Do I need a permit for roof replacement in
Roy, Utah?

Roy roof replacement permits — the key details

Roy Building Department enforces Chapter 15 (Roof Assemblies and Roofing) of the 2021 International Building Code. The most critical rule for homeowners is IRC R907.4: no more than two layers of roof covering are permitted on any structure. If your home already has two layers (shingles over shingles, for example), a third application requires complete tear-off of the existing roof back to the deck. This is not optional and applies to every residential property in Roy, regardless of age or prior permitting. The penalty for ignoring this is severe — an inspector will catch it during the rough inspection (after tear-off but before new shingles go on), and you'll be ordered to stop work and remove the additional layer. Verify existing layer count with your contractor during the pre-bid walk. If unsure, request a small section of shingles be removed to confirm.

Underlayment and ice-and-water-shield requirements in Roy are stricter than in warmer climates, reflecting the Wasatch Front's 30–48 inch frost depth and consistent winter ice damming. IRC R905.2.7 (for asphalt shingles) requires an underlayment meeting ASTM D1970 standards; ice-and-water-shield must extend a minimum of 24 inches from the eaves and cover the first 2 feet up the roof (or up to the interior wall line of an unheated space). Synthetic underlayment (e.g., Underlayment Max, Synthetic Roofing Underlayment) is now standard in Roy; felt is acceptable but uncommon. Your roofing contractor's permit submittal must include the underlayment type, width of ice-and-water-shield, and a fastening schedule showing nails per square foot. Roy's permit reviewers will red-line submittals that lack these details. Plan to allocate 3–5 days for submittal corrections if your contractor's first package is incomplete.

Material changes — such as switching from asphalt shingles to metal, clay tile, or slate — require a structural evaluation per IRC R301.2.1. Metal and lightweight composite materials may not require additional support, but tile and slate add significant dead load (10–15 psf vs. 2–3 psf for asphalt). Roy requires a structural engineer's stamp (PE letter or calcs) confirming that existing rafters and trusses can support the new load. This costs $400–$800 and adds 1–2 weeks to the timeline. If you're simply replacing shingles with shingles of the same weight class, no engineer letter is needed, and the permit is straightforward. Changing colors (e.g., gray to brown shingles, same brand and weight) is fine without engineer review.

Roy's online permit portal (accessible via the Roy City website) accepts PDF submittals: roofing plan (roof-area dimensions and slope), product spec sheets (shingles, underlayment, ice-and-water-shield), and a contractor license copy (if not owner-builder). Owner-builders are allowed for owner-occupied single-family homes in Roy, but the submittal and inspection timeline are the same. Permit fees are based on roof area: typically $150–$300 for a standard 2,000–2,500 sq ft home. After approval, the permit is valid for 180 days; inspections are scheduled for (1) deck nailing/preparation, (2) underlayment and ice-and-water-shield, and (3) final. Most inspectors request 24-hour notice. Plan 1–2 weeks for initial review, 2–3 days for each inspection. If any defect is found (e.g., improper fastening density, ice-and-water-shield short of required distance), a re-inspection is required at no additional fee.

Flashing and penetrations (chimney, vent pipes, skylights, ridge vent) are part of the roof permit and must be detailed on your plan. IRC R905.2.8.1 (asphalt shingles) requires metal flashing around all penetrations, with step flashing lapped correctly and sealed per manufacturer specs. Common rejections include: chimney flashing counter-flashing not sealed, vent-pipe flashing boot twisted or kinked, or ridge-vent flashing installed upside-down. Your contractor should order and pre-stage all flashing before the permit is issued to avoid mid-job surprises. If your roof has a valley, ensure the plan specifies valley flashing type (open metal vs. woven shingles) — Roy inspectors are detail-oriented on valleys, especially with the high snow loads in the Wasatch region.

Three Roy roof replacement scenarios

Ice damming, frost depth, and underlayment in Roy's Wasatch climate

Roy sits at the northern edge of the Wasatch Front, with elevation ranges from 4,300 to 5,000+ feet depending on neighborhood. This elevation and northern latitude (41.2° N) create a predictable winter problem: ice damming. When warm interior air escapes through the attic and melts snow on the roof, meltwater runs down the roof and refreezes at the cold eaves, forming an ice dam that backs water under the shingles. IRC R905.2.7 and manufacturer specs (Owens Corning, GAF, IKO all publish Wasatch-specific guides) require ice-and-water-shield to extend 24 inches from the eaves, plus 2 feet up any unheated space (e.g., above a cathedral ceiling). Roy's permit reviewers cite this standard in nearly every roofing permit, and inspectors measure the ice-and-water-shield distance with a tape measure. If it falls short (common error: contractor installs 18 inches thinking it's close enough), the inspector red-tags it and requires re-application. This adds 2–3 days and frustration to the job.

Frost depth in Roy is 30–48 inches per the USDA NRCS Soil Survey. This doesn't directly affect roofing, but it indicates a cold, stable winter climate where ice damming is guaranteed. Your roof design should account for this through proper attic ventilation (soffit and ridge vents balanced per IRC R806.1) and ice-and-water-shield. A poorly ventilated attic (blocked soffit vents, insufficient ridge vent) combined with missing or short ice-and-water-shield will leak within the first winter. Roy's permit application doesn't directly inspect attic ventilation, but inspectors often note it and recommend blocking gaps if visible from the exterior. Consider upgrading soffit vents and ridge vent during your re-roof — it's the best time to invest in long-term durability.

Synthetic underlayment (e.g., Synthetic Roofing Underlayment, synthetic felt) is now the standard in Roy, replacing traditional #30 felt. Synthetic is superior in the Wasatch climate because it resists tear-out in wind (frost and freeze cycles make felt brittle) and drains moisture faster. Roy's permit staff prefer synthetic, and many contractors bid synthetic as standard. The cost difference is modest: ~$0.15–$0.25 per sq ft more than felt. On a 2,500 sq ft roof, that's $375–$625 total — well worth the longevity gain. Your contractor should confirm synthetic in the permit submittal and on the invoice; if they propose felt to cut costs, consider requesting a quote upgrade.

Permit fees, timeline, and owner-builder rules in Roy

Roy's permit fee schedule (available on the city website) bases roofing permit costs on roof area, typically $0.10–$0.14 per sq ft. For a 2,000 sq ft roof, that's $200–$280. For a 3,000 sq ft roof (e.g., two-story colonial), expect $300–$420. Fees are payable at permit issuance; online payment via the Roy permit portal is standard. No additional inspection fees are charged. Compare this to neighboring cities: Layton and Farmington roofing permits run similar rates ($0.08–$0.12 per sq ft), but Ogden (larger city, more complex review) charges $0.15–$0.18 per sq ft. Roy is competitive and transparent. Request a fee estimate before submitting your roofing plan.

Timeline in Roy averages 1–2 weeks from permit issuance to final inspection, assuming no deck damage or underlayment corrections. If your plan is incomplete (missing fastening schedule, ice-and-water-shield width not specified), expect a 3–5 day delay for resubmittal. If deck rot is discovered during the pre-tear-off inspection, that's a separate permit (structural repair, typically $50–$100 fee) and adds 5–7 days. Inspections are scheduled by calling the Building Department at least 24 hours in advance (same-day or next-day scheduling is typical). Your contractor should handle all inspection scheduling; confirm they're submitting the permit and scheduling, not leaving it to you.

Roy allows owner-builders (homeowners pulling their own permits) for owner-occupied single-family homes. The permit process and fee are identical to contractor-pulled permits. However, you (the owner) must be present at all inspections and sign off. For most homeowners, it's easier to let the roofing contractor pull the permit (they do it daily and know the system) — but if you're replacing a roof on a home you're building yourself, you can pull the permit directly via the Roy online portal. No bonding or licensing is required for owner-builders on residential roofing in Roy.

Common questions