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Cast-In-Place Chimney Liners

If your chimney lining is too damaged for repairs – or if no lining exists in the chimney in your historic home – you may need to reline your flue. There are several options to consider, but cast-in-place chimney liners are seen as the most “permanent” option for chimney relining. And while this option doesn’t tend to be the least expensive, it has many benefits that can make it worthwhile.

How Cast-In-Place Liners Work

Installing a cast-in-place liner is a labor-intensive process, but the results are a long-lasting, seamless liner that can vastly improve the effectiveness of your chimney.

To install the liner, A-1 Chimney Specialist technicians will insert a former down the length of your chimney, before pumping the liner material — which is similar to concrete — in around the former. The former is removed once the liner sets, leaving a smooth liner that’s free of cracks, gaps or seams.

The Benefits Of Cast-In-Place Liners

  • You have several options when relining your chimney, but cast-in-place liners offer multiple benefits.
  • The material a cast-in-place liner is made of is extremely heat resistant, withstanding temperatures over 2000 degrees.
  • Cast-in-place liners seal any and all voids in your chimney, whether they are gaps, cracks or spalling. And any masonry that has become loose will bond together in the insulation process, becoming part of the new, strong and seamless liner.
  • The addition of a cast-in-place liner will actually add strength to your existing chimney, bolstering the bricks and mortar joints.
  • Unlike mortar or clay, cast-in-place liners are extremely resistant to the corrosion caused by byproducts of burning gas and oil.
  • Because the cast-in-place material creates a remarkably well-insulated liner, condensation and creosote buildup is reduced.
  • Since a cast-in-place liner is seamless, it is also highly effective at increasing the efficiency of your system overall.

If your chimney is in need of relining, a cast-in-place liner could be the right choice. Call to have an A-1 Chimney Specialist technician inspect your flue and help you figure out what option is best for you, or use our online scheduling form.


Another option for relining your chimney is stainless steel liners. Discuss the options with A-1 Chimney to see what’s best for your situation.

  • review rating 5  Not like the cable guys! A-1 Chimney was timely and informative from the start! Phone calls to let you know who, what , when and we’re they were going to be from your scheduled appointment time. Great level of professionalism when they arrived and was knowledgeable of our needs and their solutions. I would highly recommend a small business over the big guys because you are a customer, not a corporate bottom line. As a side note..... good to see a young staff learning a trade. All three of the young gentlemen that were here are supporting that trade. “Ahhh it’s just a fireplace” What do you rely on in a power outage? Emergency heat........... Your fireplace! Thanks A-1..... See you again!

    thumb Nick Bohaychyk
  • review rating 4  Good service but EXPENSIVE. They were prompt and did a good job, but the cost was $40 more than the companies in Nashville.

    thumb Bevo H
  • review rating 5  These two gentlemen were very courteous, prompt, professional, and helpful. They provided the service we needed. We will rely on them for future chimney needs!

    thumb James Bateman
  • review rating 5  A1 Did an excellent job of inspecting my fireplace and chimney. Very professional and very knowledgeable.

    thumb Arlen Naffziger
  • review rating 5  Without reservation, I would recommend A1 Chimney for any of your fireplace and chimney needs. I had them inspect and clean a chimney on two different houses and found them to be very thorough and most professional. They are very cognizant of keeping your house clean and left no mess at all. Their knowledge also instills confidence in their work, and their many years of experience are evident. Nothing less than 5 stars for this wonderful company.

    thumb Clive Wasson


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