Replacing Damaged Bricks Measure the length of the damaged irregular bricks in the chimney. Mark the measurement of the old bricks on your new brick using a marker. Put on safety goggles and work gloves. Insert a brick set into the groove, and strike the end with the hammer to split the brick at your mark. The most common chimney problems are a result of cracks, whether in the bricks and mortar or in the crown. Chimney repairs average $200 - $400 and roughly $2, 000 - $10, 000 to replace completely. How to Repair Chimney Mortar prev. apply mortar to crown. use mortar to seal up any holes around crown. prev. apply mortar to the joint. clear away excess mortar. install cap and screen at top of chimney. Install a Cap and Screen. To complete the project, and to prevent rain water from entering the flue, install a cap and screen at the top of the chimney. A mason or handyman will charge $799 to repoint loose chimney mortar on a good sized chimney, about 150 square feet, which includes the labor and material; but you can do the job for $165, which covers the cost of the materials and renting the scaffolding needed. Common chimney work like masonry repair, damper repair or chimney cover replacement in general are not covered by homeowners' insurance policies. When the repairs are part of normal wear and tear insurance companies again see this as a homeowner's responsibility in operating the fireplace and chimney safely.
How long do chimney liners last? The answer to this question depends on the type of chimney liner you have. Clay tile liners and cast-in-place liners typically last around 50 years. Stainless steel flue liners generally last for 15 to 20 years (though low quality liners may not even last for five).
Repoint Your Chimney Brick Mortar Use your joint raker to scrape out loose, weak mortar. For more difficult crumbly mortar, gently tap it out with your hammer and chisel. With your wire brush, sweep out all remaining bits of mortar. Spray down the brick with the garden hose, and let it sit for 30 minutes.
Repointing is the actual process of removing damaged mortar joints and renewing them. Tuckpointing is similar, but is not always completed for damage control. Tuckpointing involves using two different shades of mortar to fill in mortar joints of brickwork.
Homeowners may repair eroding brick by patching over the old mortar without removing the crumbling sections. This process is called tuck pointing, but it is not a long-term repair for eroding brick walls. Do not leave any loose or spongy sections of mortar between the joints. If these remain, they can ruin your repair.
Chimneys should be lined. The National Fire Code states that a liner can be built of brick, clay or steel. Most homes built in the past 50 years have a clay liner for a wood-burning appliance. Well, the fire code requires that a chimney be repaired or replaced if it constitutes a fire hazard.
The short answer is that yes, you can use stucco to repair a brick chimney. First, make sure you clean out the chipped brick to leave a sturdy foundation, with no loose pieces. Second, you'll want to apply a concrete bonding agent to the brick foundation.
Cracked tiles can lead to dangerous gas leakage allowing carbon monoxide to seep into the home's interior. It can also allow deadly heat transfer to combustible materials in the surrounding areas increasing the risk of home fire. Cracked tiles often occur when heat is not evenly disbursed throughout the chimney.
For a small area of 12 to 24 bricks, replacement by a professional can cost $250 to $350 for labor, in addition to the cost of the bricks themselves. However, if the area is larger than that, the cost of replacement will be larger as well. Brick prices vary based on the type and the quantity needed.
Bricks are constantly exposed to the elements. If a brick is broken or cracked, it should be replaced to prevent moisture from seeping into your walls. You need a few specialty tools, but these will cost less than hiring a mason to do the job. Here's how you can go about replacing a damaged brick.
Tom Silva replies: You can fill those holes with a colored acrylic caulk that's close to the color of your brick. But to get an exact match, try this trick: Drill a shallow hole in one of your bricks at an unobtrusive spot using a¼-inch masonry bit. Collect the dust.