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Updates

Stopping & Blocking Fires & Drafts

Q: Can you explain the difference between draftstopping, fireblocking and firestopping? A: These three terms are defined and required by the International Building Code. They are significantly different and should not be confused. ...

Membrane Protection

Q: Can you explain membrane protection in fire-resistive construction? A: The concept of membrane protection is based on the necessity to maintain fire protection when a membrane or one side of a fire-resistive...

Joint Ridging in Drywall

Q: What can you tell me about ridges that may occur after I install and finish gypsum wallboard? A: That is a phenomenon called “joint ridging,” and these ridges generally appear along the...

Wall Prioritization

Wall Prioritization Q: What can you tell me about wall prioritization? A: The term is typically used in regard to fire-resistive walls and buildings that fall under the International Building Codes. The intent...

When Humidity Makes Wallboard Swell

Q: After I painted a recently finished wall clad with gypsum panels, I noticed depressions at the fastener locations. I know the wall did not have these imperfections prior to painting it. Can you explain...

Fire Assemblies Defined

Q: How are “fire wall,” “fire barrier” and “fire partition” defined?? A: AAccording to the International Building Code, there are subtle but significant differences in those terms. Any discussion on these assemblies must...

The Difference Between F and T

Q: Can you help me understand the difference between F and T ratings in firestop design? A: These ratings reflect completely different performance-based results that indicate the ability of a specific firestop to...

EcoDemo

Q: Can you help me understand how building code–mandated sustainability requirements are affecting construction demolition and waste? A: Two existing building codes are having a significant impact on how construction demolition and waste...

Thermal Barriers Defined

Q: What does the term “thermal barrier” mean? A: A thermal barrier is required by the International Building Code to provide separation from foam plastics and an interior space. Specific language for this...