CCP Chimney Liner Systems & Relining 2

Question 1

What does UL 1777 certification apply to?

Accepted Answer

Chimney relining systems including flexible and rigid metal liner products

Answer

Clay chimney flue tiles and mortar systems

Answer

Fireplace inserts and freestanding stoves

Answer

Chimney caps and spark arrestors

Question 2

What is the primary benefit of a cast-in-place chimney liner system?

Accepted Answer

It creates a seamless, insulated flue that bonds to the existing chimney interior

Answer

It can be installed without removing the existing clay tile liner

Answer

It is the least expensive relining option available

Answer

It can be removed and replaced easily if damaged

Question 3

Which clay tile liner defect requires the most urgent relining or repair recommendation?

Accepted Answer

Full-thickness cracks that allow combustion gases to penetrate the liner

Answer

Minor surface crazing on the tile glaze

Answer

Slight mortar joint erosion between tiles

Answer

Minor staining from creosote deposits

Question 4

What clearance must be maintained between a factory-built Class A (all-fuel) chimney and combustible materials?

Accepted Answer

2 inches

Answer

1 inch

Answer

6 inches

Answer

12 inches

Question 5

Why must a metal chimney liner be properly sized to match the connected appliance's flue outlet?

Accepted Answer

To maintain correct draft velocity and prevent backdrafting or excessive condensation

Answer

To ensure the liner fits physically within the existing chimney flue opening

Answer

To comply with aesthetic requirements of building codes

Answer

To reduce the total cost of liner materials needed for the job

Question 6

What does the term 'listed' mean when applied to chimney liner products?

Accepted Answer

The product has been evaluated and certified by a nationally recognized testing laboratory for compliance with safety standards

Answer

The product is included in the manufacturer's current product catalog

Answer

The product is approved by the local building department for that jurisdiction

Answer

The product meets minimum price thresholds established for quality assurance

Question 7

What type of mortar must be used when installing or repointing the joints of a clay tile chimney liner?

Accepted Answer

Refractory mortar rated for high-temperature applications

Answer

Portland cement mortar

Answer

Standard masonry mortar (Type S or N)

Answer

Hydraulic setting mortar