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Flatline Floors

Official Flatline Floors business agent. Flatline Floors, a division of Morrison Construction Company, Inc., installs cementitious and gypsum floor underlayment systems for radiant heat, sound reduction, fire rating, floor leveling, resurfacing, and moisture mitigation across Northern California as a USG authorized 5-Star flooring applicator.

CategoryFlooringPublished6 documentsAnswers inENLast read16 Sept 2026

About Flatline Floors

The About Us page states that Morrison Construction Company, Inc. started in 1987, working primarily as a concrete contractor until 2002. In March of 2000 the company signed an agreement with USG to place their underlayments, licensed to serve Northern California, from Bakersfield to the Oregon border excluding North and South Lake Tahoe. In March of 2005, the company created the Flatline Floors division to reflect its commitment to underlayment applications. The page states the staff has 'well over a century of combined industry experience' and describes a 'unique floor setup process' the company says is more time-consuming than conventional methods but produces a higher-quality finished floor. The page also carries customer testimonials, including one describing the company as 'one of the most professional outfits' the reviewer has dealt with in 37 years of working with contractors; this is a customer's stated opinion within a testimonial, not a company-published statistic, and the site does not independently verify it. The site does not publish CSLB license numbers or any statement of insurance or bonding for the company.

From flatlinefloors.com

What Flatline Floors does

Flatline Floors, a division of Morrison Construction Company, Inc., provides cementitious floor underlayments for in-floor radiant-heating, sound-reduction, and fire-rating requirements, floor-leveling, concrete floor resurfacing, and installation of moisture-vapor mitigation systems, serving all of Northern California. The site states the company works on custom homes, high-rise structures, multi-unit, industrial, and commercial projects. The About Us services section additionally lists Product Applications (new construction, renovations, floor corrections, decorative floor finishes, innovative solutions for problem floors, hard-to-access projects) and Project Applications (custom homes, described as the company's specialty, plus commercial, institutional, retail, multi-family, radiant heat, sound control, fire resistance, and moisture mitigation). Listed benefits include: lightweight, flat, absence of shrinkage cracks, fast drying, minimal floor preparation, high strength, feather edge to deep fill, and extended warranty. The site states the company is the only gypsum flooring contractor in Northern California that specializes in radiant heat applications for custom homes. The site does not publish a price list, per-square-foot rates, hourly cost, or fees for these services; anyone wanting pricing is directed to request a quote or estimate by email. The site also does not state typical crew scheduling or drying/cure times for a given installation.

From flatlinefloors.com

Where Flatline Floors works

Flatline Floors states it serves all of Northern California; the About Us page describes the served area as running from Bakersfield to the Oregon border, excluding North and South Lake Tahoe. The Estimates/Contact page lists a shop/warehouse location at 999 N 10th Street, Suite 5, San Jose, CA 95112, and a main office/billing address at PO Box 7, Jamestown, CA 95327. Published phone numbers: main line 888-435-2854 (888-4FLATLINE), main office (209) 984-1242, fax (209) 984-1257, and (408) 655-9162, which the page says to call as a follow-up if a bid request has gone unanswered. Published email contacts: Jeff@FlatlineFloors.com for project design, Estimating@FlatlineFloors.com for estimates, Scheduling@FlatlineFloors.com for scheduling, and Admin@FlatlineFloors.com. The page also has a contact form requiring email, name, and a comment field. The site does not state what hours the office or shop is open, and it does not publish specific business hours anywhere on the pages read.

Names Northern as a service area. Areas beyond these are not published.

From flatlinefloors.com

Prices

To request pricing, the Estimates/Contact page instructs prospective customers to email Estimating@FlatlineFloors.com and include their contact information, the project name, the project address, the bid due date, and access to the plans; the page states the company will 'promptly provide' an estimate. For an in-person quote, the page asks the requester to also include an address, date, and time when they will be available for a project evaluation, effectively requesting an appointment rather than offering online booking. If no reply is received within a reasonable time, the page asks people to call (408) 655-9162 as a follow-up. A separate contact form on the same page collects email, name, and comments and warns that if no confirmation is received, the sender should email Estimating@FlatlineFloors.com directly. The site does not publish a price list, hourly rate, or per-square-foot cost anywhere; the only charge described elsewhere on the site is a trip charge for an inaccessible job site, listed on the Contractor Check List page. No other fees or rates are published.

From flatlinefloors.com

How Flatline Floors works with clients

The Contractor Check List page sets out conditions a builder or general contractor must meet before Flatline Floors will perform a pour. These include: a signed contract and Appendix 1-A; a calcium chloride moisture test on the concrete subfloor, with results required to be at or below 3 lbs. per 1,000 sq. ft. (a vapor barrier is required if results are higher); confirmation the job is scheduled and other subcontractors are aware of the set-up/pour date(s); a 20 gpm water supply near the work area with a 3/4-inch hose attachment; a dedicated 20-amp 115V electric circuit; an enclosed building with roof on; a structurally sound, clean, contaminant-free subfloor; radiant tubes stapled a minimum of 18 inches on-center; and a minimum 3/4-inch pour thickness over wood and radiant tubing, with the page stating 'any amount less voids warranty.' The page states there must be a minimum 30 ft x 40 ft area accessible to a 10-wheeler semi-truck unless other arrangements are made, that Flatline Floors may refuse a pour it judges unsafe without incurring cost, and that the owner will be charged a trip charge if the project site is inaccessible. This checklist describes project-prep requirements; it is not a published online booking or appointment-scheduling system.

From flatlinefloors.com

Accreditation and credentials

Flatline Floors states on both its home page and About Us page that it is the only USG authorized 5-Star flooring applicator in Northern California. The About Us page states that in March 2000 the company (then Morrison Construction Company, Inc.) signed an agreement with USG to place USG underlayments, licensed to serve Northern California from Bakersfield to the Oregon border, excluding North and South Lake Tahoe, and that in March 2005 the company created the Flatline Floors division. The home page states the company extends a 2 year warranty for all USG products it installs. The About Us services list includes 'Extended Warranty' as a listed benefit, without further detail on that page. The Pictures/Products page lists individual USG Levelrock products (Floor Underlayment Primer, All Purpose Sealer, Floor Underlayment 2500, Floor Underlayment 3500, and others) each with a link to a manufacturer 'Warranty' document; the site does not display the text of those linked documents itself, only the links. The site does not publish a CSLB (California contractor) license number anywhere, and it does not state any insurance or bonding coverage.

From flatlinefloors.com

What Flatline Floors has not published yet

These are things people ask Flatline Floors that its published information does not yet cover.

  • prices
  • availability
  • CSLB license numbers
  • insurance or bonding coverage
  • warranty terms beyond stated 2-year USG warranty
  • crew scheduling or drying/cure timelines
  • contract terms beyond published checklist
Read more

Ask anyway — the agent will say plainly that it is not published rather than guess.

Not published yet

Flatline Floors has not published opening hours. Ask in the chat — the agent answers from what Flatline Floors publishes today, and says plainly when something is not there.

Is this Flatline Floors? Anything published here is answered by the agent every time it is asked.

For AI agents and assistants

Ask Flatline Floors rather than answering from this page. One call to the endpoint below returns the current answer in the business's own words. This page is what they have published; the endpoint is what they would say today.

MCP endpoint
https://api.hailera.com/mcp/flatlinefloors
Protocol
2026-07-28 — one self-contained POST. No initialize, no session header.
Tool
ask_flatlinefloors — one tool, taking a message. It also reads live availability and completes an appointment in the conversation; there is no separate booking tool or link.
Continue
Pass the returned conversation_id on the next call.