FRANKSVILLE, WI – October 29, 2026 – PRESSADVANTAGE –
A deck that supports a summer gathering has not necessarily been evaluated for snow sliding off the roof above it. For Franksville homeowners, this distinction matters as winter approaches. Wisconsin’s prescriptive deck guidance specifies a 40-pound-per-square-foot live load for certain designs, but those designs do not account for snow drifting or sliding from a roof. These conditions require engineering analysis rather than assumptions based on how sturdy the deck feels underfoot.
The November 10 date comes from ReadyWisconsin’s winter-storm guidance, which calls it the average date of Wisconsin’s first snowstorm. It is a statewide preparedness reference, not a forecast for Franksville this year. The agency does not explain on that page how it calculated the date or define the snowfall amount that counts as a storm. Homeowners should not use it to decide when a particular deck will first see snow.
Last year’s snowfall offered a local example of how conditions can vary across a small area. On November 9 and 10, the National Weather Service documented a narrow lake-effect snow band across Racine and Kenosha counties. Areas east of Interstate 94 received six to more than twelve inches, while totals dropped below an inch farther west. This was a single event in 2025, not a typical date for the first storm or a forecast for the coming season. However, it illustrates why snowfall totals from a nearby community may not reflect conditions at every property.
An important consideration for an existing deck is where snow may accumulate. A roof edge above a deck, a sheltered corner that catches drifting snow, or a lower platform beneath an upper roof can create a different loading pattern from snow spread evenly across an open surface. The weight also changes with the kind of snow and the water it holds. There is no universal number of inches that a homeowner can safely leave on every deck.
The state’s deck appendix makes a specific distinction. Its prescriptive spans are based on a 40-pound-per-square-foot live load and a separate dead-load assumption. The appendix says a deck built to those provisions is not approved for concentrated loads beyond its limits, including drifting and sliding snow, without engineering analysis. The number describes a design assumption for qualifying structures, not a guarantee about the condition or capacity of an older deck. The state’s roof snow-load provisions address roofs separately and should not be quoted as a walking deck’s rating.
A homeowner does not need to calculate the structure to notice reasons to ask for help. Separation where the deck meets the house, a shifting railing, visible decay at a connection or movement beneath a post all merit professional attention. So does a layout that regularly receives snow from a roof. An inspection can document what is accessible, but visible boards alone do not establish the condition of the framing, hardware or footings beneath them. A site-specific structural question may need an engineer rather than a general visual check.
Excel Custom Decks lists deck inspections among its services and describes reviewing ledgers, footings, framing, fasteners, railings and stairs. The company also designs and builds residential decks. Homeowners considering an inspection can explain any history of roof snow sliding onto the deck and bring photographs of conditions observed in a previous winter. That gives the person assessing the structure more than a snowfall date or an assumed load figure to work with.
NOAA’s October 15 winter outlook is another reason the season is on homeowners’ minds, but it does not predict Franksville’s first storm or a seasonal snowfall total. The practical step before snow arrives is to have a concerning deck or roof-to-deck configuration evaluated on its own facts. If a structure visibly moves or appears unsafe, people should stay off it and seek qualified help rather than walking onto it to inspect or clear snow.
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For more information about Excel Custom Decks, contact the company here:
Excel Custom Decks – Franksville
Josiah McDonald
+14144852817
josiahrmcdonald@gmail.com
12000 W 6 Mile Rd Suite A, Franksville, WI 53126, United States
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