Bar Joist Insulation

Bar Joist buildings are often times insulated on the underside of the roof deck to increase the building's energy efficiency. Metal bar joists vary in depths and shapes, therefore, attaching the insulation to the bar joist building can prove to be limited in comparison to a common metal building. The method used to secure the insulation is at the building owner's discretion. Bar joists are typically deeper than 12" and to prevent condensation you do not want to create airspace between the roof deck and the insulation, unless you ventilate. Because of this it is best to secure the insulation blankets tight up against the roof deck. There are a few options available to achieve this.

Bar Joist Clips

This is an easily installed, attractive system which requires very little hardware. Bar joist support clips are secured to the top of the joist and hang down. Banding is fed through the bottom of the clip, holding the blankets in place tight against the roof deck.

Bar Joist Clips
Bar Joist Roof Insulation
Bar Joist Roof Insulation
Bar Joist Clips

Steel Banding

Steel banding can be screwed with a heavy duty screw to the joist securing the fiberglass blankets in place. Be sure to ventilate if you are creating airspace between the insulation blankets and the roof deck.

Bar Joist Building Insulation
Insulating Bar Joist Buildings
Bar Joist Insulation Materials

Stick Pins with Adhesive

Stick pins are adhered to the roof decking 1 foot apart. The adhesive has a 24 hour dry time. Once it is dry the roof insulation can be hung and friction washers hold the insulation onto the pins.

Bar Joist Metal Building Insulation
Metal Building Roof Insulation
Bar Joist Insulation Supplier