Rowhouse foundations take a beating from our clay-heavy soil and century-old drainage systems. We address both symptoms and causes—installing carbon fiber straps on bowed walls while fixing grading issues that allow water pooling. For sinking front stoops in South Philly, we use polyurethane foam jacking that lifts slabs without destroying ornate ironwork.
Modern additions often settle differently than original structures. We install helical piers between dissimilar foundations to prevent cracks from reappearing. Every repair includes interior French drains or exterior waterproofing membranes, because dry basements start from the outside in.
Modern additions often settle differently than original structures. We install helical piers between dissimilar foundations to prevent cracks from reappearing. Every repair includes interior French drains or exterior waterproofing membranes, because dry basements start from the outside in.
Our Process
- 01 Step 1: Digital level survey to map settlement patterns
- 02 Step 2: Excavate problem areas with minimal disruption to sidewalks
- 03 Step 3: Inject high-density polyurethane for precise lifting
- 04 Step 4: Seal cracks with epoxy injection and install monitoring points
Benefits
- Stops doors/windows from sticking due to shifting
- Prevents water infiltration through cracks
- Preserves original architectural details
- Qualifies for FHA 203(k) renovation loans
Frequently Asked Questions
How long until I can use my stoop after repair?
Polyurethane injections cure in 15 minutes—you’ll have full access the same day.
Will this fix my uneven floors?
Moderate settlement yes, but severe cases may require sistering joists—we’ll advise after inspection.
Do you work with stone foundations?
Absolutely—we repoint with lime mortar and install internal drainage systems for pre-1900 homes.