CCS Cheat Sheet 2026

The 30 highest-yield CCS facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. A chimney sweep discovers asbestos rope gasket material around a fireplace insert door. The correct action is to: → Encapsulate it and advise the homeowner to contact an asbestos abatement professional
2. What process most commonly causes spalling of brick on a chimney exterior? → Freeze-thaw cycling of water trapped within porous masonry
3. What is the recommended approach when a chimney has been incorrectly repointed with a mortar that is harder than the original brick? → Remove the incompatible mortar and replace with a softer, compatible mix
4. When relining a chimney that serves multiple appliances (e.g., furnace and water heater), what is the code requirement? → Each appliance must have its own dedicated liner
5. What is the purpose of installing a chimney cap? → To prevent debris, animals, and rain from entering
6. The fireback is the rear wall of the firebox and its primary function is to: → Reflect radiant heat into the room and protect the masonry behind the fire
7. Which condition creates the highest risk of a chimney fire within a wood stove system? → Allowing the stovepipe to become red hot during a hot burn
8. When a new high-efficiency gas appliance is connected to an existing masonry chimney, NFPA 211 typically requires: → Relining the chimney with an approved liner sized for the new appliance
9. Which EPA regulation restricts the sale and installation of certain wood-burning heaters and requires them to meet particulate emission limits? → EPA NSPS 40 CFR Part 60 Subpart AAA
10. The smoke chamber is located: → Between the throat damper and the base of the flue liner
11. When is it appropriate to use a rotary cleaning system rather than standard brushes on a flue? → When heavy or hardened creosote deposits require more aggressive mechanical action
12. What is the function of the smoke shelf in a masonry fireplace? → To catch falling debris and rain and prevent downdrafts from pushing smoke into the room
13. What is 'glazed creosote' (third-degree creosote) and why is it especially difficult to remove? → A hard, shiny, tar-like deposit that resists mechanical brushing
14. What is the function of an insulation blanket or poured insulation fill around a flexible stainless liner? → It raises flue gas temperature to improve draft and reduce condensation
15. NFPA 211 requires that the walls of a masonry chimney (excluding the flue liner) be constructed to a minimum thickness of: → 4 inches
16. What is the correct term for the angled rear wall of a firebox that helps direct smoke upward into the smoke chamber? → The fireback
17. A chimney sweep finds that the mortar between the smoke chamber corbeling is crumbling. The BEST repair approach is: → Apply parging with a refractory or heat-resistant mortar coating
18. What is the primary ethical obligation of a CCS professional when a conflict of interest arises during flue liner types & installation activities? → Disclose the conflict to all relevant parties and recuse from the decision if necessary
19. When a Type B gas vent is used, what is the maximum allowable flue gas temperature at the vent connector? → 480°F
20. How can homeowners prevent chimney fires? → By cleaning the chimney once a year and burning dry, seasoned wood
21. A homeowner claims the chimney sweep's work caused a gas leak two weeks after service. What should the sweep's first step be upon receiving the complaint? → Contact the insurance carrier and document the complaint without admitting liability
22. Which condition most clearly indicates that entire brick units need replacement rather than just repointing? → Brick faces delaminating or structural cracking through the brick body
23. What is the primary ethical obligation of a CCS professional when a conflict of interest arises during csia inspection level standards activities? → Disclose the conflict to all relevant parties and recuse from the decision if necessary
24. How does an oversized flue relative to the appliance opening contribute to creosote formation? → A large flue causes gases to move slowly and cool before exiting, increasing condensation
25. When a sweep suspects a crack in the flue liner behind a finished wall during a Level 2 inspection, the CORRECT next step is to: → Document findings and recommend a Level 3 inspection
26. What is the purpose of a Level 2 chimney inspection? → To examine the chimney’s interior and exterior for damage and obstruction
27. When sweeping a chimney from the bottom up, which tool is most appropriate for removing debris from the smoke chamber? → Hand scraper or smoke chamber brush
28. Which CSIA standard defines the three inspection levels and guides sweeps in post-chimney-fire assessments? → CSIA Level III (includes removal of components to access hidden areas)
29. How often should a chimney be inspected? → Once a year, preferably before the heating season
30. Which of the following is a fundamental principle of business insurance & liability as it applies to Certified Chimney Sweeper? → Systematic evaluation and adherence to established industry standards