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Sisu Roofing & Construction
Sisu Roofing · Flathead Valley

Shingle Roofing in the Flathead Valley

Sisu Roofing installs shingle roofing in Kalispell, MT and across the Flathead Valley, and it is the system we put on more homes than any other. Asphalt shingles earn that spot honestly: they handle complex rooflines, cost less per square than metal, and the modern polymer-modified versions we install are engineered for exactly the hail and cold this valley delivers. Every shingle estimate starts with a drone flight over your roof, photos included.

Architectural asphalt shingle roof on a modern Flathead Valley home
Architectural asphalt shingle roof on a modern Flathead Valley home. Sisu job photo.

Not all asphalt shingles survive Montana

The gap between a builder-grade three-tab and a polymer-modified architectural shingle shows up fast here. Standard asphalt gets brittle in deep cold, and brittle shingles crack under foot traffic, hail, and freeze-thaw movement. That is why we install Malarkey as our primary line: their NEX polymer technology modifies the asphalt itself, keeping the mat flexible in cold and rated for hail impact. It is the same idea as the difference between a summer tire and a winter tire. Same category of product, built for different conditions, and this valley is firmly the winter-tire case.

What a certified install gets you

We are a Malarkey Certified Installer and an Owens Corning Preferred Contractor, and certification is about more than a logo. It means our crew installs to the manufacturer's spec: correct nailing pattern and placement, correct exposure, manufacturer-matched starter and ridge components, and ventilation that meets the system requirements. Most premature shingle failures we get called to repair are installation failures, not product failures. High nails, skipped starter strips, and choked ventilation kill roofs that the shingles themselves could have carried for decades. Malarkey's editors featured our Bigfork Vista install in their Contractor Corner, which says more than we could about the standard our crew works to.

Choosing a shingle line and color

Within the Malarkey and Owens Corning lines there is a real range: architectural profiles that fit most homes and budgets, heavier designer profiles for a deeper shadow line, and impact-rated options worth asking your insurance agent about. Color matters more than people expect in the Flathead, where the roof is often the largest surface you see against a backdrop of timber and mountains. We bring physical samples to the estimate, because a shingle in your hand under valley light beats a swatch on a screen every time.

  • Architectural shingles: the standard for most Flathead homes
  • Designer profiles: heavier weight, deeper shadow lines
  • Impact-rated options: worth a conversation with your insurer
  • Full range of colors, sampled in person at the estimate

The system under the shingles

Shingles are the wear surface. The roof is the whole stack, and we build the stack for this climate: ice and water shield at eaves and in valleys where ice dams push meltwater uphill, synthetic underlayment across the deck, metal drip edge, and balanced ridge and intake ventilation. Ventilation deserves the emphasis. A choked attic bakes shingles from below in July and feeds the ice dams that tear up eaves in January. Getting the airflow right is half of what makes a shingle roof last here.

What does a shingle roof cost in the Flathead Valley

We price every shingle roof from the drone survey and quote the full system, never shingles-per-square alone. These factors drive the number.

  • Roof area and how cut-up the roofline is: hips, valleys, and dormers add labor
  • Pitch: steeper roofs need more staging and slower, safer work
  • Shingle line: architectural, designer, or impact-rated
  • Tear-off scope and the condition of the decking underneath
  • Ventilation corrections, which many older Flathead homes need
  • Flashing details at chimneys, walls, and skylights

Malarkey polymer-modified shingles rated for hail and cold

Certified installation to manufacturer spec, not shortcuts

Ice and water shield placed where valley ice dams actually form

Ventilation balanced for Flathead winters and summers

Physical color samples brought to every estimate

Drone photo documentation before and after the install

How it goes

  1. 01

    Drone survey

    We fly the roof, measure it precisely, and share the photos so you see the starting condition.

  2. 02

    Shingle selection

    We review lines and colors with samples in hand and quote the complete system in writing.

  3. 03

    Install

    Tear-off if needed, deck check, underlayment and ice shield, then shingles nailed to manufacturer spec.

  4. 04

    Cleanup and final photos

    Magnetic nail sweep, full site cleanup, and a finished-roof drone flight delivered to you.

  • Malarkey Certified Contractor Malarkey Certified Contractor
  • Owens Corning Preferred Contractor Owens Corning Preferred Contractor
  • Flathead Building Association Flathead Building Association member
  • Verified Montana contractor license MT Contractor Lic. 400855IC

What homeowners say about Sisu shingle roofing

Kalispell and Flathead Valley homeowners, in their own words.

Ben and his team provided excellent communication and service. They were in and out and a couple of days tearing off and replacing a steep roof. We will use them again for future roofing needs on our homes.
Meghan S. · Google review
Ben was professional and communicative throughout the process. His crew worked hard and fast to complete project in an amazingly timely manner. The job site was spotless post installation. I highly recommend.
Pat C. · Google review

Read all 30 reviews on Google

Shingle Roofing: questions we actually get

How long do asphalt shingles last in Montana?

It depends on the shingle and the install. Standard asphalt ages faster here because cold makes it brittle and hail finds the weak spots. Polymer-modified shingles like Malarkey's hold flexibility in cold and resist impact, so they age closer to their design life. Ventilation and installation quality matter as much as the product.

Are architectural shingles worth it over 3-tab?

In this climate, yes. Architectural shingles are thicker, heavier, and rated for higher wind, and the polymer-modified versions add hail and cold performance that three-tabs simply do not have. The price difference is modest against the cost of the whole project, and the durability difference in the Flathead is not.

What are impact-resistant shingles and do I need them?

Impact-rated shingles are tested by dropping steel balls on them to simulate hail, with Class 4 the top rating. In a valley that catches summer hail, they are worth considering, and some insurers offer premium discounts for them. Ask your agent, then have us quote the impact-rated option alongside the standard one.

Can shingles be installed over an old roof?

It is sometimes allowed, but we rarely recommend it. An overlay hides deck rot, telegraphs the old roof's flaws through the new shingles, adds weight, and shortens the new roof's life. In snow country the honest answer is a tear-off, so problems get found and fixed instead of buried.

What color shingles are best for a Montana home?

Darker blends dominate here because they suit the timber-and-mountain backdrop and shed snow slightly faster in sun. Lighter colors run marginally cooler in summer. Honestly, aesthetics should lead: the energy difference is small, and you will look at the color for decades. We bring samples so you choose in real light.

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★★★★★ 5.0 · 30 Google reviews · MT Contractor Lic. 400855IC