Project Overview
This scope covers waterproofing work including excavation, membrane application, drainage installation, and interior waterproofing systems. Applicable to basements, foundations, and below-grade structures.
Typical Projects Include:
- Basement waterproofing (interior or exterior)
- Foundation membrane installation
- French drain installation
- Sump pump installation
- Crawlspace encapsulation
- Leak repair and injection
Scope of Work
Assessment & Prep
| Task | Description |
|---|---|
| Water Intrusion Assessment | Inspect the property to identify water entry points, sources, and the best waterproofing approach. |
| Excavation | Excavate around the foundation to expose the wall for exterior waterproofing (if exterior approach). |
| Interior Prep | Remove finished materials from basement walls and floor as needed for interior waterproofing systems. |
| Surface Prep | Clean and prep foundation walls — remove old coatings, dirt, and loose material. |
Waterproofing Installation
| Task | Description |
|---|---|
| Membrane Application | Apply waterproofing membrane to foundation walls — liquid-applied, sheet membrane, or spray-on. |
| Drainage Board | Install drainage board over the membrane to protect it and channel water to the footer drain. |
| Footer Drain | Install perforated drain pipe at the base of the foundation. Route to sump pit or daylight. |
| Sump Pump | Install sump pit and pump. Connect to discharge line routed away from the foundation. |
Restoration & Closeout
| Task | Description |
|---|---|
| Backfill | Backfill the excavation with approved material. Grade away from the foundation. |
| Interior Finish | Install interior drainage channel along the basement perimeter (if interior system). Pour new concrete over channel. |
| Testing | Test the sump pump and drainage system. Verify water flows correctly through the system. |
| Documentation | Provide warranty documentation and maintenance instructions for the waterproofing system. |
Timeline & Milestones
Interior waterproofing takes 2-4 days. Exterior waterproofing with excavation takes 3-7 days.
| Phase | Duration | Description |
|---|---|---|
| Assessment & Prep | 1-2 days | Inspection, excavation or interior prep. |
| Waterproofing | 1-3 days | Membrane, drainage, and sump pump installation. |
| Restoration | 1-2 days | Backfill, interior finish, and testing. |
Roles & Responsibilities
Property Owner
- •Clear basement or crawlspace for access
- •Provide information about water history and patterns
- •Maintain the system after installation (sump pump checks)
- •Process payments per the agreed schedule
Waterproofing Contractor
- •Assess the water intrusion and recommend solutions
- •Install the waterproofing system
- •Test the system before closeout
- •Provide warranty and maintenance instructions
Materials & Equipment
Waterproofing
- •Waterproofing membrane (liquid or sheet)
- •Drainage board
- •Crack injection resin (epoxy or polyurethane)
- •Hydraulic cement
Drainage
- •Perforated drain pipe
- •Drainage gravel
- •Sump pit and pump
- •Discharge pipe
Equipment
- •Excavator (for exterior work)
- •Concrete saw (for interior channel)
- •Spray equipment for membrane
- •Jackhammer
Quality Control Standards
Complete Coverage
Waterproofing membrane covers 100% of the specified area with no gaps or holidays.
Drainage Function
Water flows freely through the drainage system to the sump or daylight. No blockages.
Dry Result
No water intrusion after system installation. System handles the water volume present.
Safety Protocols
Excavation Safety
Follow OSHA trenching requirements when excavating around foundations.
Confined Space
Crawlspace work may be a confined space entry. Follow proper protocols.
Chemical Safety
Use waterproofing chemicals in ventilated areas. Follow product safety requirements.
Project Documentation
- Signed contract and scope of work
- Water intrusion assessment report
- Waterproofing system specification
- Product data sheets
- System test results
- Transferable warranty certificate
Financial Terms
Payment Structure
Waterproofing projects are typically billed with deposit and completion payments.
Terms & Conditions
- •Deposit due at contract signing (typically 30-50%)
- •Final payment due after system testing and completion
- •Exterior excavation is more expensive than interior systems
- •Unexpected conditions (buried tanks, utilities) are change orders
- •Financing may be available
Acceptance Criteria & Sign-Off
The project is considered complete when the following criteria are met:
- 1Waterproofing membrane applied with complete coverage
- 2Drainage system installed and functional
- 3Sump pump tested and operational
- 4No active water intrusion after installation
- 5Excavations backfilled and graded (exterior)
- 6Warranty documentation provided
Frequently Asked Questions
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