Shingles get the attention because they are the only part of a roof anyone sees from the driveway. They are also the last layer of a system that does most of its work out of sight. Underneath sit the wood deck that carries the weight, the membranes that stop meltwater, the metal that seals every seam, and the airflow that keeps the attic cold enough to stop ice from forming. When a roof fails in Utah County, the cause usually lives in one of those hidden layers.
A complete roof replacement is the one chance to get all of them right at the same time. Every old layer comes off, the structure gets checked, and the roof is rebuilt from the deck upward. That matters along the Wasatch Front, where one roof has to handle heavy wet snow, strong sun at elevation, hail from spring and summer storms, and wind that pours out of the canyons.
Snow is the load that sets the bar. Utah writes its own ground snow loads into its building code rather than relying on the national map, and the state table lists Provo at 31 pounds per square foot at an elevation of 4,541 feet. Because the number shifts with elevation and location, engineers and building officials use the Utah Ground Snow Load Map from Utah State University to estimate the 50 year ground snow load for a specific address, so a bench home and a valley floor home can face different numbers.
For homeowners in Utah County and the surrounding counties, Marvin Roofing Services handles complete roof replacements on houses, barns, and businesses, working with asphalt shingles, wood shake, and tin. The crew strips roofs down to the deck, including roofs buried under several layers of old shingles, and rebuilds them to stand up to hard Utah weather. Owner Spencer grew up in south Utah County and brings more than nine years of hands on roofing work to every job. When a full replacement is more than the roof needs, the same team takes care of roof repairs for leaks, missing shingles, and everyday wear. If you are weighing your options, request a roof evaluation and a free quote to see where your roof stands.
1. Tear Off
Tear off: removing every existing layer down to bare sheathing, including old underlayment, flashing, and nails.
Layering new shingles over old ones adds dead weight to a roof that already carries a snow load all winter, and it hides whatever rot or sagging is underneath. A full strip lets the crew see the structure. Before the first shingle comes off, confirm the contractor holds an active Utah license. Springville’s community development office notes that contractor license numbers in Utah end in 5501 and suggests checking the classifications listed on the license; roofing falls under S280. Ask how many layers they expect to find and how they will protect gutters and landscaping during cleanup.
2. Deck Inspection
Deck inspection: walking and probing the sheathing for soft spots, delamination, rot, and loose boards once it is exposed.
The deck is what actually holds the snow. Dark staining near the eaves often points to years of meltwater backing up from ice dams. Covering a weak board with new materials only hides the problem until the next heavy storm. Ask how damaged sheathing will be priced if they find it, and whether you will see photos before anything gets covered.
3. Drip Edge
Drip edge: an angled metal strip along the eaves and rakes that guides water off the roof and away from the fascia.
On a sunny winter afternoon, snow melts and runs to the roof edge every day. Without drip edge, that water curls back under the shingles and soaks the fascia, where it refreezes overnight. Ask whether the drip edge goes under the membrane at the eaves and over the underlayment along the rakes, which is the order that keeps water moving outward.
4. Ice and Water Barrier
Ice and water barrier: a peel and stick membrane that bonds to the deck and seals around nail shanks.
This is the layer that stops an ice dam from becoming a ceiling stain. When ice builds at the eaves, meltwater pools behind it and pushes upward under shingles. The residential code calls for this barrier where ice forming along the eaves has a history, and it must reach at least 24 inches inside the exterior wall line. Ask how far up the roof it will run, and whether valleys, skylights, and chimneys get it too.
5. Underlayment
Underlayment: a synthetic or felt sheet laid over the rest of the deck as a second line of water protection.
Shingles shed most water, but canyon wind can drive snow and rain sideways under the tabs, and hail can crack a shingle long before anyone notices. Underlayment catches what gets through. Ask which product they plan to use and whether it meets the shingle manufacturer’s requirements for the warranty.
6. Flashing
Flashing: shaped metal pieces that seal the joints where the roof meets walls, chimneys, valleys, and vents.
Freeze and thaw cycles pry at every joint, and intense sun at elevation breaks down the sealant that lazy installs depend on. Step flashing along walls, counterflashing at chimneys, and a kickout at the bottom of a sidewall keep water moving down instead of in. Ask whether old flashing will be replaced rather than reused, and how chimney counterflashing will be tied into the masonry.
7. Ventilation
Ventilation: a balanced flow of air entering at the soffits and leaving near the ridge.
A warm attic melts snow from below, and that meltwater refreezes at the cold eaves, building ice dams. In summer, trapped heat bakes shingles from underneath while the sun works on them from above. Good airflow fights both. Ask how they calculated intake and exhaust for your attic, and whether insulation is blocking the soffit vents.
8. Final Inspection
Final inspection: a walkthrough by the contractor plus the local building inspection where a permit applies.
This is where loose flashing, missed fasteners, damaged gutters, and stray nails in the driveway get caught. Permits in Utah run through the city or county, so requirements vary by address. Ask who pulls the permit, when the inspection happens, and what paperwork you receive at the end, including warranty registration and photos of the layers now hidden under your new shingles.
Those photos are worth keeping. Years from now, when a storm passes or the house changes hands, they are the only record of the work nobody can see from the driveway.
