# What to include in a balcony waterproofing renewal quote Plan a UK balcony waterproofing renewal estimate with measured scope, product choices and exclusions. Review 7 fictional GBP lines and the matching £5,749.94 PDF example. Canonical: https://quicklyestimates.com/en-gb/guides/how-to-estimate-balcony-waterproofing/ Author: Estimates editorial team Published: 2026-09-25 Updated: 2026-09-25 Estimate balcony waterproofing renewal by measuring the defined one accessible balcony deck, separating product allowances from labour and setting out the work sequence and exclusions. This fictional Nottingham example uses 7 itemised lines totalling £5,749.94; its exact quantities and rates appear in the paired app PDF. THE ESTIMATING ANSWER Estimate balcony waterproofing renewal by measuring the defined one accessible balcony deck, separating product allowances from labour and setting out the work sequence and exclusions. This fictional Nottingham example uses 7 itemised lines totalling £5,749.94; its exact quantities and rates appear in the paired app PDF. The worked job is one accessible balcony deck in Nottingham . The written scope is: Renew the waterproof surface system on one small accessible balcony, including edge and outlet details on a sound substrate. Its matching itemised example (https://quicklyestimates.com/en-gb/samples/balcony-waterproofing-estimate/) shows how that description becomes quantities, allowances and a PDF. These figures are fictional inputs for learning the method, so check the real site, specification and supplier or subcontractor costs before quoting. 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. Measure for this job: Measure deck area, threshold height, upstands, edge length and drainage outlet. Record the measured basis next to the relevant cost lines, since a room count, fitted length and purchased product quantity may each use a different unit. 2. Build a product and labour 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 labour inputs for a customer job; the displayed amounts are fictional document inputs. Choose before pricing: Specify the membrane or coating system and edge profiles separately. Keep a named allowance when the selection is open, and replace it once the actual product and delivery terms are known. 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. Plan the handoffs: Remove existing finish, inspect substrate and confirm drainage fall before applying the new system. State which stage needs access or inspection before the next can begin, especially if a concealed condition might stop the work. 4. Set a change boundary Hidden substrate rot or inadequate fall requires a revised build-up. The example excludes structural deck replacement, new balustrade or interior damage repair. Record the discovery, agree the revised work and update the estimate before adding it to the job. Change trigger: Hidden substrate rot or inadequate fall requires a revised build-up. If this happens, write down the revised quantity and responsibility before adding an item to the customer estimate. Worked project calculation The paired PDF has 7 cost lines. For example, Existing finish removal is 11.1 sq m × £60.30 = £669.33; Substrate preparation is 11.1 sq m × £51.70 = £573.87. Each amount is the stated quantity multiplied by its unit rate. Recheck whether a line describes installed work, a material purchase allowance or a distinct visit before changing its quantity. Balcony waterproofing renewal example — GBP, fictional inputs Work item | Quantity | Unit rate | Amount | Access and weather protection | 1 lump sum | £264.00 | £264.00 | Existing finish removal | 11.1 sq m | £60.30 | £669.33 | Substrate preparation | 11.1 sq m | £51.70 | £573.87 | Waterproof system allowance | 12.1 sq m | £129.20 | £1,563.32 | Application labour | 11.1 sq m | £172.20 | £1,911.42 | Edge and outlet detailing | 1 lump sum | £600.00 | £600.00 | Final inspection and clean-up | 1 lump sum | £168.00 | £168.00 | Illustrative total | £5,749.94 | Adding the 7 exact line amounts gives £5,749.94 . The PDF uses a 0% tax input and no markup solely to display this arithmetic. Decide the appropriate tax, overhead and profit treatment for an actual job; the fictional rates are not local averages or price recommendations. Scope and price 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 balustrade or interior damage repair. The role in this brief is roofing contractor. Confirm who supplies the selected products, makes the site safe, removes waste and signs off the work. Where opening up reveals a different condition, document it and issue a revised scope and price rather than silently extending the base estimate. Also check access, drying or curing time, and the client handoff described in the work sequence. Before you send - 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. Compare the written scope with every line in the balcony waterproofing renewal PDF example (https://quicklyestimates.com/en-gb/samples/balcony-waterproofing-estimate/). The preview below is the first page of the actual app export; open the PDF to inspect its full scope, notes and amounts. (https://quicklyestimates.com/assets/guides/balcony-waterproofing/en-GB/estimate.pdf) Questions about this job 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 balustrade or interior damage repair. FROM SITE NOTES TO AN ITEMISED PDF Build your own balcony waterproofing renewal estimate Enter the project boundary and your measured lines in Estimates on iPhone or Android. Edit the fictional quantities and rates, add the actual business and client details, then inspect the PDF before sharing it. Create an estimate ↗ (https://quicklyestimates.com/en-gb/download/)Open the worked example → (https://quicklyestimates.com/en-gb/samples/balcony-waterproofing-estimate/) Get the app: https://quicklyestimates.com/en-gb/download/ App Store (iPhone): https://apps.apple.com/app/id6740389403 Google Play (Android): https://play.google.com/store/apps/details?id=com.uzel.contractorplus