How Do I Install Hearth Stones? (Explained)

If you want to give your fireplace an authentic look and feel, hearth stones are the way to go. Not only do they add ambiance and character, but they also make your home more energy efficient by helping to retain heat in the room. 

The best part about installing them is that it’s easy enough for anyone with a little DIY experience—and we’re here to help!

How to install a hearth for your fireplace – YouTube
Takeaways
1. Hearth installation requires careful consideration of materials, dimensions, and local codes.
2. Hearth stone installation involves several steps, including measuring, preparing the base, laying the stones, and finishing.
3. There are different types of materials that can be used to make a hearth, such as concrete, stone, brick, or tile, with each having its own benefits and drawbacks.
4. It’s important to ensure that your hearth installation is safe and meets local regulations, which often requires the help of a professional.
5. Proper maintenance of your hearth can help prolong its lifespan and improve safety, requiring regular cleaning and inspections for any potential damage.

What Are Hearthstones?

Hearth stones are essentially a type of stone that can be used for many purposes. They’re often used to create pathways, but they can also be used in the construction of walls and floors.

Hearth stones come in many different sizes, shapes and colours. They are made from natural materials such as granite or limestone, so they can add beauty to your home while also providing practical functions such as increasing insulation value or creating pathways around your property.

When it comes to hearth installation, there are plenty of options to choose from. Our article on What Can You Use as a Hearth? explains some of the most popular materials for creating a hearth and their pros and cons, making it easier for you to decide which one is best for your needs.

Locate The Flue

Now that you’ve got your hearthstones, it’s time to install them! The first step is locating the flue.

  • Use a flashlight to illuminate the area. This will help illuminate any obstructions in your path.
  • Look for fire hazards. Are there any wires or other potential hazards in this space? If so, make sure to move them out of the way before proceeding with installation.

Preparing The Floor

The first thing you’ll want to do is sweep the floor. This will ensure that any debris or dust is gone, and it will also help smooth out your hearth stones’ surface. 

Next, you’ll need to make sure the floor is level. If there’s an uneven spot in your floor, you can use a piece of plywood or something similar under each hearth stone so they sit evenly on top of one another.

If you’re interested in making your own hearth for your home, our step-by-step guide on How Do You Make a Hearth can help you get started. From choosing the right materials to installing a fireproof lining, this guide offers all the information you need to build a beautiful and functional hearth

Plan The Installation

The first step to installing your hearth stones is to plan the layout of them. This will ensure that you are able to place them in a way where you can both see and enjoy them as much as possible, while still having space for other furniture in your home.

In order for this process to work, it’s important that you measure the area where you want your hearth stones to go and ensure that:

  • The area is level (or close enough) so that the stones won’t wobble when they are put into place
  • The area is spaced far enough apart from walls or other pieces of furniture so that people can walk around them comfortably
Steps for Planning a Stone InstallationConsiderations
Measure the area to be covered and determine the square footageMeasuring tape, calculator
Decide on the type of stone, shape, color, pattern, and textureStone samples, design or style guide
Determine the necessary quantity of stones, including any waste, cuts, or extras neededCalculation of square footage, additional 10-15% for waste
Identify any special requirements, such as edging or detailsSketch or drawing, brand specifications
Create a layout plan, including the placement of stones, joints, borders, and featuresGraph paper or design software, measuring tape
Consider the installation method and tools needed for the jobBrand-specific installation guide, tool recommendations, safety equipment
Prepare the surface and any necessary materials or equipment before beginning the installationShovel, rake, level, mortar, trowel, mixing bucket, saw, chisel, hammer

Mixing The Mortar

Mortar should be mixed in a wheelbarrow.

First, you’ll need to add water to the dry mix of sand and cement. You can use a shovel or hoe to mix this together; just make sure it’s thoroughly blended. 

The standard ratio is one part sand to two parts cement by weight (for example, for every bag of mortar mix you have, add one cup of water). If you’re using a premixed product like Quikrete’s Ready-Mixed All-Purpose Mortar, that may have its own instructions on how much water it takes—check their website for details!

Next up: color! You can buy ready-to-use colored cement at the hardware store in bags or buckets. Just add some powder with your basic gray stuff and stir until everything is blended together nicely again.

Muddying The Base

After you’ve laid your first course of stones, it’s time to muddle the base. This is a process that helps ensure a good bond between the mortar and stone.

The type of mortar used for this step depends on whether you’re working with concrete or brick pavers. 

If you’re using concrete pavers, use an epoxy-based type of muddying mix; if you’re working with brick pavers, use a Portland cement-based mix instead.

Before mixing up any mortar for this step, make sure that it has enough water in it to be workable but not so much that it becomes runny and difficult to apply—you’ll want it thick enough that when applied evenly over your stones’ faces they’ll adhere well and stay put while still remaining easy enough to smooth out into an even layer without breaking apart too much (which may result in gaps between stones). 

Using too much water will cause problems later down the line when trying to level out any uneven areas or fill cracks between each stone individually after they’ve been set in place!

Properly laying a hearth can be a challenging task, but our article on How Do You Lay a Hearth? shares some expert tips and tricks to help you get it right. From leveling the base to using the right adhesive, these practical insights can make a big difference in the quality and durability of your hearth installation.

Setting And Finishing The First Row Of Stones

Check your work with a level. Make sure the hearth is flat and level before you start the final installation. If it’s not, you can use shims to make it so, or add another layer of mortar to fill in dips and bumps.

Spread mortar on the hearth using a trowel (or other wide tool). You will want a generous amount of mortar—about ½ inch thick—so that there’s enough left behind when you lift off each stone for them all to stick together well before they’re set into place by gravity alone!

Set stones into place one at a time from the middle outwards, working quickly but carefully so as not to chip or damage any edges of your individual pieces (you’ll have plenty of time later on for this step). 

Setting and Finishing the First Row of Stones

Steps for Setting and Finishing the First Row of StonesTools Required
Measure and mark out the area for the first row of stonesMeasuring tape, stakes, and string
Prepare the surface by cleaning it of debris and leveling it outShovel, rake, and a level
Dry-lay the stones in the desired pattern and make any necessary cuts or adjustmentsMasonry saw, chisel, and hammer
Mix the mortar according to the manufacturer’s instructionsMixing bucket, trowel, and drill with a mixing attachment
Apply a layer of mortar to the prepared surface and begin placing the stones, using a spirit level to ensure they’re level and properly spacedTrowel, spirit level, and rubber mallet
Adjust the stones as necessary and cut them to fit at the end of the row, if neededMasonry saw or angle grinder with a diamond blade, chisel, and hammer
Finish the row by filling any gaps with mortar and smoothing out the joints with a tuck pointer or jointerTuck pointer or jointer, and sponge or brush

Setting and finishing the first row of stones is an important step in any stone installation project. By following these steps and using appropriate tools, such as a mixing bucket, trowel, and spirit level, you can create a strong, level, and attractive base for your stonework.

The specific tools needed may vary depending on the type of stones and the desired pattern or style, but some common tools include a masonry saw, chisel, hammer, and rubber mallet.

Setting Stones In A Row

Now that you have your stone, it’s time to install them. There are a few ways that you can lay the stones in a row:

Laying stones on end. This is a good option if your natural stone has an uneven surface and you want to hide some of those bumps and crevices.

Laying irregular-sized stones. If your natural stone doesn’t have any large gaps between pieces, this could also be a good option for laying irregular-sized pieces as well as smaller ones on end.

Leveling each piece individually before installation. This method allows for more control over how each piece is installed, but it takes longer than other methods because every piece must be leveled before installation (which involves measuring and marking).

The best way to determine which method is right for your project depends on how much effort you want to put into leveling each individual stone before installation (and whether or not there are any larger gaps between pieces). Once you decide which method works best for your project, simply follow these instructions:

Building a solid base is an essential step in the hearth installation process, and our easy guide on How Do You Build a Hearth Base? offers all the information you need. With detailed instructions and helpful visuals, this guide breaks down the process into simple and easy-to-follow steps that even DIY beginners can tackle.

Setting Stones On End

If you are laying stones on end, it’s best to lay the end row on a flat surface so that all of the stones are even and level. Next, lay the next row right on top of this one. This will help keep everything in place as you work your way up.

Now comes the fun part: setting each stone on end, with its flat edge facing up (this is very important!). You can do this by hand or with a trowel depending on your preference and skill level. Set them evenly apart from one another—and make sure not to leave any gaps between them!

Finishing Off The End Of A Row.

For the last row of stones, it’s important to build a cap that is level and flush with the rest of your hearth. To ensure this, use a level and make sure that both sides are even before installing any mortar.

If you find that your cap isn’t flush with the wall or has gaps between stones, use a rubber mallet to gently tap them into place until they’re snug against each other and against the wall.

Laying Vertical Stones

  • Lay the stones vertically.
  • Use a level to make sure the stones are straight and in line with each other.

Make sure you have the right mortar mix for vertical stones. It should be more stiff than for laying on a flat surface, so it will hold its shape longer without cracking or falling apart before drying completely.

Make sure you have enough mortar to fill in any gaps between your hearth stones when they’re laid out vertically; this will help prevent them from moving around once installed, which could cause them not to fit together seamlessly when finished!

Laying Vertical Stones

Steps for Laying Vertical StonesTools Required
Mark out the area for vertical stones using string and stakesString, stakes, and a measuring tape
Prepare the surface by removing any debris, leveling the ground, and applying a layer of sand or gravelShovel, rake, and a compacting tool
Install the cornerstones first, using a spirit level to ensure they’re plumbSpirit level, mallet, and chisel
Build up the rest of the wall by alternating large and small stones, ensuring they’re level and plumbMallet, chisel, and spirit level
Cut and fit stones as needed to fill gaps or create custom shapes or sizesMasonry saw or angle grinder with a diamond blade
Finish the top of the wall with coping stones or a cap, and fill any remaining gaps with mortar or stone dustTrowel, mortar mix, and stone dust

Laying vertical stones requires careful planning and attention to detail to ensure a precise and stable result. By following these steps and using the right tools, such as a spirit level, mallet, chisel, and masonry saw, you can create a beautiful and long-lasting wall or feature using vertical stones.

Laying Irregular Stones

If you’re laying irregular stones, the process is similar to that for regular bricks. First, check the level of your surface and add or remove dirt as needed until it’s perfectly level. 

Then use a plumb bob to determine the exact center point, making sure that it’s perfectly centered on all sides (including top and bottom). 

Once you’ve found this spot, mark it with chalk so that all subsequent measurements are made from there. Finally, align laser levels to ensure accuracy while laying out the stones around this center point—don’t forget to take into account any curves or bends in your designs!

Creating a hearth pad is an important part of any hearth installation project, and our DIY guide on How Do You Make a Hearth Pad? is here to help. From choosing the right materials to building a support structure, this guide walks you through the process step by step, ensuring your hearth pad is both functional and appealing.

Conclusion

If you’ve followed these steps, then your hearthstone is well on its way to being installed. You should now have a good idea of how to install a hearthstone. 

Just remember to take your time and be patient with yourself. You don’t want this project turning into an overwhelming experience or one that takes too much time away from other important tasks in your life.

Further Reading

Here are some additional resources that you may find helpful for learning more about hearth installation:

How to Install a Hearth on a Fireplace: This comprehensive guide covers everything from choosing the right materials to laying the hearth and finishing the installation to ensure a stylish and functional result.

Fireplaces Southwest: Hearth Installation Guide: This guide provides helpful tips on how to measure and prepare for hearth installation, as well as detailed instructions on installing a concrete or stone hearth.

Fireplace Universe: Fireplace Hearth Guide: This guide offers an overview of different types of fireplace hearths, their installation and maintenance, and how to choose the right one for your home.

FAQs

What materials are best for a hearth?

Some common materials used for hearths include concrete, stone, brick, or tile. Each material has its own advantages and disadvantages, and the best choice for your hearth will depend on your specific needs, such as style preference, budget, durability, and maintenance.

Do I need a professional to install a hearth?

While it’s possible to install a hearth on your own, it’s recommended to have a professional handle the job, especially if you don’t have experience in construction or masonry work. Professional installation can ensure that your hearth is installed safely and meets local codes and regulations.

How do I measure for a hearth?

To measure for a hearth, you should start by measuring the width and depth of the firebox opening, and then add several inches on all sides to determine the final dimensions of the hearth. You should also consider the thickness of the hearth and how it will fit with any existing flooring or trim.

What is the purpose of a hearth pad?

A hearth pad serves as a protective barrier between the fireplace and the surrounding flooring. It can help prevent heat damage, improve safety, and enhance the overall look of the fireplace.

How can I maintain my hearth?

To maintain your hearth, you should clean it regularly with a soft-bristled brush or vacuum to remove dust and debris. You should also inspect it periodically for any cracks, stains, or damage that may need repairs. Additionally, avoid placing hot items or heavy objects on the hearth that could cause damage.