When you're in the market for 18 mm waterproof plywood 8×4, it's easy to get overwhelmed by the variety of grades (BWR, BWP/Marine) and brands — each with different pricing structures. This guide provides clarity:
- Grade differentiation – BWR vs BWP
- Real-world price ranges across trusted brands
- Cost per square foot analysis
- How to choose the right grade for your project
- Buying tips for online plywood purchases
Understanding the Grades
BWR (Boiling Water Resistant) – ISI:303 Certified
- Made with phenol-formaldehyde resin
- Resists boiling water up to 8 hours
- Ideal for kitchens and semi-wet areas
BWP / Marine Grade (710 Certified)
- Uses high-grade PF resin and hardwood core
- Withstands 72+ hours of boiling water
- Perfect for wet areas like bathrooms, under-sinks, outdoor use
Pricing Insights
- Budget Marine Grade: ~₹50–60/sq. ft (Greenply)
- Mid-tier BWP (e.g., Century, Durian): ₹110–140/sq. ft
- Premium BWP (Oroply Titan, etc.): ₹140+/sq. ft
An 8×4 sheet covers 32 sq. ft, so price per sheet = price/sq. ft × 32.
Example: ₹120 × 32 = ₹3,840.
Which Grade Suits Your Need?
- 💧 Use BWR if your project (e.g., kitchen shutters) isn’t exposed to direct water.
- 🌊 Choose Marine BWP for wet areas like bathroom under-sinks, outdoor cabinetry, or utility areas where water exposure is consistent.
- 🏝️ Coastal or high-humidity environments demand BWP plywood to prevent early damage.
Buying Tips for Waterproof Plywood
- Ensure ISI certification: ISI 303 for BWR; ISI 710 for BWP
- Select a reputable brand; beware of cheap, uncertified sheets
- Confirm price per sq. ft and compute sheet cost
- Ask about warranty details—Titan lines offer up to 30 years
- Opt for calibrated plywood if you're using CNC or precision cutting
- Buy online from brands like Plyneer — get sheets delivered with full documentation and authenticity guarantee
Where to Buy 18 mm Waterproof 8×4 Plywood
Plyneer offers both variants:
- Silver BWR 18 mm – value option for dry and semi-wet zones
- Gold / X BWP 18 mm Marine Grade – premium waterproof, calibrated, lifetime warranties available
All products are ISI-certified, termite-resistant, and delivered in standard 8×4 sheet size.
Final Takeaway
- 18 mm BWR plywood costs around ₹1,800–2,600/sheet
- 18 mm BWP marine plywood ranges ₹2,400–4,300/sheet based on brand & warranty
- Choose based on exposure to water — BWR for limited contact, BWP for guaranteed waterproof performance
- Buy certified plywood from trusted sellers like Plyneer to ensure authenticity and long-term value
