Concrete overlays in Fall City: what to know
The county’s residential drainage guidance sets its first line at 2,000 square feet of new and replaced impervious surface, and it names patios, driveways, and parking areas among the non-structure surfaces that count. How a thin overlay is classed under that test is a question we put to King County in writing before the lot is totaled.
Cracks come first. A slab that has dropped at a crack, or that still shows a crack opening, has a base problem, and a coat will not hold it. Sound slabs with hairline wear take the overlay, and sections that have moved are rebuilt or replaced first. An edge that reaches a county road shoulder or walk is held, because private work in the county road right-of-way needs a right-of-way use permit.
Permits and rules in Fall City
We check each slab’s total against the 2,000 square foot line, confirm the thin-overlay classing with King County in writing, and look for any edge that reaches the county right-of-way before the coat is ordered. The file keeps each reply with the date it arrived, and the topcoat date waits until every hold on the scope is closed.
Rules change and vary by parcel, so we confirm the current requirements with the city before we start.
How we approach it
- Total each slab and walk against the 2,000 square foot drainage line
- Rebuild any section that has moved before a coat goes on
- Put the thin-coat classing question to King County in writing
- Hold any edge that reaches the county right-of-way until the reply
For the full process, see our Concrete Overlays page.
Building in the cold months? See our guide to winter concrete pours.
Our concrete overlays work, serving Fall City
Examples of our work. We build concrete overlays in Fall City and the cities around it. See all of our work
Questions from Fall City homeowners
Does a Fall City overlay count toward the county drainage line?
It can. The residential drainage guidance counts 2,000 square feet of new and replaced impervious surface, and patios, driveways, and parking areas are named among the non-structure surfaces. How a thin coat is classed under the test goes to King County in writing, and we total the lot once that reply is filed.
Can an overlay fix a cracked Fall City driveway?
Only where the slab is sound and the crack is surface wear. A crack that has dropped or is still opening points to the base, and a coat will not hold it, so we rebuild or replace that section first. A repair that does not reach the base only hides the crack for a season.
Will a Fall City overlay near the road need a right-of-way permit?
A right-of-way use permit is required for private work in the county road right-of-way. An edge that reaches the shoulder or a walk is logged and held until King County answers in writing, so the coat stops at the property line.
Other work in Fall City
- Driveways & sidewalks in Fall City
- Patios & stairs in Fall City
- Retaining walls in Fall City
- Basement waterproofing in Fall City
- Drainage & French drains in Fall City