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Chimney Waterproofing Options Have Come A Long Way

The construction of a chimney includes many measures meant to prevent water from entering the system and damaging the masonry. But years back, adding a protective waterproofing layer to the masonry itself wasn’t an option, because the masonry’s function is more complex than meets the eye. Bricks and mortar are porous, and they need to be to do their job — gases and small particles need to move through the masonry and be expelled from the chimney. Just applying paint to the outside of a chimney might keep water from getting in, but it would also keep those gases and particles from getting out.

Today, we can add a high-quality waterproofing sealant that’s 100-percent vapor-permeable, solving both problems. This sealant keeps water from working its way into the masonry but still allows the brick and mortar to “breathe” and usher those harmful gases and small particles out.

We can also add waterproofing sealant to your chimney’s crown, allowing it to more effectively stand up to the weather, and do its job of directing rain and snow away from the flue.

If you have a chimney that’s more than 15 years old, we highly recommend adding a waterproofing sealant — it can extend the life of your chimney dramatically and make it safer and more efficient in the process.

Why It’s Important To Protect Your Chimney Masonry

We’ve talked about the benefits of chimney masonry’s porous qualities, but there are, of course, problems that come along, too. As your chimney masonry sits open to the elements, moisture can seep into the brick and mortar. The moisture itself can lead to deterioration, but the way water expands and contracts as it freezes and melts is even more problematic. This process can create cracks, gaps, spalling, and overall degradation. When it comes to the integrity of your chimney, water can be a slow and steady destruction crew and that’s why it makes sense to be vigilant in fighting against it.

As a preventative measure, waterproofing sealant can be hugely valuable — it’s an affordable investment into the life of your chimney and it can help you avoid costly restoration and rebuilding.

Be Proactive In Fighting Against Water

We recommend using a waterproofing sealant to protect your chimney from water’s damaging effects – but that’s just one of the preventative measures we encourage homeowners to look into.

Getting your annual chimney inspection is step No. 1 in keeping ahead of water damage. A-1 Chimney Specialist’s CSIA-certified technicians can thoroughly inspect your chimney to find any water damage or current or impending sources of leaks and recommend the right repairs to make your chimney whole again.

We might also recommend:

  • We see many homes that are missing chimney caps. Those may seem like a small piece of a big system, but chimney caps do valuable work — they help keep rain, snow and sleet (not to mention animals) from getting into your flue. Installing a chimney cap or replacing a damaged one is a worthwhile preventative measure.
  • Do you see loose caulk around your chimney flashing? Or holes in your flashing? Flashing protects the area where your chimney and the roofline meet, so faulty caulk work or holes can lead to leaks. If you see issues with your flashing, call A-1 Chimney Specialist — we can fix it before a small problem becomes a big one.
  • If your chimney damper — which blocks off the flue and keeps water out when the chimney isn’t in use — isn’t working correctly, you may need to have it repaired or replaced. We’ll check the chimney damper during an inspection and recommend the best course of action.

If you’re having problems with water getting into your chimney, or want to explore preventative measures such as waterproofing to keep that from happening, call A-1 Chimney Specialist at 931.967.3595 or click here to schedule online.

Sometimes, chimney leaks start with problems with the flashing, so be sure to have A-1 experts check it out.

  • review rating 5  A1 came out to sweep and inspect our chimney, as well as put a screen over the chimney opening. The guys that came out were fantastic!! They were so kind, friendly, and very professional. I was comfortable with them in my house, and they did a great job. They explained everything to me, and joked with my kids. We’ve already recommended them to other people and it’s only been 10 hours since their visit! We’ll definitely use them every time we need chimney services.

    thumb Laura Cole
  • review rating 5  I can't say enough good things about this company. The men came to clean our chimney (which badly needed it). They kept the house clean; they were so very polite; they took photos of the chimney. They also checked our dryer vent and took photos of that. We then learned that they service gas fireplaces--and we have been hunting for someone to help us with this. A lovely team. Super professional. It was like having the best doctor make a house call.

    thumb Elizabeth Grammer
  • review rating 5  On time to identify problem/issue great professional young technician that knew what to recommend. Alway communicated and reason I have used for my fireplace for over 15 years.

    thumb Roy Millar
  • 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


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