Flat Roof Replacement in Hudson, WI
A flat roof on a Hudson home needs replacing when the membrane has worn out, leaks keep coming back after repairs, or water has soaked the layers underneath. Hudson Roofing Pros replaces flat and low-slope roofs on porches, garages, additions and dormers across Hudson and western Wisconsin, in EPDM, TPO, PVC, modified bitumen and built-up systems.
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- Licensed
- Insured
- Since 2016
- Certified Technicians
- 10-Year Workmanship Warranty
- GAF Certified Contractor
When Does a Hudson Flat Roof Need Replacing?
A Hudson flat roof needs replacing when the membrane is cracked, split or worn thin across much of the roof, when leaks return in new places after each repair, or when the insulation and deck under it are wet. A flat roof holds snow and meltwater longer than a pitched roof does, and western Wisconsin gets roughly 45 to 50 inches of snow a year, so a tired membrane gets tested every winter.
Age gives you a starting point. Typical lifespans run about 15 to 25 years for EPDM rubber, 7 to 20 years for TPO, about 20 years for modified bitumen and about 30 years for a built-up roof, and the real figure depends on the weather, the quality of the material and how well the roof has been kept up.
If the trouble is one leak, one torn seam or one bad patch of flashing and the rest of the roof is sound, flat roof repair costs less and fixes it. We tell you which one your roof needs after we have been up on it.
One leak or many?
Sound roof, small leak: repair it
A single leak on an otherwise solid flat roof can usually be patched, while leaks in several places point to a new roof.
Which Flat Roof Material Suits Your Hudson Home?
The right flat roof material for a Hudson home depends on what is on the roof now, how the roof is used, how much it slopes and your budget. These are the systems we install on flat and low-slope roofs.
EPDM Rubber
EPDM rubber roofing is a single sheet of synthetic rubber, with a typical life of 15 to 25 years.
TPO
TPO roofing is a single-ply membrane with a typical life of 7 to 20 years.
PVC
PVC roofing is a single-ply membrane used on homes and businesses alike.
Modified Bitumen
A modified bitumen roof is laid in asphalt-based plies and typically lasts about 20 years.
Built-Up Roofing
A built-up roof, the old tar and gravel roof, typically lasts about 30 years.
Rolled Roofing
Rolled roofing is a low-cost asphalt sheet for sheds, detached garages and other low-slope outbuildings.
A roof that is sound but aging can sometimes buy time with roof coatings, which seal the surface without replacing the roof.
How We Replace a Flat Roof in Hudson
We replace a Hudson flat roof by inspecting it, pricing it in writing, tearing off what has to come off, repairing the deck, and then installing and flashing the new membrane to the maker's instructions. Garrett Olson oversees every project, and the same crew does the work from first inspection to final cleanup.
- 1
Inspect the Roof
We check the membrane, seams, flashing, drains and edges, and look for wet insulation and soft decking underneath.
- 2
Price It in Writing
You get a written estimate naming the material, the work and the price.
- 3
Tear Off the Old Roof
We remove the old roofing where it has to come off, which is the only way to see the deck.
- 4
Repair the Deck
Rotted or soft decking is replaced so the new membrane sits on a solid base.
- 5
Install and Flash the Membrane
We lay the new roof and flash it at walls, edges, vents and drains to the manufacturer's instructions.
- 6
Clean Up the Job Site
We clear the debris and sweep for nails before we leave.
Not sure if your flat roof needs repairing or replacing?
Tell us where the water is showing up and how old the roof is, and we will come and look.
Should You Repair or Replace Your Hudson Flat Roof?
You should repair a Hudson flat roof when the damage is in one place and the rest of the membrane is sound, and replace it when the membrane is worn across the roof or water has soaked what lies beneath. Patching the surface over wet insulation leaves the water trapped under the new patch.
Repair makes sense when
- The leak comes from one seam, puncture or flashing
- The membrane is flexible and intact elsewhere
- The deck and insulation are dry
- The roof is well short of its typical life
Replacement makes sense when
- Leaks keep appearing in new places
- The membrane is cracked, brittle or split across the roof
- Insulation or decking under the roof is wet or soft
- The roof already carries two layers of roofing
What Does Flat Roof Replacement Cost in Hudson?
Flat roof replacement costs $4,000 to $21,000 a job, or $4 to $14 per square foot, as a national range, not a quote. No published figure exists for Hudson itself, and the price for your roof depends on its size, the material, how much has to be torn off and how much of the deck needs replacing.
Flat roof replacement by material
nationalNational ranges, not quotes. We price your roof in writing after seeing it.
Want a written price for your new flat roof?
We measure the roof, check what is under the membrane and put the price on paper.
What Wisconsin Rules Apply to a Flat Roof Replacement in Hudson?
Wisconsin's rules for replacing a flat roof on a Hudson home limit how many layers it may carry and require the new roof to go on to the manufacturer's instructions or a recognized national standard. A new roof may not go over a roof that already has two or more layers, or over one that is water-soaked or too deteriorated to be a sound base, so those roofs are torn off.
In the City of Hudson, new or replacement roofing needs no building permit when there are no structural changes or repairs, while structural work does. Hammond requires a reroof permit from the Village Clerk, and for other towns and villages we confirm the permit rules with your local building inspector before work starts.
Snow is the other Wisconsin factor on a flat roof. New homes in St. Croix County are designed for a roof snow load of at least 40 pounds per square foot and in Pierce County at least 30, which is a design minimum for new construction, not a measure of what an older roof can hold.
Who Can Replace a Flat Roof on a Hudson Home?
A contractor holding Wisconsin's Dwelling Contractor certification, with a certified Dwelling Contractor Qualifier, can replace a Flat Roof on a Hudson Home, because that is the credential the state requires of anyone who pulls a building permit for work on a one- or two-family home, and Wisconsin has no roofing-specific license. Hudson Roofing Pros does this work, and when you book with us or anyone else, ask for proof of the credential and of insurance.
You can check a contractor's credential on the state's credential lookup. For a flat roof on a shop, office or apartment building, our commercial roofing service covers the work, since the state's one- and two-family dwelling code does not apply to commercial buildings.
Flat Roof Replacement FAQs
How Long Does a Flat Roof Last in Wisconsin?
A flat roof typically lasts about 15 to 25 years in EPDM, 7 to 20 years in TPO, about 20 years in modified bitumen and about 30 years as a built-up roof. Snow, ice, the quality of the material and upkeep all move those figures.
Can a New Flat Roof Go Over the Old One?
A new flat roof can go over one existing layer only if that roof is dry and sound enough to be a base. If the roof already has two layers, or it is water-soaked or deteriorated, Wisconsin's code requires a tear-off.
Do I Need a Permit to Replace a Flat Roof in Hudson?
No permit is needed to replace a flat roof on a City of Hudson home when there are no structural changes or repairs, but structural work needs one. Hammond requires a reroof permit from the Village Clerk, and elsewhere we confirm the rules with the local building inspector.
Will Insurance Pay for a New Flat Roof?
Insurance pays to repair or replace the part of a flat roof damaged by a covered loss such as hail or wind, minus your deductible, but not a roof that is simply worn out. An insurer may also decline to renew a policy because of a worn-out roof.
Do You Replace Flat Roofs on Businesses Too?
Yes, Hudson Roofing Pros replaces flat roofs on shops, offices and other buildings as well as homes. Our commercial roof replacement service covers that work.
Get a flat roof replacement estimate
Send the form or call us with your address and what you know about the flat roof, and we will arrange a time to inspect it and price the replacement in writing.
Call now (651) 691-2168 Open 24 hours, 7 days a week