Permitting Authorities / Township of Marengo - Building Permits (South Central Michigan Construction Code Inspections)
Do you need a permit to replace a roof in Township of Marengo, MI?
Adopted code
Township of Marengo - Building Permits (South Central Michigan Construction Code Inspections)
Yes, a permit is required to replace a roof in Township of Marengo, MI, issued by Township of Marengo - Building Permits (South Central Michigan Construction Code Inspections). SCMCCI's Municipalities page, headed "Municipalities Inspected by SCMCCI", lists Marengo Township under Calhoun County, and SCMCCI's building permit checklist (dated 6/4/2026) names it in its list of "Areas serviced by SCMCCI". Marengo Township's Building permits page says "You must call SCMCCI before starting a project!", and its Applications page says building, electrical, mechanical and plumbing fees are paid to SCMCCI; the township's own fees there are zoning and land split fees. SCMCCI's office is at 113 South Capital Avenue, P.O. Box 509, Athens, MI 49011, phone 269-729-5355 or 888-249-7077, inspections 877-223-2292, open "7:30am to 12:00pm and 1:00pm to 4:00pm M-F". Its FAQ says "Inspections can be scheduled by calling the SCMCCI office at 877-223-2292, 7 days a week, 24 hours a day" and that the call should be made "the day before the inspection is desired." The FAQ says the permit is pulled by "The person doing the work", and SCMCCI's contractor registration form, at a fee of $15.00 per license per term, asks a contractor to return it "WITH A COPY OF THE REQUIRED LICENSE(S), DRIVERS LICENSE, LIABILITY INSURANCE CERTIFICATE (in the name of SCMCCI), AND THE APPROPRIATE FEE." SCMCCI's Residential Building Permit Application has no roofing project type, and its fee lines are plan review fees for floor area, pools and buildings; SCMCCI's FAQ accepts checks or cash, and its applications page accepts debit and credit payments with its authorization form.
Roof code checklist: Township of Marengo, MI
Each row comes from the sourced record on this page; full wording is in the table below. "Not published" means no official source for that item was found when the record was last verified.
Jurisdiction
Township of Marengo, Michigan
Address
113 South Capital Avenue, Athens, MI 49011
Contact
- url: https://www.scmcci.org/contact.shtml
- phone: 269-729-5355
Roofing permit required
Required
Contractor registration required
Required
Permit process note
SCMCCI's Municipalities page, headed "Municipalities Inspected by SCMCCI", lists Marengo Township under Calhoun County, and SCMCCI's building permit checklist (dated 6/4/2026) names it in its list of "Areas serviced by SCMCCI". Marengo Township's Building permits page says "You must call SCMCCI before starting a project!", and its Applications page says building, electrical, mechanical and plumbing fees are paid to SCMCCI; the township's own fees there are zoning and land split fees. SCMCCI's office is at 113 South Capital Avenue, P.O. Box 509, Athens, MI 49011, phone 269-729-5355 or 888-249-7077, inspections 877-223-2292, open "7:30am to 12:00pm and 1:00pm to 4:00pm M-F". Its FAQ says "Inspections can be scheduled by calling the SCMCCI office at 877-223-2292, 7 days a week, 24 hours a day" and that the call should be made "the day before the inspection is desired." The FAQ says the permit is pulled by "The person doing the work", and SCMCCI's contractor registration form, at a fee of $15.00 per license per term, asks a contractor to return it "WITH A COPY OF THE REQUIRED LICENSE(S), DRIVERS LICENSE, LIABILITY INSURANCE CERTIFICATE (in the name of SCMCCI), AND THE APPROPRIATE FEE." SCMCCI's Residential Building Permit Application has no roofing project type, and its fee lines are plan review fees for floor area, pools and buildings; SCMCCI's FAQ accepts checks or cash, and its applications page accepts debit and credit payments with its authorization form.
Adopted code
2015 Michigan Residential Code. This is state law and it is the same in every Michigan city, village, township and county: the state construction code act says "This act and the code apply throughout the state," and the Michigan Residential Code rule adopts "the international residential code, 2015 edition" with the state amendments in R 408.30500 to R 408.30547g. A 2021 edition was filed with the secretary of state in 2025 but has not taken effect. On July 7, 2025 the Michigan Court of Claims entered a stipulated order in Home Builders Assoc et al. v LARA et al., and the Michigan Department of Licensing and Regulatory Affairs (LARA) says that while that order remains in place "the 2015 versions of the IRC and residential provisions of the IECC standards currently adopted, in part, by each rule set will remain valid and in effect." LARA's Statewide Jurisdiction List names the Township of Marengo as its own building code enforcer, and its building permits are handled by SCMCCI, whose interlocal agreement says "Each participating unit of government shall be responsible for adopting and up-dating its own construction codes." Neither the township's Building permits and Applications pages nor SCMCCI's pages name a residential code edition; this record states the 2015 Michigan Residential Code for the reasons above.
Drip edge
Required — Required on asphalt shingle roofs by state law. Michigan makes no amendment to the drip edge rule of the 2015 International Residential Code, Section R905.2.8.5, which applies as published: "A drip edge shall be provided at eaves and rake edges of shingle roofs." Segments overlap by at least 2 inches, the drip edge extends at least 1/4 inch below the roof sheathing and at least 2 inches back onto the deck, it is fastened at no more than 12 inches on center, and underlayment goes over it at the eaves and under it at the rakes. A reroof is held to the same rule, because "Materials and methods of application used for re-covering or replacing an existing roof covering shall comply with the requirements of Chapter 9" (R908.1). SCMCCI's FAQ, applications and checklist and the township's Building permits and Applications pages were read for a local rule and state nothing further on drip edge.
About drip edgeIce & water shield
Required — Required everywhere in Michigan by state law. Michigan fills in the climatic design table of the 2015 code once for the whole state (Rule 516, Table R301.2(1)), and its ice barrier underlayment column reads Yes. The state footnote calls for Yes "for areas where the average daily temperature in January is 25 degrees Fahrenheit" or less, or where ice damming has caused damage. The base code then requires an ice barrier "for asphalt shingles, metal roof shingles, mineral-surfaced roll roofing, slate and slate-type shingles, wood shingles and wood shakes," running "from the lowest edges of all roof surfaces to a point not less than 24 inches (610 mm) inside the exterior wall line of the building" (R905.1.2). Detached accessory structures without conditioned floor area are exempt. On a tear-off, an existing ice barrier that is adhered to the deck may stay and be covered with an additional layer (R908.3, Exception). SCMCCI's FAQ, applications and checklist and the township's Building permits and Applications pages were read for a local rule and state nothing further on ice barrier.
About ice & water barrierImpact-resistant roofing
Not required — No impact-resistance requirement under state law. The 2015 Michigan Residential Code was searched in full and has no hail or impact rating rule for roof coverings: the words hail, impact and UL 2218 do not appear in it, and none of them appears in the roof assemblies chapter of the base 2015 International Residential Code either. Michigan applies one code statewide ("This act and the code apply throughout the state."), and the act gives the power to amend it to the state director, who adopts the model codes "with amendments, additions, or deletions as the director determines appropriate." SCMCCI's FAQ, applications and checklist and the township's Building permits and Applications pages were read for a local rule and state nothing further on impact resistance.
Repair permit threshold
No size or cost threshold is published for roof work. SCMCCI's FAQ answers the question of which projects need a permit with "Any construction other than routine maintenance and repairs requires a permit." It does not name roofing or reroofing and does not define routine maintenance or repairs, and SCMCCI's Residential Building Permit Application (project types such as stick built home, addition, alteration/remodel, garage, pole building, deck or porch, pool and demolition), its plan review fee lines and its building permit checklist name no roof work either way. SCMCCI has published nothing applying that relief to roof work, so the general permit rule applies to a reroof. Under state law, "A building permit is not required for ordinary repairs of a building or structure." (MCL 125.1510), without a definition of ordinary repairs. Ask SCMCCI (269-729-5355 or 888-249-7077) before starting a roof job.
Roof layer limit / recover
Two layers at most, under state law. Michigan builds one- and two-family homes to the 2015 Michigan Residential Code, which adopts the 2015 International Residential Code and makes no amendment to its reroofing section, Section R908; the Michigan rule set was searched in full and R908 does not appear in it. The base section therefore applies as the International Code Council publishes it. Section R908.3.1.1 lists the conditions under which a new roof may not be laid over an existing one, and the third is "Where the existing roof has two or more applications of any type of roof covering." One existing layer may be covered once; a roof that already carries two layers is torn off to the deck. The same section also bars covering a roof that is water soaked or too deteriorated to serve as a base, and covering "slate, clay, cement or asbestos-cement tile." The township's Ordinances page lists a zoning ordinance, a blight ordinance and cemetery and marihuana ordinances and no building ordinance, and the zoning ordinance was not read for a roofing rule, so this record sets no layer classification. SCMCCI's FAQ, applications and checklist state no local layer rule.
Deck & sheathing requirements
State law, from the base code. Michigan makes no amendment to the roof sheathing section of the 2015 International Residential Code, Section R803, which does not appear in the Michigan rule set, so it applies as published. Lumber roof sheathing follows Table R803.1: over rafters or beams 24 inches apart it must be at least 5/8 inch net thick. Wood structural panels must be identified "for grade, bond classification and performance category by a grade mark or certificate of inspection issued by an approved agency," and their spans may not exceed "the values set forth in Table R503.2.1.1(1), or APA E30." For a shingle roof the base code adds that "Asphalt shingles shall be fastened to solidly sheathed decks" (R905.2.1), and on any reroof "The structural roof components shall be capable of supporting the roof covering system" (R908.2). SCMCCI's FAQ, applications and checklist and the township's Building permits and Applications pages were read for a local rule and state nothing further on roof sheathing.
Sales & use tax
6%, statewide, with no local add-on. This is state law: the General Sales Tax Act sets the tax "equal to 6% of the gross proceeds of the business," the Use Tax Act sets "a total combined rate equal to 6%," and the Michigan Department of Treasury says "Michigan does not allow city or local units to impose sales tax." On a roofing job the roofer is the taxpayer on materials, because the Use Tax Act counts as a consumer "A person acquiring tangible personal property if engaged in the business of constructing, altering, repairing, or improving the real estate of others." Nothing on the township's Building permits and Applications pages or SCMCCI's pages changes this.
Local roofing hub
More roof permit pages in Michigan
Related guides
Township of Marengo in Calhoun County has its building permits and inspections handled by South Central Michigan Construction Code Inspections (SCMCCI), a code inspection body formed by member townships, cities and villages, whose office is at 113 South Capital Avenue in Athens and which lists Marengo Township among the municipalities it inspects. The State of Michigan's jurisdiction list names the Township of Marengo as its own building code enforcer. Michigan's single state construction code applies, and for houses that is the 2015 Michigan Residential Code.
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