New Roof Installation in the Flathead Valley
Sisu Roofing installs new roofs on new construction across the Flathead Valley, from custom homes outside Whitefish to shops and additions in Kalispell and Columbia Falls. A new build is a different job than a reroof: there is no tear-off, but there is a schedule with a framer behind you and drywall waiting on you. We show up when the deck is ready, dry the structure in fast, and deliver a roof system specified for snow country from the first course up.
Roofing that keeps a build on schedule
On new construction, the roof is the gate the rest of the build waits behind. Insulation, drywall, and finish work cannot start until the structure is dried in, and every wet week costs the whole project. We coordinate directly with your builder or GC, confirm deck readiness before mobilizing, and prioritize dry-in so interior trades can start even while flashing and finish details are completed. Our drone documentation is useful here too: the builder gets aerial photos of the completed roof for the project file, and so do you.
Specifying a roof system for snow country
A new build is the one chance to get every layer right without compromise, because nothing has to be worked around. We spec for what the Flathead actually throws at a roof: snow loads that sit for months, ice damming at eaves, valley wind, and summer hail. That means ice and water shield run past the warm-wall line at the eaves, ventilation designed with the insulation plan rather than after it, and valley and penetration details that assume water will sit there frozen. Done at build time, these details cost little. Retrofitted later, they cost a lot.
- Ice and water shield extended past the warm-wall line
- Ridge and intake ventilation designed with the attic insulation plan
- Closed or woven valleys detailed for ice, not merely rain
- Flashing integrated with the weather barrier, not layered over it
Shingle, metal, or a mix
Most new Flathead homes land on architectural shingles, standing seam metal, or a combination, and we install all three. Malarkey polymer-modified shingles give a new build strong hail and cold-weather performance at a friendly cost per square. Standing seam sheds snow and suits the modern builds going up around the valley. Plenty of our new-construction work mixes them: metal on porch roofs and shed dormers where snow slides matter, shingles on the main field. We will price the options against your plans so the decision is made on numbers, not guesses.
Additions, garages, and shops
New roof installation is not only full custom homes. We roof additions that have to tie cleanly into an existing roof, detached garages, and the pole barns and shops that go up on acreage from Marion to Creston. Tie-ins are where additions leak, so we weave the new roof into the old one at the underlayment level instead of caulking a seam and hoping. If the existing roof is near end of life, we will tell you before the addition goes on, because matching a new addition to a roof you replace two years later wastes money twice.
Dry-in scheduling coordinated with your builder
Roof systems specified for Flathead snow, ice, and hail from day one
Malarkey Certified Installer and Owens Corning Preferred Contractor
Shingle, standing seam metal, and mixed-material installs
Aerial photo documentation for your project file
Clean tie-ins on additions, done at the underlayment level
How it goes
- 01
Drone survey and plan review
We fly the site or review plans, measure the roof, and confirm deck readiness with your builder before quoting.
- 02
System specification
We spec underlayment, ice shield, ventilation, and roofing material for the structure and quote it in writing.
- 03
Dry-in and install
We prioritize getting the structure watertight fast, then complete flashing, venting, and finish details.
- 04
Final documentation
A finished-roof drone flight and photo set goes to you and your builder for the project record.