Short Answer
The grade is about the glue, not the wood. MR (IS 303) resists humidity, not standing water — dry furniture only. BWR resists repeated wetting — the minimum for kitchens and bathrooms. BWP / 710 (IS 710) passes a 72-hour boil — the marine-grade top, and the one most often faked. An engineered NFC board has none of this ladder: one spec, under 1% water absorption (IS 2380), for every interior use.
Every plywood shop throws four or five grade names at you and lets you feel confused enough to take their recommendation. Here is the plain-language version so you walk in knowing what your rooms need — and what you are being asked to pay for. WAZWOOD Board — Designed For Legacy.
What the grades mean
All plywood is wood veneers stacked in layers. What changes between grades is the adhesive holding those layers, and how much water it can take before the layers let go.
| Grade | Standard | Glue | Handles | Use it for |
|---|---|---|---|---|
| MR | IS 303 | Urea-formaldehyde | Humidity, not standing water | Dry bedroom furniture, upper-floor wardrobes, TV units |
| BWR | IS 303 | Phenol-formaldehyde | Repeated wetting, splashes | Kitchens, bathrooms, ground-floor wardrobes |
| BWP / Marine | IS 710 | Phenol-formaldehyde (higher spec) | 72-hour boil, no delamination | Heavy wet zones, semi-exterior, budget-no-object kitchens |
| "710" | IS 710 | Same as BWP | Same as BWP | Marketing shorthand for marine grade — verify the licence |
Two things the grade does not tell you: the core quality (gaps, filler species) and the termite treatment. A high grade with a gappy core is still a bad sheet — which is why the five physical checks matter more than the stamp.
Which grade for which room
- Kitchen carcass and shutters — BWR minimum, BWP if budget allows. This is the room that fails first. See the kitchen board guide.
- Bathroom vanity — BWP / 710, or don't use plywood here at all.
- Ground-floor or basement wardrobe — BWR, because of rising damp and termites. Upper-floor dry wardrobe — MR is usually fine.
- Coastal city (Surat, Bhavnagar, Jamnagar, Gandhidham) — go one grade up from what the room would need inland; salt humidity is relentless.
- Wall panelling and false ceilings — MR in dry areas; fire behaviour matters more than water here, so a fire-rated board is worth considering.
The price gap — and the catch
Roughly, BWR runs 20–35% above MR, and genuine BWP / 710 runs 30–60% above BWR. That premium is real when the glue is real. The catch is that the grade with the biggest premium is also the easiest to fake — a dipped commercial sheet costs the dealer almost nothing and sells at 710 money. Industry estimates put the "got the grade I paid for" rate at about a third.
Where the grade ladder stops helping
Even the top grade is still organic wood veneers and a glue line. It still moves with humidity, the treatment still wears off, and you still cannot see the core. The grade ladder is a way of managing a material's weaknesses, not removing them.
An engineered NFC board vs plywood comparison makes the alternative clear: one specification for all interior use, under 1% water absorption in 24 hours (IS 2380), screw holding above 1900N, structurally termite proof, fire retardant to IS 1734. No MR / BWR / BWP call to get wrong, and no grade for a seller to quietly move you down. For Gujarat projects specifically, the Gujarat guide covers the climate-by-climate version.
