Foundation Masonry Repair in Lemont, IL

Emerald Masonry LLC provides foundation masonry repair in Lemont, IL for homes from the village's older streets near downtown to its newer subdivisions. Lemont's housing covers more than a century, so its foundations vary widely: some older homes sit on stone foundations, while newer homes have concrete block or poured walls, many on sloped lots. We repoint stone foundations with soft, compatible mortar, repair cracked block walls, rebuild basement window openings and repair parging. Family-owned, licensed, bonded and insured, with free on-site assessments: (708) 288-1696.

On an old stone foundation, the mortar is meant to wear out before the stone does. Repair it with the wrong mortar and the stone starts to fail instead.

Foundation masonry repair in Lemont starts with knowing your foundation

Lemont grew around its limestone quarries in the 1800s, and its local stone was shipped across the region. Some older homes in the village sit on stone foundations, though not every old house does, and we confirm what yours is on site. Newer homes are almost all block or poured concrete. The repair depends on which you have:

| Foundation type | Where you see it in Lemont | How it usually fails | Typical repair | |---|---|---|---| | Stone (rubble or cut) | Some older homes near downtown and the older streets | Washed-out mortar, loose stones, damp walls | Repoint with soft lime-based mortar, reset stones | | Concrete block | Mid-century and many later homes | Stair-step cracks, horizontal cracks, leaks at joints | Repoint, replace cracked block, crack repair | | Poured concrete with block or brick above grade | Newer subdivisions | Cracks at basement windows, failed parging | Rebuild openings, repair parging, seal cracks |

Signs your Lemont foundation needs repair

• Mortar crumbling or missing between foundation stones or blocks.
• Loose or shifting stones in an older foundation wall.
• Stair-step cracks in block, especially at corners and below windows.
• Horizontal cracks or a wall that looks bowed inward.
• Parging that is cracked, hollow or falling off.
• Damp walls, efflorescence or water on the basement floor after rain.
• Rusted lintels or cracked block around basement windows.

Risks of waiting

Water is the main enemy of any foundation. Open joints and cracks let it in, and each winter freeze-thaw widens them. On stone foundations, mortar loss lets stones loosen and shift. On block walls, water and soil pressure turn small cracks into bowing. Repointing and crack repair caught early cost far less than rebuilding a section of foundation wall.

Lemont's sloped lots and foundation masonry repair

Lemont sits on the bluffs above the Des Plaines River valley, and many lots slope. On a sloped lot, runoff and groundwater move toward the uphill side of the house and press against the foundation wall there. That is why uphill walls on Lemont homes are often wetter and more cracked than the others. We look at where water comes from as well as at the wall itself: grading, downspouts, window wells and walk-out walls. A masonry repair lasts much longer when the water is redirected too.

How we repair foundations in Lemont

1. Identify the foundation type and inspect inside and out.
2. Trace the water from grading, downspouts and window wells to the wall.
3. Recommend the repair and tell you if an engineer should look first.
4. Repoint stone foundations with soft, lime-based mortar suited to old stone, resetting loose stones.
5. Repair block walls: repoint, replace cracked block and repair cracks.
6. Rebuild basement window openings and replace rusted lintels.
7. Repair parging on block and concrete with a mix compatible with the wall.
8. Walk you through the work and what to keep an eye on.

Materials we use

Lime-based mortar for stone foundations, mixed to be softer than the stone; Type N or Type S mortar for block, matched to the wall and its exposure; replacement block and stone; primed or galvanized steel lintels for basement windows; and compatible parging mixes. We do not put hard cement coatings on stone foundations.

What drives the cost of foundation masonry repair in Lemont

• Foundation type: stone, block or poured concrete.
• How much wall is affected and how deep the mortar loss goes.
• Type of repair: repointing, crack repair, block replacement, opening rebuilds or parging.
• Access, including walk-out walls, steep yards and tight side yards.
• Drainage work done alongside the masonry.

We give a written, itemized estimate after a free on-site assessment.

Lemont local context

Lemont's older homes are concentrated around the historic downtown and the streets climbing the bluff from the river. Newer subdivisions spread out toward Homer Glen and the forest preserves. For other masonry on your home, see our Lemont chimney repair page, how we handle foundation masonry repair in Homer Glen and Palos Park, and our guide to Chicagoland limestone.

Why Lemont homeowners call Emerald

Emerald Masonry LLC is a family-owned masonry contractor serving Chicago and the Chicagoland suburbs, led by career masons with decades of hands-on Chicagoland experience, in foundation masonry repair, tuckpointing and repointing, chimney repair, brick repair and replacement, lintel and limestone sill repair, caulking, sealing, and residential, commercial and historic masonry restoration. Free on-site assessments — call (708) 288-1696.

• Established 2024, led by career masons who do the work themselves.
• Licensed, bonded and insured; certificate of insurance on request.
• Right mortar for the wall. Soft mortar for old stone, the right mix for block.
• Water first. We fix the cause, not just the crack.

For more detail, read basement water: masonry or drainage? and foundation parging. Related services: foundation masonry repair, tuckpointing and historic masonry restoration.

Foundation problems in Lemont? Call (708) 288-1696 or book a free on-site assessment.