InterNACHI Standards of Practice

Our roof inspections strictly adhere to the International Association of Certified Home Inspectors (InterNACHI) Standards of Practice. We conduct thorough visual inspections of all accessible roof surfaces, components, and drainage systems to identify defects, safety hazards, and maintenance concerns.

Professional Drone Roof Inspection in Winthrop MN

Advanced drone technology for thorough roof inspections in Winthrop, MN

What We Inspect on Your Roof

Roofing Materials & Shingles

Shingle type, age, and overall condition
Missing, damaged, or curling shingles
Granule loss and bare spots
Proper installation and alignment
Wind damage and lifted tabs
Hail damage (dimpling, bruising)
Algae and moss growth
End-of-life indicators

Flashing & Waterproofing

Chimney flashing and counter-flashing
Valley flashing condition
Vent pipe flashing and boot seals
Skylight flashing and seals
Wall-to-roof flashing
Drip edge installation
Ice and water shield (where visible)
Caulking and sealant condition

Roof Ventilation

Ridge vent installation and condition
Soffit vents and intake ventilation
Gable vents and functionality
Roof turbines and powered vents
Proper ventilation balance
Obstructed or blocked vents
Attic fan operation (when accessible)

Gutters & Drainage

Gutter attachment and slope
Gutter condition and rust
Downspout installation and discharge
Debris and blockages
Gutter guards and screens
Proper water flow and drainage
Extensions and splash blocks

Roof Structure & Penetrations

Roof slope and overall structure
Sagging or uneven areas
Chimney condition and caps
Vent pipes and boot seals
Skylights and proper installation
Satellite dishes and antennas
Solar panel mounting (if present)
Roof access and penetrations

Common Roof Issues in Minnesota

Ice Dam Damage

Minnesota winters cause ice dams that lift shingles and allow water infiltration. We check for damage patterns, proper attic insulation, and ventilation to prevent future ice dams.

Wind & Hail Damage

Severe storms cause shingle loss, bruising, and granule displacement. We document all storm damage for insurance claims and identify compromised areas.

Aged Shingles

Minnesota's extreme temperature swings accelerate shingle aging. We assess remaining lifespan, brittleness, curling, and whether replacement is imminent.

Improper Ventilation

Inadequate ventilation causes premature shingle failure, ice dams, and attic moisture. We evaluate ventilation balance and recommend improvements.

Flashing Failures

Rusted, missing, or improperly installed flashing allows water penetration at chimneys, valleys, and walls. We identify all flashing defects.

Gutter Problems

Clogged, sagging, or damaged gutters cause water to overflow onto fascia, soffits, and foundations. We assess all gutter and downspout issues.

🚩 Critical Red Flags We Look For

Active Roof Leaks: Water stains, wet insulation, or dripping in attic
Structural Damage: Sagging roof deck, broken rafters, or compromised trusses
Missing Shingles: Large bare areas exposing underlayment or decking
Failed Valleys: Cracked or separated valley flashing causing leaks
Chimney Deterioration: Leaning chimney, cracked crown, or missing cap
Inadequate Flashing: Missing or improperly installed flashing at critical areas
Severe Ice Dam Damage: Multiple shingle layers lifted or damaged from ice
End of Life: Widespread shingle failure requiring immediate replacement

Roof Maintenance Tips for Minnesota Homeowners

Clean Gutters Twice Yearly: Remove debris in spring and fall to ensure proper drainage
Trim Overhanging Branches: Prevent damage and reduce moss/algae growth
Inspect After Storms: Check for missing shingles or damage after severe weather
Remove Snow Buildup: Use a roof rake to prevent ice dams on steep sections
Check Flashing Annually: Inspect chimney and valley flashing for rust or separation
Replace Damaged Shingles Promptly: Small repairs prevent larger problems
Ensure Proper Ventilation: Keep soffit vents clear and ridge vents unobstructed
Schedule Professional Inspections: Have your roof inspected every 3-5 years

Frequently Asked Questions

How long does a roof inspection take?

A thorough roof inspection typically takes 45-90 minutes depending on roof size, complexity, accessibility, and weather conditions. We inspect from the roof surface when safe, and from the ground with binoculars when necessary.

Will you walk on my roof?

We walk on roofs when it's safe to do so (proper slope, dry conditions, adequate shingle strength). For steep roofs, fragile materials, or unsafe conditions, we inspect from ladders, drones, or ground level with high-powered binoculars.

How long do asphalt shingle roofs last in Minnesota?

In Minnesota's harsh climate, standard 3-tab shingles last 15-20 years, while architectural shingles last 20-30 years. Factors like ventilation, maintenance, sun exposure, and storm damage significantly affect lifespan.

Can you identify hail damage for insurance claims?

Yes, we document hail damage including bruising, granule loss, and cracked shingles. We provide detailed reports with photos that can support insurance claims, though the insurance company makes final damage determinations.

What causes ice dams and how can they be prevented?

Ice dams form when heat escapes into the attic, melting snow that refreezes at cold eaves. Prevention requires proper attic insulation (R-49+), adequate ventilation, and air sealing. We identify conditions that contribute to ice dam formation.

Serving Winthrop & Surrounding Communities

Winthrop, MN

Gaylord, MN

Lafayette, MN

New Ulm, MN

Gibbon, MN

Fairfax, MN

Sleepy Eye, MN

Springfield, MN

Glencoe, MN

Hutchinson, MN

Arlington, MN

Green Isle, MN

Brownton, MN

Stewart, MN

Bird Island, MN

Schedule Your Professional Roof Inspection Today

InterNACHI-certified inspector serving Winthrop and surrounding areas

Call (507) 721-0818 Get Instant Quote

🏠 Roof Inspection - What We Check