Moisture is the main factor to keep in mind when choosing plywood for furniture and interior use. Changes in humidity and sporadic exposure to moisture occur in kitchens, cupboards, utility spaces, bathrooms, and other places. Moisture-resistant plywood, or MR plywood, is produced in such a way as to withstand such conditions better than standard plywood made for indoor use. Knowledge about moisture resistance and its characteristics will help customers choose the most appropriate material for their needs.
What Is MR Plywood?
In simple terms, MR plywood is a kind of plywood that is made to have some resistance to moisture and humidity in the room. It is mainly used in furniture, cabinets, partitions, wardrobes, and other processes where no constant humidity is present.
Nevertheless, MR plywood should not be mistaken for waterproof plywood. The term moisture-resistant plywood means that this type of plywood can survive some humidity and absorb a limited amount of moisture, but it should not be considered workable when there is constant contact with water or when it is completely wet.
How Moisture Affects Plywood
Once moisture comes into contact with plywood, it absorbs water present in the air or humidity in the room. The high degree of moisture in the room will contribute to the plywood getting swollen and possibly damaged.
The scale of the damage depends on how durable the plywood in question is and where it was installed. Using the right grade of MR plywood will help decrease the likelihood of it being damaged due to moisture.
Role of Adhesive Bonding
The adhesive between veneer layers is essential when it comes to moisture resistance. Excellent bonding keeps layers bonded even when plywood is exposed to humidity and moisture.
Poor bonding increases the chances of peeling or delamination. Hence, buyers should ensure that they look into the grade of the plywood and its bonding instead of choosing plywood based on its appearance or pricing.
Situations When MR Plywood Is Suitable
MR plywood is generally suitable for a lot of applications where the interior is relatively dry. For instance, wardrobes, bedroom furniture, office furniture, partitions, bookshelves, and cabinets placed far away from sources of water will benefit from the moisture-resistant properties of MR plywood.
This kind of wood may be used for kitchen furniture, provided that the locations are not badly exposed to water. However, cabinetry directly under the sink or close to any pipes may require more moisture-resistant plywood.
MR Plywood Is Not Completely Waterproof
One of the biggest misconceptions linked with MR plywood is that people tend to think of it as entirely waterproof. In reality, MR plywood is made with moisture resistance in mind, but not for continuous water exposure.
If the plywood is exposed to standing water, continuous splashes, remains wet for a long time, or becomes exposed to contact with water, another waterproof or more performant plywood may be needed. The correct grade according to the environment will help avoid premature problems.
Importance of Core Construction
Moisture resistance is just one of the many components of plywood quality. The core construction is also important for performance.
A well-built core should include well- bonded veneer layers and should not feature too thick gaps inside. Buyers need to scrutinise plywood edges for loose layers, big voids, and signs of separation.
Good core construction can improve performance during cutting, drilling, fastening, and installation.
Edge Protection Matters
Even moisture-resistant plywood needs to be protected during installation. Cut edges, joints, screw holes, and other exposed parts can become weak points that will let moisture in.
Sealing and finishing will allow reducing moisture penetration and help plywood last longer. This is especially important in places like kitchen cabinets and utility furniture where water exposure is possible.
Choosing the Correct Grade
The right plywood grade should be chosen according to real project conditions. Before purchasing, think about humidity, how often the wood will get wet, load capacity, place, ventilation, etc.
Royale Touche is one of the manufacturers that provide various plywood options for interior needs, which lets customers compare various product features to make the best plywood choice according to the intended use of this material.
Conclusion
Knowing how moisture resistance works regarding MR plywood can help customers make better decisions for interior projects. MR plywood can offer good protection against humidity and small water exposure, which makes it a great choice for many furniture pieces and cabinets. Nonetheless, one cannot treat it as waterproof. By paying attention to exposure, glueing, and other key points, buyers will be able to find plywood that works perfectly in their environment.
