Commercial Attic Ventilation Requirements

Current regulations state that the minimum attic ventilation requirements are 150 1.

Commercial attic ventilation requirements.

Now we can calculate the ventilation requirements using these products and our example building from before. Federal housing authority recommends a minimum of at least 1 square foot of attic ventilation evenly split between intake and exhaust for every 300 square feet of attic floor space. On the upcodes website. Attic ventilation is an important part of keeping your building healthy.

This means that if you have a 1500 sq attic then you would need at least 10 sf of ventilation. Intake vents located at the lowest part of the roof under the eaves allow cool. Throughout the balance of this digest the terms attic and roof will and can be used interchangeably. Roof vents exhaust or intake vents attic fans solar attic fans retrofit vents pvc vent caps ducted vents roof curbs and accessories.

Proper attic ventilation can be an impor tant performance consideration when design ing and installing steep slope roof systems. Contains sections covering roof framing roof sheathing and roof ventilation. All aluminum rust free construction residential commercial and industrial sizes. Chapter 9 roof assemblies.

The international code council icc is a non profit organization dedicated to developing model codes and standards used in the design build and compliance process. Shop directly from the manufacturer. On the upcodes website. Made in the usa.

Chapter 8 roof ceiling construction. 2018 international residential code. The roofing industry also has practical guide lines for attic ventilation. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.

The international codes i codes are the widely accepted comprehensive set of model codes used in the us and abroad to help ensure the engineering of safe sustainable affordable and resilient structures. 2018 international residential code. Typically building codes include minimum requirements applicable to attic ventilation. Let owens corning roofing help you calculate exactly how much ventilation you will need for a healthy and balanced attic with our 4 step ventilation calculator.

21 5 and 387 lineal ft. Proper attic ventilation consists of a balance between air intake at your eaves soffits or fascias and air exhaust at or near your roof ridge.