VEVOR 3mm Floor Underlayment, 400 sq. ft: features, specs and who it suits

The VEVOR FELT30-5 is a roll-form floor underlayment for floating floors. It is a thin layer that goes between the subfloor and the new flooring, and it combines a recycled-fibre cushion with a plastic film that works as a vapour barrier. The pack contains two rolls of 200 sq. ft each, for 400 sq. ft in total.

What an underlayment does

Floating floors, such as laminate and click-together vinyl or engineered wood, aren't fixed to the subfloor. Without a layer beneath, they can sound hollow underfoot, and small dips in the subfloor can show through. An underlayment adds a little cushion, evens out minor imperfections and cuts some of the noise. It isn't a substitute for levelling a badly uneven floor.

Fibre layer and sound

VEVOR describes the main layer as recycled fibre, 3 mm thick, and says it offers soundproofing. It's meant to reduce the hollow sound of a floating floor and dampen footsteps and furniture movement. Thicker underlayments typically absorb more, but many floors have a maximum thickness the flooring maker allows, so check what your flooring requires.

The vapour barrier

The surface has a PE film, which VEVOR describes as a waterproof layer and a vapour barrier. It is meant to stop moisture rising from the subfloor, which can cause flooring to swell or warp. The need for a barrier depends on the subfloor. Concrete slabs typically need one, while a wood subfloor over a heated room may call for different advice, so follow the flooring maker's instructions. The film is not a cure for a wet slab or a leak.

Roll size and coverage

Each roll covers 200 sq. ft (18.6 m²) and measures about 732 inches by 39.4 inches (18.6 m by 1 m) at 3 mm thick. VEVOR says the large rolls cut installation time and reduce waste. The two rolls together weigh about 47.8 lb, so moving them is manageable.

Installing it

Tape along the seams is built in to help you join neighbouring strips without gaps. The material is described as easy to cut and trim with ordinary tools, so no professional equipment is needed. In general, you roll it out across the room, butt the edges together, seal the seams as the instructions describe, and then lay the flooring on top.

Compatible floors

VEVOR lists vinyl, laminate and wood floors of the layered, floating type. Some flooring has an attached underlayment already, and doubling up can void a warranty, so read the flooring instructions first.

Who it suits

It suits homeowners and installers laying a floating floor over a flat, clean subfloor, especially where sound or moisture is a concern, and larger rooms where a 400 sq. ft pack avoids many small purchases.

What to check before you buy

• Floor area: measure the room and allow for offcuts and overlap. The pack covers 400 sq. ft.
• Flooring requirements: confirm your flooring maker allows a 3 mm underlayment and a vapour barrier.
• Subfloor: check it is flat, clean, dry and suitable. Concrete may need moisture testing.
• Existing underlayment: check whether your flooring already has one attached.
• Sound rules: apartments and condos often have noise requirements, so check any building rules.
• Tools and tape: confirm what you need for cutting and sealing, as the instructions describe.

The short version

• A 3 mm recycled-fibre underlayment with an attached PE film vapour barrier.
• Two rolls of 200 sq. ft each, 400 sq. ft in total.
• Taped seams and easy cutting without professional tools.
• Made for floating vinyl, laminate and wood floors.
• Intended to reduce hollow sounds and block moisture from below.

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