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PVC foam board: uses, pros and cons

A waterproof, termite-proof board for wet areas, and where it falls short.

U-shaped white kitchen with black handle strips, built-in oven, hob, window and marble-look backsplash

PVC foam board is a lightweight, waterproof board made from expanded PVC. It doesn't swell, rot or attract termites, which makes it popular for bathroom vanities, sink units and balcony storage in humid cities.

Here are 10 foam board uses and things to know.

Dark kitchen with fluted walnut shutters, black upper cabinets, black marble island with wine rack and herringbone floor

01Bathroom vanities

Completely waterproof; ideal near basins.

L-shaped kitchen with fluted walnut upper shutters, white handleless base units, glass top cabinets and a double-door fridge

02Kitchen sink unit

A waterproof alternative under the sink.

Render of a loft kitchen with stone walls, a wooden island with bar stools and wine storage

03Balcony storage

Handles rain splashes and humidity.

Open kitchen with a walnut tall unit, grey handleless cabinets, track lights and a dining table with tan chairs

04Utility area cabinets

Near washing machines and drains.

05Wall cladding

Used for moisture-prone wall panels.

06Signage and displays

Common foam board use beyond homes.

07Lightweight

Much lighter than ply or MDF.

08Lower screw strength

Holds screws less firmly; needs special fixings.

09Heat sensitivity

Can warp near high heat; keep away from the hob.

10Finishes

Can be laminated or painted.

Need waterproof cabinets under the sink? Our modular kitchen in Kolkata service picks the right board for wet zones.

PVC foam board vs plywood vs WPC

  • PVC foam board: waterproof and light, but weaker and heat-sensitive.
  • WPC: denser, stronger, also waterproof.
  • BWP plywood: strongest, water-resistant, needs sealing.

Use PVC or WPC in bathrooms and utility areas; BWP ply in kitchens for strength.

Materials and rough cost factors

  • Thickness and density.
  • Brand.
  • Finish.

FAQs

Frequently asked questions

What is PVC foam board used for?+

Bathroom vanities, sink units, balcony and utility cabinets, wall cladding and signage.

Is PVC foam board strong?+

It's lighter and weaker than ply, but strong enough for cabinets with proper fixing.

Is PVC foam board waterproof?+

Yes, it doesn't absorb water or swell.

Can PVC board be used in kitchens?+

Under the sink, yes. Near the hob, avoid it because heat can warp it.

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