Michigan New Roofing Code Takes Effect Today — What Every Farmington Hills Homeowner Needs to Know

Michigan updated roofing building codes officially went into effect today April 13 2026 and every Farmington Hills homeowner buyer and seller needs to understand how these new standards affect their home and their real estate transactions this spring.

These are not minor adjustments. The new International Building Code requirements bring significant structural insulation and waterproofing changes that apply to every roof replacement and major roof repair across the state of Michigan starting today.

What Changed Today — The Six Key Requirements

The first major change is mandatory ice and water shield protection. Every roof installation must now include ice and water shield extending at least 24 inches inside the exterior wall line. This requirement is specifically designed to protect Michigan homes from ice dam damage which has been a significant issue across Oakland County during our harsh winters.

The second change involves new flashing standards. Corrosion resistant flashing is now required at all roof and wall intersections with valley flashing measuring a minimum of 24 inches wide. These standards address one of the most common sources of water intrusion and structural damage in Michigan homes.

The third change is the new attic ventilation requirement. All roof installations must now meet a 1 to 150 ventilation ratio ensuring proper airflow that protects both the roof structure and the home's overall energy efficiency.

The fourth change is the new insulation minimum. Michigan Climate Zones 5 and 6 which include Farmington Hills and all of Oakland County now require a minimum R-49 insulation rating for low slope roofs. This is a significant upgrade from previous standards and reflects Michigan's commitment to energy efficiency in residential construction.

The fifth and perhaps most impactful change for existing homeowners is the strip to deck rule. Any home with two or more existing roof layers must now be completely stripped to the deck before any replacement work begins. This eliminates the common practice of layering new shingles over old ones and ensures that all new roof work is installed on a clean structurally sound base.

What This Means for Farmington Hills Home Sellers

If you are planning to sell your Farmington Hills home this spring these new standards deserve your immediate attention. Any roof work completed before listing must meet the new 2026 code requirements or it will be flagged during the buyer's home inspection. Sellers with older roofs or roofs that have had recent work completed before April 13 2026 should consult with a licensed Michigan roofing contractor to assess compliance before going to market.

A failed roof inspection in today's Oakland County market can delay your closing create costly repair negotiations and in some cases cause buyers to walk away entirely. Getting ahead of these new requirements before listing is one of the smartest moves any Farmington Hills seller can make this spring.

What This Means for Farmington Hills Home Buyers

Buyers searching for homes in Farmington Hills Novi Northville West Bloomfield and Bloomfield Hills this spring should verify that any recent roof work on a home under consideration was completed to the new 2026 code standards. Ask your Realtor to confirm compliance documentation from the seller before you proceed past the inspection contingency.

The good news for buyers is that the new standards represent a genuine upgrade in home protection. A home with a roof that meets the 2026 Michigan building code is better protected against ice damage water intrusion and energy loss than homes with roofs built to older standards.

What This Means for Insurance Claims

One of the most important and often overlooked implications of the new roofing code involves insurance claims. Homeowners who file roofing insurance claims after storm damage may find that repairs completed before April 13 2026 do not meet the new standards required for claim approval. If you have experienced recent roof damage or are planning to file a claim consult with your insurance provider about how the new 2026 requirements affect your coverage and your claim timeline.

Working With a Local Expert

After 24 years helping buyers and sellers navigate the Farmington Hills and Oakland County real estate market I have seen how quickly building code changes can create unexpected complications in transactions that should have been straightforward. The homeowners and real estate professionals who stay ahead of changes like these protect themselves and their clients from costly delays and disputes.

If you have questions about how the new Michigan roofing building codes affect your Farmington Hills home value your upcoming listing or your home purchase this spring I am always available to help with honest local guidance you can trust.

Tom Gilliam RE/MAX Classic 📲 248-790-5594 🌐 Homes2MoveYou.com 📍 29630 Orchard Lake Rd Farmington Hills MI 48334