Homeowner Resources

3 Estimates

You called a chimney sweep out and received an estimate that seemed too high. So, you called another company out for a second opinion. The second contractor provided you with an entirely different scenario. So, getting frustrated, you called a third company intending to get to the bottom of this confusing scenario. Now you have three inspection reports that appear to contradict each other and they each seem to arrive at different conclusions.

How do you decide the best course of action?


Any reputable contractor will be able to provide sufficient documentation to support their estimate. Photographs of the issue in question are one of the best methods of demonstrating the need for repair and to later demonstrate the solution provided.

It is of utmost importance to choose a contractor that you feel comfortable hiring to provide the work. Likely price will not be the most important factor in the decision-making process.


Often conflicting inspection reports will come to light when a home is being sold. It is typical for the seller to have a chimney inspected with the expectation that everything is fine. The buyer then asks for an inspection and expensive repairs are indicated. This is often when it becomes more difficult to define the right and wrong of either inspection. As stated earlier, a chimney may be in ordinary condition and be working well and still have numerous defects. In addition to the missing mortar, there may be other issues related to the clearances that should have been maintained, but are clearly not there.

Occasionally, the homeowner, without knowledge of the industry standards for clearances to combustibles, may have added something to the house themselves that is in violation of the proper clearances. For example, bookshelves on the sides or rear of the fireplace are often added in living rooms.

In other cases, the hearth may not meet the required depth based on the size of the fireplace opening. That fireplace may have been in use for fifty years and was considered acceptable at the time of construction. Some inspectors will make a note of this deficiency and others may not.

But is it “safe”?

Many homeowners really just want to know if the chimney is safe. Commonsense tell us that a situation that involves combustion (ex: a fire in your living room’s fireplace) should be tempered with the knowledge that it will never be perfectly safe. Many things can go wrong. The inspector has no control over the operation of the fire and many parts of the chimney structure cannot be seen without intrusive or destructive methods.

Deciding Not to Use the Appliance

Other homeowners will be risk averse and want every detail repaired so they know they have done everything in their power to reduce the risk of a chimney fire or carbon monoxide intrusion. Others may adopt a more cavalier attitude and will not be willing to acknowledge the inherent risk of using a combustion appliance. The most important consideration is to make certain that the products of combustion are contained in the chimney and are vented outside the home.

Because of economic issues some may elect to use their fireplace infrequently and take that chance that the fireplace will not create a problem. In some instances, a homeowner can elect to discontinue use of the fireplace until the appropriate repairs have been made. Keep in mind that the flue serving the furnace will be used any time that the thermostat calls for heat and the appliance kicks on. It is for this reason that the furnace, boiler and water heater venting systems should be considered a priority.

Obvious Problems

In some cases, it is relatively easy to determine when a fireplace is not operating properly. For example, smoke stains above the fireplace opening are an indication of spillage. The smoke spilling from the fireplace may happen infrequently or it might happen every time the fireplace is lit. It could be the result of a flue that is either too small, a chimney that is too short or has offsets or some other restriction. Many homeowners expect a fireplace to smoke from time to time, which is why you often hear “I just love the way it smells when I burn my fireplace”. This is not a fireplace that is venting properly while the homeowner may think it is normal.

Most homeowners do not understand the details of fireplace construction and the clearance requirements. That is why there is a need for CSIA Certified Chimney Sweeps to perform those inspections. The inspection process requires much more skill than simply sweeping the chimney. Based on the individual attitude and preferences of individual inspectors, it is quite possible to receive varying inspection reports on the same chimney. Most importantly, CSIA Certified Chimney Sweeps, as reliable professionals, should be relied upon to be able to discuss their findings and present options in a way which will allow you, the homeowner, to make an informed decision about your chimney.

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