Need Your Chimney Crown Repaired Or Rebuilt? Call On Sweepnman!

Is the crown responsible for your leaky chimney? Let Sweepnman take care of it. We’ve repaired and rebuilt dozens upon dozens of chimney crowns in North Reading, Westford, and their many neighboring communities, and we know how to eradicate leaks and keep your chimney dry. So what are the most common types of crown damage and crown troubles we see, and what do we do about them?

Cracked Crowns

If cracks have formed on your crown, water will only work to extend and enlarge those cracks with each rain or snow fall. And as those cracks grow, more and more water will enter your chimney system and home. That’s why cracks need to be repaired as soon as they’re identified, and we have the tools and products for the job. If cracks are large, we’ll first need to seal them and fill them with cement or caulk, and allow them to fully dry. Once dry, we’ll use CrownCoat, a brushable sealant, to cover the crown and provide a waterproof membrane that will last, storm after storm and season after season. In fact, CrownCoat carries a 15-Year Warranty! And since it can be custom colored, you don’t have to worry about it messing up your home’s aesthetic.

What else makes CrownCoat such a great product?

  • It’s environmentally-friendly
  • It’s fast-curing
  • It’s easy to apply
  • And it provides a permanently flexible membrane, which means it won’t contribute to future cracks as the crown expands and contracts with temperature changes.
Close up of chimney crown rebuild with freshly poured crown

Poorly Designed Crowns & Crowns Made Of Poor Materials

One thing we find that is a major contributor to crown damage is low-quality material. While some may think it’s okay to build a crown out of standard mortar, it’s not. Standard mortar simply won’t stand up to the weather abuse the crown is put through, which is why a strong concrete that’s reinforced with mesh should be used. These materials can really take the abuse of moisture and temperature changes, and will provide a much longer service life.

Another major contributor to crown-related chimney leaks and crown damage is poor design. A good crown will be slightly angled to allow rain and snow to slide right off, and will have an overhang that will prevent it from directing rain and snow right down onto the flashing at the base of the chimney. Additionally, the crown will be at least 3 inches thick at its thinnest point — otherwise, moisture will wear through rather quickly.

If your crown and chimney leak problems are related to poor material or poor design, we can help by rebuilding your crown to proper proportions, using proper materials.

Reach Out By Phone Or Through Our Website To Schedule Your Appointment

To request an appointment to have your chimney crown inspected, repaired, or rebuilt, or to have your crown protected against moisture damage with CrownCoat, call Sweepnman at 978-664-6642 or fill out the appointment form right here on our website, and we’ll have someone reach out to you ASAP to get your appointment on the books.


Professional chimney waterproofing could be exactly what you need to prevent or fix your leaky chimney. Find out why it’s such a good choice.