
Painting the inside of a fireplace is an easy, inexpensive way to upgrade your space. It is important to use the right paint, especially one that is heat-resistant and can withstand high temperatures. The process involves cleaning and preparing the surface, priming, and then painting with a brush or roller. This simple project can give your fireplace a modern look or a fresh, new feel.
| Characteristics | Values |
|---|---|
| Cost | Inexpensive |
| Time | Quick |
| Tools | Wire brush, vacuum, sponge, painter's tape, drop cloth, paintbrush, paint roller, safety goggles, gloves, mask, degreaser, trisodium phosphate, heat-resistant specialty paint, high-heat paint, spray paint, paint cans |
| Process | Clean the surface, prime the surface, apply paint |
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What You'll Learn
- Preparing the surface: Clean the bricks and mortar with a wire brush, removing any loose debris
- Deep cleaning: Use a degreaser to remove soot and residue, then rinse with water
- Priming: Apply a high-quality primer with a roller, ensuring full coverage
- Painting: Use a brush for detailed areas and a roller for larger areas, allowing for even coverage
- Curing: Let the paint dry completely before adding another coat or using the fireplace

Preparing the surface: Clean the bricks and mortar with a wire brush, removing any loose debris
Painting the inside of a fireplace is a great way to refresh your space. It is a simple project that can deliver big results with relatively little effort. However, the key to achieving the best results is to properly prepare the surface before painting.
To prepare the surface of your fireplace for painting, start by thoroughly brushing the bricks and mortar with a stiff wire brush. Pay special attention to the mortar lines between the bricks to remove any loose debris. This step is crucial, as it ensures that the paint will adhere properly to the surface and creates a smooth finish. Use a wire brush to dislodge any built-up soot, grime, or mineral residue on the bricks and mortar. This process will help you achieve an even paint application and a professional-looking finish.
Once you've removed the loose debris with the wire brush, it's time to give the bricks a deep clean. This step is essential to ensure that no soot, grease, or mineral residue is left on the bricks, as these could affect the paint's adhesion and appearance. Use a powerful cleaner or degreaser diluted with water, such as Insl-X® All-Purpose Citrus Cleaner or a solution of soap and water. Apply the cleaner to a sponge and thoroughly rub it into the entire brick surface. Then, wipe the bricks with a clean sponge and fresh water to remove any remaining cleaner or residue. Always conduct a spot test on a small area first to ensure the cleaner doesn't cause discolouration.
After cleaning, carefully remove all dust from the surface and the surrounding floor using a vacuum with a brush attachment. This step ensures that no dust or debris remains that could interfere with the paint application. It is important to wear personal protective equipment (PPE), such as gloves, eye protection, and a mask, during the cleaning and painting process to protect yourself from dust and chemicals.
Before you begin painting, take the time to inspect the mortar for any necessary repairs. Ensure that the mortar is in good condition and doesn't require any touch-ups. By thoroughly preparing the surface of your fireplace, you'll create a smooth canvas for your chosen paint colour, ensuring a long-lasting and aesthetically pleasing finish.
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Deep cleaning: Use a degreaser to remove soot and residue, then rinse with water
Painting the inside of a brick fireplace is a simple project that can deliver a big impact with relatively little effort. However, it is important to properly prepare the surface before painting. This includes cleaning the fireplace to remove any soot or residue that could affect the primer and topcoat.
Deep cleaning the inside of a fireplace involves removing any loose debris and then giving the brick a thorough wash to remove any accumulated soot or residue. This can be done using a powerful cleaner/degreaser and a sponge, followed by a rinse with clean water.
Firstly, use a stiff wire brush to clean the debris from the fireplace brick and mortar, paying special attention to the mortar lines for any loose material. Be sure to inspect the mortar for any necessary repairs before moving on to the next step. Once the brushing is done, carefully remove all dust from the surface and floor using a vacuum with a brush attachment.
Next, it is time for a deep clean to remove any accumulated soot or other mineral residue. Try a biodegradable, phosphate-free concentrate that you dilute with water, such as Insl-X® All-Purpose Citrus Cleaner, or a solution of soap and water. Be sure to do a spot test first on a small area to ensure the cleaner does not cause discolouration. To wash the front of the fireplace, thoroughly rub the cleaner into the entire brick surface with a sponge, then wipe it with a clean sponge and fresh water.
If any soot or other residue remains, a degreaser or trisodium phosphate can be used for a deeper clean. Bricks are porous and absorb a lot of water, so allow them to dry for 24 hours before priming and painting. This deep cleaning step is crucial when painting a brick fireplace as it prevents dirt and debris from causing the paint to chip or peel over time.
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Priming: Apply a high-quality primer with a roller, ensuring full coverage
Before priming, it is important to clean the fireplace thoroughly. Use a stiff wire brush to clean the debris from the fireplace brick and mortar, paying special attention to the mortar lines for loose material. Remove all loose debris, then give the brick a deep clean to remove any accumulated soot or other mineral residue that could affect the primer and topcoat. Try a biodegradable, phosphate-free concentrate that you dilute with water, such as Insl-X® All-Purpose Citrus Cleaner, or a solution of soap and water.
Once the brick is clean and dry, it's time to prime. Use a high-quality primer and a roller to apply two coats. Brick can be very porous, so be sure to use a roller cover that’s designed for textured surfaces. Use painter's tape and a drop cloth to keep walls and floors clean while you work. Allow the primer to dry fully overnight before painting.
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Painting: Use a brush for detailed areas and a roller for larger areas, allowing for even coverage
Painting the inside of a fireplace is a great way to upgrade your space. It is a simple, inexpensive project that can make a big impact. Here is a step-by-step guide to help you through the process:
Clean the Fireplace:
Use a stiff wire brush to clean the fireplace, paying special attention to the mortar lines and brick surface. Remove any loose debris, soot, or mineral residue. You can use a degreaser or a solution of soap and water for a deeper clean. Be sure to wear protective gear, such as gloves, eye protection, and a mask, during this process.
Prepare the Area:
Use painter's tape to protect the edges of your fireplace and any surrounding areas you want to keep paint-free. You can also use a drop cloth or cardboard to cover nearby surfaces and floors.
Prime the Surface:
Apply a high-quality primer to the cleaned and dried surface of the fireplace. Use a paint roller with a thick-nap roller cover designed for textured surfaces. Allow the primer to dry fully, following the manufacturer's instructions. For lighter paint colours, consider applying two coats of primer.
Painting:
Use a brush for detailed areas such as the mortar lines and any cracks or crevices, and then use a roller for larger areas like the face of the bricks. This will ensure even coverage and a consistent finish. Apply light layers of paint to help with even coverage and dry times. Most paint products will require two coats for the best results.
Remember to always refer to the specific instructions and recommendations provided by the paint manufacturer, especially regarding curing times and heat applications.
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Curing: Let the paint dry completely before adding another coat or using the fireplace
Painting the inside of a fireplace is a great way to update your space without a full renovation. However, it is important to let the paint cure completely before using the fireplace or adding another coat of paint. Here are some detailed instructions to ensure a successful paint job:
First, it is crucial to select the right paint for the job. For the inside of a fireplace, a heat-resistant specialty paint is required. These paints are formulated to handle high temperatures and flames. Be sure to read the labels carefully, as some paints labelled for high heat are not intended for direct flame exposure. Avoid using oil-based or latex-based paints, as these are typically flammable and have lower heat resistance.
Once you have selected the appropriate paint, the curing process begins with proper preparation. This includes cleaning the fireplace to remove any debris, soot, or residue that could affect the paint adhesion or cause discolouration. Use a stiff wire brush to scrub the fireplace, paying special attention to the mortar lines and any cracks or crevices. After brushing, a deep cleaning with a degreaser or a solution of soap and water is recommended. Be sure to spot test any cleaning agents in an inconspicuous area to ensure they do not cause discolouration.
After cleaning, it is essential to allow the fireplace to dry completely before priming and painting. Bricks are porous and absorb a lot of water, so adequate drying time is crucial. Once the fireplace is dry, apply a high-quality primer using a paint roller. For best results, allow the primer to dry overnight.
Now, you are ready to begin painting. Use light layers of paint to ensure even coverage and faster drying times. Allow the paint to dry for at least two hours before adding another coat. This waiting period ensures that the paint is fully cured and can withstand the heat of the fireplace without damage.
By following these instructions and allowing adequate curing time, you can achieve a long-lasting and impactful paint job on the inside of your fireplace.
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Frequently asked questions
You should use a heat-resistant specialty paint. Avoid using oil-based or latex-based paints as they are considered flammable.
First, use a stiff wire brush to clean the mortar lines and bricks of your fireplace. Then, use a shop vacuum to remove dust from the fireplace and the surrounding area. Finally, use a degreaser to clean the brick thoroughly.
You can use a paintbrush or a roller to apply the paint. If you are using a spray can, use short sweeping motions approximately 12" from the surface you are painting.
Allow at least two hours of dry time before adding your next coat of paint.








































