Giertsen Company of Wisconsin

What They Do

Water DamageMoldFire and SmokeSewageStorm

• Fire damage cleanup & repair
• Flooring
• Painting
• Plumbing
• Remodeling
• Roofing
• Sewage cleanup
• Water damage-related cleanup & repair
• Water damage-related mold removal
• 24/7 Emergency Assistance
• Air Scrubbers
• Assisted Living
• Commercial Property
• Commercial Repair
• Construction & Renovations
• Contingency Planning
• Damage Clean-Up
• Disaster Response
• Disaster Restoration
• Disposal Of Damaged Items
• Emergency Response
• Exterior Services
• Facility Management
• Full Service Restoration
• Glass Replacement
• Improvement Projects
• Insurance Restoration
• Metal Roof

In Their Own Words

Giertsen Company is a trusted leader in restoration, reconstruction, and exterior services with over 106 years of experience. We provide 24/7/365 emergency response for fire, water, wind, storm damage, and the unexpected. Our skilled team works with residential, commercial, and multi-family properties to deliver fast, reliable, and high-quality results. In addition to emergency services, we offer expert exterior solutions including roofing, siding, windows, doors, decks, and balconies. At Giertsen, we’re committed to protecting your property, minimizing downtime, and getting you back to business—no matter what.

Written by the business on its public profile. We have not verified these claims.

Before You Call Giertsen Company of Wisconsin

1. Do you take moisture readings every day and will you give me the drying log?
2. Are your technicians certified in water damage restoration?
3. Where do you think the moisture is coming from, and who fixes it?
4. Will you set up containment and negative air, and how will you protect the rest of the home?
5. How will you deal with smoke odor inside wall cavities and the HVAC ducts?

Ask for a Wisconsin dwelling contractor credential and look it up with the Department of Safety and Professional Services. Also ask for proof of insurance and industry certification for the restoration crew.

How Their Reviews Break Down

Counts from public listings as of September 23, 2026. A handful of reviews says less than a few hundred.

Read This While You Wait

• DIY with careWhat to Do in the First 24 Hours After Water DamageAn hour by hour plan for the first day after water damage. Make it safe, stop the source, document, remove water and start drying before mold can start.
• DIY with careSafe DIY Mold Cleanup for Areas Under 10 Square FeetA step by step method to clean up mold under 10 square feet safely, with the gear to buy, what to throw away, why bleach is not the default, and when to stop.
• Call a proThe First 48 Hours After a House FireWhat to do in the first two days after a house fire. Safe re-entry, utilities, insurance calls, securing the home, food, medicine and what never to clean.
• Call a proSewage Backup Cleanup, What You Can and Cannot DoWhat to do when sewage backs up into your home. How to stay safe, what you can clean yourself, what must be thrown out, and when to call a specialist.