Floor Refinishing in El Dorado Hills

El Dorado Hills Conditions That Affect Floor Refinishing

El Dorado Hills sits at about 768 feet in El Dorado County. El Dorado Hills sits in the Sierra foothills at about 768 feet, above the valley floor but not high enough to change the flooring calculus dramatically. At the nearest long-term station, Sacramento, the July normal daily high is 93.8°F and relative humidity in the NWS Sacramento record averages about 78% at 4 AM against 30% at 4 PM in July; the foothill position brings slightly cooler nights. That wide daily humidity swing is what a wood floor has to absorb here.

Winters are mild and wet, and the foothill setting brings noticeably more rain than the valley's 19.87-inch annual normal, though measurable snow is rare at the community's core elevation and limited to occasional light dustings in the higher eastern subdivisions. Freezes are light; the wet season runs November through the early spring. 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.

What's Under the Finish

El Dorado Hills' post-1990 subdivisions are predominantly slab-on-grade, but the defining local factor is terrain, not just era: the community climbs across foothill slopes, so slabs sit on engineered cut-and-fill pads and hillside lots require County grading permits. The ground is decomposed-granite foothill soil — the USDA maps the representative western-El-Dorado series (Andregg, weathered from granodiorite) as coarse-textured, well drained, and low in shrink-swell, with shallow metamorphic Auburn soils on steeper slopes — so expansive-clay heave is far less of a concern here than in the valley basins. What matters instead is slab flatness over cut-and-fill and confirming pad moisture with an in-situ RH test (ASTM F2170) before a rigid floor. NAHB's Census Survey of Construction tabulation (89.9% slab for new Pacific-division homes in 2024) is regional context. Foundation and pad conditions are 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)

El Dorado Hills Homes We Work In

Overwhelmingly post-1990 master-planned housing — Serrano opened in the late 1990s and Blackstone through the 2000s. ACS 2020–2024 5-year estimates place 77.1% of El Dorado Hills' 18,791 housing units in 1990-or-later construction, 35.3% of it built 2000–2009 alone, with the median year built in the 2000s and effectively no pre-1970 stock. Homes are frequently large, custom or semi-custom, on hillside lots. El Dorado Hills's 1990s, 2000s, and 2010s 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.