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Illinois Roofing 122 Exam Questions
Which of these is appropriate during proper installation of expanded polystyrene (EPS) rigid board insulation to a nailable deck in a low slope roofing system/ - โ โ Attach by mechanically fastening the deck.
How should double layers of rigid board insulation be installed in a low- slope roofing system? - โ โ Joints in the layer should be vertically staggered and offset from joints in the layer below.
How should insulation be installed over cementious wood fiber deck panels? - โ โ With adhesive applied to a base sheet that is mechanically attached to the deck.
Which statement most accurately describes proper installation of rigid board insulation in a low-slope roofing system? - โ โ Insulation boards should be protected at the end of each days work.
Which statement most accurately describes nesting new metal decks panels in a low slope roofing system? - โ โ Nesting panels should spam joist over a minimum of 3 supports.
During a roof replacement which of these roof characteristics would be the primary responsibility of the roofing contractor? - โ โ Methods of attachment of roofing materials.
Which of these is most to indicate whether a low-slope roofing system should be recovered or replaced? - โ โ Deck deflections and fungai growth in roof membrane.
Which of the following is most true about re-covering an SPF thermoplastic or thermoset roofing system? - โ โ Insulation boards may be used as separation layers overfully adhered or mechanically fastened single ply systems.
Which statement most accurately describes evaluation of wether low- slope roofing systems should be recovered or replaced? - โ โ Test cuts should be taken as part fo the evaluation of the existing roof.
Which of these is the best to determine wether an existing building includes asbestos containing roofing materials before the project? - โ โ Analysis of test samples of existing roof materials.
Which of these most accurately describes proper maintance and repair of thermoset membranes? - โ โ New fasteners should be installed with a patch that extends 3 inches beyond the fastener plate.
Which of these adds most to fire resistance in low-slope roofing membranes? - โ โ Aggregate or mineral granule surfacing.
How long does it take to install 47 sq of shingles if production is 6.37 sq per day? - โ โ 7.37 sq a day
Why are slings recommended for safe operation of crane or hoist? - โ โ Slings eliminate the risk of hooking a wire rope on itself.
Why is it important place a kettle to have the lid open away? - โ โ To limit fume exposure to workers and building occupants.
Which of the following would be most likely risky situation for roofing employees severe storm at job sites? - โ โ High winds and lightning
Which of these does the NRCA recommend fo step flashing in wood shingle roofing system? - โ โ Exposure plus 3 inches in length by 8 inches wide for non standard shingles.
Why are pitch pockets discouraged in roofing systems? - โ โ They require more frequent maintance.
Which of these may be used in place of a water and ice dam protection in a tile roofing? - โ โ A two ply membrane Underlayment with an interply asphalt roof cement adhesive.
What size water and ice dam protection should be used a roof slope less 4:12? - โ โ A minimum of 36 inches in from the inside exterior wall of the building.
For a 6:12 roof with eaves that extend 30 Horizontal inches from the eave line which of the following would best be the width of ice dam protection? - โ โ 54 horizontal inches.
Which of these most accurately describes fastener maintance and repair procedures in low slope roofing systems with a built up roofing? - โ โ Widespread fastener back-out may indicate a need for re- roofing rather than patching.
Which of these most accurately describes proper maintance and repair procedures in low slope roofing systems with built up roof membranes?
- โ โ An area at least 18 inches beyond the perimeter of the detect should be cleaned and resurface is most BUR patching.
Which of these most accurately describes proper maintenance procedures in low slope roofing systems with modified bitumen
membrane? - โ โ Extend area patch at least 8 in all directions from any part of the detect.
Which of the following most accurately describes proper maintance and repair of low slope roofing systems with modified bitumen membranes? - โ โ Patches can be covered with a coat of asphalt emulsion.
Which is most likely to require tear-off and replacement of a steep slope roof? - โ โ Signs of condensation or moisture in the existing roofing system.
A flat roof that measures 40 feet by 20 feet would have a net roof area of 800 square feet or 8 squares. If that same building had a gable roof with a 6:12 slope, the net roof area would be which of the following. - โ โ 8.94 Squares
A hip roof measuring 40 feet by 20 feet would require how much NET drip edge? - โ โ 120 feet
A two person crew with one person being paid $25 per hour and the other $15 per hour installed 10 squares of material in an 8 hour shift. What was cost of labor per square? - โ โ $32 per square
An asphalt shingle job is 120 squares. What is the job duration if a three person crew can install 15 squares per day? - โ โ 8
Which of the following results in the most lost work days? - โ โ Back injury
What sort of eye protection should be worn during acetylene cutting? - โ โ Tinted safety glasses
Which of these is recommended in a roofing contractors emergency action plan? - โ โ Escape routes must be specified for each roofing location and jobsite.
Which of the following task would least likely be assigned to on employee safety committee? - โ โ Review insurance claims and rates.
Which of the following extensions cords does OSHA prohibit on a jobsite? - โ โ Flat wire cords.
Which of these is recommended whe a roofing contractor implements an assured grounding program? - โ โ All grounding wires should be checked with a continuity tester.
What is the best response when employees believe that a liquified petroleum cylinder is leaking? - โ โ Test the cylinder valve with soapy water.
Which of the following is true according to OSHA about ladders? - โ โ The ladder should never be moved when a person is on it.
How does OSHA require ladders to be set up? - โ โ The ladder must be kept safely in place, or securely tied to rigid support.
Why must roofing employees avoid using powder actuated tools on brittle materials? - โ โ The impact may cause fragments into dangerous projectiles.
Which of these most accurately describes the make up of structural light weight concrete? - โ โ Portland cement and water with aggregates such as shale, clay, or slate.
Which statement most accurately describes roof decks for low slope roofing systems? - โ โ Rigid board insulation may be attached to concrete roof decks with bitumen or liquid applied.
Which statement least accurately describes tile characteristics? - โ โ High absorption tiles are less likely to be damaged during freezing thaw cycles.
What is the purpose of installing eave closures in a tile? - โ โ To prevent birds,insects, and small animals from nesting in the ends of the first tile course.
Which of these does the NRCA recommend when fastening a wood roofing system? - โ โ Determine the length of the fasteners by thickness of all of the combined roofing materials.
Which of these is the most common pattern in a wood roofing system?
- โ โ A straight line course.
Which of these are NOT appropriate to protect expansion joints in low- slope roofing system? - โ โ Fascia cap metals.
Which statement most accurately describes architectural metal roofing assemblies? - โ โ They require continuous or closely space decking.
Which statement most accurately describes structural metal panel roofing assemblies? - โ โ Underlayment is recommend if a structural metal panel directly over a solid deck.
Which statement most accurately describes use of at temporary roofing system? - โ โ Temporary roofing systems may be used as a vapor retarder in the pernament roofing system if the two systems are compatible.
Which statement most accurately describes low slope roofing systems?
- โ โ NRCA recommends that cold storage and freezer building roofs work out best when the temperature structure is built with in another building envelope closure.
How does rigid board insulation reduce heat transfer in a low-slope roofing system? - โ โ With air spaces or cells in the material.
Which statement most accurately describe use of rigid board insulation in low slope roofing system? - โ โ Rigid board may increase the probability of condensation occurring inside the roof system.
How many eaves does a gable roof have? - โ โ 2
How many rakes does a gable roof have? - โ โ 4
Does a hip roof have any rakes? - โ โ No
How many hips does a hipped roof have? - โ โ 4
How many eves are on a hipped roof? - โ โ 4
Eave - โ โ A projecting edge of a roof that extends beyond the supporting wall.
Rake - โ โ The sloped edge fo a gable roof
Hip - โ โ The inclined external angle of formed by the two sloping sides of a hip roof.
Ridge - โ โ The highest point on the roof represented by horizontal line where two roof areas intersect.
Slope - โ โ The incline angle of a roof surface expressed as a ratio of the rise of the roof to the run of the roof, expressed in inches.
A 45 degree angle is a slope of - โ โ 12:
What makes a roof assembly? - โ โ A roof deck plus the roof system.
Which of these is NOT among the purposes of a roof deck? - โ โ Provide waterproofing and moisture control
Which of the following is a non stationary load that a roof deck must be able to support? - โ โ An installers mobile equipment up on the roof.
What is the purpose of light weight insulated concrete? - โ โ To form or fill or provide insulation.
Which type of concrete is designed to hold weight? - โ โ Structural concrete.
Which type of decking withholds most moisture? - โ โ OSB
Why does the NRCA recommend replacing composite roof deck made of laminated insulation & OSB? - โ โ Their tendency to hold moisture can lead to dimensional changes and fastener back out.
When you are installing a wood deck made of boards,planks,plywood,or OSB, which of the following is the most
Which of these is the minimum recommendation for placement of expansion joints in a roof assembly? - โ โ In the same location as the buildings structural expansion joints.
Which of these is the most appropriate for installing eave edge metal in asphalt shingle roofs? - โ โ Extend over the flange
Which of these is the most important performance characteristic for granules on asphalt shingles? - โ โ To protect the coating grade asphalt surface.
Which of these materials are most likely to cause more rapid deterioration in roofing systems with vaulted or cathedral ceilings? - โ โ Asphalt based components installed over insulated non vented decks.
What does the NRCA recommend when installing an asphalt shingle roof? - โ โ Minimum of 6 nails per shingle should be used for the roofs in highwind regions.
Which of these is common risk from use of nail base insulation and its impact on steep slope roof assemblies? - โ โ Condensation or moisture accumulation.
Which of these is the most likely to need to be enhanced when installing valleys in areas prone to regular freeze throw cycles and accumulations of ice and snow? - โ โ Open valleys.
What is the purpose of batten systems in slate or tile roofs? - โ โ To strengthen the bond between tiles or slate shingles.
Which one of the following is true? - โ โ Vapor moves from inside toward the outside of a building in cold weather.
Where is the best place to install a built in gutter, so that if the gutter ever failed, leakage to the interior would be very unlikely? - โ โ At the eave.
Which of the following is true? - โ โ High wind areas often require more roof fasteners or adhesives.
In the case of water build up due to improper drainage, which of the following is LEAST likely to happen? - โ โ A sudden change in the slope and the strength of the deck.
What is the most appropiate method of attaching wood roofing to the substrate? - โ โ Wood roofing requires a min of 2 fasteners for shake or shingle.
At what slope does the NRCA recommend that slate roofing have a weatherproof memebrane under the slate? - โ โ At all slopes
What fasteners are appropriate for attaching slate to roof decks? - โ โ Copper slating nails
Which of these fastening does NRCA recommend when installing a slate roof? - โ โ Just touch the nail head to the slate.
Which of these is common purpose of batten system with a tile or slate roofing system? - โ โ To strengthen the bond between tiles or slate.
