For the Trade
Flooring for General Contractors
A flooring partner that fits into your build schedule — clear lead times, clean subs, and floors that pass inspection the first time.
When flooring is one line item on a schedule with a dozen other trades, the last thing you need is a sub who's vague about timing or leaves a mess for the next crew. We give you a real install window, show up when we say we will, and keep the job site clean so the trades behind us aren't working around our debris.
We work directly with supers and PMs to coordinate around framing, paint, and cabinetry timelines, and we flag subfloor or moisture issues before they become a change order surprise. One accountable crew handles your project start to finish — no rotating subs, no guessing who's showing up.
Licensed CSLB C-15 (#1060673) and insured, so your flooring line item is covered and documented for the job file.
How We Work
Working With General Contractors
- Direct coordination with your super or PM — one point of contact, not a call center
- Realistic lead times and install windows built around your overall schedule
- Subfloor moisture testing and prep flagged early, before it becomes a change order
- Clean, contained job sites that respect the trades working before and after us
- Licensed, insured, and backed by our workmanship warranty on every unit
Specifications
What General Contractors Actually Need From a Flooring Sub
The published numbers behind a floor that passes: tolerances, test methods, and service conditions — with the standard each one comes from.
The jobsite-readiness gate, in writing
NWFA is explicit that wood flooring should not be delivered or installed until every wet trade inside the thermal envelope is finished — concrete, masonry, plaster, drywall, texturing, painting and power washing — and until the building is fully enclosed with windows, doors, siding, soffits, roof covering, insulation and ventilation in place. Handing a sub a slot before that is met is how a floor ends up cupping and the argument ends up on the schedule.
NWFA Installation Guidelines
Who owns substrate repair
The guidelines put this on the builder, not the flooring contractor: outside of sanding seams, the builder should address any substrate issues before the wood floor is delivered to the jobsite. We measure and document flatness across the span of each room and mark discrepancies on the deck, so the correction lands with the right trade at the right time instead of becoming a change order after material is already stacked in the garage.
NWFA Installation Guidelines
Flatness tolerance depends on the install method
Two different numbers, and specifying the wrong one costs money. For mechanical fasteners 1½ inches and longer, the subfloor must be flat to within 3/16 inch in 6 feet or ¼ inch in 10 feet. For glue-down, floating, or fasteners shorter than 1½ inches, it tightens to 1/8 inch in 6 feet or 3/16 inch in 10 feet. The floor does not need to be level — it needs to be flat, which is a different measurement and a cheaper fix if it is caught before finish.
NWFA Installation Guidelines
Moisture documented, not asserted
For solid wood over a wood subfloor, NWFA calls for readings at a minimum of 20 test locations for the first 1,000 square feet and 4 more per additional 100 square feet, averaged, with at least three tests per room and particular attention to exterior walls and plumbing. We record and photograph those results, which gives your job file something better than a sub's verbal assurance if a floor is ever questioned.
NWFA Installation Guidelines
These are the requirements the standards set, not a guarantee of outcome on any particular job. Always confirm current requirements with the issuing body and with the flooring manufacturer, whose written instructions govern where they are stricter.
What We Install
Flooring Capabilities
A full range of flooring for your projects — installed to spec, on schedule.
For the Trade
Frequently Asked Questions
When should flooring go into the schedule?
After every wet trade inside the building envelope is complete and the building is fully enclosed and conditioned. NWFA states that wood flooring should not be delivered or installed until concrete, masonry, plaster, drywall, texturing, painting and power washing are finished within the thermal envelope, and until windows, doors, siding, soffits, roof covering, insulation and ventilation are all in place. Flooring scheduled before that point is the single most common cause of a callback on a new build, and the cost of the callback is almost always larger than the cost of the delay.
Whose responsibility is it to flatten the subfloor?
The builder's, per the NWFA guidelines — outside of sanding seams, substrate issues should be addressed before wood flooring is delivered to the jobsite. In practice we measure flatness across each room during walkthrough, mark the out-of-tolerance areas on the deck itself, and document them, so the correction can be scheduled with whichever trade owns it rather than discovered on install day. That is a scheduling conversation early or a change order late.
What flatness tolerance should I hold my framer to?
It depends on how the floor will be attached, so specify the method first. Mechanical fasteners 1½ inches and longer require flat to within 3/16 inch in 6 feet or ¼ inch in 10 feet. Glue-down, floating, and shorter fasteners require 1/8 inch in 6 feet or 3/16 inch in 10 feet. Both are flatness, not level — a sloped-but-flat floor can be fine where an out-of-tolerance hump is not.
Are you licensed and insured for my job file?
Yes. Renaissance Floors holds California CSLB licence #1060673 in the C-15 Flooring and Floor Covering classification, and you can verify it yourself against the CSLB's public lookup rather than taking our word for it. We provide current insurance certificates for the job file on request, and installation is backed by a workmanship warranty.
Standards Cited
- NWFA — Wood Flooring Installation Guidelines & Technical Publications
Subfloor flatness tolerances, jobsite-readiness conditions, moisture-testing protocol, and service-range humidity.
- California Contractors State License Board — license lookup
Verify any California contractor's licence, classification and standing, including ours (#1060673).
External links are provided for reference and were verified live on 29 August 2026. Standards are revised over time — confirm the current edition with the issuing body.
Related
Keep Reading
Related pages: Trade Program, Hardwood Flooring, Engineered Hardwood, and Luxury Vinyl Plank.
A Flooring Partner for General Contractors
Call (916) 749-0272 to talk through your projects and timelines.