Blower door test in-progress at an historic municipal buidling

Accurate-Airtight Exteriors has been serving Wisconsin since 1998. Our team has over 75 years of combined experience in the building performance industry, and we’ve worked with hundreds of owners and buildings in the residential, multifamily and municipal sectors, including many large facilities. We know that every building owner is concerned with operating expenses; that is why we provide affordable solutions with some of the shortest paybacks.

Residential Projects

Working with homeowners to ensure energy efficiency by tightening up the building envelope helps to create more comfortable, healthy and cost-efficient homes for families. Focusing on air sealing and insulating, homeowners see benefits almost immediately in energy savings and comfort.  We are Home Performance contractors that are consultants first.

Municipal Projects

Having done comprehensive projects in municipal buildings, Accurate-Airtight Exteriors is a trusted name in the souther and central Wisconsin region. We also enoy donating time and resources to projects that would not otherwise happen to help support the local community.  If you have an event that you would like us to speak at, please give us a call.

Large Building Projects

Large buildings can require extensive resources to operate energy efficiently. The Accurate-Airtight Exteriors team guarantees full attention to every detail to ensure even the biggest project is done right the first time.

Multifamily Projects

Multifamily residential buildings provide shelter for many families. By helping make these buildings more energy efficient, owners can reduce operating expenses and reduce maintenance costs. We have worked with multiple condominiums.  Condominium properties, with multiple families, can start saving money and energy while living in more healthy, comfortable residences.


Locations We Serve:


Appleton, Berlin, Beaver Dam, Columbus, Fond du Lac, Green Bay, Green Lake, Madison, Oshkosh, Princeton, Ripon, Stevens Point, Watertown, Waunakee, Waupaca, Waukesha    

Commercial Air Barrier Repair:

All of Wisconsin, Minnesota, Illinois, Iowa, Michigan  

Common cities: Chicago, Dubuque, Madison, Minneapolis, Milwaukee

Air Barrier Testing-Thermography-Consulting:

Midwest States, most locations East of the Rockies with management approval



Air Barrier Repair - Air Barrier Testing - Air Barrier Consulting- Building Envelope Commissioning

Home Performance Energy Audits - Insulation - Air Sealing

ASHRAE Level Energy Audits



Indoor Air Quality

Contact us or call (866) 582-4320 today to learn more about our work and see how we can develop a project for your building!

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Wallace completed the job (air sealing) at my house. Very Professional and I'm happy with the results. Best wishes to all at the business.

Larry H., Appleton, WI