Costco sells laminate flooring by the carton on its website, and some listings show the price only at your local warehouse. It’s an easy way to buy a floor, but the listings are short, so it pays to know which specs to check and what the fine print says.
This guide covers what we found on Costco’s site in November 2026 and how to judge any laminate listing there. Costco’s flooring lineup changes often, so check the current listing for anything you’re about to buy.
What Costco Sells in Laminate
Most of the laminate listings we opened on Costco.com were Mohawk Home products. The main line is a 12 mm plank, made up of a 10 mm board and a 2 mm attached pad, with an AC4 rating.
Those listings came in two widths, 7.5 inches and 6.1 inches, both about 47 inches long. They describe a SplashDefense waterproof surface with water-tight joints, a Uniclic click joint and no separate underlayment required. The stated warranty is a lifetime limited residential warranty plus 10 years of light commercial coverage.
A 2024 House Digest review noted that the Mohawk Home laminate sold at Costco is made in the United States.
We also found a Harmonics listing. It shows an attached 2 mm underlayment and a Uniclic locking system, but no AC rating or water claim, and it refers warranty questions to Costco’s customer service.
Costco’s flooring pages also mention professional installation services and a Shaw custom flooring program. Those come with their own terms, so read those listings separately if you’re weighing them against buying cartons online.
How to Judge a Costco Laminate Listing
AC Rating
The AC rating is a durability grade. It comes from a European testing scheme that checks resistance to wear, impact, stains, burns, chair casters and swelling at the edges, and a floor has to pass every test to earn its class.
Lowe’s buying guide, for one, recommends AC3 or higher for most homes and AC4 for heavy traffic, kids and pets. The Mohawk Home listings meet that AC4 bar. If a listing doesn’t show an AC rating, ask before you buy.
Thickness
Look at how the thickness is counted. Mohawk Home’s 12 mm figure includes the 2 mm pad, so the board itself is 10 mm.
Compare board to board. Makers pitch thicker boards as more stable and better sounding, and cost guides note they usually last longer, but thickness doesn’t replace a good AC rating or a flat subfloor.
Core
Laminate cores are typically high-density or medium-density fiberboard, often shortened to HDF and MDF. The Mohawk Home listings we read don’t say which they use, so ask Costco or Mohawk if it matters to you.
Water Claims
A waterproof surface and water-tight joints describe how the top and the seams handle spills. They don’t make the floor flood proof.
Mohawk Home’s own FAQ for this line says the SplashDefense warranty applies to everyday household spills only. Flooding, standing water, leaking pipes, mechanical failure and appliance leaks are not covered.
The same FAQ says the spill protection depends on sealing the room’s perimeter with 100% silicone sealant. It also says not to install the floor in a room with a floor drain or over a floor with a sump pump, and to use a moisture barrier over concrete.
Warranty Terms
Lifetime limited means the coverage comes with conditions. For this line, they include a full 3/8 inch expansion space around the room, the perimeter seal and the right cleaning routine.
Mohawk’s care rules call for a dust mop and an occasional damp mop with plain water, wrung out well. They rule out steam mops, wax, polish, soap, detergents and vacuum beater bars. Costco’s own flooring buying guide also says not to use steam cleaners on laminate.
Keep your receipt and the product details, and save a few spare planks for future repairs.
Which Width to Pick
The two Mohawk Home widths look different on the floor. The 6.1 inch plank gives a narrower, more traditional look, while the 7.5 inch plank shows more grain per board and fewer seams across the room.
Lowe’s buying guide describes planks around 7 to 9 inches as the usual best choice when a subfloor isn’t perfectly level, and planks over 9 inches as best on a nearly level one. Both Costco widths sit at or under that standard range, so either is reasonable on a typical subfloor that’s been checked for flatness.
Where This Kind of Floor Fits
An AC4 laminate with a sealed, water-tight surface suits most of a house.
- Kitchens and breakfast areas, with the perimeter sealed the way Mohawk requires
- Entryways and mudrooms, with walk-off mats to catch grit
- Living rooms, hallways and bedrooms
- Basements that stay dry, over a moisture barrier on the concrete
It’s a poor fit for a room with a floor drain, a basement with a sump pump in the floor, or a full bath where water sits on the floor. In those rooms, a floor built to take standing water is the safer choice.
Before You Order
A few steps save headaches with any boxed laminate.
- Measure carefully and add about 10% for cuts, the waste allowance Angi recommends.
- Check that your subfloor is sound, level and dry. Costco’s buying guide says laminate can often go over an existing floor when those conditions are met.
- Let the cartons acclimate. Costco’s guide suggests 48 to 72 hours, but follow the product’s own instructions.
- Read Costco’s return terms for flooring before you open any cartons.
- Order every carton at once so the planks come from the same batch.
Remember that laminate can’t be sanded or refinished, as Costco’s guide points out. Pick a look and a rating you’ll be happy with for years.
Comparing Costco With Other Options
The Costco laminate listings we found were few, which can make shopping simpler. If you want to compare specs across a wider range, our guide to reading Home Depot laminate specs walks through the same checks line by line. Our laminate installation cost guide covers what a professional install typically adds to the price of the planks.
Quality Installs is a family-owned flooring installer in Glenview, and we source materials for the floors we install from reputable suppliers. Our laminate flooring installation page explains how we plan and install a laminate job.