Difference Between Commercial Grade Plywood & Marine Grade Plywood

When we are buying a plywood for our home or office furniture it is quite important for us to know the exact requirement of which type of plywood we should use. There are varieties of plywood available in the market and they mainly differ into their quality of strength, water resistance, moisture resistance and price. So it becomes necessary for us to know the details and choose the right set of plywood for furniture use. Considering the market leader, commercial grade which is often mistaken as water proof plywood thanks to its moisture resistance and marine grade plywood are widely use. Below given are the main differences between those two grade of plywood.

Commercial Plywood	Marine Grade Plywood
Commercial plywood is also known as MR or moisture resistance plywood. However, being moisture resistance is not same as being waterproof and this type of plywood can only withstand some amount of moisture and humidity in environment.	Marine Plywood on the other hand is completely waterproof plywood and it is specifically used for the purpose of high water exposure.
Indian standard for Commercial ply is detailed in document IS:303	Indian standard for Marine plywood is specified in document: IS:710
The adhesive used for bonding the plies together is Urea formaldehyde.	Unextended phenolic resin is used for bonding the plies together. Unextended means undiluted. Phenolic resin is a synthetic plastic resin made from phenol formaldehyde and it makes Marine plywood completely waterproof.
Commercial plywood is most commonly used in the making of home and office furniture, and interior decoration work such as paneling, partitions and the like.	Marine plywood is used for building boats and ships, and any other applications in which the plywood is sure to get a large amount of exposure to water.
Cheaper compared to Marine plywood.	It is a lot costlier than Commercial ply.
Its strength is weaker compared to the strength of Marine ply.	It is much stronger than Commercial grade plywood because of the superior wood and glues used in its manufacture.