Does 5mm LVP need underlayment?

Author: scraper  |  Last update: Tuesday, August 4, 2026

Yes. Concrete subfloors often present moisture issues that can compromise the integrity of LVP flooring. A rubber underlayment from Dura Undercushions acts as a barrier from bacteria such as mold and mildew, protecting your flooring from potential damage while also providing sound dampening benefits.

Is 5mm thick enough for LVP?

What is the standard thickness range for luxury vinyl plank flooring? Most LVP planks range from 2mm to 8mm in thickness. What thickness is best for high-traffic areas? Floors between 5mm and 7mm typically perform best in busy spaces.

What is the thinnest underlayment for LVP?

Thicker isn't always better when it comes to LVP underlayment. Many manufacturers specify a maximum thickness (often around 1.5mm–2mm) to ensure the floor's locking system remains tight and stable. Too much cushion can cause joint separation over time. 1mm–1.5mm: Best for floors with pre-attached padding.

What happens if you don't put underlayment on LVP?

If unprotected, moisture can build up underneath your laminate flooring and cause warping of the planks.

What thickness underlay for LVP flooring?

Too much cushioning can cause the planks to flex or unlock. Most LVP works best with underlayment that is 1–1.5 mm thick.

Do I Need Pad Under My Vinyl Plank? and 4 Other COMMON ?'s Answered

Is 5mm underlay too thick?

We would recommend an underlay of 3 – 5mm for laminate flooring. It should be at least 3mm thick to provide comfort and ground levelling properties. But, it should be no more than 5mm thick. If it's any thicker, you could experience problems with the laminate's locking system.

What mistakes should I avoid when installing LVP?

15 Mistakes to Avoid When Installing Glue Down Vinyl Plank Flooring

  • Rushing the Prep Step. ...
  • Skipping Acclimation. ...
  • Using the Wrong Adhesive. ...
  • Poor Adhesive Application. ...
  • Not Paying Heed to Expansion Gaps. ...
  • Poor Plank Layout and Pattern Planning. ...
  • Poor Cutting Techniques. ...
  • Not Confirming Levelness During Installation.

Can LVP go directly on subfloor?

If your subfloor is smooth, clean, and dry, LVP can often be installed directly over it without any additional padding. Uneven surfaces, however, might require a leveling compound or an underlayment to ensure the planks lie flat.

Can mold grow under vinyl plank flooring on concrete?

Short answer: yes, mould can grow under vinyl flooring — but only when moisture gets trapped between the planks and the subfloor. Vinyl itself is non-porous, so the planks don't host mould.

What are signs I need underlayment?

Common Signs of Failing Underlayment

  • Cracked or displaced tiles or shingles.
  • Ceiling stains or discoloration.
  • Soft spots on the roof deck.
  • Musty odors from attic moisture.
  • Increased attic temperatures.
  • Visible sagging or warping along rooflines.
  • Tiles blowing off more frequently during storms.

Is thicker LVP better than thinner?

Yes. Thicker planks tend to absorb more sound and feel more cushioned underfoot—especially important in bedrooms, upstairs areas, or for families with kids or pets.

What's the best underlayment for LVP flooring?

Felt is a popular underlayment choice, offering better sound control than foam. With foam, you also have the option to choose an attached vapor barrier, and it provides better insulation than foam and cork.

Is 1/2 plywood thick enough for a subfloor?

1/2" plywood is too thin for most subfloor applications and will flex or sag, especially if joist spacing is 16 inches or more. This can lead to squeaky floors and structural issues. -> The minimum recommended is 5/8" plywood, but 3/4" is preferred for strength and long-term durability.

Is 5mm too thin for flooring?

While there might be concerns about 5mm Luxury Vinyl Flooring being too thin, its durability depends more on the wear layer than the overall thickness. For example, a 5mm flooring option with a 0.5mm wear layer provides ample durability for most residential applications.

Is 5mm vinyl plank flooring good?

With its waterproof properties, scratch resistance, and easy maintenance, 5mm lvp is a low cost and ideal thickness that is a practical and durable flooring choice for many homeowners.

Which is better, 6 mil or 22 mil vinyl plank flooring?

6–12 mil wear layers are best for light residential use, guest rooms and low-traffic areas. 12–20 mil is ideal for busy homes with kids and pets, your everyday family use. 20+ mil is where you enter light commercial territory, rental properties, small shops, and offices.

What color floors are in for 2026?

Warm Neutrals and Earthy Flooring Color Palettes

Shades such as honey, caramel, chestnut, and natural oak bring depth without overpowering your décor, and they pair naturally with clay, terracotta, sage, and the muted greens showing up in paint trends and furniture.

When not to use underlayment?

When Underlayment is Not Necessary for Laminate Flooring

  1. 1 Padding is already Attached to the Plank.
  2. 2 Subfloors are in Good Shape.
  3. 3 Moisture Won't Be a Problem.
  4. 4 You Don't Mind a Little Noise.
  5. 5 Budget is a Big Concern.

Does underlayment thickness matter?

The thickness of underlayment seems to be the question that most customers struggle with. That's because with underlayment the thickness isn't the most important consideration. Other factors like type, sound ratings, and density matter just as much, if not more than the thickness.

What are common vinyl plank mistakes?

Preparation Mistakes That Lead to LVP Installation Failure

Any uneven spots, old adhesive, or leftover debris from an existing floor can transfer through luxury vinyl or stress the locking system. The result is a floor that moves, clicks, or separates. Moisture conditions matter as well.

Can I use a Swiffer on vinyl plank floors?

Yes. Both dry and wet Swiffer mops are safe to use on vinyl plank, as long as you're using cleaning pads that don't leave behind residue. Just avoid soaking the floor.

What is the life expectancy of vinyl plank flooring?

Generally speaking, vinyl sheet flooring will last anywhere from 10 to 20 years, while vinyl plank and tile flooring will last 15 to 20 years. The thickness of its wear layer vastly impacts vinyl flooring's lifespan, so pay attention to this detail when purchasing your flooring.

What to put between subfloor and LVP?

Underlayment is a thin layer of material placed between the subfloor and your LVP flooring. Though often hidden, it plays an essential role in creating a smooth, quiet, and stable surface. Think of it as the unseen foundation that enhances comfort and protects your investment.

How much will it cost to install 2000 sq ft of vinyl planks?

Vinyl Plank Installation Cost

Materials: $2-3 PER SQ. FT. Labor: $2-3 PER SQ. FT.

Does subfloor have to be perfectly level for LVP?

No subfloor is perfectly level, but any signs of unevenness and high or low spots must be remedied. Please follow these requirements: Subfloor unevenness cannot be greater than 3/16 of an inch over a 10-foot span or 1/8 inch over a 6-foot span.

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