Janesville Premium Roofing provides professional asphalt shingle roofs in Janesville, WI for residential and commercial properties across south central Wisconsin. Asphalt covers almost every roof in Janesville, and the Uniform Dwelling Code is unusually specific about it. What changes with the year on the deed is not the right way to install a shingle. It is who has the standing to make you do it that way.
SPS 321.28 calls for underlayment of No. 15 asphalt-impregnated felt or an equivalent Type I material showing no water transmission under ASTM D226 or ASTM D4869. Fiberglass shingles have to conform to ASTM D3462, and laminated products need at least 1450 grams of tear strength per ply. Those are real, checkable numbers printed on the wrapper of a bundle. You can read them off the bundle in the driveway before the first square goes down.
Above June 1, 1980 those lines are enforceable against your contractor. Below it they are good practice and nothing more, which is exactly why we put them in the estimate by name. If a quote says premium underlayment and stops there, you bought a word. If it says No. 15 felt or a labeled ASTM D226 Type I synthetic, you bought a specification.
The deck is where older houses really diverge. Pre-1980 Janesville homes are usually sheathed in nominal boards with gaps between them, and a nail gun set for panel sheathing can drive a fastener straight into a gap where it holds nothing. We adjust nail length, watch line placement course by course, and replace boards that have lost grip rather than nailing beside them. A nail in a gap is a nail that is not there.
On the shingle itself we favor a laminated product over three-tab for nearly every house here, and we will tell you why. The double layer gives the fastener more mat to bite, and the heavier shingle lies flatter over an uneven old deck. Three-tab still makes sense on a rental with a short hold or a small detached garage, and we will quote it. We will not pretend otherwise to sell you a heavier product.
Every reroof gets a starter course with its own factory sealant at eaves and rakes, metal drip edge, and valleys built the way the section describes rather than woven because weaving is quicker. None of that is exotic. It is the ordinary standard, applied to houses where nobody has the authority to require any of it. The ordinary standard, done every time, is most of what separates a twenty-year roof from a twelve-year one.
Our licensed and insured team brings the right materials and equipment to every job — No. 15 asphalt-impregnated felt underlayment, ASTM D4869 Type I underlayment felt, ring-shank nails set into 1x6 board sheathing, No. 28 gauge open-valley sheet metal, 50-pound roll roofing in closed valleys, step flashing and masonry chimney crickets — and backs the work with a written workmanship warranty. We serve Janesville and nearby communities including Beloit, Edgerton, Milton, Evansville.
What We Handle
Everything our asphalt shingle roofs in Janesville covers
One crew, one point of contact, and the full range of asphalt shingle roofs work in Janesville, WI. If it is on this list we do it in house rather than handing it to a subcontractor:
- asphalt shingle roofing Janesville
- architectural shingles
- three tab shingle replacement
- ASTM D3462 shingles
- synthetic underlayment
- felt underlayment
- laminated shingle installation
- shingle nailing pattern
- board sheathing shingle roof
- shingle roof cost Rock County
Not sure which one describes your situation? Describe it in plain words and we will sort it out — or browse the rest of our Janesville services.
Materials, equipment and how we do asphalt shingle roofs
The difference between asphalt shingle roofs that lasts and asphalt shingle roofs that gets redone in three years is almost always preparation and materials, not the finish you see on day one. We work with No. 15 asphalt-impregnated felt underlayment, ASTM D4869 Type I underlayment felt, ring-shank nails set into 1x6 board sheathing, No. 28 gauge open-valley sheet metal, spec them to the job instead of to the invoice, and write the material grades into the free estimate so you know exactly what you are buying.
Every Janesville job runs the same way: site walk and measurements, written scope and fixed price, protection of the surrounding area, then the work itself with a daily clean-up. Years of roofing work in south central Wisconsin means we have already met whatever your property is going to throw at us — awkward access, older construction, an HOA with opinions.
Where we do asphalt shingle roofs outside Janesville
Janesville Premium Roofing covers Janesville and the surrounding communities of south central Wisconsin. Crews run out to the same nearby cities every week, so an out-of-town job does not mean an out-of-town price.
- Asphalt Shingle Roofs in Beloit, WI — Rock County, population 36,657
- Asphalt Shingle Roofs in Edgerton, WI — Rock County, population 5,945
- Asphalt Shingle Roofs in Milton, WI — Rock County, population 5,716
- Asphalt Shingle Roofs in Evansville, WI — Rock County, population 5,703
- Asphalt Shingle Roofs in Clinton, WI — Rock County, population 2,221
- Asphalt Shingle Roofs in Orfordville, WI — Rock County, population 1,473
Start on the Janesville Premium Roofing homepage for a free estimate, or call (844) 511-2320 and describe the job.
Why Janesville Chooses Janesville Premium Roofing
- ✓We pull the assessor's construction year before we price a roof, because June 1, 1980 decides whether the state code governs your reroof or your contract has to.
- ✓Our estimates name specifications rather than adjectives: No. 15 felt or a labeled ASTM D226 Type I synthetic, four fasteners per strip shingle, a two-inch head lap.
- ✓We count existing layers by lifting shingles at the rake and a valley, and the count goes in writing before anything is sent to your insurance carrier.
- ✓We go in the attic on every inspection. Fastener rust, valley staining and packed eaves show on the underside of the sheathing long before they show on top.
The standards behind asphalt shingle roofs
Quality here is not a matter of opinion — it is written down. The asphalt shingle roofs work we do in Janesville follows published industry standards: NRCA publishes the Roofing Manual, the industry's reference for details and slope minimums, and Asphalt Roofing Manufacturers Association sets the shingle application and ventilation guidance the warranties reference. If a contractor cannot tell you which standard a detail comes from, that is worth asking about before you sign.
Every asphalt shingle roofs project in Janesville gets the same attention, whether it is a single room or a full commercial job. We show up on schedule, keep the site clean, and stand behind the work — the estimate is free and there is no pressure.
Ready to get started? Call (844) 511-2320 for a free asphalt shingle roofs free estimate in Janesville, or request a quote and we'll get right back to you.