Roof Sailing Roof Repair and Replacement 2

Question 1

What is the correct nail pattern for standard 3-tab asphalt shingles per manufacturer specifications?

Accepted Answer

4 nails per shingle, 1 inch from each end and centered between cutouts

Answer

Standard 3-tab shingles require 4 nails positioned 1 inch from each end and one nail centered in each of the two tab spaces above the cutouts.

Question 2

When replacing a small section of damaged shingles, what must be done to the surrounding shingles before installing new ones?

Accepted Answer

Lift the tabs of the overlapping shingles above and remove nails to slide new shingles in place

Answer

The tabs of overlapping shingles above the damaged area must be carefully lifted and their nails removed so new shingles can be slid underneath and re-nailed.

Question 3

What indicates that a flat roof's EPDM membrane needs immediate repair or replacement?

Accepted Answer

Open seams, splits, or blisters larger than 6 inches that cannot be re-sealed

Answer

Open seams, splits, or large blisters that breach the membrane allow water infiltration and require immediate repair or section replacement.

Question 4

What is the recommended minimum temperature for applying roofing cement or cold-process adhesive?

Accepted Answer

40°F (4°C)

Answer

Most roofing cements and cold-process adhesives require a minimum ambient temperature of 40°F (4°C) to properly bond and cure.

Question 5

Which roofing defect appears as raised circular bubbles on an asphalt shingle surface and is caused by moisture or volatile gases trapped during manufacturing?

Accepted Answer

Blistering

Answer

Blistering occurs when moisture or volatile gases trapped in the asphalt expand under heat and push up bubbles on the shingle surface.

Roof Sailing Practice Test

Roof Sailing Practice Test

Roof Sailing Roof Repair and Replacement 2