Building sealant material
Buildings constitute the majority of our built environment, from residential homes to complex multi-storey commercial and industrial developments. All of these structures require a variety of components and materials to ensure the building itself is both structurally sound and safe for its occupants. One of the most important of these components is a sealant. A building sealant comprises of an elastic material that is applied to a joint or surface to form an impenetrable seal against air, moisture, and other environmental elements.
Building sealants, when professionally applied and maintained, provide an effective protection against water infiltration and temperature fluctuations, while also improving energy efficiency by reducing unwanted heat and cold transfer. They are also one of the most versatile, cost effective and long lasting materials available for protecting a building envelope from the elements.
In order to insure the quality of a building sealant, the material used must possess certain characteristics: adhesion to the surface, durability, elasticity, water resistance, flexibility and compatibility with other materials used in the building.
Polyurethane sealant is one of the most popular materials used as a building sealant due to its excellent adhesion properties. This sealant has the flexibility to accommodate the constant expansion and contraction of a building and can expand or compress without cracking or losing the original seal. Polyurethane is also weatherproof, UV-resistant, fire-resistant and highly durable, making it an extremely low maintenance choice that can last for many years.
Silicon sealants are another popular option, particularly in residential applications. Silicon provides a strong seal that is durable and flexible, which allows for movement and expansion of the joint. Silicon sealants are typically low in cost and easy to apply, providing a viable solution for a range of applications.
Another increasingly popular choice for building sealant is a hybrid of both polyurethane and silicon. Hybrid sealants offer even more strength and durability by combining the best characteristics of both materials.
An important aspect of applying an effective building sealant is ensuring the individual materials used are compatible with one another and the environment. Acrylic sealants are good for external applications and create a strong seal that is easy to manipulate with a variety of tools. Acrylics are fast drying and require minimal maintenance.
For internal applications, a sealant such as butyl caulk can be used. Butyl is a non-hardening rubber based material that is extremely waterproof, providing superior insulation against air and water infiltrations.
No matter which type of sealant material is chosen, proper installation and maintenance are paramount. Sealants should be regularly inspected and tested to ensure the seal is still intact and adhering to the different materials used in the building envelope. It is also important to make sure the chosen building sealant is warranted, certified, and that the manufacturer or supplier has a history of providing good quality products. A professional contractor should carry out the installation process, thus ensuring a building envelope is properly protected.
Building sealants are one of the most critical components for protecting a building envelope against air and water infiltration, as well as temperature transfer. By making sure the chosen sealant has the correct properties and is applied and maintained properly, buildings can be protected from the elements over a long period of time.