What Flooring Mistakes Should You Avoid?
Most flooring failures trace to installation errors, not material defects. Here is what to avoid.
Skipping Subfloor Preparation
Installing flooring over an uneven, squeaky, or wet subfloor: the most common and most costly flooring mistake. Soft spots in the subfloor create soft spots in the new floor. High spots in the subfloor create humps visible in a rigid LVP or tile floor. A wet subfloor causes hardwood and laminate to buckle and LVP to lift at the seams. A proper subfloor assessment (leveling, moisture testing, squeak elimination) before installation is not optional — it is the foundation of a flooring installation that lasts. A flooring installer who is willing to skip this step is not providing a quality installation, regardless of how good the material they are installing is.
Not Acclimatizing Hardwood
Installing hardwood without allowing it to acclimatize to the home’s temperature and humidity for 3 to 7 days causes the boards to expand or contract after installation. Boards that were installed too wet (higher moisture content than the home): dry out and gap significantly, leaving wide spaces between planks. Boards installed too dry: absorb moisture from the home and expand, causing buckling or cupping. The acclimatization requirement is not optional for solid or engineered hardwood — a rushed installation that skips this step will show the consequences within weeks to months.
Choosing a Thin Wear Layer on LVP
A 6-mil wear layer on LVP: the minimum for residential use in a low-traffic room. In a kitchen, entryway, or any high-traffic area: the wear layer is scratched through within 3 to 5 years, revealing the print layer below. A 12 to 20-mil wear layer: appropriate for residential high-traffic areas. Commercial grade (28 mil): for high-traffic residential or for pet households. The wear layer thickness is not always prominently displayed in the product marketing — ask specifically for the mil rating before purchasing any LVP.
Working With a Contractor on This Project
Getting the right outcome on any home services project starts before the work begins. A few consistent practices make the difference between a smooth project and a frustrating one.
Get at least two or three quotes. A single quote gives you no basis for comparison. Two or three quotes reveal the market rate for the work, expose scope differences between bidders, and let you assess contractor communication quality before any commitment is made. The lowest bid is not automatically the best value if the scope is thin or the materials are underspecified.
Ask for licenses and insurance before work starts. Verify current general liability insurance and, for any work involving workers on your property, workers compensation coverage. Licensing requirements vary by state and trade; confirm the specific requirements in your jurisdiction. A licensed contractor who carries appropriate insurance protects both parties if something goes wrong during the project.
Get the scope in writing. A written proposal that specifies materials, labor scope, timeline, what is included (permits, cleanup, disposal), and warranty terms is the foundation of a professional engagement. Verbal agreements on any of these points invite misunderstanding. For any project over $500, written scope is non-negotiable.
Clarify the payment schedule upfront. A reasonable payment schedule ties major payments to project milestones: a deposit at signing, a payment at material delivery or project start, and a final payment at completion after a walkthrough confirms satisfaction. A contractor who requires full payment upfront before work begins is a red flag in any trade.
Making a Confident Decision
The information in this article is designed to help you ask better questions of the professionals you work with, evaluate their answers with more confidence, and understand the decisions involved in this type of home services project. It is not a substitute for professional assessment of your specific home.
Every home is different. Roof slopes, local weather, tree exposure, soil conditions, and existing system condition all affect what the right solution is for your specific situation. The general principles here apply broadly, but a professional who assesses your home in person will give you guidance that accounts for the details that general articles cannot.
When you are ready to move forward, getting at least two or three quotes from licensed, insured, local contractors is the most important practical step. It lets you compare approaches, assess contractor quality, and confirm that the solution proposed matches your specific situation and budget.
Flooring Cost at a Glance
Sheet vinyl: $2 to $5 per sq ft installed. LVP or LVT: $3 to $8 per sq ft, the most widely installed residential flooring type. Laminate: $3 to $8 per sq ft, not waterproof. Carpet: $2 to $8 per sq ft for most residential grades, 7 to 15-year service life. Engineered hardwood: $6 to $12 per sq ft, more stable than solid, appropriate over radiant heat. Solid hardwood: $8 to $15 per sq ft, refinishable over 50 to 100 years, adds the most home value. Ceramic or porcelain tile: $6 to $13 per sq ft installed, waterproof and durable, standard for kitchens and bathrooms.
A 500-square-foot main living area costs $1,500 to $7,500 depending on material. A whole-home project covering 1,500 sq ft runs $4,500 to $22,500. Old flooring removal adds $0.50 to $2.00 per sq ft. Always get at least two written quotes specifying the material by manufacturer, product name, and wear-layer thickness so bids are directly comparable.
Frequently Asked Questions
Skipping subfloor preparation (leveling, moisture testing, squeak elimination). Not acclimatizing hardwood (3 to 7 days required). Installing a floor with an inadequate wear layer (6 mil is too thin for high-traffic areas). Not maintaining the expansion gap at walls (causes buckling). Using the wrong adhesive or no adhesive for a glue-down installation.
A floor without an expansion gap buckles when the material expands from heat or humidity increases. The planks have nowhere to go and push against each other and the walls, creating ridges and humps. This is a permanent installation defect that typically requires removing and reinstalling the entire floor with the correct gap. Always confirm the expansion gap is being maintained during installation.
LVP: most manufacturers require installation in temperatures above 65 degrees F (the material needs to reach its final dimensions before installation). Hardwood: installation below 60 degrees F is not recommended (the wood is in its driest, most contracted state and will expand in the home, causing buckling). Tile: mortar cure requires temperatures above 50 degrees F. Heat the space to the normal living temperature before and during flooring installation.
Floor flatness standards: most flooring manufacturers specify that the subfloor must be flat to within 3/16 inch over a 10-foot span (or 1/8 inch over a 6-foot span). Ridges or dips beyond this tolerance cause: visible waves in LVP (which is rigid and bridges low spots and contacts only high spots), cracked grout in tile, and squeaking in hardwood. A simple way to check: slide a 10-foot straightedge across the subfloor and look for gaps underneath it.
It depends on the product. Some LVP comes with an attached underlayment (a foam or cork layer pre-attached to the back of the plank). For these products: do not add additional underlayment (the total thickness can cause locking mechanism failure). For LVP without attached underlayment: a 2 to 3-mm foam underlayment improves sound attenuation, adds slight cushioning, and accommodates minor subfloor irregularities. Never use more than 3mm total underlayment under a floating LVP floor.