Isle of Wight County, VA Roof Snow Load - 10 psf
What ASCE 7 says about snow load in Isle of Wight County
That's Isle of Wight County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from. The physics-based figure alone would be 7 psf, but ASCE 7's own low-slope minimum (§7.3.4) sets a floor of 10 psf for flat and low-pitch roofs here, which is the number that actually governs.
Converted to something you can actually eyeball on a roof: about 22 in. of fresh powder, 8 in. once it settles and packs down, or just 2 in. if it's turned to ice. This is a modest add-on to standard roof loading - ordinary residential construction carries it without extra bracing.
Isle of Wight County, VA: quick facts
- Design roof snow load10 psf
- Ground snow load, ASCE 7 map10 psf
- National rank#1,803 of 2,758
- Virginia rank#108 of 110
- Population40,942
- Annual snowfall, NOAA normal5.8 in.
- FIPS51093
Where Isle of Wight County's figure sits nationally
Out of 2,758 rated US counties, Isle of Wight County sits at #1,803, the top 65% nationally - #108 of 110 within Virginia. 18.3 psf is Virginia's typical county figure - Isle of Wight County comes in 8.3 psf under it.
Near 36.9014°N 76.7076°W, FIPS 51093: Isle of Wight County counts 40,942 residents and a 10 psf map value, which the code's own factors turn into 10 psf.
How much it actually snows in Isle of Wight County
Most winters bring Isle of Wight County roughly 5.8 in. of snow - NOAA's normal at SUFFOLK LAKE KILBY, VA US, 13.2 mi off. (fresh vs. packed vs. ice explains why.)
Read this before you rely on it
Isle of Wight County's number above is ASCE 7-22's default case, not a custom calculation: ordinary residential occupancy, heated, sited on ground that's neither fully sheltered nor fully exposed. Any one of those changing - pitch, exposure, heating, occupancy - moves the real figure.
Nothing here substitutes for an address-level number. Get one free, in about a minute, from the ASCE 7 Hazard Tool using your own coordinates rather than Isle of Wight County's county-wide figure. Details: the calculation guide.