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Roof Replacement

Roof Replacement in Watertown, WI

Full tear-off, new underlayment, new shingles, and a written price that does not move once the job starts. Built to the Wisconsin code, quoted here so you can check.

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The Job

What A Roof Replacement In Watertown Involves

A roof replacement in Watertown is a full tear-off to the decking, soft sheathing replaced at a per-sheet price fixed in advance, ice barrier at every eave, synthetic underlayment, new flashing and boots, architectural shingles on the manufacturer’s six-nail pattern, and balanced ventilation. Most houses here take one day.

Every one of those items is a section of the Wisconsin code, quoted below so a quote can be held against it — and the one that is not in the code, decking priced before the roof is open, is the one that keeps the written price the price.

Why Now

Most Watertown Roofs Are On Their Second Or Third Cover

The median house in Watertown was built in 1969. Asphalt shingles last twenty to twenty-five years here — less on a south-facing slope with poor attic ventilation — so most homes in town are due, overdue, or already patched more than once.

A replacement is the point at which patching stops being economical. If we are pricing a fourth repair on the same slope, we will tell you that you are paying for a roof in installments. And if the roof is under fifteen and the damage is local, we will tell you that too — the repair page is where that conversation lives.

Scope

What A Replacement Actually Includes

Full tear-off

Everything comes off, down to the wood. We do not lay new shingles over old ones: it hides rot and adds a layer of heat the new shingles have to live through. And past two layers it is not a choice — SPS 321.28(6) prohibits a new covering over a roof that already carries two applications, or one that is water-soaked or deteriorated.

Decking replaced where needed

Once the roof is open we can see the sheathing. Soft or delaminated sheets get replaced. We tell you the per-sheet price before we start, so a surprise underneath is not a surprise on the invoice.

Ice barrier at the eaves

SPS 321.28(4) requires an ASTM D1970 membrane on roofs of 4:12 or less, at least 30 inches up the slope and 12 inches past the inner face of the wall. Above 4:12 the code does not require it. We fit it anyway, because Wisconsin eaves ice up whatever the pitch.

Underlayment

Synthetic over the field of the roof in place of felt: it does not tear in wind while the job is open and it does not wrinkle when wet. SPS 321.28(2) sets the floor at No. 15 felt or an equivalent tested to ASTM D226 or D4869.

New flashing and boots

Step flashing at the walls, new pipe boots, new valley metal — SPS 321.28(7) sets open valleys at No. 28 gauge and 16 inches wide, and requires a cricket on any chimney over 30 inches across on its upper side. Reused flashing is the most common cause of a leak on a brand new roof.

Balanced ventilation

Ridge vent and clear soffit intake. SPS 322.39(2) sets the net free ventilating area against the ceiling area and requires that insulation not block the free flow of air — which is exactly what blown-in insulation does at the eaves. Without intake, a ridge vent only looks right from the street.

How We Work

Tear-Off Versus Layover: Why We Do Not Lay Over

A layover — new shingles nailed over the old ones — is faster and cheaper, and we do not do it. You cannot inspect the decking through a layer of old shingles, the nails have to be longer to reach solid wood so they hold worse, and the new shingles live on top of a layer of heat that shortens them.

It also caps what you can do later. A second layer means the next roofer is tearing off two, and charging you for both. On a roof that already has two layers, or one that is soft underfoot, the question is closed: the state code prohibits a third covering.

During tear-off, Watertown WI

Materials

What Shingles We Install, And What The Warranty Actually Covers

Architectural asphalt shingles for almost every house here. They are thicker than three-tab, carry the manufacturer’s higher wind rating when installed to its instructions, and they look right on this housing stock. We are a certified Owens Corning contractor, which means your shingles qualify for the extended manufacturer coverage that program allows, and the exact line and color go in the written estimate rather than being decided on the day.

Two warranties come with a roof and they cover different things. The manufacturer’s covers a defect in the shingle, which is rare. Ours — a 5-year workmanship warranty — covers the installation, which is where nearly every leak on a young roof actually comes from. The warranty page sets out both, with the exclusions written down.

Metal is an option on some houses. The same report that benchmarks asphalt puts a standing-seam metal replacement in this region at $47,473, and SPS 321.28(5) makes the manufacturer’s instructions the standard for any covering the code does not address by name.

During tear-off, Watertown WI

Real Figures

What A Roof Replacement Costs In Watertown

The independent benchmark is the 2025 Cost vs. Value Report: a 30-square asphalt replacement in this region at $29,253, which works out to roughly $975 a square. That report prices a large hip roof with two skylights; most houses in Watertown are smaller, and a smaller, simpler roof costs more per square, not less, because set-up and disposal minimums do not shrink with it.

The cost guide has the figure’s source, the Madison and Milwaukee numbers, what it works out at per square, and the six things that move the number on your house. We price off a measurement and an inspection, and the number we give you is the number you pay unless you ask for a change.

Compare Like With Like

Why Two Quotes For The Same House Differ

Roof area, not floor area

A roof is measured on the slope. A 6:12 pitch has about 12% more surface than the footprint below it; a 12:12 has 41% more. Two estimators who measured differently are pricing different roofs.

Layers coming off

Each existing layer is labor and disposal weight. The estimate should say how many it assumes, and what a second one costs if it is found.

The code items

Ice barrier, valley metal, drip edge, a chimney cricket where SPS 321.28(7) requires one. A cheaper quote has often left one out. Ask each quote to price them by name.

Decking

Priced per sheet in advance, or discovered on the job as an open-ended extra. Only one of those is a fixed price.

The permit

The City of Watertown does not require one for a re-roof; Madison, Sun Prairie and Fort Atkinson do. The permit guide has every town we work in.

Who is doing the work

A quote from a sales office that brokers the labor is pricing a margin on top of a crew it has not met. Ask who will be on the roof.

Recent Work

Recent Roof Replacements

Before — Watertown WI
01Before
After — Watertown WI
02After · Watertown WI
During tear-off, Watertown WI
03During · tear-off
Completed replacement, Watertown WI
04Completed · Watertown WI

Straight Answers

Roof Replacement Questions

Most Watertown houses are one day. Two if the roof is large, steep, cut up with valleys and dormers, or if the decking needs significant replacement. You get a start date, not a two-week window, and if weather moves it we tell you the day before rather than the morning of. The FAQ covers what the day itself is like for the household.

The independent benchmark is $29,253 for a 30-square asphalt replacement in this region — about $975 a square — and most houses here are smaller and cost more per square rather than less. Your figure moves on roof area measured on the plane rather than the footprint, pitch, layers coming off, how cut up it is, decking, and materials. The cost guide has the source, the Madison and Milwaukee figures and the arithmetic.

Architectural asphalt shingles for almost every house here — they carry better wind ratings than three-tab when installed to the manufacturer’s instructions, and they look right on the housing stock. As a certified Owens Corning contractor we can register the extended manufacturer coverage on the materials. The exact brand, line and color go in your written estimate, as ATCP 110.05 requires of a home improvement contract in Wisconsin.

If the roof failed because of a storm, often yes. If it failed because it is twenty-five years old, no — that is wear, and no policy covers wear. We inspect first and tell you which one you have. If it is a claim, the insurance section explains the sequence, and the ACV versus RCV page explains why two neighbors with the same roof can get very different checks.

No. Plenty of our replacements happen while the owner is at work. We will need access to the driveway and to a power outlet, and we will call you if we find anything under the shingles that changes the plan — which, because decking is priced per sheet in advance, changes the schedule more often than it changes the price.

The code minimum under SPS 321.28(3)(a) is four fasteners per strip shingle, a two-inch head lap and corrosion-resistant fasteners, unless the manufacturer specifies otherwise. Most architectural shingles specify six nails for their high-wind rating, and because the code adopts the manufacturer’s instructions, six is the number on our roofs. It is also the difference between a shingle that is warranted in an 80 mph gust and one that is not.

Related

More Roofing Services

All roofing services

Replacement, repair, storm work, inspections, ice dams and ventilation, and how they fit together.

Roofing services

The questions we get asked

Cost, timing, permits, insurance and warranties, answered plainly on one page.

Roofing FAQ

Storm damage repair

If a storm is the reason you are reading this, the claim sequence and Watertown’s own storm record.

Storm damage

Attic ventilation

The single biggest reason a new roof does not last as long as the one before it. Worth reading before the tear-off.

Ventilation

What Your Neighbors Say

Reviews From Watertown-Area Homeowners

“Hail came through in June and I had no idea whether it was worth calling my insurance. They came out the next morning, walked the roof, and showed me photos of the bruising before I signed anything. The adjuster met them here and the claim went through without a fight.”

Sample Reviewer 1 Google Review · July 2026

“Full tear-off on a house built in 1961, so there were surprises under the old shingles. They called me before doing anything extra and the final invoice matched the estimate. Yard was cleaner when they left than when they showed up.”

Sample Reviewer 2 Google Review · June 2026

“Wind took part of the ridge off and I had water coming into an upstairs bedroom. They tarped it the same evening and came back to do the repair properly the following week. Straight answers the whole way through.”

Sample Reviewer 3 BBB Review · April 2026

Free Estimate

Ready To Price A Roof Replacement?

Free inspection, every slope walked, and a fixed written price with the decking priced per sheet before the roof is open.

Call (920) 285-0877 Request an Inspection