Homeowner repair planning
Water-Table Skirt Board Damage in Los Altos Hills: Trim Alone or the First Siding Course Too?
A homeowner's decision guide to whether a water-table skirt board repair should stay in the trim or extend to the first siding course.
At the base of an exterior wall, the water-table or skirt board is the trim piece that sits just above the foundation and below the lowest siding course. When it shows staining, a darkened seam, or a section that looks swollen, the real question for a Los Altos Hills property is not only whether the board needs replacing — it is whether the siding course above it is still sound, or whether the repair needs to reach one course higher.
What the base of the wall shows, and what stays unknown
From the yard, you can note where paint has lifted, where a seam has darkened, or where the board's bottom edge looks swollen compared with the rest of the run. Photograph the condition from a normal standing position, in daylight, without touching the board, flexing it, or stepping onto the planting bed or irrigation line beneath it. What you cannot determine by looking is how far moisture has traveled behind the siding, whether the sheathing or framing behind the first course is affected, or whether a detail further up the wall is involved. Settling that takes a professional on site, with the area opened in a controlled way — not an inference from across the yard.
Who owns the water, and who owns the wood
Several separate questions sit behind one visible stain, and each belongs to a different provider. Whatever let water reach the wall base is a separate question from the wood repair: a sprinkler head, site grading, or a gutter and downspout detail are all places a water-source professional checks, not the skirt board itself. If water intrusion was significant, a drying contractor may need to address moisture in the wall cavity before new wood goes in. If there is any suspicion of mold, that call goes to a qualified mold or indoor air specialist, never to a guess from appearance. Steady Craftsman's exterior trim repair scope covers the affected wood itself — the skirt board, and, if the assessment finds it necessary, the first course of siding above it — not the irrigation, drainage or finish-material questions those other providers answer.
Trim board alone, or the first course too
| Condition found at assessment | What a trim-only repair covers | What extending to the first course adds |
|---|---|---|
| Staining limited to the skirt board's face and bottom edge | Remove and replace the skirt board section; finish to match | Not needed if the course above tests sound |
| Soft wood found where the skirt board meets the first siding course | Skirt board replacement, with the joint detail rebuilt | First course removed in that section to rebuild the joint |
| Swelling or softness found in the siding course itself once opened | Scope pauses for review | First course section replaced, fastening pattern matched |
| Moisture reading stays elevated after the skirt board is exposed | Repair holds until the water-source question is resolved | Same, until drying or source work is confirmed complete |
Scope, stop point and closeout records
Ask for a written scope that names the exact board or boards being replaced, states whether the first siding course is included, and describes the finish approach for matching the existing siding profile and paint line. The scope should also set a stop point: if, once the skirt board is removed, the assessment finds the sheathing, framing or a wider section of siding affected than first visible, work pauses there. See what a revised scope should explain before any work continues past that point — a record of what was found and a revised scope should be approved first. Once the repair closes, ask for dated before-and-after photos of the opened area, a written description of what was replaced, confirmation of the finish and paint match used, and a note on whether the water-source question was resolved separately and by whom; this closeout checklist covers what else is worth keeping. Save the record with your other property files — it is useful if the same wall area changes again later, or if a buyer asks what work was done.
A Los Altos Hills process note
The Los Altos Hills Building Department page states that all building permits must be submitted electronically through the Los Altos Hills eTrakit portal. Rather than guessing whether your specific skirt-board or siding-course repair needs a permit, describe the exact alteration — board replacement only, or board plus one siding course — to the Building Department and ask about that alteration directly.
Questions homeowners ask
Does a water-table repair always mean the siding above it is damaged too?
No. Some skirt board repairs stay in the trim piece alone; the assessment, not the visible stain, decides whether the first course needs to come off.
Can the same contractor confirm the water source and repair the wood?
Steady Craftsman's scope is the affected wood. The water source — irrigation, drainage, or another cause — is confirmed by whichever provider services that system.
What if more damage shows up once the board is off?
That is what the written scope's stop point is for: work pauses, you see what was found, and a revised scope is agreed before continuing.
The Steady Craftsman team reviews each address before confirming whether the property can be served. Contact the Bay Area team, and the team will confirm property fit, the component, access and availability before any work is scheduled.