Illinois Residential Roofing License
Comprehensive Resource To Help You Ace
2026-2027 Includes Frequently Tested
Questions With ELABORATED 100% Correct
COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!!
Current Update!!
1. Purpose of roof deck - ANSWER Provide substrate, support loads,
accommodate movement, fire resistance
2. Loads supported by roof deck - ANSWER All loads- mobile and immobile
3. Aggregates used in lightweight insulating concrete - ANSWER Perlite,
vermiculite, polystyrene beads
4. Aggregates used in structural lightweight concrete - ANSWER Shale,
clay, slate
5. Why replace decks made of nail-based insulation and OSB - ANSWER
More likely to take on moisture
6. Wood-plank and wood-panel decks - ANSWER Proper thickness
determined by design loads
,7. Description of best roofing system - ANSWER Compatible (matched to)
buildings specifications
8. Reinforcement (i.e. ply) installation in a BUR membrane - ANSWER
Embedded in layers of waterproofing material
9. Procedures when heating asphalt bitumen - ANSWER circulated/stirred
10.Installing BUR plies - ANSWER single day
11.Weatherproofing component in single-ply roofing - ANSWER thermoset
and thermoplastic
12.Fire resistance materials in low-slope membranes - ANSWER Aggregate
material (stone rock pebbles) mineral granules, liquid app coating
13.Underlayment placement in asphalt shingle roofs - ANSWER Extended
over any drip edge aka flang
14.Asphalt shingle description - ANSWER Typically 12x36"
15.Asphalt shingle components - ANSWER The mat asphalt and fillers
mineral granules
,16.Performance characteristic of granules in asphalt shingles - ANSWER
Protect underlying asphalt, increase fire resistance, increase shingle wind
uplift resistance
17.Asphalt shingle fasteners - ANSWER Minimum of 6 nails in high wind
areas
18.Vaulted ceilings and insulation - ANSWER Significant heat build up
needs additional ventilation
19.Risk of using nail-base insulation - ANSWER Moisture buildup/
condensation
20.Valleys needing to be enhanced for ice and snow protection - ANSWER
Open valleys
21.Impact of weather on roofing installation - ANSWER Additional
fasteners or adhesives might be required
22.Wood shingle/shake fasteners - ANSWER 2 fasteners minimum
23.Installing a wood roof system - ANSWER Minimum of 4:12 slope / 4:12
or greater
, 24.Slate systems needing weatherproof membrane - ANSWER
Underlayment for all slopes
25.Slate shingle fasteners - ANSWER Copper nails
26.Slate fastening method - ANSWER by hand
27.Purpose of cant strip - ANSWER Change roof Incline / Raise butt edge
28.Purpose of batten system - ANSWER Strengthen the bond between slate
or tile shingles
29.Placement of expansion joints - ANSWER Same plane & line as buildings
structural expansion
30.Purpose of expansion joints - ANSWER Reduce stress and movement -
NOT eliminate
31.Expansion joint covers - ANSWER Brake-formed; pre-manufactured;
hidden
32.Vapor movement - ANSWER Warm moves toward cold
Comprehensive Resource To Help You Ace
2026-2027 Includes Frequently Tested
Questions With ELABORATED 100% Correct
COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!!
Current Update!!
1. Purpose of roof deck - ANSWER Provide substrate, support loads,
accommodate movement, fire resistance
2. Loads supported by roof deck - ANSWER All loads- mobile and immobile
3. Aggregates used in lightweight insulating concrete - ANSWER Perlite,
vermiculite, polystyrene beads
4. Aggregates used in structural lightweight concrete - ANSWER Shale,
clay, slate
5. Why replace decks made of nail-based insulation and OSB - ANSWER
More likely to take on moisture
6. Wood-plank and wood-panel decks - ANSWER Proper thickness
determined by design loads
,7. Description of best roofing system - ANSWER Compatible (matched to)
buildings specifications
8. Reinforcement (i.e. ply) installation in a BUR membrane - ANSWER
Embedded in layers of waterproofing material
9. Procedures when heating asphalt bitumen - ANSWER circulated/stirred
10.Installing BUR plies - ANSWER single day
11.Weatherproofing component in single-ply roofing - ANSWER thermoset
and thermoplastic
12.Fire resistance materials in low-slope membranes - ANSWER Aggregate
material (stone rock pebbles) mineral granules, liquid app coating
13.Underlayment placement in asphalt shingle roofs - ANSWER Extended
over any drip edge aka flang
14.Asphalt shingle description - ANSWER Typically 12x36"
15.Asphalt shingle components - ANSWER The mat asphalt and fillers
mineral granules
,16.Performance characteristic of granules in asphalt shingles - ANSWER
Protect underlying asphalt, increase fire resistance, increase shingle wind
uplift resistance
17.Asphalt shingle fasteners - ANSWER Minimum of 6 nails in high wind
areas
18.Vaulted ceilings and insulation - ANSWER Significant heat build up
needs additional ventilation
19.Risk of using nail-base insulation - ANSWER Moisture buildup/
condensation
20.Valleys needing to be enhanced for ice and snow protection - ANSWER
Open valleys
21.Impact of weather on roofing installation - ANSWER Additional
fasteners or adhesives might be required
22.Wood shingle/shake fasteners - ANSWER 2 fasteners minimum
23.Installing a wood roof system - ANSWER Minimum of 4:12 slope / 4:12
or greater
, 24.Slate systems needing weatherproof membrane - ANSWER
Underlayment for all slopes
25.Slate shingle fasteners - ANSWER Copper nails
26.Slate fastening method - ANSWER by hand
27.Purpose of cant strip - ANSWER Change roof Incline / Raise butt edge
28.Purpose of batten system - ANSWER Strengthen the bond between slate
or tile shingles
29.Placement of expansion joints - ANSWER Same plane & line as buildings
structural expansion
30.Purpose of expansion joints - ANSWER Reduce stress and movement -
NOT eliminate
31.Expansion joint covers - ANSWER Brake-formed; pre-manufactured;
hidden
32.Vapor movement - ANSWER Warm moves toward cold
