Heat Transfer

Effectively controlling temperature in a steel building requires insulation to be present along exterior walls and roof. When a temperature differential is present in an enclosed steel building, heat will work from warmer areas to colder areas until the temperature in the building has stabilized. At the point of thermal stabilization, the cooler (and heavier) air will be present at lower elevations and warmer air will be present at the roofline. The function of insulation is to help stabilize air temperature at more desirable levels. When it is hot outside, preventing heat from transferring into the building is the goal, and of course in the winter we want heat to remain inside.

Heat transfer occurs in three ways:

Conduction : Occurs in a solid or liquid when heat from one object is transferred by touch to another object. An example of this occurs when a pot on a stove will heat up by conductive heat transfer from an electric coil.

Convection : Occurs with the physical movement of air. There are two types of convectional heat movement. The first is natural, where hot air rises displacing the cold air and moving it down. The second type is forced or mechanical convection. This occurs when an object, like a fan, physically moves or "forces" the air to move.

Radiation : Occurs when an object is warmer or hotter than the air around it. For example, the sun, which is hotter than everything around it, radiates heat waves that travel through the air and is either absorbed by or reflected by the surface it comes in contact with.

Insulating Against Radiant Heat

Traditional forms of mass insulation, like fiberglass, are effective in preventing heat transfer by conduction and convection, but they less effect on radiant heat. Between 80 and 90% of the radiant heat striking fiberglass will pass through or be "emitted". Radiant transfer typically has as much impact on the temperature in a building as conduction and convection. For more information on radiant barrier facings click here.

Overall Heat Transmission Coefficient (U-Value)

A unit used to express heat passage through a complete building section, including air films. U-Values serve as a basis for determining transmitted heat loss. The lower the U-Value, the higher the insulation value.

Installation and Selection of Insulation

We provide the highest quality products available. However, proper installation and selection is imperative for maximum effectiveness. Please refer to installation instructions to ensure correct procedures are used. Facings that have been torn or punctured are no longer capable of blocking water vapor and may eventually do more harm than good. Be sure to quickly patch any holes in the vapor barrier.

When selecting a facing, special consideration should be given to its reflective quality. A facing with high reflectivity reduces the need for high light levels in work areas. This results in reduced energy costs and increased productivity.

Although the fiberglass insulation itself is not affected by cold weather, the facing is. Colder temperatures can cause cold crack, a situation where the facing becomes brittle and if handled can crack. Bay Insulation recommends that vinyl faced fiberglass products never be installed in temperatures below 40 degrees.

Steel Buildings

Why should I build with steel instead of wood? - The number one reason is strength. Steel buildings can withstand high load conditions. Steel buildings are fastened together with high-strength bolts and screws. The connections remain secure because there is little to no movement in the structural members and panels. However, wood connections in conventional construction become loose due to expansion and contraction and the result is warping of the wooden frame. Steel does not warp, shrink, or change with time so the connections remain secure. Wooden buildings can suffer damage do to insects such as termites, and this deterioration will reduce the quality of wooden buildings. Furthermore, metal building material is not a flammable substance so your insurance costs will be reduced.

How does the price of a steel building compare with others? - Conventional construction materials are affected by demand and availability; conversely, steel has remained relatively constant for many years. When it comes to pre-fabricated steel buildings it would be difficult to find a like structure to compare with the low cost of a steel building.

Is everything I need to construct my building included? - Everything you need to construct your new metal building will be included with the exception of the anchor bolts, which should be supplied by your foundation contractor.

What is Bay Spacing? - It is the space between 2 frames. For example, the end wall of the building is the End-Frame, and the distance between the End-Frame and the next column/rafter section is the Bay Space, or the distance between two column/rafter sections.

How do I assemble my steel building? - Steel building assembly couldn't be easier. We provide you with the necessary information to erect your steel building quickly and efficiently. Many of our clients erect their steel buildings on their own, although a professional contractor can also used at an affordable price.

Are the steel buildings painted? - Yes, the walls and trim are painted with a long-lasting factory-applied paint manufactured by a leading manufacturer of heavy duty, high performance protective coatings for steel building components. There is a wide selection of colors for you to choose from. You can select the wall panel, trim, and roof colors on the color chart section of our website.