CCS Chimney Waterproofing & Sealing 2

Question 1

What is the recommended application method for masonry waterproofing sealant on a chimney?

Accepted Answer

Two thin coats, allowing the first to penetrate before applying the second

Answer

Two thin coats ensure complete, even coverage; the first coat saturates the surface to allow better absorption of the second coat without puddling or uneven application.

Question 2

What is the primary function of chimney flashing?

Accepted Answer

Create a watertight seal at the junction between the chimney and the roof

Answer

Chimney flashing is sheet metal installed at the chimney-roof intersection to prevent water from entering the home at this highly vulnerable junction.

Question 3

A complete chimney flashing system consists of which two main components?

Accepted Answer

Base (step) flashing and counter flashing

Answer

Base (step) flashing integrates with each course of roof shingles on the sides, while counter flashing is embedded into the chimney masonry and overlaps the base flashing.

Question 4

What is the purpose of a chimney 'cricket' or 'saddle'?

Accepted Answer

A peaked structure built on the high side of a chimney to divert water around it

Answer

A cricket (saddle) is a small peaked roof structure built on the uphill side of a wide chimney to redirect water flow around the chimney rather than allowing it to pond behind it.

Question 5

Which sealant material is NOT appropriate for sealing chimney flashing joints?

Accepted Answer

Standard interior latex caulk

Answer

Interior latex caulk lacks weather resistance and will quickly degrade when exposed to outdoor UV, moisture, and temperature extremes found at chimney flashing joints.

(CCS) Certified Chimney Sweeper Practice Test

(CCS) Certified Chimney Sweeper Practice Test

CCS Chimney Waterproofing & Sealing 2