Understanding Building Permit Requirements for Insulation in Michigan
building permit for insulation | FAQ | existing home insulation


Let's be honest -- navigating building permit requirements can feel like a hassle, especially when you're just trying to make your home more comfortable and energy-efficient.
Most homeowners know that major renovations -- like building an addition or remodeling a kitchen -- typically require a building permit. But what about adding insulation? Does the Michigan Building Code have specific insulation requirements? And is a building permit required for foam insulation?
At RetroFoam of Michigan, we handle permits in two ways. If we're working with a general contractor on a new construction project, they pull the necessary permits. If we're insulating an existing home for a homeowner, we take care of securing the permit if one is required.
So, do you need a building permit to re-insulate your home? The answer depends on several factors. Let's break it down by looking at Michigan building permit requirements.
Do You Need a Building Permit for Insulation in Michigan?
The Michigan Building Code provides general guidance on building permits but doesn't always get into specifics.
Here's what the Michigan Department of Licensing and Regulatory Affairs (LARA) has to say:
"A permit is not required for ordinary repairs. Ordinary repairs to structures may be made without permit, but such repairs shall not include the cutting away of any wall, partition or portion thereof, the removal or cutting of any structural beam or bearing support, or the removal or change of any required means of egress, or rearrangement of parts of a structure affecting the exit requirements; nor shall ordinary repairs include addition to, alteration of, replacement or relocation of any standpipe, water supply, sewer, drainage, drain leader, gas soil, waste, vent or similar piping, electric wiring or mechanical or other work affecting public health or general safety."
In simple terms, the need for a building permit depends on the scope of your insulation project. While re-insulating walls, attics, or crawl spaces is generally considered an "ordinary repair," there are exceptions. That's why it's always best to check with your local building authority before starting any home improvement project.
Michigan Building Code Insulation Requirements
If you're building an addition to your home, you will need a building permit, and you must ensure that the insulation meets Michigan building code insulation requirements.
For remodels -- such as updating a kitchen, bathroom, or family room -- you may also need a building permit, and any insulation installed in that area must comply with the insulation code that was in effect when the home was originally built.
Many homeowners use renovation projects as an opportunity to upgrade to foam insulation to improve comfort and energy efficiency. However, knowing whether a building permit is required for insulation can help you avoid any surprises.
Is a Building Permit Required for Foam Insulation?
In most cases, cities and townships in Michigan do not require a building permit for re-insulating your home.
However, there are some exceptions where certain municipalities do require a permit for insulation upgrades.
A reputable home insulation contractor should be familiar with local building permit requirements for insulation and should handle the application process on your behalf if necessary.
Before moving forward with your insulation project, it's always a good idea to check with your local township, city, or county to confirm what's required. Understanding the paperwork and any potential costs ahead of time can save you headaches down the road.
At the end of the day, ensuring your project meets legal requirements is the best way to upgrade your home with peace of mind.
Key Points:
- Building permits are required for major renovations like additions or structural changes but may not be needed for re-insulating existing walls, attics, or crawl spaces.
- The Michigan Building Code states that ordinary repairs don't require permits, but some municipalities have exceptions.
- If you're building an addition or remodeling a significant area, insulation must meet Michigan building code insulation requirements.
- Most Michigan cities and townships do not require a permit for insulation upgrades, but some exceptions exist.
- Always check with your local building authority to confirm permit requirements before starting an insulation project.
- A reputable insulation contractor should handle permits if necessary, saving you time and ensuring compliance.
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6 Tips to Get on the Same Page with Your Building Code Inspector During New Home Construction
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