Roof Repair, Restoration and Replacement in Park City, Utah

Snow is the design driver

NOAA’s 1991–2020 normals for the Park City station (about 6,900 feet) record about 22.4 inches of precipitation a year and about 202 days a year with a low at or below 32°F, more than half the year. Highs reach 90°F on fewer than five days a year. Compare that with the Salt Lake City airport (about 62 days at 90°F or more) and you see why a roof here spends most of its life cold.

Park City’s climatic design criteria for 2026 list a 115 mph design wind speed, seismic design category D or D1, a 40-inch frost line and a mean annual temperature of 42°F. For ground snow load the city does not list one number; residential projects are directed to Utah State University’s ground snow load map and commercial ones to the ASCE Hazard Tool, because load changes quickly with elevation. In 2019 the city’s chief building official described Park City’s snow-load criteria at the time as 300 pounds per square foot, stronger than a state change that year.

What snow does to a roof edge

In March 2019, after a heavy winter, Park City’s chief building official told KPCW that melting during the day and refreezing at night makes roof snow heavier, that a base layer of ice can slide and form an overhanging cornice at the roof edge, and that the sideways force on the edge can compromise a beam or post. Several roof and porch collapses were reported to the city that winter. He advised owners to note the snow on their roofs and to hire someone to remove it, and he cautioned that falling ice can hit neighboring homes, especially in Old Town.

We do not recommend anyone climb a snowy roof. A free inspection from The NuRoof Guys looks at shingles, flashing and the eave and valley details that ice loads punish, and our post on ice dams and freeze-thaw on Northern Utah roofs explains the freeze-thaw mechanism.

Many homes are not someone’s full-time residence

The ACS counts about 8,701 housing units in Park City but only about 3,596 occupied households (2020–2024), so most units are not occupied as a primary home at the time of the survey; the ACS counts those as vacant, which includes seasonal and second homes. The median home was built in 1989, and by our arithmetic only about 26% of units were built before 1980. For an unoccupied house, nobody may notice ice at the eaves or a developing leak until the owner returns. Ask whoever looks after your property to check the roof edge and ceilings after big storms.

Sun and elevation

The EPA’s UV Index guidance says UV intensity rises about 6% for every kilometer of elevation. At Park City’s elevation, summer UV is stronger than at the valley floor even though temperatures are cooler. UV is one of the aging factors discussed in why Northern Utah asphalt roofs age faster.

Repair, restore, or replace

• Repair for flashing, boots and isolated damage.
• GoNano restoration may suit an aging asphalt roof that is structurally sound; roofs with snow-load damage, leaks into the structure or failed decking need other work.
• Replacement when the roof has reached the end of its service life. See roof replacement or restoration in Utah.

Our roof services

• Roof repair
• GoNano roof restoration (for qualifying roofs only)
• Roof replacement
• Storm damage help

See the Summit County entry on our Utah service area list.

Related reading

• ice dams and freeze-thaw on Northern Utah roofs
• why Northern Utah asphalt roofs age faster
• roof replacement or restoration in Utah
• Utah roof maintenance checklist

Park City is a service area for The NuRoof Guys, not a local office or branch. Call 385-383-8479 and we will tell you whether we can help. Utah Contractor License #14225732-5501. Authorized GoNano installer. Local figures on this page come from the sources below; percentages marked “by our arithmetic” are our calculation from Census tables and are not NuRoof results.

Sources

1. American Community Survey 2020–2024 5-year estimates, tables B25003 (tenure), B25034 and B25035, via Census Reporter
2. NOAA NCEI U.S. Climate Normals 1991–2020 (annual/seasonal station files)
3. Park City Municipal, Climatic Geographic Design Criteria (2026)
4. Utah State University Utah Ground Snow Load Map
5. KPCW, “Even as snow melts, Park City building official says to keep an eye on rooftop snow” (March 25, 2019)
6. U.S. EPA, Learn About the UV Index