Whole-House PEX Repipe Proposal Template
Turnkey plumbing proposal scope for replacing corroded galvanized pipes or leaking CPVC/polybutylene with cross-linked polyethylene (PEX-A) piping.
Complete Scope of Work
Copy or customize these verbatim specifications into your contractor proposal.
1. System Isolation & Existing Pipe Abandonment
Disconnection of legacy pipe network.
- Isolate building main water supply and install new lead-free ball valve main shutoff with drain.
- Drain existing galvanized, polybutylene, or pinholed copper piping throughout the structure.
- Abandon old piping in wall cavities without disturbing asbestos or structural elements.
2. New PEX-A Water Distribution Network
Rough-in of modern hot and cold supply lines.
- Install new 1-inch and 3/4-inch PEX-A main trunks with 1/2-inch home-run branches to all fixtures.
- Use ASTM F1960 cold-expansion fittings (ProPEX) for maximum flow velocity and zero constriction.
- Secure all PEX tubing with insulated suspension clips to prevent pipe knock, vibration, and water hammer.
3. Fixture Hookups & Quarter-Turn Stops
New valves and braided supply lines.
- Install new solid-brass quarter-turn emergency angle stop valves at all sinks, toilets, and ice makers.
- Install new stainless steel braided supply lines to all domestic plumbing fixtures.
- Install new frost-proof sillcock hose bibbs on building exterior.
4. Pressure Testing, Chlorination & Warranties
Code inspection, testing, and warranties.
- Pressurize entire new water piping system to 100 PSI with air or water for municipal inspection.
- Flush and disinfect new piping with potable water chlorination procedure per municipal code.
- 25-Year manufacturer PEX pipe and fitting limited warranty.
- 10-Year contractor leak-free installation warranty.
Standard Line-Item Material Allowances
Clear material specifications that protect against ambiguous scope arguments.
| Component / Assembly | Standard Specification | Unit / Allowance |
|---|---|---|
| PEX-A Potable Water Tubing | ASTM F876/F877 chlorine-resistant tubing (red/blue/white) | Linear Feet |
| ProPEX Expansion Fittings | ASTM F1960 engineered polymer and brass fittings | Per Fitting |
| Quarter-Turn Angle Stops | Lead-free chrome-plated brass ball valves | Per Fixture |
| Main Ball Valve & Pressure Regulator | Full-port brass ball valve + Watts pressure reducing valve (PRV) | 1 Assembly |
| Frost-Proof Hose Bibbs | Anti-siphon freeze-resistant exterior sillcocks | 1–3 Units |
Scope-Gap Protections: 3 Clauses to Include
These contractual gotchas account for 85% of change-order arguments on whole-house pex repipe proposal templates.
The Risk: Repiping requires cutting 10–30 access holes in sheetrock; homeowners are angry if surprised by unpatched holes.
Protective Clause: Proposal explicitly clarifies whether drywall patching and texturing is included or contracted to a third-party drywaller.
The Risk: Municipal pressure exceeding 80 PSI damages PEX fittings and appliance valves.
Protective Clause: Specifies installation of an inline pressure reducing valve (PRV) to maintain safe 55–65 PSI household pressure.
The Risk: Homeowners think 'whole house' includes the yard line from the street meter to the foundation.
Protective Clause: States scope begins at the building point of entry; exterior main yard line replacement is excluded unless explicitly added.
Governing Building Codes & Standards
Frequently Asked Questions
Why is PEX-A expansion preferred over PEX-B crimp fittings?▾
PEX-A uses shape-memory expansion rings that cannot be under-crimped or over-crimped. The fittings have a wider internal diameter matching the pipe, preventing the 20% water pressure drop common with PEX-B insert crimps.
Can the family stay in the home during a repipe project?▾
Yes. Water is typically turned off during working hours (8 AM to 5 PM) and restored with temporary connections each evening so homeowners have running water overnight.
Related Plumbing Proposal Scopes
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