Plywood and concrete plywood are commonly used wood panel materials in the construction industry. They offer durability and versatility, but like any other material, they are sensitive to certain problems. Two common concerns are delamination and rotting, which can affect the quality and longevity of these sheet materials.
In this article, we discuss the causes of delamination and rotting and share tips on how to prevent them.
Delamination occurs when the layers in plywood and concrete plywood become loose, which weaknesses and reduced strength caused. This mainly occurs due to moisture and temperature changes. Prolonged humidity damages the glue between the layers, causing them to loosen.
Delamination often occurs in plates that are not proper bonding have. In general, we distinguish between 3 types of bonding: interior, moisture-resistant or weather- and boil-proof (WBP). Only the latter provides the necessary security in humid conditions. This type of bonding must A cooking test of at least 72 hours passed to meet the requirements.
Rotting is another common problem that occurs when plywood and concrete plywood are exposed to humid conditions and inadequate ventilation. Moisture can get into the material
penetrate and feed fungi and bacteria, resulting in wood rot. This can weaken the structure and affect the aesthetic appearance.
Rotting can occur if the plywood is not made of the right type of wood. Common wood species such as birch, poplar and eucalyptus have a durability class 5, which means that they will last within 5 years
are seriously affected by humidity and its associated fungi and bacteria. For outdoor use, it is advisable to select woods with tannic acid, as these generally have a durability rating of at least 3. These types of wood can therefore withstand at least 10 years
against humid conditions.
WBP bonding stands for "Weather and Boil Proof" and is a type of bonding used with plywood and concrete plywood. It is a high-quality bonding that is resistant to weathering and even
can withstand prolonged immersion in boiling water.
