Who is doing the custom metal wrap on my windows?"
Rule #3: The Lead-Safe Testing Mandate
An enormous percentage of homes in older Des Moines neighborhoods (Sherman Hill, Waterbury, Beaverdale) were built well before 1978. If you have an older home, the original exterior paint likely contains lead.
- Federal Law: The EPA requires any contractor disturbing more than 20 square feet of exterior painted surface on a pre-1978 home to be an EPA Lead-Safe Certified Firm.
- The Danger: If a shady contractor rips off your old lead-painted cedar siding without HEPA-vacuums, containment plastic, and hazmat protocol, they will scatter toxic lead dust across your lawn, poisoning the soil where your children and pets play. If they don't test for lead upfront, disqualify them immediately.
Rule #4: Audit Their Insurance Profile (Not Just Liability)
Most homeowners know to ask for General Liability insurance (which covers damage to your property). However, the massive hidden financial risk to you is Workers' Compensation.
Siding involves workers standing 30 feet in the air on pump-jack scaffolding handling heavy power saws. If an uninsured worker falls off scaffolding on your property, you and your homeowner's insurance policy can be sued to cover their massive medical bills and lost wages. Ensure the owner provides a physical Certificate of Insurance showing robust Workers' Comp coverage specifically for carpentry/siding.
Red Flags: Identifying the "Storm Chaser"
After an Iowa derecho or heavy hail storm, out-of-state crews flock to Des Moines. Avoid them at all costs.
- They have out-of-state license plates (often Texas, Colorado, or Illinois).
- They demand a 50% cash down payment before materials are delivered.
- They offer to "waive your deductible" (This is illegal in Iowa and constitutes insurance fraud).
- Their estimate is scribbled on a generic notepad without an itemized breakdown of sheathing costs, house wrap types, or specific metal flashing protocols.