Overview
Johnson Hardwood Coastal Signature Series 10 Sonoma is a European white oak engineered hardwood floor from Johnson Hardwood’s Coastal Signature Series 10, with a 4.0mm real-wood top layer and 5/8″ overall thickness. The planks are 10-1/4″ wide.
Specifications
| Manufacturer | Johnson Hardwood |
|---|---|
| Series | Coastal Signature Series 10 |
| Color | Sonoma |
| Manufacturer item # | CS10-4MM26003 |
| Flooring type | Engineered Hardwood |
| Species | European Oak |
| Top layer (veneer) | 4.0mm |
| Construction | Engineered (hardwood wear layer over a multi-ply core) |
| Width | 10-1/4″ |
| Overall thickness | 5/8″ |
| Length | Random |
| Surface texture | Light Wire Brushed |
| Look | European/Modern |
| Color tone | Light |
| Color variation | High |
| Finish | UV-Cured Aluminum Oxide |
| Gloss | Low |
| Edge | Bevel |
| Installation | Staple, Cleat, Glue, Float |
| Where it can go | On-grade, above-grade and below-grade (per Johnson) |
| Warranty | 35 Year Limited Residential |
| Sq ft per carton | Ask us — we confirm with the distributor |
| Last verified | Sept 22, 2026 (Johnson Hardwood product page) |
Color and Appearance
Johnson lists Sonoma as a light color tone with high color variation between planks, and a light wire brushed surface. Because it is real wood, every plank is different. Johnson does not publish a written color description, so we recommend seeing a sample in our showroom or at home before you decide.
Construction
Engineered construction pairs a real hardwood wear layer with a cross-layered core. It moves less than solid wood through Southern California’s dry Santa Ana winds and seasonal humidity changes, and Johnson rates it for on-, above- and below-grade installs. The 4.0mm top layer can typically be lightly screened and recoated, and thicker wear layers allow sanding; ask us what is possible for this floor.
Installation
Our crews check your subfloor for moisture and flatness and install to the manufacturer’s guidelines. Johnson lists these methods: Staple, Cleat, Glue, Float. We choose nail-down, glue-down or floating based on your subfloor and rooms. Learn more about our hardwood flooring installation.
Delivery and Pickup
Johnson Hardwood flooring is ordered through the distributor. Call to confirm current availability and lead time, and ask about delivery to your home or job site, or pickup from our store.
See It in Person
Visit our showroom at 21030 Victory Blvd, Woodland Hills (Mon–Fri 10–6, Sat 10–5), or request a free in-home estimate and we’ll bring samples to you.
Care
- Sweep or vacuum (hard-floor setting) regularly to remove grit.
- Clean with a barely damp mop and a cleaner made for finished wood floors. Never wet-mop or steam.
- Use felt pads under furniture and mats at entries.
- Keep indoor humidity steady to limit seasonal gaps.
Warranty Summary
Johnson lists this floor with a 35 Year Limited Residential warranty. Warranty coverage depends on proper installation, care and use, and has exclusions. Read the full terms on Johnson Hardwood’s warranty page.
More From the Coastal Signature Series 10
Frequently Asked Questions
How much does Johnson Hardwood Coastal Signature Series 10 Sonoma cost?
We quote Johnson Hardwood flooring by project, because the final price depends on square footage, current distributor pricing and whether you need installation. Call (818) 963-0878 or use the form below for current pricing and availability.
Can I see a sample before I buy?
Yes. Ask us to set aside a sample at our Woodland Hills showroom, or request a free in-home estimate and we will bring samples so you can see the color in your own light.
Can it go in a basement or over concrete?
Johnson rates this engineered floor for on-, above- and below-grade installs. Over concrete it is usually glued down or floated, after a moisture test. We check your slab during the estimate.
Do you install Johnson Hardwood flooring?
Yes. Our installers handle subfloor checks, acclimation, installation, trim and transitions.
Wood is a natural material. Color, grain and character vary from board to board and from samples; screens and lighting change how a floor looks. Please view a physical sample before ordering.
Also see: flooring installation · current flooring specials · contact and directions



