Blog Post

Old House, New Chimney: Can You Restore An Antique Fireplace

  • By Admin
  • 04 Apr, 2018

Before the permanent shift in energy use and the way homes were heated, the fireplace was the key component in most rooms. Some historical homes have many different fireplaces, and even though they might be beautiful, many are no longer functional.


For those who love the idea of making an old fireplace the center of the room once more, they are faced with many logistical roadblocks. Has the fireplace been renovated before? It is safe for burning wood? Would a gas insert be a better option? Can the fireplace itself be restored?


Here's what you need to know about fireplace restoration and use in old historical homes.


Old Retrofitting

Not all fireplaces in older homes were made to burn wood. Sometimes new developments in fuel sources meant the previous homeowners had to change the fireplaces to be connected to the first central heating systems or that the space for burning logs was changed to hold a space for a coal stove.


If you truly want to restore the fireplace to be wood burning once more, it's important to know if the space was ever retrofitted previously. The soot from burning coal may coat stone or brick and weaken it, so a few decades of coal burning in the past might mean an old chimney will need some additional TLC.


For fireplaces that had at one point been connected to antique central air systems, there might be holes in the brick or old pipes running through the chimney that will need to be removed. These holes can sometimes be plastered over, so it's important to carefully strip the chimney and fireplace down to bricks to assess its condition.


Structural Enforcements and Safety

After you've successfully gutted and prepped the old fireplace, it's time to make repairs and get it ready for actively burning again.


Choose Your Fuel or Insert Type

If you want to burn wood again, consider a wood burning insert with doors to go in the fireplace opening. These are much more energy efficient than open wood fires that actually draw heat from the room, and they still provide the ambiance of a fire with glass doors.


You can also get Victorian- or craftsman-style inserts that keep the original style of the fireplace. Not all fireplaces in old houses were open flame. Many had cast iron faces with decorative plates that were much more effective at heating the home. These stove styles are still available today, with modern updates to improve effectiveness even more.


Gas inserts are also a popular choice as they are low maintenance; there is no ashtray to clear or doors to clean. If you really want the old, open-fire look (no doors in the way), you might also consider gas logs. These logs can be remote controlled so you don't need to light them, and they produce realistically cheery flames.


Prepare for Repairs

The type of burning or fuel you hope to use will inform the type or extent of repairs you need to make. For older brick chimneys, you may need to repoint crumbling mortar and get the chimney lined and insulated before it is safe to burn wood or any other fuel. Without fixing structurally compromised brick, you risk the safety of your home.


Lining and insulating are essential because they provide a heat barrier and a heat-resistant surface to reduce the dangerous buildup of creosote and other harmful burning byproducts. Chimneys are easier to clean and maintain if they are lined.


Older chimneys may be unlined or they may be lined with clay tiles and smooth mortar. Usually, these tiles are cracked with age and the mortar is no longer effective. Without the liner, the brick and mortar of old chimneys gets weaker with each fire, simply because of the intense heat and corrosive creosote.


New liners are made with new clay tiles (the most traditional option), cast-in-place concrete (just as effective as tiles, but less costly to install), or inserted metal liners (common with gas and alternative fuel inserts). The type of flue liner you need depends on the state and shape of your old chimney.


It's much easier to install gas inserts in a fireplace space because these simply need to be vented with a metal flu liner instead of a fully restored chimney, which can be less costly. Be sure the insert is installed properly so that you don't experience drafts from the outdoor venting when the fireplace is not running.


Safety Tests

After restoration and installation, you should make sure that you run several safety tests. Ask your fireplace professional to check for flue leaks and heat loss. You'll also want to measure emissions in the room to make sure you're not at risk for carbon monoxide poisoning or smoke inhalation.


To keep a newly restored fireplace in good shape, you should be committed to cleaning. Wood burning fireplaces need the most attention, since creosote can build up quickly, especially if your fire is not burning hot and your wood fuel is not as dry or clean. Have your fireplace inspected and checked for safety annually.


For more information, contact us at Hartman Heating, Air and Fireplaces.

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Read on to learn more about creosote, how it affects your fireplace, and the steps you can take to keep your fireplace in good condition.


What Is Creosote?

Creosote is a combination of tars and various other chemicals produced as a byproduct of burning wood or fossil fuels. Small amounts of creosote mingle with the smoke that rises to the top of the flue. Along the way, the creosote combines with moisture and adheres to the flue liner or open brickwork of the chimney, creating a thin layer of tar that solidifies as it cools.

Creosote has had plenty of interesting uses throughout history, including as the active component of various medicines. These days, creosote is used in commercial applications to treat and preserve wood for increased longevity and durability. Creosote is responsible for giving smoked meats their distinctively smoky flavor, plus it's also the special ingredient behind artificial liquid smoke flavoring.


Why Is It Dangerous?

Creosote buildup never goes away on its own. Once a layer of creosote forms, it's there for good until it's physically removed. Without proper cleaning, multiple layers of creosote will steadily build up every time you use your fireplace. This buildup causes the flue to narrow, reducing the amount of ventilation available to your fireplace.

The resulting lack of fresh air prevents your fireplace from burning its fuel efficiently, resulting in a smaller, dirtier flame that causes even more creosote buildup. The cycle continues until your flue becomes completely blocked with creosote, rendering your flue liner unusable.

Creosote is also highly flammable, especially when it accumulates in large amounts. Excess amounts of creosote can ignite when exposed to enough heat from your fireplace. Creosote-fueled fires can spread quickly and with little to no warning, making these fires incredibly dangerous. Failure to clean excess creosote buildup is a common factor behind most home heating fires, according to research from the National Fire Protection Agency.


How Does It Form?

There are several stages to creosote buildup. Each successive stage can prove more difficult to deal with than the last, which highlights the importance of tackling creosote buildup at its earliest stages. How soon creosote buildup occurs usually depends on several factors, including the efficiency and overall condition of your fireplace. If you're using a wood fireplace, the quality of the wood being used as fuel can also affect creosote buildup.


First Stage

Creosote buildup starts out as a light coating on the flue. Depending on how efficiently your fireplace burns its fuel, the creosote buildup will mostly consist of soot with small amounts of tar mixed together. As a result, the initial stage of creosote buildup appears thin and flaky.

The first stage of creosote buildup is always the easiest to deal with. Fireplace technicians can remove creosote buildup using special-purpose brushes, preventing additional, harder-to-remove layers from forming.


Second Stage

As the creosote buildup continues, the soot is replaced with more tar, giving the creosote a thicker, harder, and sometimes shinier appearance. The overall texture of the buildup remains dry and crumbly, however.

Brushing alone won't remove second-stage creosote buildup. Rotary loops and chemical solvents are the usual go-to tools for fireplace technicians when battling creosote buildup at this stage.



Third Stage

Left to its own devices, the creosote buildup eventually turns into a highly concentrated mass that appears oily and feels sticky when fresh. Repeated exposure to heat usually gives this mass a hardened, shiny appearance. At this stage, a simple cleaning may be extraordinarily difficult, if not impossible. Some technicians even encourage a complete replacement of the flue liner as a more cost-effective alternative to cleaning.



How Can It Be Prevented?

Since it's a naturally occurring byproduct of the combustion process, there isn't much you can do to completely stop creosote buildup in its tracks. However, taking a proactive stance on fireplace maintenance will help prevent excessive creosote buildup.

Fireplace technicians can spot and take preventive action against the beginnings of excessive creosote buildup during regularly scheduled fireplace checkups. These checkups also ensure that the flue's inner mechanisms are working properly, significantly reducing the rate of creosote buildup.

Most experts recommend having your fireplace inspected on an annual basis. Flue cleanings should be done when there's a 1/8-inch deposit of creosote in the flue.

Prevention is always the key when it comes to creosote buildup. The sooner you can tackle the buildup, the easier it'll be to deal with. To learn more about the effects of creosote buildup or to schedule a professional inspection, contact us at Hartman Heating , Air and Fireplaces today.
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From supplementing your HVAC system in the winter to adding an appealing focal point in any room, you have several reasons to install gas or wood fireplace in your home. Have you decided that a fireplace is a great investment but are not sure if a gas or wood model is the best option for your home, family, and budget?

Do not agonize over this decision. Instead, here are a few tips and factors to help you determine if you should choose a gas fireplace or a wood fireplace for your home.


Cost of Installation

The cost to install either a gas or wood fireplace is dependent upon several factors. You have two common types of gas fireplaces in homes: gas inserts and built-in models. You install a gas insert inside an existing firebox, while you install a built-in in the wall. With the built-in fireplace, you do not need to have a firebox already in your home.

A freestanding wood stove typically costs less to install a traditional built-in wood fireplace. This is because if you opt for a built-in wood fireplace, you pay for the cost of labor and components, including the masonry.

You have other factors that impact the cost of installing either a gas or wood fireplace. If you lean toward gas, you will need to install a new propane or natural gas line if one does not already exist. Additionally, you will need to decide if you want to install a ventilation system.

For wood fireplaces, you will need to factor in the cost of replacing an existing fireplace, including the surround and firebox, and the price of installing a new chimney or repairing the existing chimney.


Cost of Fuel

The typical fuel source for a gas fireplace is either natural gas or propane. The price of either will vary throughout the year depending upon several factors, including supply, the time of year, petroleum prices, and state of the economy.

Because prices and availability fluctuate, contacting a professional to help you determine which option is best for you is a great way to ensure you choose the right product.

The costs to install either a built-in or gas insert model are about the same.

The cost of fuel for a wood fireplace is typically much less, especially if you have a readily available supply of trees on your property. The cost of wood is far less than natural gas or propane, but this can be more time-consuming to gather, cut, stack, and store the wood. Keep this in mind, especially if you do not have a place to store wood on your property.


Cost of Maintenance

The cost to maintain a wood fireplace is typically higher. If you choose a wood-burning stove, you will need to clean it periodically and schedule an appointment to have a professional inspect the unit at least two to three times per year. If the wood stove does not properly combust the fuel, the stove will not run efficiently. Maintaining a built-in wood fireplace will also cost more on average.

In addition to inspecting and cleaning the firebox, you will also need to have a professional inspect the chimney at least once a year . Luckily, you have professionals who can handle these jobs and will ensure that your built-in wood fireplace is also in amazing shape.

A gas fireplace is typically very easy to maintain and care for. If the fireplace has vents, hiring a professional to inspect and clean it at least once a year will prevent clogs.


The Look of Gas or Wood

The aesthetic appeal and the homeowner's taste is a huge factor when considering whether to pick gas or wood. If you have a more modern home, a sleek glass fireplace is a great option. You have several varieties of built-in and insert fireplaces, including models that feature glass logs, stones, or coal. You can even purchase a gas fireplace with a remote control.

If you have a more traditional home or simply prefer the classic elegance of a brick or stone facade and mantel, consider a wood fireplace. Many homeowners also prefer the smell and feel of a traditional built-in wood fireplace as well.


Resale Value

A recent survey of homeowners found that as many as 40 percent  would pay more for a home that features a fireplace. Whether you choose gas or wood, installing a beautiful fireplace in your home is always a smart investment. If you want to sell your home in the future, ask a local real estate agent about which type of fireplace that homeowners in your area prefer.

From the potential resale value they add to the cost of installation and maintenance, several factors exist that you should consider when deciding to choose a gas or wood fireplace for your home. If you have any further questions, contact the professionals at Hartman Heating, Air and Fireplaces .

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