Benefits of Pre-Engineered Buildings and How to Insulate Them
From small businesses to large heavy machinery industries are choosing pre-engineered buildings over concrete buildings. The reason is very simple, they are easy to construct and are cost-effective. A pre-engineered building is designed by using best-suited raw materials depending on the structural and aesthetic requirements. That is why they offer robust and strong structural designs suiting various industrial needs. In this article we will discuss the following points:
- What is a pre-engineered building?
- Benefits of using pre-engineered buildings.
- What are the thermal insulation techniques for insulating pre-engineered buildings?
What is a pre-engineered building?
Pre-engineered building (PEB) are custom computer-aided designs which are simply engineered metal buildings. These buildings are easy, fast and cost-effective to develop. Pre-engineered buildings are steel structures which are built over a structural concept of having wall cladding, roof sheeting, primary framing system, secondary framing system, and accessories.
PEB is best-suited for construction sites or large industries or manufacturing units. It is also used in earthquake-prone areas to build the houses.
Benefits of Using Pre-Engineered Buildings
There are many benefits of using pre-engineered buildings over concrete buildings, few of them are as follows:
Less Construction Time:
The use of high-quality steel, tapered build-up sections, light gauge steel section, etc. makes the overall process extremely light weighted and cost-effective. Apart from this, the pre-engineered building designs are computerized design programs. Using automatic machinery for welding, multi-cutting torches, etc.in the production line to fasten the procedure of construction. These buildings take 50% less time than usual.
Pre-engineered buildings are easy to construct and are lighter in weight as they are 30%-40% lighter than conventional steel structures.
The building design after construction is expandable for the future needs or additional requirements. The modification or changes in the physical design like height or width are easily changeable, unlike concrete buildings.
High- Quality Assurance:
As the production line is highly automated and under great supervision, thus, the quality of products is assured.
This is the exclusive feature of a pre-engineered building. As they are energy efficient, they save up to 70% of energy consumption, thus reduces electricity expenses.
What are the thermal insulation techniques for insulating pre-engineered buildings?
To make the metal building energy efficient it is important to create a thermal barrier and air barrier. It is unavoidable to prevent the temperature stability if there will be heat transfer through the walls, roofs/lofts, ceiling, vents, etc. Thus, it is important to provide the heat insulation to the buildings. Metal building insulation provides a barrier to exterior sounds, heat, dust, and moisture hence improves the energy efficiency of the building.
There are many thermal insulation materials available in the market which offers high insulating characteristics. But when we talk about pre-engineered building insulation then there are two main insulating materials, that is:
Fiberglass provides an excellent insulation to the pre-engineered buildings. It provides insulation to thermal and acoustical for walls, roofs, and ceilings. Fiberglass comes in many forms like batt, loose-fill, and roll form. Fiberglass can be made from recycled glass and it offers insulation to diverse parts of the building.
Rock and mineral wool insulation provides high resistance to fire and is used to the insulated floor, ceiling or walls. Another fiber insulation product – Cellulose insulation is used in a loose-fill form to insulate attics, walls, and floors. Cellulose have high resistance to air leakage thus, provides better roof insulation, under deck roof insulation, etc.
Polyurethane and Polyisocyanurate have high R-value, thus are better insulating materials. Polyurethane foam is primarily used to block the air leakage and insulate efficiently. These foaming products are less polluting and harmful to the environment and offer cost-effective solutions.
Insulating Techniques for Pre-Engineered Buildings
Steel or metal buildings are incapable of protecting from the outside climatic conditions. Thus, supportive insulation materials are required to enhance the thermal stability. In general, there are four insulating techniques that are used to protect the pre-engineered buildings.
Batt and Blanket Insulation:
Batt insulation is inexpensive and offers effective wall insulation. It consists of rock wool or fiberglass processed to form a mineral fiber. Batt and blanket insulation are used for walls, floor, ceiling insulation. They have an R-value of R-3 per inch.
It is perfect insulation techniques to block the air leakage and reduce unwanted noise from outside. It wills every corner and space in the cavities thus, provides effective thermal insulation. Loose-fill insulation consists of loose fiber pallets or fibers and is blown into the building cavities with an equipment. The R-value lies between R-3 to R-4 per inch. This insulating technique can be a little expensive than other techniques.
Spray Foam Insulation:
It provides a perfect floor, ceiling, and wall insulation. With the help spray technique, liquid form of polyurethane is sprayed on to the wall or ceiling or floor. The mixture expands as it is sprayed and then convert into solid air-filled cells of plastic. This technique is advantageous to buildings having shaped designs or some complex structures.
Reflective Foil Bubble Insulation:
This is the most effective form of thermal insulation technique. It provides a dry, clean and easy installation of the insulation material. Reflective foil bubble insulation sheet provides a barrier to moisture, radiation, reflects heat, and dust. Bubble insulation sheets give roof insulation offering temperature stability in the building during the change in the environment.
It reflects 90% – 95% of radiant heat and offers waterproof insulation. The reflective foil bubble insulation sheets are strong, light weighted and flexible.
Proving roof insulation, heat insulation or any other insulation to your pre-engineered building entirely depends to the requirements for which the building will be required and on the climatic conditions of the region.Thus, it is important to consult insulation constructor or thermal insulation providing service companies for better guidance. In the market, there are many insulation materials and insulating techniques are available. Thus, depending on your business requirements or personal demands, choose the perfect insulation technique and material for your pre-engineered building.