You just made a major investment in your St. Cloud home: a new roof, energy-efficient windows, or beautiful LP SmartSide siding. These products come with fantastic manufacturer warranties that promise decades of protection.
But those guarantees are only valid if you uphold your end of the bargain.
At Exterior Pro, we see homeowners inadvertently void their valuable warranties every year. Many times, it’s a simple, seemingly harmless action—like using a pressure washer or trying a quick DIY repair—that can void coverage, leaving you responsible for thousands of dollars in replacement costs.
Here are the top three actions that act as “warranty killers” across your entire exterior, and why hiring a professional is the best defense.
Warranty Killer #1: Improper Installation
This is the number one reason manufacturers deny claims for roofs, siding, windows, and doors. The warranty covers defects in the product, but it does not cover defects in the installation.
Roofing and Siding
Manufacturer warranties (especially high-tier system warranties like those offered by certified Atlas contractors) are only valid if the product is installed according to their exact, often hyper-specific, guidelines.
- Wrong Nailing: For shingles, using the wrong nail length or placing nails outside the designated nailing line can cause shingles to blow off, and the manufacturer will instantly deny the claim.
- Missing Flashing: Cutting corners and failing to install proper flashing in vulnerable areas (like valleys, chimneys, and pipe boots) means any resultant leak is considered a workmanship failure, not a product failure.
- Incorrect Clearances (Siding): Premium siding products like engineered wood (LP SmartSide) require specific clearances (e.g., 6 inches above grade/soil, 2 inches above hard surfaces) to prevent moisture wicking. If your installer ignores these, the resulting rot or swelling voids the product warranty immediately.
The Exterior Pro Solution: We are certified installers for the products we use. When you choose an accredited and licensed local contractor, you are protected by both the manufacturer’s product warranty and our workmanship guarantee. We know the nail patterns, the flashing requirements, and the clearances required to activate and maintain every warranty.
Warranty Killer #2: Unauthorized Alterations
Once a product is installed, any non-factory modification is a major risk, especially for siding, windows, and doors.
Siding: The Danger of Painting Vinyl
This is the most common and expensive mistake we see St. Cloud homeowners make:
- Why It Voids Coverage: Most vinyl siding is engineered to expand and contract freely with temperature changes. Its color (pigment) is formulated to reflect a specific amount of solar heat (Light Reflectance Value, or LRV). Applying a new, dark color—even “vinyl safe” paint—can drastically increase the siding’s heat absorption. This causes the panel to warp, sag, or buckle (thermal distortion), a form of damage the manufacturer will not cover because you altered the product’s thermal properties.
Windows: Adding Aftermarket Films
- Why It Voids Coverage: Applying solar, security, or privacy film to window glass can dramatically increase the temperature of the glass pane itself. This extreme thermal stress can cause the insulated glass unit’s (IGU) seal to fail prematurely, leading to fogging and condensation between the panes. Seal failure is the most common window claim, and if film is present, the manufacturer will deny it.
Doors: Cutting and Adding Hardware
- Why It Voids Coverage: Cutting into a new entry door to install a dog door or aftermarket hardware (like a peephole or deadbolt outside of factory-specified locations) compromises the door’s structural integrity and thermal seal. Likewise, for wood doors, failing to seal or paint all six sides (front, back, and all four edges) immediately after installation can cause moisture absorption and warping, which voids the warranty.
The Exterior Pro Solution: If you need a different color or privacy feature, we guide you to products with factory-applied finishes and integral privacy glass designed to work perfectly with the unit—so the warranty stays intact.
Warranty Killer #3: Aggressive Cleaning or Neglect
Warranties do not cover damage caused by homeowner negligence or the misuse of cleaning equipment.
Roofing and Siding: Pressure Washing
- Why It Voids Coverage: Power washing, especially on a roof, strips away the protective granules from asphalt shingles, drastically shortening their lifespan and exposing the mat underneath. On siding, high pressure can force water behind the panels, damaging the house wrap, sheathing, and insulation. Manufacturers specifically exclude damage caused by excessive pressure washing. Never pressure wash your roof or siding.
Gutters and Roof Ventilation
- Why It Voids Coverage: Many roofing and siding warranties explicitly exclude damage caused by improper water management. If your gutters are consistently clogged, overflow, and cause water to back up under the eave—the resulting fascia rot or siding leak is considered a maintenance issue, not a product defect. Similarly, if your attic ventilation is blocked, the resulting heat buildup can destroy shingles from the underside, voiding your warranty (see our guide on ice dam prevention).
Windows and Doors: Lack of Simple Care
- Why It Voids Coverage: Failing to clear debris from the tracks of sliding patio doors or neglecting routine checks on your window and door weatherstripping can lead to excessive wear, operational failure, and seals breaking down—none of which are covered under standard defects warranties.
Protect Your Investment
Your exterior materials are designed to last for decades, but their warranties are a contract. Before you hire a contractor, paint a window, or pull out the pressure washer, take the time to read the manufacturer’s care instructions.
At Exterior Pro, we not only install certified systems but we also walk you through the care requirements for your new roof, siding, windows, or doors. When you choose us, you are guaranteed to receive the full, non-prorated protection you paid for.
Ready to invest in guaranteed protection for your St. Cloud home?
Contact Exterior Pro Today for a Free, No-Obligation Consultation!
You can also visit our Exterior Remodeling Services page to learn more about our commitment to quality craftsmanship.