Components/Accessories

Which base trim option should I choose? - The base trim that you choose for your steel building will depend on your building's needs and the type of foundation you use. Although we strongly recommend a notched base, we do offer several additional base trim options to suit your specific needs. Please see base conditions for more helpful information and illustrations.

What type of windows do you offer? - We offer a selection of windows for your building. To learn more about what's available please visit the accessories section of our website.

What comes with the doors and windows? - All of our doors and windows come with the required hardware to install them into your steel building. We provide the framing, trim, and flashing for a proper installation.

How do I know where to place my windows and doors? - Windows and walk doors are generally "field located." You, as the customer, will pick the location, cut the corresponding panel to size and proceed to mount the doors and windows. If you choose to include a large number of windows or doors we may ask you to give us your proposed location to ensure proper building bracing.

How do I attach my doors and windows? - All of our walk doors are self-framing, so they include the necessary items to mount them on your building. Our windows are secured by screwing the window trim directly into the building. This is also known as self-flashing. If you live in a high wind area, please talk to one of our design consultants about additional door and window mounting options.

What is the R-Value of your insulation? - The r-value of our insulation depends on the thickness you choose. It will vary between R-10 and R-19. Please see the r-value section of our website for more helpful information.

Condensation Control

The condensation process occurs when warmer moist air comes in contact with cold surfaces such as framing members, windows and other thermally conductive accessories, or the colder region within the insulation itself (if moisture has penetrated the vapor retarder). Warm air, having the ability to contain more moisture than cold air, loses that ability when it comes in contact with cooler surfaces or regions. When this happens, excessive moisture in the air is released in the form of condensation. If this moisture collects in the insulation, the insulating value is decreased.

In dealing with condensation, air may be considered to be a mixture of two gases-dry air and water vapor. One thousand cubic feet of air at 75°F can hold up to 1.4 pints of water. At 45°F, it can hold only 0.5 pints.

Relative Humidity is a percentage measurement of the amount of water vapor present in the air in relation to the amount it is capable of holding at that temperature. Therefore, 50% Relative Humidity would mean that the air is carrying only one-half of the total amount of moisture that it could be holding at that particular temperature. Cold outside air is usually much drier than warm inside air. Therefore, you can lower the Relative Humidity by bringing in outside air to mix with and dilute the moist inside air. At 100% Relative Humidity, the air is "saturated."

The temperature at which the air is saturated and can no longer hold additional moisture is called the dew point temperature. Whenever air temperature drops below its dew point, excess moisture will be released in the form of condensation. Condensation problems are most likely to occur in climates where temperatures frequently dip to 35°F or colder over an extended period of time.

Ridge Vent

Ridge vents come completely assembled for ease of installation. Ridge vents supplied by Metal Building Depot are of a low profile design to provide gravity type ventilation. Because gravity ridge vents are designed to allow free airflow, some penetration of water during blowing rains is to be expected. Standard available finishes for the ridge vents are polar white and galvalume. Other colors may be available at an additional cost. Nominal ridge vent length is 10'-0". Ridge vents are available with 9" and 12" throats. Bird screens are provided as a standard. The ridge vents can be ordered as continuous or single units. Exterior parts are 26 gage painted or galvalume. Interior parts are all made of G90 galvanized steel. The substructure consists of 10 gage saddle straps with interior baffles of 24 gage steel. Lifter arms and damper slides are made of 18 gage steel. Manual operation is through activation of a pull bar which is attached internally to bell cranked type lifter arms connected to the damper with Teflon coated pins through the damper slides. Dampers are spring loaded to remain in the open position until the pull bar is operated and locked in the closed position. Dampers operate in a vertical manner. Each vent is opened by a pull chain that extends approximately 12" below the roof unless noted otherwise on the order documents. Other opening mechanisms are available at an additional cost upon special request. Ridge vents should not be placed closer than 5’-0" to the endwall steel line to allow room to properly flash the building. For example, a 90’-0" long building with ridge vents required the entire length should have no more than (8) units. The ridge vents are available with the following accessories:

Metal Building Kit

Purchasing your new metal building kit. You should be cautious when buying a metal building kit. Not every manufacturer uses high quality materials or fabricates to the latest industry standards. You don't want to purchase a building from a manufacturer (or broker) whose building parts were produced in a factory without the benefit of a skilled eye to oversee the process.

A pre-engineered metal building should come with a complete and comprehensive set of blueprints. When a qualified steel building manufacturer puts its seal of approval on your building design you can rest assured of its structural integrity. You can expect detailed documentation about the building's fabrication and its specific code requirements as well.

Before you purchase a metal building kit you should attempt to create a basic plan for its end use and design. Working with a professional steel building company should ensure that all facets of your building are taken into consideration. They can explain the building options and codes in detail so you have the accurate building specifications.

Gutters & Downspouts

These are generally not required on steel buildings. However, use of these components often enhances the appearance of a building, control drip, splash and drainage.

Gutters and downspouts are an optional accessory that serves as trim. Gutters dramatically improve the appearance of buildings, and we recommend them for most building applications. Downspouts control the water falling from the roof, preventing the water from splashing up on the sides of the building.

On every Metal Building Depot building, die-formed ridge caps are used to cover the peak opening in the center ridge of the building. Some sellers provide a ridge roll cover that must be sealed with closures. Installing ridge roll trim is not an easy task. Over time the exposed foam closures deteriorate and there can be potential leak problems. Our die-formed ridge caps match the panel profile perfectly and are formed to fit the pitch of the roof. Die-formed ridge caps create an almost seamless transition across the roof.