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55 Cards in this Set
- Front
- Back
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When is Solid Roof sheathing recommended? |
When the design temperature is 0° or colder |
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When the outside design Temperature is 0° or colder what roof sheathing should be used? |
Solid |
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What size is recommended for solid roof sheathing? |
1 x 6 |
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The spacing of the sheathing boards is equal to |
Weather exposure |
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If you install shingles with 5.5 inches of weather exposure. You must space the sheathing boards how many inches on center? |
5.5 inches |
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The purpose of underlayment? |
1. It Protects roof sheathing before the roof 2. It acts as an added weather protection. 3. It separates asphalt singles from areas where surface resins in wood sheathing may damage the single 4. It Provides additional insulation, especially over roofs with nailing strips that create air space between the sheathing 5. It cushions heavy roofing units, such as tile or slate. While it doesn't absorb a lot of shock, underlayment does help to prevent breakage of these brittle materials under foot traffic. |
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What does underlayment do for shakes and tile roofs? |
Underlayment is the weather protection |
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Underlayment should be installed |
Over the drip edge at the eaves and under the drip edge at the rakes |
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How should single-coverage underlayment be installed? |
2 inch top lap and 4 inch end lap |
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You define the Slope of a roof in terms of |
Rise in inches per 12 inches of run. |
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Where should drip edge be installed |
Under the felt at the eaves. Over the felt at the Rakes. |
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What should be done to prevent leaks caused by ice dams? |
A rubberized product with an adhesive back covered with release paper should be applied to the sheathing |
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What is the purpose of mineral granules on an asphalt roofing product? |
Protection from ultra violet rays |
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Who is Underwriters Laboratory? |
A non-profit that has the most widely accepted standards for fire resistance of building materials |
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Where is a cricket located |
Behind the chimney |
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What is counter flashing or cap flashing |
Flashing built into the vertical surface and bent down over the base flashing usually by the chimney |
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What do a cricket or saddle do? |
Helps keep ice and snow from building up at the upper side of the chimney and diverts rainwater around it. |
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Saddle flashing or Cricket should be built at what slope? |
The same slope of the main roof |
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When installing asphalt shingles how many lbs per square of nails is expected. |
2.5 lbs of nails per square |
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How should roofing nails be driven? |
All should be driven straight so the head doesn't damage the surface of the shingle |
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Shingles with no cutouts should have at least how many nails |
4 nails |
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In high wing and hurricane areas how many nails are required |
6 nails |
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Top lap is where shingles are how thick |
2 layers thick |
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Headlap is where shingles are |
3 layers thick |
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What is exposure? |
Its the part of the shingle not covered by the next course of shingle |
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What is biggest problem with mineral surfaced roll roofing |
Its tendency to buckle |
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What is the best temperature to install roll roofing? |
Above 45 degrees |
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In colder temperature what should be done to roll roofing |
Cut roll into 12 to 18 ft length and lay them out on the ground to warm in the summer |
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Which roofing material are sawn |
Wood shingles |
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Which roofing material are split? |
Wood shakes |
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Battens are required when installing a clay tile shingles on roofs with a slope greater than |
7:12 and steeper. |
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Which roofing covering has the longest life expectancy? |
Slate tile 50 years |
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For slate roofing..what should be used in the valleys |
15 inch wide 16 ounce copper flashing |
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What is the first membrane you install in a BUR system called |
The Base sheet |
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A lot of times the base sheet acts as what? |
acts as a vapor retarded and protects the insulation from damage due to moisture from within the building |
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What type of asphalt is used on dead level roofs |
Type 1 |
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What type of asphalt is used on flat roofs |
Type 2 |
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What type of asphalt is most commonly used (steep) |
Type 3 |
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Most asphalt have a flash point ranging from |
437 to 500° F |
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The maximum temperature asphalt can be heated to is |
475 °F |
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With BUR Surface emulsions should be applied how? |
At a rate of 3 gallons per square |
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When insulating rafters how much space should be allowed for ventilation |
Minimum 1 inch |
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What does a can't strip do? |
It removes the 90 degree angle on roof decks and makes it a 45 angle |
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How should can't strip be installed. |
3 inches and up the vertical surface 5 inches |
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Floors above unheated basements should be |
Insulated |
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What is most important reason to install vapor barrier? |
To prevent warm humid air from contacting cold surface, which causes condensation. |
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How should vapor barrier be installed |
Always on the exterior walls on the warm side of the wall to prevent moisture from getting into the wall |
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What is the main cause of leaks around flashing |
Improper shingling around the flashing |
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How do you repair leaks around flashing |
Remove all loose materials and re-apply roofing cement. |
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How do you repair asphalt shingles |
Applying Roofing cement and sprinkling on loose granules and rubbing them into the cement |
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What is the advantage of repairing asphalt shingles in warm weather? |
They will be more pliable |
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How do you replace a broken slate? |
Insert the new slate underneath the two overlaying courses and nail into place. |
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How do you control moisture? |
Ventilate unconditioned spaces |
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Proper ventilation in the attic while do what? |
It will allow aire to circulate freely and carry away water vapor before it can condense. |
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What is counter flashing |
Vertical flashing bent over the top of base flashing |
