Waterproofing Invoice Template
Download a waterproofing invoice template to bill membranes, sealants, drainage, labor, equipment, testing, retainage, and approved change orders.
Create Clear Invoices for Waterproofing Work
A waterproofing invoice gives specialty contractors a consistent way to bill completed membrane, coating, detailing, sealant, drainage, protection, testing, labor, equipment, and approved change-order work. Clear billing helps customers understand what has been installed, how progress was measured, and how the current amount due was calculated.
This Waterproofing Invoice Template is designed for waterproofing subcontractors, building-envelope contractors, restoration contractors, project managers, office administrators, billing staff, and construction business owners working on below-grade waterproofing, plaza decks, podiums, balconies, terraces, planters, traffic coatings, and related moisture-protection work.
What Is a Waterproofing Invoice?
A waterproofing invoice is a customer-facing billing document used to request payment for completed or otherwise billable waterproofing work. Depending on the contract, billing may be based on a schedule of values, percent complete, square footage, linear footage, unit prices, approved stored materials, time-and-material work, change orders, or a combination of these methods.
Typical billable work may include substrate preparation, primer, sheet membrane, self-adhered membrane, fluid-applied waterproofing, traffic coatings, crack treatment, joints, penetrations, drains, terminations, sealants, protection board, drainage composite, insulation where included, lifts, scaffolding, testing support, repairs, and closeout.
When to Use This Template
- Billing below-grade foundation or retaining-wall waterproofing
- Billing sheet-applied, self-adhered, or fluid-applied membrane installation
- Billing plaza decks, podiums, balconies, terraces, or planter waterproofing
- Billing traffic-coating or pedestrian-coating work when included
- Billing protection board, drainage composite, insulation, and accessories
- Billing penetrations, drains, joints, transitions, terminations, and other detailed work
- Billing approved lifts, scaffolding, sprayers, pumps, or other equipment
- Billing approved stored membranes, coatings, drainage materials, or accessories
- Billing mockups, flood testing, leak-detection support, repairs, or retesting when compensable
- Submitting progress, unit-price, time-and-material, change-order, final, or retainage-release invoices
Who Should Use This Template?
This template is suitable for commercial waterproofing subcontractors, building-envelope contractors, restoration contractors, specialty coating contractors, project managers, office administrators, billing staff, and business owners.
It can be adapted for commercial buildings, multifamily projects, parking structures, hospitals, schools, hotels, industrial facilities, podiums, foundation walls, plaza decks, terraces, balconies, planters, pits, and other waterproofing scopes.
What a Waterproofing Invoice Should Include
| Invoice Section | Purpose |
|---|---|
| Contractor and Customer Details | Identifies the waterproofing contractor, customer, owner, general contractor, billing contact, project, and remittance information. |
| Invoice Information | Records invoice number, billing period, invoice date, due date, payment terms, subcontract number, purchase order, and schedule-of-values reference. |
| Waterproofing-System Progress | Tracks below-grade, horizontal, vertical, deck, planter, traffic-coating, and specialty systems by area, elevation, level, or schedule item. |
| Membranes and Coatings | Tracks sheet membrane, self-adhered membrane, fluid-applied systems, primers, coatings, reinforcement, and completed square footage. |
| Details and Penetrations | Tracks corners, transitions, terminations, penetrations, drains, joints, flashings, and other separately measurable detail work. |
| Protection and Drainage | Tracks protection board, drainage composite, drainage mat, insulation where included, termination bars, and associated accessories. |
| Sealants | Tracks joint sealants, transition sealants, backer rod, primers, and related linear-foot quantities where separately billable. |
| Labor and Time-and-Material Work | Tracks applicators, laborers, foremen, equipment operators, regular time, overtime, and approved extra work where applicable. |
| Equipment and Access | Tracks lifts, scaffolding, sprayers, mixers, generators, pressure washers, pumps, temporary protection, and other approved equipment. |
| Stored Materials | Tracks approved membranes, coatings, drainage materials, protection products, sealants, and accessories stored onsite or offsite when the contract allows stored-material billing. |
| Testing and Repairs | Tracks approved mockups, flood testing, leak-detection support, corrective work, repair materials, and retesting where billable. |
| Contract Billing | Summarizes original subcontract value, approved changes, previous billing, current billing, stored materials, retainage, credits, payments, and remaining balance. |
How to Use the Template
- Enter the contractor, customer, project, billing contact, subcontract, purchase-order, and remittance information.
- Assign a unique invoice number and confirm the billing period, invoice date, due date, and payment terms.
- List schedule-of-values items, waterproofing systems, areas, unit-price work, stored materials, or approved changes separately.
- Record the agreed billing quantity or percent complete for each line item.
- For area-based billing, identify the applicable building, elevation, level, system, or work area when required for supporting documentation.
- For detail work, record penetrations, drains, joints, transitions, terminations, sealant footage, or other approved quantities using the contract measurement basis.
- For stored materials, document the material, quantity, value, storage location, vendor invoice, purchase order, and required supporting references.
- List approved change orders separately from original subcontract work.
- Apply previous billing, retainage, taxes, credits, backcharges, and payments according to project requirements.
- Review installed quantities, schedule values, stored-material amounts, rates, backup documentation, and calculations before issuing the invoice.
A waterproofing subcontractor submits a monthly progress invoice for a multifamily project. The billing includes 9,600 square feet of completed below-grade membrane, 4,100 square feet of drainage composite and protection board, 38 completed penetration details, 640 linear feet of terminations, and approved stored membrane for an upcoming podium release. An approved change covers added crack treatment discovered after substrate preparation. The invoice deducts previous billing, applies contract retainage, and references the current schedule of values, field quantity records, material invoices, delivery tickets, and approved change authorization.
Best Practices for Waterproofing Invoices
- Match invoice descriptions to the subcontract, schedule of values, proposal, and approved changes.
- Separate major waterproofing systems when they have different schedule values or billing methods.
- Use the project's agreed measurement basis for square footage, linear footage, each, percent complete, stored materials, or unit-price work.
- Identify building, elevation, level, or work area when it helps the customer verify installed quantities.
- Reconcile membrane area, detail quantities, drainage materials, and protection work with current field records before billing.
- Document stored materials separately from installed work and follow the project's supporting-document requirements.
- Keep approved changes separate from base-subcontract billing.
- Reference signed tickets or other approved records for time-and-material work.
- Apply retainage, taxes, prior payments, credits, and backcharges consistently.
- Preserve revised, disputed, credited, and voided invoice history.
Common Waterproofing Invoice Mistakes
- Using vague descriptions such as “waterproofing progress” without a measurable billing basis
- Billing membrane quantities that do not reconcile with current field records
- Combining below-grade, deck, planter, coating, and detail work when they use different schedule values
- Billing stored materials without the documentation required by the subcontract
- Billing substrate repairs, added penetrations, or changed systems before change authorization
- Using unit rates that do not match the approved agreement
- Billing repairs or retesting without confirming whether those costs are compensable
- Applying the wrong retainage percentage or tax treatment
- Failing to deduct previous billing, credits, payments, or backcharges
- Issuing a final invoice before punch work, testing, approved changes, closeout, and retainage are reconciled
Frequently Asked Questions
What should be included on a waterproofing invoice?
Include contractor and customer information, project details, invoice dates, payment terms, waterproofing-system descriptions, quantities or percent complete, schedule values or rates, approved changes, stored materials where applicable, taxes, retainage, previous billing, payments, and amount due.
How should waterproofing work be billed?
Use the payment method established by the subcontract. Common approaches include schedule-of-values progress, square footage, linear footage, each, unit prices, approved stored materials, time-and-material work, and change-order billing.
Should membrane square footage appear on the invoice?
It can be useful when square footage is the billing basis or supports a percent-complete calculation. Identify whether the quantity represents current-period installation, cumulative installation, stored material, or another agreed measurement.
How should penetrations and drains be billed?
If the contract uses unit pricing, record the quantity completed and the approved unit rate. If those details are included within a lump-sum schedule item, use the completed quantities as supporting progress documentation rather than automatically billing them separately.
How should stored waterproofing materials be billed?
When the contract allows stored-material billing, list the material, quantity, value, storage location, vendor documentation, previous stored amount, amount transferred to installed work, and current stored balance as required by the customer.
How should testing and repair work appear on an invoice?
Bill mockups, testing support, repairs, or retesting separately only when the agreement allows it. Reference the applicable test, work ticket, change authorization, or other supporting document.
How should waterproofing change orders be invoiced?
List approved changes separately and reference the applicable change-order number, description, approved value, current billing, previous billing, and remaining value. Typical changes may involve additional preparation, penetrations, revised systems, access, remobilization, or added protection.
When should a final waterproofing invoice be issued?
Issue the final invoice after billable installation, approved changes, repairs, testing, punch-list work, final quantity reconciliation, required closeout documentation, credits, and retainage conditions have been addressed according to the subcontract.
Keep Waterproofing Billing Clear and Traceable
A structured waterproofing invoice helps contractors connect membrane installation, detailing, protection, drainage, sealants, equipment, stored materials, testing, approved changes, retainage, and payments with the billing requirements established for the project.