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8 Roofing Codes Every Ohio Homeowner Should Know
By S&K Construction and Remodeling LLC
When investing in a new roof in Northeast Ohio, you expect it to be installed correctly and up to code. Following the Ohio Residential Code (ORC / OAC) is not optional — it’s the law. Unfortunately, some contractors cut corners, which can lead to failed inspections, leaks, voided warranties, and shortened roof lifespans.
At S&K Construction and Remodeling LLC, we believe in doing things the right way. That’s why we want to share 8 important Ohio roofing codes you need to know before starting your roof replacement.
1. Crickets and Saddles — OAC 4101:8-9-01 (R903.2.2)
A roof cricket (or saddle) is built behind a wide chimney to divert water properly. Ohio code requires a cricket or saddle on the ridge side of any chimney or roof penetration 30 inches wide or more. The covering must be either sheet metal or the same material as the roof.
✅ This ensures water doesn’t pool behind the chimney and cause roof leaks.
2. Roof Covering Application — OAC 4101:8-9-01 (R905.1)
All roofing materials must be installed according to manufacturer instructions and Ohio code. If a contractor ignores these, your roof won’t pass inspection if not properly installed, and your manufacturer’s warranty will be voided.
✅ At S&K Construction, as an Owens Corning Preferred Contractor, we strictly follow installation requirements.This code means your local roofing contractor must follow all the installation instructions provided by the shingle manufacturer. Not only is this a building code, but it also determines if your material warranty will be honored.
3. Roof Sheathing Requirements — OAC 4101:8-9-01 (R905.2.1)
Shingles must be installed over solid sheathing (roof decking). Rotten, weak, or damaged decking must be replaced.
✅ Some contractors skip this to save money — but if your decking can’t support your roof, your entire system is at risk.
4. Minimum Roof Slope for Shingles — OAC 4101:8-9-01 (R905.2.2)
Asphalt shingles can only be used on roof slopes of 2:12 or greater. If your slope is between 2:12 and 4:12, double underlayment is required.
✅ Roofs flatter than 2:12 are considered low slope and must use alternative systems (like membrane or metal roofing).
5. Ice Barrier Protection — OAC 4101:8-9-01 (R905.2.7.1)
In areas prone to ice dams (very common in Northeast Ohio winters), code requires an ice barrier (Ice & Water Shield) at the eaves. It must extend at least 24 inches inside the exterior wall line.
✅ This prevents water from backing up under shingles during freeze/thaw cycles.
6. Roof Valleys — OAC 4101:8-9-01 (R905.2.8.2)
Valleys — where two roof slopes meet — must be lined with underlayment or approved materials before shingles are applied. Open valleys require metal or roll roofing, while closed valleys require ice & water shield or proper underlayment.
✅ Valleys are leak-prone; cutting corners here causes big problems.
7. Drip Edge Installation — OAC 4101:8-9-01 (R905.2.8.5)
A drip edge must be installed at eaves and gables. It should:
- Extend ¼ inch below roof decking
- Extend 2 inches up the roof
- Be overlapped at least 2 inches
- Have underlayment placed over the drip edge at eaves and under at gables
✅ This prevents water from rotting your fascia and decking.
8. Reinstallation of Roofing Materials — OAC 4101:8-9-01 (R908.5)
When replacing a roof, certain components (like vents or flashing) may be reused only if they are not damaged or corroded. If they are deteriorated, they must be replaced.
✅ This keeps your roof system watertight and ensures compliance with Ohio law.
Why Ohio Building Codes Matter
Ohio roofing codes aren’t just red tape. They:
- Protect your home from water damage
- Ensure your roof lasts its full lifespan
- Keep your warranty valid
- Ensure you pass inspections
At S&K Construction and Remodeling LLC, we follow every Ohio code requirement to the letter. That’s why homeowners in Youngstown, Cleveland, Medina, Lakewood, Twinsburg, and across Northeast Ohio trust us for roofing done right.
👉 Schedule a free roof inspection today to make sure your home is protected — and 100% up to Ohio code.
