What is the impact of cellular glass insulation on mission critical building design? Submit your answers in our Continuing Education Center to earn free CEUs.

1. Cellular glass is composed of:
A. Finely ground glass
B. Polystyrene
C. Polyisocyanurate
D. Hydrochlorofluorocarbon (HCFC)
2. Compressive strength of cellular glass insulation can be as high as:
A. 40 psi
B. 60 psi
C. 100 psi
D. 240 psi
3. Roof decks that cellular glass may be applied to include:
A. Wood
B. Steel
C. Concrete
D. All of the above
4. Is cellular glass vapor impermeable?
A. Yes. It tested below 0.1 perms per ASTM E96
B. Yes. It tested to 10 perms per ASTM E96
C. No. It lets moisture vapor “breathe.”
D. No. It relies on facers to be vapor impermeable
E. No. Without facers, it burns per ASTM E136
5. Cellular glass for roofing applications can meet requirements for:
A. Underwriters Laboratories (UL) 1256
B. Factory Mutual (FM) 4470
C. NFPA 285
D. Both A and B
6. What makes cellular glass noncombustible?
A. Flame retardants
B. Raw materials glass and carbon
C. Polyolefin facers
D. Glass mat facers
E. Modified bitumen coatings
7. Cellular glass roof insulation is available in this size:
A. 12-by-12 inches
B. 24-by-96 inches
C. 18-by-24 inches
D. B and C
8. Cellular glass can be attached to the roof by:
A. Embedding in hot asphalt
B. Gluing with cold adhesive
C. Specialty screws and plates
D. Bubble gum
E. Adhesive tape
F. A and C only
G. A, B, and C
9. The R-value per inch of cellular glass can be as high as:
A. R-0.5 per inch
B. R-3.8 per inch
C. R-17 per inch
D. R-2.4 per inch
10. Cellular glass:
A. Does not release smoke when tested to ASTM E84
B. Does not spread flame when tested to ASTM E84
C. Is noncombustible per ASTM E136
D. All of the above
Thank you!
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