Floor Refinishing in Antelope

Antelope Conditions That Affect Floor Refinishing

Antelope sits at about 121 feet in Sacramento County. Summer afternoons in the Sacramento Valley are very dry. In the NWS Sacramento climate record for Sacramento, average relative humidity at 4 PM is 31% in June and 30% in July and August, while average humidity at 4 AM in the same months is 78–79%.

Winters are wet and mild, but not frost-free. Sacramento Metro Airport, 12 miles west, averages a 55°F January high and 38°F low, about 18 inches of rain a year (83% November–March) and about 23 nights a year at 32°F or below. NWS Sacramento reports snow is so rare it 'may be disregarded as a climatic feature.' Cold, damp conditions do the reverse and stretch cure times, which mostly costs patience — a floor that is walkable is not yet a floor that is ready for furniture or rugs.

Antelope has no direct coastal exposure. NWS Sacramento reports that the Carquinez Strait is the only break in the Coast Ranges admitting significant marine air, and that summer heat waves are usually followed within two or three days by cool delta breezes, especially at night. Cool, damp days in Antelope lengthen finish cure times compared with a hot, dry one — a scheduling factor rather than a quality one.

Seasonal Gaps in Antelope Floors, by the Numbers

Seasonal gaps between boards are a common reason people ask about refinishing, and Antelope's measured climate shows how much of that gapping is simply the wood moving with the seasons. Measured at McClellan Airfield, Sacramento, then brought to 70°F, the air averages 37.4% relative humidity over the heating season and 52.5% over summer, which settles wood at roughly 7.3% and 9.6% moisture content. For a traditional 2¼-inch oak strip floor that is about 0.019 inch of seasonal shrinkage per board (about 1/51 inch); for 5-inch plank, about 0.043 inch. Gaps in that range that open in winter and close by summer should not be filled — filler packed into a winter gap gets crushed out, or pushes the boards toward cupping, once the wood takes its moisture back.

Source: Hourly ASOS dewpoint observations 2015–2025, Iowa Environmental Mesonet (Iowa State University); equilibrium moisture content from USDA Wood Handbook FPL-GTR-190 Eq. 4-5; movement from FPL-GTR-282 Eq. 13-3 and Table 13-5

What's Under the Finish

ACS 2020–2024 5-year estimates put 87.7% of Antelope's housing units in construction years 1980 or later, with a median year built of 1993 and 4.6% predating 1960. NAHB's analysis of the Census Bureau's Survey of Construction found 89.9% of new single-family homes in the Pacific division were built on slab in 2024, against 73% nationally. That is a regional figure for recent new construction, not a measurement of Antelope's existing stock. USDA maps most of Antelope as Fiddyment soils, with a cemented hardpan 20 to 40 inches down. No public record found states foundation type here, so it is confirmed on site.

A slab affects what can be refinished at all. Wood over concrete is usually engineered or glued-down, and an engineered floor can only be sanded if its wear layer is thick enough to survive it — some can take a full sanding, many can take one light pass, and some cannot be sanded at all. We measure the wear layer before quoting rather than after starting.

Raised floors are where the best refinishing candidates live: solid wood over a crawlspace, often with decades of wear and plenty of thickness left. It is also where cupping comes from. Sanding a cupped floor flat before the crawlspace moisture is fixed produces a floor that goes concave the other way once it dries — so the moisture reading comes first and the sanding comes second.

Source: NAHB analysis of the Census Bureau Survey of Construction, foundation type by region (2024)

Antelope Homes We Work In

Mainly single-family homes: ACS 2020–2024 5-year estimates put 79.2% of units in one-unit detached structures and the median year built at 1993, with 38.6% built 1990–1999 and 27.7% built 1980–1989; only 4.6% predate 1960 and 4.4% were built in 2010 or later. Antelope's 1980s and 1990s stock is where refinishing pays off most: homes of that period often have original wood under carpet, and when the wear layer is intact, refinishing keeps a floor that cannot be bought new. We check thickness at a vent or a doorway before recommending it.