The Benefits of Chimney Waterproofing and How to Do It Yourself
Joseph Robarge • May 23, 2025

The Benefits of Chimney Waterproofing and How to Do It Yourself 

If your home has a chimney, you already know that it requires plenty of maintenance and upkeep. One thing that property owners often overlook is the need to waterproof their chimneys. Here, you’ll discover why you should waterproof your chimney, along with instructions for DIY chimney waterproofing.


The Benefits of Waterproofing Your Chimney

There are several reasons to consider waterproofing your chimney. While a chimney sweep in St. Louis Park will help you maintain the good condition of the chimney, waterproofing adds more protection. Here are some reasons to consider this option:

  • Prevent water damage
  • Avoid mold and mildew growth
  • Reduce heat loss
  • Keep pests and debris from entering your chimney


In addition, waterproofing provides a sealant that protects the structural integrity of the chimney. This can extend its lifetime and reduce the need for repairs.


Waterproofing Your Chimney: A Guide

Adding a layer of waterproofing isn’t a difficult process. Follow these steps to complete the task yourself.


Hire a Chimney Sweep in St. Louis Park

Before you get started, make sure the chimney is in good condition. Use a chimney sweep to clean the chimney and identify repair needs. Schedule professional repairs before moving forward with the waterproofing project.


Choose and Apply a Waterproofing Material

You can apply an acrylic, silicone, or elastomeric coating. Each type of waterproof sealant has different properties, so read the manufacturer’s data to choose the best one for your chimney. 


Additionally, your chimney sweep in St. Louis Park might recommend a specific type of waterproofing. You can apply it by hand or use a sprayer to apply a uniform coating.


Allow Time for Curing

Some waterproofing cures in one or two hours, while other products take up to six hours. Make sure to apply the waterproofing on a clear and dry day. Rain can wash away the substance if the weather changes before the waterproofing fully cures.


Install a Chimney Cap

It’s not necessary to install a chimney cap, but it can be beneficial. The cap adds extra protection against water. It can also help in keeping debris and pests from entering your chimney. 


Protect Your Chimney With Pro Maintenance and Repairs

Guardian Chimney Solutions LLC provides a wide range of chimney maintenance and repair services. Some of our services include chimney inspections, restorations, and sweeping. We also install flashing, flue lining, and stainless steel chimney liners. Contact us to request a free estimate today!

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