UNLIMITED ROOFING LICENSE IN ILLINOIS QUESTIONS
AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
ALREADY GRADED A+
Purpose of roof deck Ans✓✓✓Provide substrate, support loads,
accommodate movement, fire resistance
Loads supported by roof deck Ans✓✓✓All loads- mobile and immobile
Aggregates used in lightweight insulating concrete Ans✓✓✓Perlite,
vermiculite, polystyrene beads
Aggregates used in structural lightweight concrete Ans✓✓✓Shale, clay,
slate
Why replace decks made of nail-based insulation and OSB
Ans✓✓✓More likely to take on moisture
Wood-plank and wood-panel decks Ans✓✓✓Proper thickness
determined by design loads
Description of best roofing system Ans✓✓✓Compatible (matched to)
buildings specifications
Reinforcement (i.e. ply) installation in a BUR membrane
Ans✓✓✓Embedded in layers of waterproofing material
,Procedures when heating asphalt bitumen Ans✓✓✓circulated/stirred
Installing BUR plies Ans✓✓✓single day
Weatherproofing component in single-ply roofing Ans✓✓✓thermoset
and thermoplastic
Fire resistance materials in low-slope membranes Ans✓✓✓Aggregate
material (stone rock pebbles) mineral granules, liquid app coating
Underlayment placement in asphalt shingle roofs Ans✓✓✓Extended
over any drip edge aka flang
Asphalt shingle description Ans✓✓✓Typically 12x36"
Asphalt shingle components Ans✓✓✓The mat asphalt and fillers
mineral granules
Performance characteristic of granules in asphalt shingles
Ans✓✓✓Protect underlying asphalt, increase fire resistance, increase
shingle wind uplift resistance
, Asphalt shingle fasteners Ans✓✓✓Minimum of 6 nails in high wind
areas
Vaulted ceilings and insulation Ans✓✓✓Significant heat build up needs
additional ventilation
Risk of using nail-base insulation Ans✓✓✓Moisture buildup/
condensation
Valleys needing to be enhanced for ice and snow protection
Ans✓✓✓Open valleys
Impact of weather on roofing installation Ans✓✓✓Additional fasteners
or adhesives might be required
Wood shingle/shake fasteners Ans✓✓✓2 fasteners minimum
Installing a wood roof system Ans✓✓✓Minimum of 4:12 slope / 4:12 or
greater
Slate systems needing weatherproof membrane Ans✓✓✓Underlayment
for all slopes
Slate shingle fasteners Ans✓✓✓Copper nails
AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
ALREADY GRADED A+
Purpose of roof deck Ans✓✓✓Provide substrate, support loads,
accommodate movement, fire resistance
Loads supported by roof deck Ans✓✓✓All loads- mobile and immobile
Aggregates used in lightweight insulating concrete Ans✓✓✓Perlite,
vermiculite, polystyrene beads
Aggregates used in structural lightweight concrete Ans✓✓✓Shale, clay,
slate
Why replace decks made of nail-based insulation and OSB
Ans✓✓✓More likely to take on moisture
Wood-plank and wood-panel decks Ans✓✓✓Proper thickness
determined by design loads
Description of best roofing system Ans✓✓✓Compatible (matched to)
buildings specifications
Reinforcement (i.e. ply) installation in a BUR membrane
Ans✓✓✓Embedded in layers of waterproofing material
,Procedures when heating asphalt bitumen Ans✓✓✓circulated/stirred
Installing BUR plies Ans✓✓✓single day
Weatherproofing component in single-ply roofing Ans✓✓✓thermoset
and thermoplastic
Fire resistance materials in low-slope membranes Ans✓✓✓Aggregate
material (stone rock pebbles) mineral granules, liquid app coating
Underlayment placement in asphalt shingle roofs Ans✓✓✓Extended
over any drip edge aka flang
Asphalt shingle description Ans✓✓✓Typically 12x36"
Asphalt shingle components Ans✓✓✓The mat asphalt and fillers
mineral granules
Performance characteristic of granules in asphalt shingles
Ans✓✓✓Protect underlying asphalt, increase fire resistance, increase
shingle wind uplift resistance
, Asphalt shingle fasteners Ans✓✓✓Minimum of 6 nails in high wind
areas
Vaulted ceilings and insulation Ans✓✓✓Significant heat build up needs
additional ventilation
Risk of using nail-base insulation Ans✓✓✓Moisture buildup/
condensation
Valleys needing to be enhanced for ice and snow protection
Ans✓✓✓Open valleys
Impact of weather on roofing installation Ans✓✓✓Additional fasteners
or adhesives might be required
Wood shingle/shake fasteners Ans✓✓✓2 fasteners minimum
Installing a wood roof system Ans✓✓✓Minimum of 4:12 slope / 4:12 or
greater
Slate systems needing weatherproof membrane Ans✓✓✓Underlayment
for all slopes
Slate shingle fasteners Ans✓✓✓Copper nails
