Janesville Premium Roofing Blog

Real answers on roofing in Janesville and south central Wisconsin — what things cost, how to choose, and the mistakes worth avoiding.

Looking for help rather than reading? Go to the Janesville services we handle, the team behind Janesville Premium Roofing, or straight to the Janesville Premium Roofing homepage for a free estimate.

Shingle roof on a house in Janesville, WI, where a leak claim turns on whether the roof was broken or simply worn out

Will Home Insurance Cover a Roof Leak in Janesville?

The leak is not what gets decided. The cause is. What a standard policy actually says about a worn roof versus a broken one in Janesville, WI, quoted from the form.

Roof overhang, soffit and fascia on a house in Janesville, WI

What Is a Soffit? The Board Under Your Janesville Eaves

Soffit is the underside of the overhang, fascia is the board on its edge. Why vented soffit is the intake half of a Janesville, WI attic, and how both boards fail.

Roof edge, fascia and downspout on a house in Janesville, WI, where drip edge carries runoff into the gutter

What Is a Drip Edge? The Metal That Saves Your Janesville Fascia

Drip edge is the bent metal at the eaves and rakes that keeps runoff off your fascia. The profiles, the two details that decide whether it works, and the code in Janesville, WI.

Asphalt shingle roof on a two-story home in Janesville, WI

Types of Roof Shingle in Janesville: What a House Can Actually Take

Asphalt, cedar, slate, tile, metal and molded synthetic all get laid as shingles. What each one is, what it weighs, and the one thing that decides whether it belongs on a roof in Janesville, WI.

Roof ridge line and chimney on a home in Janesville, WI

Types of Roof Vent in Janesville: Start With Intake

Ridge, box, gable, turbine, powered — what each type of roof vent does in Janesville, WI, why intake is usually the missing half, and the two mixes that make it worse.

Daylight coming down a finished skylight shaft into a room in Janesville, WI

Skylight Costs With Installation in Janesville: What Actually Moves It

The skylight is the small half of a skylight bill. What decides the number in Janesville, WI - a new hole or an in-kind swap, curb or deck mount, and who finishes the inside.

Low-slope roof edge on a building in Janesville, WI — the substrate where roof coatings genuinely belong

Shingles Roof Coating: What It Does to an Asphalt Roof in Janesville

Coating asphalt shingles is sold everywhere and advised against by the people who make the shingles. What a coating does to a lapped roof, to your warranty, and to a future hail claim in Janesville, WI.

Steep roof eaves and gutter lines on houses in Janesville, WI

A Roof With an Ice Dam in Janesville: A Heat Problem, Not a Gutter Problem

What causes an ice dam, what one looks like from the driveway, why the water ends up on your Janesville, WI ceiling, and the fix order that works: air seal, insulate, ventilate.

Underlayment rolled and capped on a bare roof deck in Janesville, WI

Roof Underlayment Types in Janesville: Felt, Synthetic, Peel-and-Stick

Felt, synthetic and self-adhered underlayment compared for Janesville, WI roofs — what the ASTM numbers mean, which ones are real standards, and the laps and fasteners that decide whether any of it works.

Clay barrel tile rooflines on homes in Janesville, WI

Spanish Roof Tile in Janesville: A Shape, Not a Material

Spanish tile names a profile, and that profile comes in clay, concrete and molded polymer at wildly different weights. What that means for framing, freeze-thaw and re-roofing in Janesville, WI.

Roofer nailing the cap course along a ridge on a home in Janesville, WI

Roof Ridge Vent Installation Cost in Janesville: Timing Sets It

A ridge vent is close to free during a re-roof and a real job as a retrofit in Janesville, WI. The drivers, the ratios, and the line item most quotes leave out.

Moss growing on an aging asphalt shingle roof in Janesville, WI

Roof Moss Treatment in Janesville: Why the Fast Method Ends the Roof

Moss on asphalt shingles has one correct treatment and one destructive one that sells better. What ARMA and the shingle warranties actually say, and what it costs in Janesville, WI.

Hips and valleys across a run of rooflines in Janesville, WI, where two planes meet and hand their water to one line

Roof Hip and Valley in Janesville: Why Only One of Them Leaks

A hip sheds water away from itself. A valley concentrates it. What separates open, closed-cut and woven valleys in Janesville, WI, and why a dead valley is the detail that actually fails.

Bare rafters and panel decking on a house in Janesville, WI before the covering goes back on

Roof Decking Types in Janesville: Plywood, OSB, Boards and Span Ratings

Plywood, OSB, plank and spaced sheathing compared for Janesville, WI roofs — what the span rating stamp means, what sets minimum thickness, and how the decking change order should be priced.

Roof damaged by a windstorm in Janesville, WI

Roof Damage From a Storm in Janesville: How Wind Actually Breaks a Roof

Wind damage is a broken seal and a creased tab, not a dent, and a failed shingle can look perfect from the ground. How wind losses are read in Janesville, WI — and why the honest answer is often a repair.

Moss and dark algae staining on a shaded asphalt shingle roof in Janesville, WI

Moss on a Roof in Janesville: Three Organisms, Three Different Answers

Moss, black algae and lichen look like one problem and are not. What each one actually does to asphalt shingles, why it grows where it does, and when to act in Janesville, WI.

Neighborhood of roofs in Janesville, WI after a storm, where every household is running the same claim process

Insurance Claim for a Roof in Janesville: How the Process Actually Runs

Not whether you are covered — what happens after you call. The adjuster's scope, the depreciation you have to go back and collect, appraisal, and what a public adjuster costs in Janesville, WI.

Snow-covered roof edge and gutter line on a house in Janesville, WI

Ice Dam Removal in Janesville: One Method Works, Four Wreck the Roof

Steam takes an ice dam off a Janesville, WI roof without damaging it. Chisels, pressure washers, salt and flame do not. What to do while it is leaking, and what removal is worth paying.

Roofing crew installing underlayment on a stripped deck in Janesville, WI

How Long Does a Tile Roof Last in Janesville? Two Numbers, Not One

Tile outlives the membrane under it by decades, so a tile roof has two lifespans. What clay, concrete, the underlayment and cedar shake really last in Janesville, WI.

Tile roof gable in full sun, the kind of exposure that sets roof life in Janesville, WI

How Long Does a Roof Last in Florida? The Law, Not the Shingle

Florida's sun shortens a roof and Florida's rules decide when it stops being insurable. What s. 627.7011 really says, the 25 percent rule, the HVHZ, and how Texas differs.

Weathered exposed-fastener metal roof on an outbuilding near Janesville, WI

How Long Does a Metal Roof Last in Janesville? The Coating Decides

A metal roof's life is set by its coating and fasteners, not the metal. Plus real service life for slate, rubber, TPO and composite roofs in Janesville, WI.

Hail falling on a house in Janesville, WI where the policy wording decides the claim

Hail Damage to a Roof and Insurance in Janesville: What the Policy Already Decided

Hail is the peril carriers rewrote the policy around. Cosmetic exclusions, roof settlement schedules and percentage wind-hail deductibles decide a Janesville, WI claim before anyone climbs the ladder.

Hailstorm passing over houses in Janesville, WI

Hail Damage on a Roof in Janesville: What Is Real and What Only Looks Like It

Hail damage to a shingle is a fracture in the mat. Granule loss, blisters and round dark marks are different problems. How to tell them apart in Janesville, WI before anyone signs anything.

Inspecting an asphalt shingle slope after a hailstorm in Janesville, WI

Hail Damage Roof Inspection in Janesville: The Test Square and the Count

A hail inspection is a counting exercise inside a chalked ten-by-ten square, not a look. What gets counted in Janesville, WI, who is counting, and how the replace-or-repair call actually gets made.

Low-slope membrane roof edge on a building in Janesville, WI

Hail Damage on a Foam Roof in Janesville: What Breaks Under the Coating

On a foam or single-ply roof the hail damage is usually under the surface, and the assessment is a cut sample rather than a look. How SPF, TPO and EPDM actually fail in Janesville, WI.

Dormers on a shingle roof in Janesville, WI, where step flashing and kickout flashing carry water past the walls

Flashing on a Roof in Janesville: Where Roofs Actually Leak

Flashing is the metal at every joint on your roof, it is invisible from the ground, and it is what fails. What the pieces do in Janesville, WI, and how to tell if yours were done right.

Brick chimney and its flashing on a shingle roof in Janesville, WI, where four separate pieces of metal have to work as one assembly

Flashing Chimney Repair Cost in Janesville: What Sets the Number

A chimney needs four flashing pieces working as one, on masonry that has its own condition. What drives the price in Janesville, WI, and why no range fits.

Downspout discharging beside a foundation wall on a house in Janesville, WI

Downspout Drainage in Janesville: Where the Water Goes After the Elbow

A downspout emptying at the wall undoes the grading code on purpose. Extensions, buried lines, dry wells and the winter failure mode, for Janesville, WI houses.

Rotted sheathing and rafters exposed under a long-running roof leak in Janesville, WI

Cost to Fix a Leak in a Roof in Janesville: What Actually Moves the Number

A roof leak is a category, not a job. What separates a half-hour repair from a two-day one in Janesville, WI, and why no published range can price your roof.

Newly finished roof on a home in Janesville, WI — a capital improvement that adds to basis rather than a deduction

Can You Claim a New Roof on Your Taxes? Usually No — Here's What People Actually Mean

A roof on your own home is not deductible. It adds to your basis, which matters when you sell. What the energy credit covered, when roofs came off it, and the narrow cases that are real — sourced to IRS publications.

Attic roof framing and sheathing above a home in Janesville, WI

Attic Ventilation Calculator for a Janesville Roof

Work out your own attic ventilation number in Janesville, WI: floor area, the 1/150 or 1/300 divisor, square inches of net free area, and how many vents.

Close view of overlapping architectural asphalt shingle courses on a roof in Janesville, WI

3-Tab Shingles Versus Architectural in Janesville: One Layer or Two

A 3-tab shingle is one layer with cutouts. An architectural shingle is two layers bonded together. That single difference sets weight, wind rating, warranty and how the roof fails in Janesville, WI.

House with new roof decking and synthetic underlayment during a roof replacement in Janesville, WI

Roof Replacement Cost in Janesville: What Drives the Number

Roof replacement is priced per square, not per house. Here's what actually moves the bid in Janesville, WI, and which line items are worth paying for.

Roofer inspecting decking and underlayment on a residential roof in Janesville, WI

Roof Inspection Cost in Janesville: What You Get for the Money

A real roof inspection produces a photographed, slope-by-slope report. Here's what one costs in Janesville, WI, and how to tell it from a sales visit.

Dark standing seam metal roof with skylights on a home in Janesville, WI

Metal Roof vs Shingles in Janesville: The Honest Comparison

Metal costs roughly two to three times what asphalt does and lasts two to three times as long. Here's when that math works in Janesville, WI, and when it doesn't.

Chimneys and flashing details on a rooftop where leaks commonly begin in Janesville, WI

How to Find and Fix a Roof Leak in Janesville

Water rarely enters where the stain appears. Here's how to trace a roof leak in Janesville, WI, what you can fix yourself, and what needs a roofer.

Roofing installer fastening shingles over new underlayment in Janesville, WI

How Long Does a Roof Replacement Take in Janesville?

Most single-family re-roofs are one to three days of work. Here's the real timeline in Janesville, WI, including the scheduling part nobody warns you about.

Aging shingle roof with moss growth and granule loss in Janesville, WI

How Long Does a Roof Last in Janesville? Real Numbers

Rated life and actual life are different numbers. Here's what each roofing material really lasts in Janesville, WI, and the signs yours is near the end.

Storm clouds building over houses before roof damage in Janesville, WI

Does Insurance Cover Roof Replacement in Janesville?

Insurance pays for sudden storm damage, not for a worn-out roof. Here's how adjusters actually decide, and what ACV settlement means for Janesville, WI homeowners.

Start here

What we write about, and why

Every post here answers a question Janesville property owners actually ask before they hire anyone — what work costs, which materials are worth the upcharge, how long a job really takes, and the shortcuts that look fine for two years and then do not.

The writing comes from the same people doing the work in Janesville, WI and south central Wisconsin, which is why the numbers are specific and the advice sometimes tells you not to spend money.

Need help now rather than reading

Skip the articles and go to the page for what you need — each one covers pricing, scope and how to start:

Roof Replacement in Janesville — A full reroof in Janesville starts with a question that has nothing to do with shingles: what year was the house built? The answer decides which rulebook governs the work, and it moves the scope more than any brand choice ever will.
Roof Leak Repair in Janesville — A leak repair in Janesville is unregulated work on every house in the city, whatever year it went up. SPS 320.05 puts repairs and maintenance outside the Uniform Dwelling Code entirely.
Storm Damage Restoration in Janesville — After a storm the first thing we count on a Janesville roof is layers. SPS 321.28 forbids laying a new covering over existing roofing where two or more applications are already down, and pre-1980 houses in this city very often have exactly two.
Hail Damage Roofing in Janesville — Here is the part almost nobody in this trade says out loud: Wisconsin's Uniform Dwelling Code has no hail requirement. Read SPS 321.28 end to end and there is not a word about impact resistance, Class 4 ratings or UL 2218.
Wind Damage Roofing in Janesville — Wind rarely takes a roof that was fastened properly. In Janesville the difference usually comes down to two numbers written into SPS 321.28, and to whether the house sits on the side of the 1980 line where those numbers were legally binding on the installer.

Or call (833) 842-7537 for a free estimate.