LVT Subfloor Guide

Can You Lay LVT Over Existing Flooring?

Concrete, tiles, floorboards, plywood, vinyl, laminate, chipboard and more: find out whether LVT can be installed over your existing floor and what preparation may be required before fitting.

Quick answer: LVT can be installed over many existing subfloors, but the surface normally needs to be sound, smooth, flat, clean and dry. The correct preparation matters just as much as the flooring itself, particularly with glue-down LVT where imperfections underneath can show through the finished floor.

What are you laying LVT over?

Choose your existing floor to jump straight to the answer.

What can you lay LVT flooring over?

Luxury vinyl tile flooring can be installed over a wide range of subfloors, but that does not mean LVT should simply be placed directly on top of whatever is already there. The condition and preparation of the surface beneath the flooring can have a major effect on the finished appearance and performance.

Glue-down LVT is relatively thin, which is one of its advantages, but this also means ridges, joints, cracks and other imperfections in the subfloor may become visible through the finished flooring if they are not dealt with correctly.

Below we explain the usual considerations for the most common UK subfloors. Always follow the specific instructions supplied by the flooring, adhesive and subfloor-preparation manufacturers used on your project.

Can you lay LVT over concrete?

One of the most common subfloors for LVT installations.

Yes — with preparation

Yes. LVT can normally be installed over concrete provided the concrete is suitably dry, sound, smooth and correctly prepared.

Concrete is commonly used beneath glue-down LVT because it can provide a solid and stable base. However, simply having a concrete floor does not automatically mean it is ready for vinyl flooring.

Before installing LVT over concrete

  • Check that the concrete is sufficiently dry for the flooring system being used.
  • Investigate cracks, loose areas or damaged sections.
  • Remove contamination such as paint, oil, adhesive residue or debris where required.
  • Correct uneven areas using a suitable floor preparation system.
  • Use the appropriate primer, damp-proofing system or smoothing compound where specified.
Important: newly installed concrete and screeds need adequate drying time. Do not judge moisture levels simply by how dry the surface looks.

Can you lay LVT over floorboards?

Timber floors normally need additional preparation.

Yes — but not usually directly

LVT can be installed over timber floorboards, but laying thin glue-down LVT directly onto traditional floorboards is generally not advisable.

Natural movement between boards and the joints in the timber can affect the finished surface. Floorboards should first be secure, stable and free from excessive movement.

Typical preparation may include

  • Securing loose or moving boards.
  • Repairing damaged timber.
  • Checking for excessive deflection or structural movement.
  • Installing an appropriate flooring-grade overlay where required.
  • Preparing joints and fixing points in accordance with the chosen preparation system.
The objective is to create a smooth, stable surface so the lines between individual floorboards do not transfer through the LVT.

Can you lay LVT over plywood?

Plywood can form an excellent prepared base when correctly specified.

Yes

Yes. Correctly specified and installed flooring-grade plywood can provide a suitable base for LVT.

The plywood should be sound, securely fixed, appropriately conditioned for the environment and prepared in accordance with the flooring system being used.

Things to check

  • The boards are firmly fixed with no movement.
  • Sheet edges and fixing points are correctly treated where required.
  • The surface is smooth and free from contamination.
  • The plywood specification is appropriate for flooring use.
  • The finished base meets the requirements of the adhesive and LVT manufacturer.

Can you lay LVT over ceramic tiles?

Possible, but grout lines and loose tiles must be dealt with.

Often — if suitable

It may be possible to install LVT over existing ceramic or porcelain tiles if the tiled floor is firmly bonded, stable and properly prepared.

One of the biggest concerns is the grout joints. Because LVT is relatively thin, tile joints and surface texture can potentially become visible through the finished vinyl.

The tiled floor should be checked for

  • Loose or hollow tiles.
  • Cracked or damaged tiles.
  • Significant height differences between tiles.
  • Deep or wide grout joints.
  • Contamination, polish or coatings that could affect adhesion.

A suitable preparation or smoothing system may be required to create a continuous smooth surface before the LVT is installed.

Covering a badly tiled floor does not fix the problems underneath it. Unstable tiles should be dealt with before installing the new flooring.

Can you lay LVT over existing vinyl flooring?

The answer depends heavily on what the existing floor actually is.

Sometimes

Sometimes, but an existing vinyl floor should be assessed before using it as a base for new LVT.

The existing covering would need to be stable, firmly bonded and suitable for the proposed installation system. Soft, cushioned, loose, damaged or unstable floor coverings generally do not make an appropriate base for glue-down LVT.

Consider

  • Whether the existing vinyl is firmly adhered.
  • Whether it is cushioned or compressible.
  • Whether joints, embossing or texture may show through.
  • Whether adhesive compatibility has been confirmed.
  • Whether removing the existing covering would provide a better base.
Older flooring warning: some historic floor tiles, sheet flooring and flooring adhesives can contain asbestos. Do not sand, grind, drill or aggressively remove an unknown older floor covering. If there is any doubt, obtain appropriate professional advice or testing before disturbing it.

Can you lay LVT over laminate flooring?

A floating laminate floor is not normally an appropriate base.

Usually no

In most cases, existing floating laminate should be removed before installing glue-down LVT.

Laminate flooring is commonly installed as a floating floor and is designed to move independently of the structural subfloor beneath it. Bonding LVT to a moving surface is generally not an appropriate installation method.

Removing the laminate also provides an opportunity to inspect and prepare the actual subfloor beneath it properly.

Do not assume that because the existing laminate feels solid underfoot it is suitable to become a permanent bonded subfloor.

Can you lay LVT over chipboard?

Common in UK properties but usually requires preparation.

Yes — when prepared

LVT can be installed over suitable chipboard, but the boards and joints need to form a stable and appropriate base for the chosen floor system.

Chipboard can move and react to changes in moisture, and joints between boards can become visible through thin resilient flooring if the base is not prepared correctly.

Check that

  • The chipboard is structurally sound and secure.
  • There is no excessive movement between boards.
  • Moisture damage or swollen edges are not present.
  • The preparation method is approved for the particular chipboard and adhesive system.

Can you lay LVT over OSB?

OSB normally needs an appropriate preparation system.

Possible — prepare first

LVT may be installed over an OSB-based floor, but OSB is not normally a surface onto which glue-down LVT should simply be bonded without further assessment and preparation.

The board type, surface treatment, movement and compatibility with primers, adhesives or smoothing products all need consideration.

A suitable overlay or preparation system may be required to produce the smooth, stable surface needed for resilient flooring.

Can you lay LVT over screed?

A common base for professionally installed glue-down LVT.

Yes

Yes. A correctly installed and properly prepared screed can provide an excellent surface for glue-down LVT.

The screed must be suitable for receiving resilient flooring and meet the relevant moisture, strength and surface requirements before installation.

Before fitting

  • Confirm the screed has reached an appropriate condition for flooring.
  • Check moisture levels using a suitable method.
  • Remove weak surface material or contamination where necessary.
  • Use compatible primers and smoothing products where specified.
  • Ensure the final surface is sufficiently smooth and flat.

Can you lay LVT over underfloor heating?

Many LVT products are compatible, subject to their specification.

Often yes

Many LVT floors can be used with suitable underfloor heating systems, but the flooring and adhesive manufacturers' temperature and installation requirements must be followed.

The important distinction is that the LVT is not generally installed directly onto exposed heating components. The heating system forms part of a properly constructed floor build-up with an appropriate prepared surface above it.

Check before installation

  • That the selected LVT is approved for use with underfloor heating.
  • The permitted maximum floor or surface temperature.
  • Heating commissioning and shut-down requirements before fitting.
  • That the adhesive and preparation products are compatible with the system.
Never guess the permitted operating temperature. Check the technical specification for the particular flooring and installation products being used.

What does an LVT subfloor need to be like?

Regardless of what material is underneath, these are the fundamentals installers are trying to achieve before fitting LVT.

Flat High and low areas can affect the finished installation.
Smooth Ridges, joints and texture may show through thin LVT.
Dry Excess moisture can cause serious flooring and adhesive problems.
Sound Loose, weak or moving areas should be corrected first.
Clean Dust, grease, polish and contamination can affect adhesion.
Stable The surface beneath a bonded floor should not move independently.
Compatible Primers, adhesives and preparation products need to work together.
Properly prepared A good finished floor starts before the first plank is laid.

LVT Subfloor FAQs

Common questions about what you can install luxury vinyl flooring over.

Can you put LVT directly onto concrete?
LVT can be installed over concrete when the concrete is sufficiently dry, sound, smooth and prepared for the flooring system being used. Uneven, contaminated or moisture-affected concrete may require additional preparation.
Can you put LVT directly over floorboards?
Traditional floorboards usually require additional preparation before thin glue-down LVT is installed. Loose boards should be secured and an appropriate smooth flooring surface may need to be created over the timber.
Will tile grout lines show through LVT?
They can. Thin resilient flooring can reveal joints and texture from the surface beneath it, which is why tiled floors often require preparation to produce a continuous smooth surface.
Do I need to remove laminate before laying LVT?
Floating laminate is generally removed before installing glue-down LVT because it is designed to move independently of the structural subfloor. The actual subfloor can then be inspected and correctly prepared.
Can LVT be laid over an uneven floor?
Installing LVT over an uneven floor is not recommended. The base should meet the flatness and surface requirements specified for the flooring system. Appropriate floor preparation may be needed before fitting.
Does glue-down LVT need a perfectly smooth floor?
Glue-down LVT needs a suitably smooth and flat prepared surface. Because it is a relatively thin flooring product, imperfections underneath may remain visible through the finished floor.
Can LVT go over old vinyl tiles?
It depends on the existing flooring and installation system. Older floor coverings should also be treated cautiously because some historic tiles and adhesives can contain asbestos. Unknown older materials should not be aggressively disturbed without appropriate assessment.
Can you use LVT with underfloor heating?
Many LVT products are suitable for use with compatible underfloor heating systems, subject to the flooring, adhesive and heating-system manufacturer's installation and operating requirements.

Preparation matters

The information above is general guidance. The exact preparation required depends on the condition of the existing floor and the particular LVT, adhesive, primer and preparation system being installed. Always follow the relevant manufacturer's technical instructions and use a professional flooring installer where appropriate.