CLC Exterior Cladding, Windows & Doors Installation 2

Question 1

When flashing a flanged window in a house-wrapped wall, what is the correct order for applying flashing tape?

Accepted Answer

Sill, jambs, then head

Answer

Flashing goes on bottom-to-top (sill, jambs, head) so each upper layer laps over the lower one, shingle style.

Question 2

How tight should vinyl siding nails be driven?

Accepted Answer

Leaving about 1/32 in. (a dime's thickness) between the nail head and the panel

Answer

Vinyl must be able to slide as it expands and contracts, so the nail head stops about 1/32 in. short of the hem.

Question 3

What is the maximum horizontal nail spacing for standard horizontal vinyl siding panels per the Vinyl Siding Institute?

Accepted Answer

16 in. on center

Answer

VSI guidance calls for fasteners no more than 16 in. apart, typically at each stud.

Question 4

What minimum clearance between fiber cement lap siding and finished grade do most manufacturers, such as James Hardie, require?

Accepted Answer

6 in.

Answer

Fiber cement installation instructions typically require at least 6 in. of clearance to grade to limit moisture wicking.

Question 5

When shimming a prehung exterior door, where should the shims on the hinge jamb go?

Accepted Answer

Directly behind each hinge

Answer

Shimming behind each hinge gives solid backing where the door's weight is carried, which prevents sag.

(CLC) Certified Lead Carpenter Practice Test