BWR plywood = Boiling Water Resistant
plywood.
Vs
Marine-grade plywood
In
the article, we will compare and differentiate between BWR grade and Marine
grade plywood.
In
our previous article, we compared BWR plywood with MR grade plywood and
concluded that waterproof BWR is
better than MR grade
BWR Grade Means Boiling Water Resistant Plywood.
It
is a good quality waterproof exterior quality plywood that is suitable for most
home furniture needs. Most interior designers and carpenters prefer to use BWR
plywood to make kitchen cabinets and other kitchen furniture.
Indian
Standards quality specification for BWR grade is specified in document IS:303
Marine Grade plywood
Marine-grade plywood is of better quality than BWR and it is used in conditions that
ensure long-term exposure to extreme weather conditions such as plywood
submersion. It is a great choice for building ships, boats and other marine
applications.
What
makes marine plywood so strong and water-resistant is the use of high-quality
wood veneers and non-stretchable (insoluble) phenolic resins to make plywood.
The adhesive phenol formaldehyde is actually a synthetic plastic resin, which
greatly enhances the waterproofing quality of marine plywood. In BWR grade ply,
on the other hand, extensions are added to the resin and diluted before using
it to glue the ply together.
Also
Read: BWR VS BWP Grade Plywood |
Difference Between Bwp & Bwr Plywood | Lceted
The
use of waterproof BWR quality exterior plywood for home furniture needs is
generally considered adequate, and expensive marine grade plywood is generally
not used for such purposes.
Indian standards
specification for Marine plywood is detailed in document IS:710
The
main differences between BWR Plywood and Marine Plywood are summarized in the
table below.
BWR grade plywood |
Marine-grade
plywood |
lesser
strength and quality (comparatively) |
It
is stronger and has better water resistance. |
BWR
grade is a waterproof plywood |
Better
waterproofing. Can be submerged in water for at least 72
hours without damage. |
Economical
(comparatively) |
High
in cost |
The diluted phenol-formaldehyde adhesive is used to glue plywood together. |
formaldehyde
resin adhesive is used to glue plywood together. |
Grade: Exterior grade (used for outdoor use) |
Grade: Exterior grade (used for extreme weather conditions) |
Used
for making kitchen furniture that is
likely to get wet |
Not
generally used for making home furniture. Used in boat-building and other
marine applications. |
FAQs
Is marine ply and BWR ply the same?
NO,
Both Marine Plywood and BWR have their own characteristics. Therefore, before
buying plywood, it is very important to know about the applications and
properties of plywood. Marine plywood and BW plywood are available in
different thicknesses from 6mm to 32mm.
Which plywood is best for waterproofing?
Marine-grade
plywood has excellent waterproofing compared to any plywood. As the name
implies, marine-grade plywood is a great choice for building ships, boats and
other marine applications.
Is BWR ply waterproof?
Boiling waterproof plywood
has high resistance to water and is considered completely waterproof.
Also Read: BWR Grade Vs Mr Grade Plywood | Difference Between Bwr & Mr Plywood
Is Marine ply stronger than normal ply?
Comparatively, YES
How long will marine grade plywood last?
Depending on the quality of the plywood and how the plywood is used, marine-grade plywood can last from 5 years to 25years.
Also
Read: What Is Fire Retardant
Plywood? | Uses | Lceted
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