What do waterproofing estimating services include?
Waterproofing estimating services from KNR include a quantity takeoff of membranes, barriers, flashing, and accessories by CSI Division 07, with unit costs adjusted using BLS wage and PPI data. You get an Excel workbook, PDF summary, and marked-up drawings so every number is traceable.
Our Professional Waterproofing Estimating Services
A waterproofing estimate lives or dies on the measurement rule. On a below grade waterproofing takeoff we measure the wall face from the top of footing to finished grade, then add the footing stem and the slab underslab area separately, because sheet membrane, fluid-applied membrane and bentonite are priced on different surfaces. Every line carries its unit, its waste allowance and the spec section it comes from, so you can trace a quantity back to a drawing sheet.
We produce professional thermal and moisture protection estimating for Division 07 scopes, and our waterproofing estimating services follow the same convention: a takeoff tab, a pricing tab and a marked-up plan set. The same discipline carries into stucco and eifs estimates support, where air and vapor barrier continuity across the wall assembly is measured on the same sheet. Send the drawings through send your plans and the fee is quoted per project after review.
Waterproofing material takeoffs
We measure sheet membrane, fluid-applied membrane, bentonite, drainage board and protection board in square feet of installed area, with linear feet carried for termination bar, base flashing and cove fillet. Lap splice is deducted from net coverage and added back as material, so a 3-foot roll lap does not get counted as free area. You receive a line-item takeoff keyed to the drawing sheet and detail number.
Waterproofing labor cost estimates
Labor is priced by the unit the crew actually installs against: square feet of membrane for field area, linear feet for flashing and terminations, and each for penetration boots and drains. Production rates are adjusted for crawl space and below-grade work where access limits output, then multiplied by published wage data for the trade. The workbook shows hours and rate separately so you can substitute your own crew cost.
Bid-ready waterproofing cost estimates
The final tab rolls material, labor, equipment and waste into a cost estimate formatted for bid review, with the assumptions listed on a cover sheet. Substrate condition, protection board requirement and backfill sequence are stated as inclusions or exclusions rather than buried in a lump sum. You get an Excel workbook, a PDF summary and marked-up drawing pages showing exactly where each quantity was taken off, which is what separates waterproofing estimating services from a square-foot guess.
What Is Included in Our Waterproofing Estimates?
Each estimate is built from the specification section and the details, not from a square-foot rule of thumb. Our waterproofing estimating services keep the air and vapor barrier takeoff on its own tab because barrier continuity, sealant and transition membranes are priced differently from below-grade waterproofing. Barrier scope is coordinated with the insulation estimating services so the vapor retarder and the cavity insulation are not counted twice.
Footings, slabs, walls and elevated decks
We take off the surfaces this trade actually covers: footing stem and heel, foundation wall face, underslab vapor retarder, slab edge, retaining wall, crawl space floor, plaza deck and balcony, plus traffic coating on elevated walking surfaces. Dampproofing is measured separately from waterproofing because the products and the spec section differ. Each surface is listed with its area, its membrane type and the detail reference.
Square feet of membrane, linear feet of flashing and each penetration
Quantities are reported in the unit the installer is paid on. Membrane and drainage board are square feet; termination bar, base flashing, counterflashing and cove are linear feet; pipe boots, drains, scuppers and penetrations are counted each. Waste is applied at typical ranges by product type and shown as its own column so you can see what was added and why.
Materials, labor, equipment and cost breakdowns
The pricing tab separates the cost so a reviewer can challenge any single line:
- Materials: membrane, primer, bentonite, drainage board, protection board, sealant and flashing, priced with published producer price movement applied.
- Labor: hours by operation, multiplied by published wage data for the trade.
- Equipment: surface preparation, spray rigs and lifts where the scope requires them.
- Waste and contingency: stated as a percentage with the basis noted.
- Subtotal and unit cost: cost per square foot of waterproofed area for comparison against your budget.
Who Needs Our Waterproofing Estimating Services?
A waterproofing quantity takeoff is easy to check and hard to argue with when every line shows its measurement rule. That matters most to the people who carry the risk on a fixed-price bid, which is why our waterproofing estimating services start from the drawing scale and the spec section rather than a square-foot allowance.
Waterproofing and damp-proofing subcontractors
Specialty waterproofing crews bid against short plan windows and need quantities they can trust before adding markup. We deliver the takeoff with termination bar, flashing and penetration counts already separated, so your bid estimate reflects the labor those details consume. The same workbook supports change-order pricing when the architect revises a detail mid-project, and the arithmetic stays visible line by line.
General contractors and home builders
General contractors use the estimate to level subcontractor bids and to check that each proposal covers the same scope. A vapor barrier listed on one bid and excluded on another shows up immediately when both are compared against the same line-item takeoff. Home builders use it for foundation waterproofing budgets on repeat plans, where a single missed wall area multiplies across every lot.
Developers, architects and suppliers
Developers need a cost per square foot of below-grade area before committing to a pro forma. Architects use the marked-up drawings to confirm that the specified assembly is priced as drawn. Suppliers use the material quantities to size orders and plan deliveries against the construction sequence. Our waterproofing estimating services and quantity takeoff services cover the rest of the envelope when the scope extends past Division 07.
Types of Waterproofing Projects We Estimate
Scope changes with the building type, and the estimate has to follow. A foundation waterproofing estimate for a single-family house is a different document from a plaza deck assembly on a mid-rise. Our waterproofing estimating services cover both, and the same rule applies to each: every quantity carries its unit, its measurement rule and its source line.
Residential projects
Residential work turns on foundation walls, crawl space encapsulation, underslab vapor retarder and deck waterproofing over living space. Quantities are small but detail-dense, so the takeoff is organized by house type and repeated across the plan set. We keep the air barrier and the vapor retarder on separate lines because inspectors check them against different code sections.
Commercial buildings
Commercial scopes add plaza deck, planters, elevator pits, below-grade parking walls and blindside waterproofing against shoring. Lap splice direction, protection board and backfill sequencing drive both quantity and labor, so the takeoff notes the installation sequence assumed. Our construction cost estimating services cover the structural and finish packages around the waterproofing scope, and the same sheet logic carries into our fireproofing estimating services where Division 07 assemblies overlap.
Industrial and infrastructure projects
Industrial and infrastructure work brings retaining walls, tunnels, tanks, culverts and traffic coating on elevated structures, often under a performance specification rather than a prescriptive one. We measure to the detail shown and flag where the spec leaves the assembly open, so the bid carries a stated assumption. Confirm the adopted code edition and local amendments with the building department before pricing.
Our Waterproofing Estimating Process
Every waterproofing estimating services assignment follows the same three steps, and each step leaves a record you can audit. We work from the drawings and the Division 07 specification sections together, because the spec names the membrane type, the substrate preparation and the protection course that the drawings often leave to a note. The same discipline carries into our roofing estimates, where the membrane and flashing scope has to be pinned down the same way.
A dampproofing and waterproofing bid estimate lives or dies on the scope boundary. Before any measuring starts, we confirm what the documents exclude: drainage board, footing drains, and whether the below grade membrane turns up onto the slab edge or stops at the wall base.
Submit drawings and specifications
Send the architectural and structural sheets, the Division 07 specification sections, and any addenda or alternates issued to date. We log the drawing date, revision number and sheet count so the estimate is tied to a specific issue. If the spec calls out a manufacturer system, we note the product family and the required accessories rather than assuming a generic membrane.
Plan review and digital takeoff
We set the drawing scale and measure each waterproofed area to the MasterFormat line item it belongs to: horizontal membrane under slab, vertical membrane on foundation walls, and the turn-up at the slab edge. Every penetration detail, pipe boot, termination bar and cove and fillet is counted separately as an each, not absorbed into the area. Lap splices are added to sheet membrane quantities as a measured allowance, and we flag any detail drawn without a dimension for your confirmation.
Cost calculation, quality checks and delivery
Material quantities are priced from the unit cost base and adjusted with published U.S. wage and price data. A second estimator re-measures a sample of walls, footings and slab areas against the marked-up sheets and checks that every takeoff line appears in the cost workbook. You receive the Excel workbook, the PDF summary and the marked-up drawings; the fee is quoted per project after we review the plans, and you can send your plans to start that review.
Sample Waterproofing Estimate and Deliverables
The example below is illustrative only. It assumes a 10,000 square foot below-grade foundation wall measured on the vertical face, a 4,000 square foot slab area under conditioned space, and a blindside waterproofing takeoff at 1,800 square feet of lagging wall where the property line prevents excavation from the outside.
Wall membrane: 10,000 sq ft plus a 10 percent lap and waste allowance equals 11,000 sq ft. Protection board: 10,000 sq ft plus 5 percent equals 10,500 sq ft. Under-slab vapor retarder: 4,000 sq ft plus 12 percent for laps equals 4,480 sq ft. Blindside membrane: 1,800 sq ft plus 8 percent equals 1,944 sq ft. Cove and fillet: 620 linear feet of wall base. Penetrations: 34 each. Termination bar: 620 linear feet. A quantity takeoff built this way keeps the waste rule visible on every line, so a reviewer can change one assumption without reworking the sheet.
| Item | Quantity | Unit | Unit cost range | Extended range |
|---|---|---|---|---|
| Sheet waterproofing membrane, foundation wall | 11,000 | sq ft | $2.10 – $3.40 | $23,100 – $37,400 |
| Protection board, foundation wall | 10,500 | sq ft | $0.85 – $1.45 | $8,925 – $15,225 |
| Vapor retarder under slab | 4,480 | sq ft | $0.55 – $1.10 | $2,464 – $4,928 |
| Blindside waterproofing membrane | 1,944 | sq ft | $4.20 – $7.50 | $8,165 – $14,580 |
| Cove and fillet | 620 | lin ft | $3.50 – $6.00 | $2,170 – $3,720 |
| Penetration detail, sealed | 34 | each | $45 – $95 | $1,530 – $3,230 |
| Termination bar with fasteners | 620 | lin ft | $4.00 – $7.25 | $2,480 – $4,495 |
| Total | — | — | — | $48,834 – $83,578 |
Excel quantity takeoff sheet
Each line carries the drawing reference, the measured quantity, the unit of measure, the waste or lap percentage and the resulting order quantity. Area lines are in square feet, linear items such as termination bar and cove and fillet are in linear feet, and discrete items such as penetration details are counted each. Formulas stay live so you can test your own waste factors against ours.
Marked-up drawings
We color-code each membrane type on the plan and elevation sheets and label every measured area with its dimension string. Blindside sections are marked separately from positive-side wall membrane, since the two are priced and sequenced differently. Penetration callouts are numbered to match the takeoff lines.
Itemized cost estimate
The cost workbook prices each line with material, labor and equipment split, then adds the accessory items the specification requires. The ranges in the table are illustrative and are not a quote for your project; the actual figures come from the pricing method described in the next section.
Software and Pricing Data We Use
A fluid applied membrane takeoff and a sheet membrane takeoff need different measurement rules, and the tooling has to keep those rules separate. On-screen takeoff from the PDF set gives us the measured area at the drawing scale; the estimating spreadsheet applies the waste, lap and coverage rules to each line. Cost databases supply the base unit costs, and every line keeps its unit of measure attached so square foot and linear foot quantities never get mixed.
Takeoff and estimating software
We measure on the digital drawing set rather than scaling paper, and we record the scale and sheet number for each measurement. Membrane coverage rates, lap widths and accessory counts are entered as explicit rules in the workbook, not typed as finished quantities. That means a change to the lap allowance or the slab edge detail recalculates the affected lines instead of hiding the correction.
Regional material and labor pricing method
Material pricing starts from national average unit costs and is adjusted with the published Producer Price Index series for the products in this scope; the chart below shows how those series have moved, rebased to 100. Labor is priced from national wage data and adjusted for the local market, prevailing wage requirements and project conditions such as occupied space or restricted access. The wage table below shows the trades whose rates feed the installation labor on these lines. Each adjustment is listed as a separate input in the workbook so you can see exactly what moved the number.
Material price movement, Oct 2023 to Sep 2026
| Occupation | 25th percentile | Median | 75th percentile |
|---|---|---|---|
| Roofers | $22.24 | $26.65 | $31.44 |
| Cement masons and concrete finishers | $22.60 | $27.41 | $32.15 |
| Construction laborers | $18.57 | $22.66 | $28.72 |
Base wages before payroll taxes, insurance and benefits. Source: BLS Occupational Employment and Wage Statistics, national, all industries.
Why Contractors Choose Our Estimating Services
The reasons are method-based: you can open the workbook and follow any number back to a drawing, a rule and a price source. A sheet waterproofing material takeoff is only as good as its lap and waste assumptions, and we show both on the face of the sheet rather than burying them in a total. The same discipline carries across the envelope trades, which is why teams that send us below-grade work often pair it with professional siding estimating services on the above-grade elevations.
Trade-specific expertise
Waterproofing quantities fail in predictable places: the membrane turn-up at the footing, the fluid applied membrane coverage over a prepared substrate, and the protection board that is often value-engineered out of a bid. We measure each of those as its own line and state the coverage rate used, so a square foot of membrane means the same thing on your sheet as it does in the field.
Quality control and clear assumptions
Every estimate carries an assumptions page listing the drawing issue, the spec sections used, the waste and lap factors, and the items excluded from our scope. A second estimator checks a sample of measured areas against the marked-up drawings before the workbook is released. Where a detail is ambiguous, we list it as an open item rather than guessing silently.
Turnaround, communication and revisions
The delivery date is agreed when we accept the assignment, based on sheet count and the number of membrane systems involved. Revisions are handled against a reissued drawing set, and we mark which lines changed and why so your bid file stays current. Questions during review go to the estimator who built the sheet, and you can request a quote or review our thermal and moisture protection estimating scope for the adjoining divisions.
Waterproofing Estimating Services Pricing
The fee for our waterproofing estimating services is quoted per project after we review the drawings and specifications. It is not a flat rate per sheet or a percentage of construction value, because a 12-sheet foundation package with three alternates and two addenda carries a different workload than a 60-sheet envelope set. Send the plans and we return a fixed fee tied to the scope we can see.
Every line in the delivered workbook carries the same chain: quantity, unit of measure, measurement rule, unit cost, extension. A below-grade wall membrane priced from a bentonite panel count and a fluid-applied membrane priced from a square-foot field area are both traceable back to the drawing sheet and detail they came from, so your reviewer can check any number without calling us. The output is a waterproofing cost estimate Excel workbook plus a PDF summary and marked-up drawing pages.
How quotes are calculated
We price the review, not the output. The quote reflects the sheet count across architectural, structural and civil sets, the number of waterproofing assemblies to be measured, the number of alternates and unit-price schedules, and the addenda that must be reconciled. A foundation wall with an interior drainage board, exterior sheet membrane and footing detail is measured in square feet of wall face plus linear foot of termination bar, cove and flashing, each with its own rule.
When the scope is clear, the fee is fixed. When the drawings are schematic or the spec section is missing, we quote the takeoff we can defend and list the assumptions in the workbook. The calculator below does not price our fee; it builds a square-foot budget from the base hard cost, soft-cost percentage, contingency and escalation you enter, and returns hard cost, soft costs, contingency, escalation, budget total and all-in cost per square foot.
What affects price and delivery time
Four things move the quote: drawing volume, the number of CSI Division 07 assemblies in scope, alternates and addenda, and how close the bid date sits to the review. A package with blindside waterproofing, plaza deck traffic coating and below-slab vapor retarder in one set takes longer to measure than a single foundation scope of the same sheet count, because each assembly has its own detail library.
Delivery time is confirmed with the quote, not before. The date shortens when the set is complete, the spec sections are issued and the bid date is known; it lengthens when addenda arrive mid-review or when structural and architectural sheets disagree on wall thickness. We do not publish hours or days in advance. Plan review sets the schedule, and the estimator who measures the job is the one who confirms it.
Square-foot budget calculator
- Hard cost
- $444,000
- Soft costs
- $53,280
- Contingency
- $49,728
- Escalation
- $21,880
- Budget total
- $568,888
- All-in per sq ft
- $237
Enter your own base rate from a recent bid, cost book or estimator. The default values are placeholders for the math, not market prices.
Waterproofing Estimating Services Across the US
We serve all U.S. states from one team, and the same measurement rules apply whether the project is in a cold climate or a coastal one. What changes is the input data. Labor rates are adjusted with published U.S. Bureau of Labor Statistics wage data by trade and region, and material pricing is adjusted with Producer Price Index movement for the product families in the assembly, so a sheet waterproofing material takeoff reflects current market direction rather than a stale unit cost.
Prevailing wage on public work changes the labor component of a foundation waterproofing estimate, and the wage table below shows the national medians we start from. Climate and code drive scope: a below-slab vapor retarder takeoff in a heated slab differs from a vented crawl space, and a retaining wall on a sloped site may need drainage board and a footing drain the drawings never label. Local code editions are confirmed with the building department.
Material delivery distance affects the freight component of heavy goods such as bentonite panels and protection board. Waste factor is applied per assembly, typically 5 to 10 percent on sheet goods and roll membranes and less on rigid board, and it is stated as a rule in the workbook rather than buried in the unit cost. Our waterproofing estimating services follow the same method in every state, and the assumptions are printed on the estimate.
| Trade | National median hourly wage |
|---|---|
| Roofers | $26.65 |
| Carpenters | $29.12 |
| Sheet metal workers | $29.71 |
| Construction laborers | $22.66 |
Frequently Asked Questions
How much does a waterproofing estimate cost?
The fee is quoted per project after we review the plans, so it depends on sheet count, the number of membrane systems, and how many detail conditions the drawings show. A single below-grade wall assembly prices differently from a plaza deck with traffic coating, flashing, and drainage board. Send the drawings and specifications and we will confirm the scope and fee in writing before starting.
How long does a waterproofing takeoff take?
The delivery date is set once we have seen the drawing set and confirmed scope, and it is stated on the quote. Volume of detail sheets, the number of plan sheets at small scale, and whether specifications are issued for bid all move that date. We do not publish a standard turnaround because a two-sheet foundation plan and a full plaza deck package are not comparable.
Do you estimate labor and material costs?
Yes. Each line carries a quantity, a unit of measure, a material cost, and a labor cost built from published wage data by trade, then reviewed by an estimator. Material pricing reflects published producer price movement for the relevant product group. The workbook shows the arithmetic on every row so you can trace a total back to its quantity and rate.
What drawings do you need?
Send the architectural and structural sheets that show foundation walls, slab edges, footings, and deck assemblies, plus the Division 07 specification sections for waterproofing, dampproofing, and air and vapor barriers. Reflected ceiling plans and roof plans help where the scope touches them. A drawing index and any addenda keep the takeoff tied to the correct issue.
Can you use my estimate template?
Send the template with the plans and we will confirm whether the estimate can be delivered in it. Column structure, unit conventions, and any built-in formulas need to be checked against our takeoff before we commit. If the template cannot carry the detail, we deliver our workbook and a PDF summary you can map into your format.
Do you sign NDAs?
Clients can request an NDA before sending drawings, and the terms are agreed before plan review begins. Send the document you want signed with your initial inquiry so it can be reviewed alongside the scope. We do not apply a standard agreement to every project; the arrangement is set per client.
What unit of measure do you use for sheet membrane and fluid applied membrane?
Sheet waterproofing is taken off in square feet of membrane area with lap splices added as a separate linear quantity, since laps are a function of roll width rather than wall area. Fluid applied membrane is measured in square feet of coated surface, with mil thickness and coat count taken from the specification. Termination bars, penetration details, and cove and fillet are counted or measured in linear feet.
How do you handle blindside waterproofing takeoff where the wall is cast against soil?
Blindside work is taken off from the shoring or lagging profile rather than the finished wall face, because the membrane follows the excavation line. We measure the soil-retention surface in square feet, then add separate quantities for protection board, drainage composite, and the terminations at the footing and at the top of the wall. Where the drawings show a slab edge or a step footing, those transitions are counted individually.
Can you estimate air and vapor barrier takeoff from performance specifications?
Yes, but performance specifications usually leave the product open, so we take off the continuous barrier area, the accessory quantities, and the air leakage intent stated in the section, then note the product assumption on the line. Where the spec names a membrane and its perm rating, the takeoff follows that product. Confirm the code edition and any whole-building air barrier requirement with the building department.
Do you include waste factors in a waterproofing quantity takeoff?
Yes, and the waste factor is shown as its own line so you can change it. Typical waste for sheet membrane runs higher than for fluid applied because of roll-end loss and detail cuts; drainage board and protection board carry their own allowance. Your bid can override any factor without recalculating the quantities.
What estimate class does a waterproofing cost estimate Excel workbook correspond to?
Most takeoffs we produce sit at AACE Class 3 or Class 2 depending on how complete the design is, and the workbook states which applies. A Class 3 estimate from schematic drawings carries more allowance for undefined details than a Class 2 built from issued-for-bid documents. The class is noted on the summary page so the reader knows how to use the number.
Can you break out dampproofing and waterproofing bid estimate lines separately for a foundation?
Yes. Dampproofing coating on the exterior face of a foundation wall and waterproofing membrane below grade are separate scope items under Division 07, and we keep them on separate lines with their own units. Footing, foundation wall, retaining wall, and crawl space conditions are each measured where they occur. That separation matters when the specification requires one and not the other.
Do you take off vapor retarder under slab and slab edge details?
Vapor retarder under slab is measured in square feet of slab area plus a lap and perimeter allowance, with the slab edge and penetration seals counted separately. We read the thickness and permeance class from the specification rather than assuming a default. Where the slab meets a foundation wall, the transition detail is listed so the barrier continuity is visible in the estimate.
How do your waterproofing estimating services handle drawing scale and field verification?
Quantities are scaled from the drawing at its stated scale, and any sheet without a reliable scale is flagged rather than guessed. Where dimensions conflict between plans and details, we note the discrepancy on the line and ask before pricing. Field verification stays with your superintendent; our takeoff records what the documents show.