THE ESTIMATING ANSWER
For one accessible balcony deck, start with a defined scope and measurement basis. Measure deck area, threshold height, upstands, edge length and drainage outlet. Specify the membrane or coating system and edge profiles separately. Price the listed tasks separately and state the condition that would require a revision: Hidden substrate rot or inadequate fall requires a revised build-up.
This guide uses one accessible balcony deck as a worked, fictional job. Its matching itemized estimate and PDF let you trace the advice to actual document lines. The role considered here is roofing contractor. Confirm the site conditions, product selections and your own costs before preparing a client quote.
1. Define the measured job
Renew the waterproof surface system on one small accessible balcony, including edge and outlet details on a sound substrate. Measure deck area, threshold height, upstands, edge length and drainage outlet. Record the measurements and existing condition in the estimate before turning quantities into line items. The scope should make clear why this is a separate project from a broader renovation or maintenance quote.
Measurement basis: Measure deck area, threshold height, upstands, edge length and drainage outlet.
2. Build a product and labor schedule
Specify the membrane or coating system and edge profiles separately. This example has 7 distinct lines, including access and weather protection, existing finish removal, substrate preparation. Use actual supplier prices and labor inputs for a customer job; the displayed amounts are fictional document inputs.
Selections to confirm: Specify the membrane or coating system and edge profiles separately.
3. Sequence the work and handoffs
Remove existing finish, inspect substrate and confirm drainage fall before applying the new system. Show which task depends on access, a selected product or another trade. If that dependency is still open, label the price preliminary and identify the information needed before a firm quote.
Work sequence: Remove existing finish, inspect substrate and confirm drainage fall before applying the new system.
4. Set a change boundary
Hidden substrate rot or inadequate fall requires a revised build-up. The example excludes structural deck replacement, new railing or interior damage repair. Record the discovery, agree the revised work and update the estimate before adding it to the job.
If the job changes: Hidden substrate rot or inadequate fall requires a revised build-up.
Worked project calculation
The example line for existing finish removal is 120 sq. ft. × $7.00 = $840.00. This line is one part of the complete 7-item estimate and uses a fictional unit rate.
The paired estimate has 7 separate lines. For this fictional job, multiply each quantity by its unit price and add the line amounts to get $7,200.00. The sample PDF uses these exact values, with tax and markup left at zero so the arithmetic is visible. This total is an illustration, not a regional price or an offer to perform the work.
| Cost line | Quantity | Unit price | Line amount |
|---|---|---|---|
| Access and weather protection | 1 job | $330.00 | $330.00 |
| Existing finish removal | 120 sq. ft. | $7.00 | $840.00 |
| Substrate preparation | 120 sq. ft. | $6.00 | $720.00 |
| Waterproof system allowance | 130 sq. ft. | $15.00 | $1,950.00 |
| Application labor | 120 sq. ft. | $20.00 | $2,400.00 |
| Edge and outlet detailing | 1 job | $750.00 | $750.00 |
| Final inspection and cleanup | 1 job | $210.00 | $210.00 |
| Illustrative subtotal | $7,200.00 | ||
Scope and pricing boundaries
Renew the waterproof surface system on one small accessible balcony, including edge and outlet details on a sound substrate.
Outside this example: No structural deck replacement, new railing or interior damage repair.
Separately identify supplier allowances, labor, subcontracted work and site-specific risk where they apply. Before giving a selling price, decide how your own overhead, profit and any applicable tax will be handled. Do not copy the fictional rates into a real quote without checking your own measurements and supplier or subcontractor figures.
Before you send the estimate
- Measure deck area, threshold height, upstands, edge length and drainage outlet.
- Specify the membrane or coating system and edge profiles separately.
- Remove existing finish, inspect substrate and confirm drainage fall before applying the new system.
- Hidden substrate rot or inadequate fall requires a revised build-up.
Read the complete balcony waterproofing renewal PDF example to see how the scope, individual prices and exclusions appear in a client-facing document. If a condition is still unknown, write that boundary into your estimate and revise the affected line once it is resolved.
Questions about this estimate
Which quantity controls this balcony waterproofing renewal estimate?
Measure deck area, threshold height, upstands, edge length and drainage outlet.
When should this balcony waterproofing renewal quote be revised?
Hidden substrate rot or inadequate fall requires a revised build-up. No structural deck replacement, new railing or interior damage repair.
TURN THIS EXAMPLE INTO YOUR OWN ESTIMATE
Build a balcony waterproofing renewal estimate for your project
Use Estimates on iPhone or Android to draft a scope with AI assistance or enter each line yourself. Review quantities, rates, exclusions, and client details before exporting a PDF. The example is free to inspect; some app features may require an in-app purchase.
