Understand your roof before anyone quotes it.

The anatomy of a roof

A shingle roof is a system of layers, and the parts you can see from the street are the least of it. From the inside out: decking (the plywood the whole system is nailed to), ice and water shield (a self sealing membrane along the edges and valleys where water lingers), underlayment (a water shedding layer across the entire deck), and finally the shingles themselves. The edges get metal: drip edge keeps water off the fascia, and flashing seals every place the roof meets something that is not roof, like a chimney, a wall, or a pipe.

Ventilation is the part everyone forgets. A roof needs air entering at the eaves and leaving at the ridge. Without that flow, summer heat cooks shingles from below and winter moisture condenses in the attic. Many roofs that fail at fifteen years were built fine and ventilated poorly.

Terms worth knowing

• SquareThe unit roofing is measured in. One square is one hundred square feet of roof surface. A typical Columbus home runs twenty to thirty five squares.
• PitchHow steep the roof is, written as rise over run. A 6/12 roof rises six inches for every twelve inches of horizontal distance. Anything above 8/12 is steep enough to change how crews work and what the job costs.
• FacetOne flat plane of roof. A simple ranch might have two; a house with dormers and wings can have twenty or more.
• EaveThe lower horizontal edge, where gutters hang and ice dams form.
• RakeThe sloped edge at a gable end.
• RidgeThe horizontal line where two planes meet at the top.
• HipA sloped external corner where two planes meet.
• ValleyAn internal channel where two planes drain toward each other. Valleys carry more water than any other part of the roof and fail first when cut corners meet weather.
• Soffit and fasciaThe underside and face board of the roof overhang. Intake ventilation usually lives in the soffit.
• Tear off vs overlayA tear off removes everything down to the decking and starts clean. An overlay nails new shingles over old ones. An overlay is cheaper on day one and almost always costs more over the life of the house, because it hides the decking and traps heat.

Materials and lifespans

Most central Ohio homes wear asphalt shingles, and the real choice is between grades of asphalt and a step up to metal.

Whatever the material, three things shorten a roof more than age does: poor ventilation, fasteners in the wrong place, and flashing reused when it should have been replaced. All three are invisible from the driveway, which is why the installer matters more than the shingle brand.

Warning signs

None of these alone means a replacement. Together, or on a roof past its twentieth year, they mean it is time for a professional look. Never climb up yourself; everything on these lists is visible from the ground or the attic.

Repair or replace?

The honest rule: a roof with one problem gets repaired, and a roof that has started failing gets replaced. Age is the biggest factor. A ten year old roof with a lifted flashing is a repair. The same flashing on a roof past twenty, surrounded by brittle shingles that crack when a crew walks them, is money spent twice. Three more useful tests: whether damage is localized or scattered across planes, whether the decking underneath is sound, and whether matching shingles still exist for your roof. A professional should be able to explain which side of the line your roof falls on and why, in writing.

Storms and insurance

After hail or high wind, the process has a shape: document the date and damage with photos from the ground, get a tarp on anything actively leaking, call your insurer to open a claim, and have a roofer you chose meet the adjuster on site. You pay your deductible; the policy covers covered damage. Two cautions worth underlining. First, be wary of anyone who knocks on your door after a storm, asks you to sign anything on the spot, or offers to cover your deductible, which is illegal in Ohio. Second, you choose the contractor, not the insurance company. An assignment of benefits form handed over too early gives that choice away.

How estimates work

A real estimate is a document, not a number spoken on your doorstep. It should state the measured size of your roof, the exact materials by name, what happens to the old roof, how decking surprises are priced before anyone finds one, the warranty on both materials and workmanship, and a price that holds. If any of those are missing, you are not comparing bids, you are comparing guesses. We deliver ours the same day you book, fully specified, with a complete measurement report attached, so you can read it on your own time and check it line by line against anyone else’s.

Questions to ask any roofer

1. Are you licensed and insured, and will you send certificates without being chased?
2. Is this a full tear off, and if not, why not?
3. Who is actually on my roof: your crew, or a subcontractor I have never met?
4. What is the workmanship warranty, separate from the shingle manufacturer’s?
5. How are decking repairs priced if you find rot, and do I approve them first?
6. How will you protect landscaping, and what does cleanup include?
7. What does the written scope say about flashing: reused or replaced?
8. When do I pay, and how much is due before any material arrives?

A professional answers all eight without flinching. Hesitation on the warranty or the subcontractor question tells you more than any brochure will.

A simple maintenance calendar

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