From the high-rise chases of Las Colinas to the mid-century homes of central Irving, we repair cracked fireboxes before they become a fire hazard.
Irving's chimneys work harder than most people realize. In Las Colinas and Valley Ranch, tall stucco and EIFS chases stand exposed to hail and wind-driven rain year-round, while in historic downtown Irving and the older neighborhoods nearby, mid-century masonry fireboxes have been absorbing heat cycles and shifting clay soil for decades. Either way, when firebrick cracks or the refractory mortar between joints starts to crumble, the firebox stops doing its most important job: keeping fire and heat safely contained. Lowes Chimney Sweep repairs cracked masonry fireboxes throughout Irving, seven days a week, with certified and insured technicians.
A masonry firebox is lined with firebrick and refractory mortar specifically rated to withstand direct flame contact — far higher heat tolerance than the standard mortar used elsewhere in the chimney. When that refractory mortar cracks or firebrick separates, heat can transfer directly to the surrounding brick, framing, or combustible materials behind the firebox wall. Small hairline cracks may look cosmetic, but they widen with every fire, and they're one of the more common reasons a routine chimney inspection turns into an urgent repair call.
Irving's housing stock tells two different stories. In Las Colinas and Valley Ranch, many chimneys sit inside tall, exposed stucco or EIFS chases that take the brunt of hail impacts and wind-driven rain — moisture that can work its way down through a compromised chase and eventually reach the firebox and smoke chamber. In central Irving and the older streets near downtown, mid-century masonry fireboxes were built with materials and mortar formulations that simply weren't designed to last this long, and decades of clay-soil movement beneath the foundation add stress that shows up as cracked joints and shifted brick. Whether your home is a newer build near Hackberry Creek or a longtime family home closer to downtown, the combination of Irving's weather swings and soil conditions means firebox cracks tend to show up earlier here than in more stable climates.
Repair starts with a close inspection of the firebrick, refractory mortar joints, and the surrounding smoke chamber to determine whether the damage is limited to repointing or requires replacing sections of firebrick. Our technicians use refractory mortar rated for direct flame contact — not standard mortar — and check for related issues like a damaged chimney crown or compromised chimney liner that may be letting water reach the firebox in the first place. If the chase itself shows hail damage, we'll flag that alongside the firebox findings so you have the full picture before any work begins.
Whether you're in Las Colinas, Valley Ranch, or central Irving, we can take a look before your next fire.
(214) 225-8874Every firebox repair is priced based on what our technicians actually find, not a flat number — there's no way to responsibly quote firebox work sight unseen. Factors that affect cost include how much firebrick needs replacing, whether the refractory mortar joints throughout the firebox need full repointing or just spot repair, access to the firebox and chase, and whether related components like the chimney cap or crown also need attention after storm damage common in the Las Colinas area. Services with Lowes Chimney Sweep start at $99, and every job in Irving includes an up-front quote before work begins — no surprises. Request your Free Online Quote today, or read more on the warning signs of a cracked firebox and how hail damages chimney chases on our blog.
"Very pleased with the professionalism and promptness of service. The chimney sweep was done quickly and efficiently at significantly less cost than the first quote I got from another company. Happy to recommend Lowes Chimney Sweep to anyone in Plano!"
"Outstanding chimney sweep service from start to finish. They were punctual, courteous, and left our chimney spotless with no mess in our home. I won't use anyone else for chimney services in Dallas TX!"
More reviews from homeowners across the metroplex are on our reviews section, or learn more about our team before you book.
Discoloration is usually just soot or heat staining, but cracks show as visible gaps or separation between firebrick, or crumbling mortar joints you can see or feel. In older central Irving homes, it's common to find both discoloration and genuine cracking together, which is why a hands-on inspection matters more than a visual guess.
We recommend holding off on fires until the firebox is evaluated, since even small cracks can let heat transfer to combustible material behind the brick. This is especially important in Irving homes with additions or renovated great rooms near the fireplace wall.
Yes, indirectly — hail and wind-driven rain often damage the chimney crown or chase cover first, especially on the tall exposed chases common in Las Colinas, and water then works its way down toward the smoke chamber and firebox over time. That's why we check the crown and chase whenever we're called out for firebox cracking.
No, this service is specifically for traditional masonry fireboxes built with firebrick and refractory mortar, not prefab metal fireplace panels. If you have a factory-built insert, the repair approach and parts are different, so let us know your fireplace type when you call.
We serve Irving and the surrounding Dallas-Fort Worth area seven days a week, including Sundays, so scheduling is usually flexible. Call (214) 225-8874 and we'll get you set up with a Free Online Quote and an inspection time that works.
Straight answers from our DFW chimney pros before you book.
