Roofing Systems

Question 1

Compare the compositions of a conventional roofing system vs an inverted system ( IRMA; PMA )

Answer 1

Conventional Systems:
- Membrane
- Cover Board
- Insulation
- Vapour Barrier
- Deck

Inverted System:
- Ballast
- Geotextile
- Insulation
- Membrane
- Deck

Question 2

Go into detail. What are the system components of a conventional roofing system?

Answer 2

Membrane: Waterproofing
Protection: Protect insulation, Provide taper
Thermal insulation: High R-value. Provide taper
Barrier: Vapour

Question 3

Describe the insulation market ( in % )

Answer 3

PolyIso: 57%
Wood Fibre: 11%
Other: 11%
Perlite: 9%
EPS: 8%
XPS: 2%
Composite: 2%

Question 4

Name the different types of rigid roofing insulation.

Answer 4

• FESCO
• DuraBoard
• RETROFIT

Question 5

What are the 4 applications for SBS-modified bitumen?

Answer 5

• Heat welded - SBS, APP
• Hot Asphalt - SBS
• Cold adhesive - SBS, APP
• Self-adhering - SBS, APP

Question 6

Name the 2 ways to apply adhesives.

Answer 6

• Squeegee
• Spray

Question 7

Name the different types of single-ply systems.

Answer 7

• Thermoset:
  EPDM ( Ethylene, Propylene, Diene, Monomer )
• Thermoplastic:
  PV ( Polyvinyl Chloride )
  TPO ( Thermoplastic Polyolefin )