Serving WyomingLyman, WY
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A finished Wyoming home with a new asphalt shingle roof
Uinta County · Wyoming

Roofing Contractor in Lyman, WY

Gregco Roofing & Construction roofs homes across Lyman and the Uinta County corridor. Storm damage, leaks, and old roofs. We take a look and show you the photos.

Complimentary Roof Inspection

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What we do in Lyman

Gregco Roofing & Construction Services in Lyman

You see the photos, then you decide what’s next.

Roofing in Lyman

New roofs and repairs in asphalt shingle or standing-seam metal.

Siding in Lyman

We replace storm-damaged siding so your home stays sealed and dry.

Gutters in Lyman

Seamless gutters that move snowmelt off the roof and away from the house.

Roofing conditions in Lyman

What Lyman does to a roof

Lyman sits at about 6,700 feet in the Bridger Valley, where cold air pools at night and winter runs deep. Brittle-cold shingles, about 40 inches of snow a year, and hard freeze-thaw drive ice dams and snow load, while open-valley wind and high-altitude UV wear the roof the rest of the year.

Elevation

about 6,700 ft

High-altitude UV ages shingles faster than at lower elevations.

Source: MAPLOGS / bestplaces.net

Average snowfall

about 40 in / year

Snow load and ice dams stress roofs each winter.

Source: bestplaces.net / US Climate Data

Setting

Bridger Valley, high mountain basin

Cold air pools at night, so roofs get deep freeze-thaw on roofs.

Source: US Geological Survey / NWS

Winters

freezing, snowy, windy

Brittle-cold shingles crack; wind lifts loose tabs.

Source: Weather Spark climate normals

Lyman, in detail

Roofing in Lyman, Uinta County

Lyman sits at about 6,700 feet in the Bridger Valley, a high mountain valley in Uinta County near historic Fort Bridger. Up here the cold runs deep and the snow stays late, and both are hard on a roof.

Cold is the first test. Bridger Valley is a high basin where cold air drains down off the surrounding hills and pools at night, so winter lows drop well below what towns at lower elevation see. Deep cold makes asphalt shingles brittle, and brittle shingles crack when the snow melts on a sunny afternoon and refreezes after dark. That freeze-thaw cycle lifts flashing, splits aging shingles, and builds ice dams along the eaves that back water up under the roof and into the ceiling. It is a leak most homeowners do not see until a stain shows up indoors.

Snow is the second. Lyman averages about 40 inches of snow a year, and the valley holds it. Wet, heavy snow sits on the roof and stresses the deck, the fasteners, and any low-slope or flat sections. When we inspect after a hard winter we check the valleys, the flashing, and the first few feet above the gutter line, because that is where snow load and ice dams do their damage.

Wind and sun finish the job. The open valley gives the wind a long run at the rooftops, lifting loose tabs and bending gutters, while the high-altitude UV dries out and bleaches shingles year-round. We look for missing tabs, exposed nail heads, and brittle, balding shingles.

Because of the snow load and the cold, material and detailing matter more here than in a town at lower elevation. Architectural asphalt shingles work, but they need strong airflow beneath the roof deck and ice-and-water shield at the eaves to fight ice dams. Standing-seam metal sheds snow fast and holds up to the cold, which is why more Bridger Valley homeowners ask about it every year. We document what your roof actually needs, show you the photos, and let you decide. We document. You decide.

We serve Lyman and the surrounding Bridger Valley, including Mountain View, Fort Bridger, Urie, and Robertson. If a storm just moved through, the inspection is free and there is no pressure to hire us.

Where we work in Lyman: Downtown Lyman, Bridger Valley, Urie.

What to expect

How it works

Four steps, always in the same order: on-site visit, we show you the photos, written scope, photo record.

  1. On-site visit. We look at the roof, the flashings and the drainage, and photograph what we find in Lyman.
  2. We show you the photos. You see the same conditions we saw, before anyone talks about scope.
  3. Written scope. What the work covers and what it does not, in writing.
  4. Photo record. We photograph the finished work and the conditions we found, for your records.
Answers, in plain words

Roofing questions from Lyman property owners

Straight answers about roofs, storms, and insurance claims. Still unsure? Just call.

Why are Lyman winters harder on a roof than the elevation suggests?

Cold air pooling. Lyman sits at about 6,700 feet on the floor of the Bridger Valley, a high mountain basin, per the US Geological Survey and the National Weather Service. At night the cold air drains off the surrounding hills and settles in the valley, so lows run below what the elevation alone would predict. Shingles stiffen overnight, then crack once the afternoon sun warms them.

My roof in Lyman only leaks in late winter. Why is that?

That timing usually points to an ice dam rather than a hole. Lyman averages about 40 inches of snow a year, per US Climate Data, and the valley holds on to it. Meltwater runs down the warmer part of the roof, refreezes over the cold eave, and backs up under the shingles. In summer the roof looks fine because there is no snow left to drive the water.

Have you worked on a roof in Lyman itself, or only around the Bridger Valley?

In Lyman itself. Our federal Statement of Qualifications records the Lyman Town Hall reroof — Town of Lyman, completed August 2025. That is a municipal roof in the middle of town, not a job an hour down the road, and it is documented rather than described.

Do you cover the smaller places around Lyman, or only the town itself?

Both. We work in Downtown Lyman and out through the Bridger Valley to Urie, Fort Bridger, Robertson and Mountain View, all inside Uinta County. A house at the edge of the valley carries the same 40 inches of snow a year, per US Climate Data, as one in the middle of town.

What belongs under the shingles at the eaves of a Lyman house?

Ice-and-water shield. It is a self-adhering membrane run along the lower edge of the roof, where meltwater refreezes. With about 40 inches of snow a year, per US Climate Data, and a valley floor that stays cold, Lyman eaves get that cycle repeatedly, and the shield is what keeps backed-up water outside.

Can a roof be replaced in Lyman in the middle of winter?

Sometimes, and temperature decides it, not the calendar. Asphalt shingles bond through a sealant strip that needs sun and warmth to set. On the Bridger Valley floor at Lyman, where cold air pools overnight, per the US Geological Survey and the National Weather Service, that can take a while. We look at the roof, then schedule around the weather.

Do the flat-roofed buildings in downtown Lyman need something different?

Yes. A low-slope roof does not shed, so snow sits on it. With about 40 inches a year in Lyman, per US Climate Data, and a valley that holds the cold, water pools and refreezes at seams and drains. Single-ply membrane systems like TPO or EPDM are built for that, and the seams get inspected first.

One side of my Lyman roof clears and the other holds snow all winter. Why?

Sun and aspect. In Lyman the slope facing the afternoon sun releases its snow, while the shaded slope stays loaded: cold air pools on the Bridger Valley floor overnight, per the US Geological Survey and the National Weather Service, so that side never warms enough to let go. It carries weight longer and ices at the eave.

Why do shingles come off a Lyman roof in winter and never in summer?

Because cold makes them brittle before the wind gets to them. Weather Spark describes Lyman winters as freezing, snowy and windy, and wind crosses the open valley floor with nothing to break it. A cold tab does not flex or reseal; it lifts, cracks at the fold, and tears away.

Why does a roof inspection in Lyman include a look at the ceilings inside?

Because the damage shows up indoors first. Deep freeze-thaw on the Bridger Valley floor, where Lyman sits at about 6,700 feet, per the US Geological Survey and the National Weather Service, pushes meltwater under the shingles at the eave. Outside the roof looks intact; inside there is a brown ring on the ceiling.

Should I have my Lyman roof checked before winter or wait until spring?

Before, if you have the choice. Once the Bridger Valley floor at Lyman freezes and about 40 inches of snow starts stacking up, per US Climate Data, a small repair at a flashing or an eave becomes a spring job. A check in early autumn finds those while they are still small.

What wears out a Lyman roof during the months with no snow?

Sun and wind. At Lyman's 6,700 feet, per bestplaces.net, the ultraviolet light is stronger than at lower elevations and it dries the asphalt out, curls shingle edges and loosens granules. The open Bridger Valley adds steady wind on top of it. Bald patches and grit in the downspout are the signs.

WYOMING SERVICE AREA

Where else Gregco works in Wyoming

11 communities across Wyoming and the corridor around it — the ones with a built page link straight to it.

Closest by: Mountain View, Fort Bridger, Urie, Robertson.

Wyoming

Service areas

Just over the Utah line

  • Woodruff
  • Randolph

Interactive service-area map

Communities across Wyoming

See service areas

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Red pins identify communities where Gregco currently accepts service inquiries. The map is for orientation, not a surveyed service boundary.

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Direct line(307) 313-6068Book onlineSee open times
Based inEvanston, WY
Service areaWyoming

Complimentary Roof Inspection

Google Verified4.9 on Google

Select a Google Maps address suggestion, or keep typing the address and the City, State, and ZIP fields will appear for you to complete.

We’ll confirm here once the request is sent.