SnowLoadCheck

Prince George County, VA Roof Snow Load - 20 psf

How much snow is too much for a roof in Prince George County, VA?

Moderate
20 psf

20 psf: that's what ASCE 7-22 requires a typical heated home's roof in Prince George County to carry. The physics-based figure alone would be 14 psf, but ASCE 7's own low-slope minimum (§7.3.4) sets a floor of 20 psf for flat and low-pitch roofs here, which is the number that actually governs.

Picture it, not just weigh it: 44 in. if it's fresh powder, 16 in. once it settles, or a mere 4 in. if it's ice. Modern-code homes carry a load like this without issue; an older addition, a carport, or any flat-roofed section is where it is worth checking first.

Prince George County, VA: quick facts

How Prince George County compares

20 psf ranks #768 of 2,758 US counties with a mapped snow load (top 28%) - and #31 of 110 in Virginia. That's 1.7 psf above Virginia's own county-average design load of 18.3 psf.

Population 43,589 (FIPS 51149), roughly 37.1873°N 77.221°W. The 20 psf ground snow load ASCE 7-22 maps here becomes 20 psf once the code's own design factors are applied.

Typical snowfall in Prince George County, VA

NOAA's 30-year normal for Prince George County: 6.4 in. of snow a year, from the WAKEFIELD 1NW, VA US station. (fresh vs. packed vs. ice explains why.)

What this Prince George County figure assumes

This is a county-level reference figure for a typical heated home built to Risk Category II (ordinary residential), on a partially exposed lot - the assumptions ASCE 7-22 itself treats as the default case. A steeper roof, a fully exposed hilltop lot, an unheated structure, or a higher risk category all change the actual number.

Prince George County's permit office wants an address-specific figure, not this county average - the ASCE 7 Hazard Tool is free, takes under a minute, and outputs a PDF most reviewers accept. (How this figure is calculated.)