Marine Plywood Vs. Multiwood

The comparison between Marine Plywood (IS 710 grade) and Multiwood depends on the application. Here's a detailed comparison across key parameters:

 1. Composition

Marine Plywood (IS 710 Grade):

Made from high-quality hardwood veneers bonded with BWP (Boiling Water Proof) phenol-formaldehyde resin.

Has layers (plies) of wood pressed together in cross-grain structure.

Multiwood:

Not wood-based. It is a uPVC (unplasticized polyvinyl chloride) or polymer-based sheet.

Manufactured using plastic composites and calcium carbonate; doesn’t have any natural wood layers.

🔹 2. Water Resistance

Marine Plywood:

Extremely water-resistant, suitable for high-humidity or coastal environments.

Still, can absorb water over time and needs sealing at edges.

Multiwood:

100% waterproof, termite-proof, and does not absorb moisture.

Preferred in bathrooms, modular kitchens, or damp areas.

Winner: Multiwood (for moisture-heavy environments)

3. Strength and Load-Bearing Capacity

Marine Plywood:

Stronger structurally; better load-bearing capacity.

Holds screws and nails better.

Multiwood:

Not as structurally strong.

Can warp under heavy load or over long spans.

Winner: Marine Plywood (for structural or load-bearing use)

 4. Workability

Marine Plywood:

Works like natural wood. Easy to saw, screw, paint, or veneer.

Multiwood:

Can be cut and screwed, but tends to chip or crack if not handled carefully.

Needs special fasteners in some cases.

Winner: Marine Plywood (for carpentry or detailed finishes)

5. Durability & Lifespan

Marine Plywood:

Can last 15–25 years with proper sealing and care.

Vulnerable to termites if untreated.

Multiwood:

Inert to termites, rust, or rot.

Durable in damp areas but can turn brittle over time if exposed to harsh sunlight.

Tie: Depends on exposure — Marine ply (for strength & finish), Multiwood (for moisture & termite resistance)

 6. Cost

Marine Plywood:

Generally cheaper than Multiwood for the same thickness.

Multiwood:

More expensive, especially for thicker boards.

Winner: Marine Plywood (budget-friendly)

 7. Eco-Friendliness

Marine Plywood:

Uses natural wood, but involves tree felling.

Formaldehyde content can be a concern in cheaper brands.

Multiwood:

Synthetic and non-biodegradable; not eco-friendly.

Winner: Marine Plywood (relatively better for sustainability)

 When to Choose What

Use Case Recommended Material

Modular kitchen in dry zones Marine Plywood (IS 710)

Bathroom cabinets Multiwood

Wall panels/furniture near water sources Multiwood

Beds, tables, wardrobes Marine Plywood

Long-term heavy-duty furniture Marine Plywood

Zero-maintenance outdoor cabinets (shade only) Multiwood

Verdict

Marine Plywood is better for structural strength, finish, long-term use, and custom woodwork.

Multiwood is better for wet areas, low-maintenance needs, and termite-proofing.