How To Seal A Stone Foundation

A stone foundation can last a lifetime if it is properly sealed. The first step is to clean the foundation of any dirt, debris or loose mortar. Once the foundation is clean, a masonry sealer can be applied with a brush or roller. The sealer will create a barrier between the foundation and the elements, preventing moisture damage.

4 Steps to Seal A Stone Foundation

One way to seal a stone foundation is to use a waterproofing Agent. This Agent will fill in any cracks or holes in the foundation and will prevent water from entering the home.

Seal a stone foundation is important to protect the foundation from water damage. Water can seep into the foundation and cause cracks and other damage. Sealing the foundation will help to prevent this from happening.

Step 1: Clean The Surface Of The Foundation

Before beginning to seal a stone foundation, it is important to clean the surface of the foundation. This can be done with a power washer, or by scrubbing the foundation with a stiff brush and soapy water. Once the foundation is clean, allow it to dry completely before proceeding with the sealing process.

Step 2: Apply A Coat Of Sealant To The Surface Of The Foundation

After the surface of the foundation has been cleaned, a coat of sealant should be applied in order to protect the stone from water damage.

Step 3: Allow The Sealant To Dry

After the sealant has been applied to the stone foundation, it is important to allow it to dry in order to ensure that it is properly sealed. Depending on the type of sealant used, this can take anywhere from a few hours to a few days. Once the sealant is dry, it should be inspected to make sure that there are no cracks or gaps in the sealant.

Step 4: Repeat If Necessary

If the stone foundation is not properly sealed, water can enter the home and cause serious damage. To seal a stone foundation, first, clean the foundation with a power washer. Next, apply a masonry sealer to the foundation with a brush or roller. Allow the sealer to dry for 24 hours. Finally, apply a second coat of sealer if necessary.

Frequently Asked Questions

How Do You Fill Gaps In Stone Foundation?

The most common way to fill gaps in stone foundation is with hydraulic cement.

Can You Use Drylok On Stone Foundation?

Yes, Drylok can be used on stone foundation.

Can You Use Drylok On Stone Foundation?

You can use DRYLOK on stone foundation, but you will need to use a primer first. DRYLOK is a masonry waterproofing product that can be used on most types of masonry, including concrete, brick, and stone.

How Do You Repair An Outside Stone Foundation?

Foundations are built to last, but even the sturdiest foundation can develop cracks or settle over time. If you notice any cracks or settling in your stone foundation, it’s important to have a professional assess the damage and determine the best repair solution.


There are many ways to seal a stone foundation. The most common is to apply an asphalt emulsion to the foundation and then seal it with a coat of asphalt primer.

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