Firebox Repair | Firebox Rebuild | Between our masonry technicians and chimney technicians you get the best of both worlds and craftsmanship for repair and rebuild fireboxes in the New Jersey area. Squeeze the high-heat mortar into the crack as far as possible. Historical Restoration and Safety is our utmost concerm. The firebox is the part of the fireplace where the wood is placed in order to make a fire. Package Contents. Once cured, the mortar provides superior adhesion for a durable repair while withstanding temperatures up to 2,000 F. The most widely used code, the International Residential Code (IRC), for example, states that firebrick “shall be laid with medium-duty refractory mortar conforming to ASTM C 199.” Approximately 35 to 40lbs. Measure the firebox for height, width and depth. You can wear latex or nitrile gloves to keep your hands clean if you wish. Rake out the existing mortar in the firebox with a hand rake and discard it. Masonry Repair. For factory built fireplaces with installed fire brick panels, contact the Fireplace Manufacturer for instructions on replacement/repair. The most common damage would be loose mortar joints. Fireplaces take a lot of punishment over the years. Water Intrusion – There are many entry points for water leaks including a cracked or deteriorated chimney crown, missing chimney cap, defective flashing and damaged or missing mortar joints. The deteriorating mortar on the floor of your firebox is almost certainly a portland-cement mortar. You will need to repoint your joints as needed throughout the life of the fireplace depending on the amount of use it sees. If the firebox has cracked bricks or deteriorating mortar joints, it needs to be rebuilt with new fire bricks and high temperature refractory mortar; thereby restoring the structural integrity. The existing material will have a bearing on how you replace the firebox. Pointing/joint repair – If your masonry firebox has cracked, loose or crumbling joints, experienced Mason’s Chimney Service technicians may recommend pointing work to repair those joints. Step 6 – Allow for Drying Allow the mortar to dry completely for … It can be easiest to caulk all vertical joints first, followed by the horizontal joints. Click to see full answer Subsequently, one may also ask, how do you fix a crack in a firebox? The water stains in this brick fireplace firebox testify to a water penetration problem at the chimney level. Products that will directly be in contact with the high heat, should be made of refractory cement. Let this guide you through the various tools of work and material you need for the task. However, the repair isn’t easy, especially if DIY is not your thing. Firebox Repair & Installation. If you ever see firebox mortar joints that are very deteriorated and falling out then it is because the Portland cement that regular mortar and even fireclay mortar is composed with will break down as it cools through 600 F. Eventually, the bonding Portland material decomposes and all that is left is the sand and fireclay with no cement binder. Non-asbestos. The washing also dampens the brick and mortar, a necessary step before repointing. Fill the Joints With Caulk. In a masonry fireplace, firebrick is used to construct the firebox. Type. Clean out the crack with the edge of the putty knife or with the screwdriver. Smooth the caulk with your finger to remove excess caulk and to seal the caulk to the edges of the brick. Smooth the surface of the repair with your hands and push the mortar more deeply into the cracks. QUIKRETE® Fireplace Mortar (No. Over time, the bricks and mortar can fail due to the expansion and contraction of the materials as they go from room temperature to roughly 700 degrees Fahrenheit and back again. Cracks in the masonry of the firebox can be dangerous since smoke and hot gasses can seep through the openings … Place your sheet of plywood in the work area or the wheelbarrow. Use this cement anywhere a quality high-temperature adhesive is required for furnaces, firebrick repair, filling gaps, sealing joints, or gluing ceramic logs. A firebox is usually made of brick, stone, or metal. Pointing is detailed work, involving the removal of damaged mortar and replacing it with the right materials for function and aesthetics. Clean out the mortar joints by sucking out the debris with the shop vacuum or blowing it out with a can of compressed air. Small gaps in mortar can be repaired with a special high-temperature caulk called refractory caulk. Then, thoroughly vacuum the walls and floor of the firebox again. Insert the caulk into the caulking gun, and cut the tip of the caulk tube as directed by the manufacturer. Crumbling masonry can weaken the overall structure of the firebox and lead to further damage. It's natural to assume that something other than the usual masonry mortar might be required for such a specialized application. Mailboxes. Chip Out Loose Mortar Position a flat utility chisel at the edge of the brick and drive it toward the relief cut to fracture and remove the mortar. Consider hiring a professional mason to repair missing chunks of brick and mortar, which may be damaged beyond the capabilities of fireclay to fix. Place the gravel and sand into the wheelbarrow or onto the plywood. As a homeowner preparing for the winter, you want a perfect firebox and chimney mortar repair that rejuvenates the warmth and beauty of your fireplace.

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