Glass and Glazing Estimating and Takeoff Services

We quantify glazing from your elevations, schedules and details — framing systems by linear foot and glass by fabricated unit and makeup — with entrances, hardware, sealants and perimeter detail counted individually, delivered as an editable Excel workbook with the marked-up plan set.

Get a Free Quote

What We Take Off

Two openings of identical size can differ in price by a wide margin, and nothing on the elevation tells you which is which. The difference is in the makeup — insulated or monolithic, tempered, laminated or both, low-E coating, spacer type, interlayer, and the framing system holding it. The glass type schedule and the details are where a glazing estimate is actually built.

Storefrontframing by linear foot of member with the system and depth stated, plus infill by unit, since a storefront is a framing quantity and a glass quantity rather than an area

Curtain wallby system type, separating stick-built and unitised, with mullions and horizontals by linear foot, anchors by count, and the difference in erection method priced rather than averaged

Windowscounted by unit against the window schedule, by type, size, operation and performance, because a window is a manufactured product bought each

Glass makeupquantified by fabricated unit and specification, separating monolithic, insulated, laminated, tempered, heat-strengthened, spandrel and any combination, along with coating, interlayer and spacer type

Safety glazingidentified where code requires it at doors, sidelights, low glazing, wet areas and guards, since tempered or laminated glazing is a real premium and a code obligation rather than a choice

Impact and blast-rated glazingwhere wind-borne debris or security requirements apply, priced to the tested assembly rather than as upgraded glass

Fire-rated glazingby unit and rating, quantified separately because fire-rated assemblies cost a multiple of ordinary glazing and are listed products

Entrancesdoors counted by leaf with frame, closer, pivot or hinge, lock, exit device, pull and threshold, since an entrance is a hardware assembly more than a glass one

Automatic entrancescounted with operator, sensors, activation, controls and the power and controls interface, which is a coordination item as much as a cost

Interior glazingoffice fronts, partitions, borrowed lites, glass doors and railings by unit and system, kept separate from exterior work

Glass railings and guardsby linear foot and panel with the structural requirement, base shoe or standoff system and top rail specified

Skylights and sloped glazingby unit and area with the curb, flashing and structural interface, priced as their own system

Sealants and perimeterby linear foot at every perimeter, joint, transition and interface, separating structural silicone from weatherseal, which are different products at different rates

Perimeter detailreceptors, closures, flashings, backer rod, air and water barrier tie-in and the transition to the adjacent wall assembly

Anchorageby count and type against wind and, where applicable, seismic requirements, including embeds and anchor coordination with the structure

Thermal and structural performancethe performance requirements driving system selection, including U-factor, SHGC, air and water infiltration and structural test pressure

Access and installation methodquantified by height and method, since curtain wall set by crane, storefront from a lift and interior glazing from the floor are not comparable operations

Testing and mockupswhere the specification requires a mockup, field water testing or performance testing, each a scheduled activity with real cost

How Glass & Glazing Quantities Are Measured

Every quantity below is reported in the unit the scope is actually bought and bid in — not converted into a single convenient unit that hides where the cost sits.

Storefront framingLF by member and systemFraming is a linear quantity by member type and system depth, not an area.

Curtain wallLF of mullion plus SF of infillSplit framing from infill, and stick-built from unitised — the erection methods are not comparable.

WindowsEA by scheduleCounted against the window schedule by type, size, operation and performance. A manufactured product bought each.

GlassSF by fabricated makeupBy makeup, not by opening. Insulated laminated low-E and monolithic clear at the same size are very different prices.

Safety glazingSF or EA identifiedLocated where code requires it. Tempered and laminated carry a real premium and the requirement is not optional.

Fire-rated glazingEA by ratingListed assemblies at a multiple of ordinary glazing cost, quantified separately.

EntrancesEA by leaf with hardwareCounted with the full hardware set. An entrance is a hardware assembly more than a glass one.

Automatic entrancesEA with operator and sensorsIncluding controls and the power interface, which is a coordination item as well as a cost.

Glass railingLF and panels EAWith base shoe or standoff system and top rail, against the structural requirement.

SealantLF by type and joint sizeStructural silicone separated from weatherseal — different products, different rates, different inspection.

AnchorsEA by typeAgainst wind and seismic requirements, with embeds coordinated with the structural package.

Accessby method and heightCrane, lift, swing stage or floor level. Installation method drives a large part of the labor on this trade.

Who This Is For

General contractors carrying this trade directly, or checking a subcontractor's number before it goes into the bid.

Subcontractors pricing their own scope in this division.

Developers and owners validating a number they've already been given.

Material suppliers and distributors verifying a customer's order.

What You Receive

An itemized Excel takeoff, organized by division
A marked-up plan set — every quantity traces back to a location on the drawings
Labor, material and equipment split out separately
Waste and overage factors shown as visible line items
An assumptions and exclusions schedule

Marked-up glass & glazing plan crop

What Moves the Number on Glass & Glazing

Glass makeup. The single largest variable and the one invisible on an elevation. Insulated versus monolithic, tempered, heat-strengthened or laminated, the coating, the interlayer and the spacer each move the price, and a heavy laminated insulated unit with a high-performance coating is a multiple of clear monolithic at the same size. The glass type schedule is the document that decides it.

System selection and performance requirements. Storefront, stick-built curtain wall and unitised curtain wall are three different products with three different erection methods and three different price bands. Which one applies is driven by the required design pressure, thermal performance, building height and the schedule, and the system carries far more of the cost than the glass in many cases.

Entrance hardware. A pair of entrance doors with closers, pivots, exit devices, locks, pulls, thresholds and weathering can exceed the cost of a substantial area of adjacent glazing. Automatic entrances add operators, sensors, controls and a power interface that needs coordinating with the electrical package. Counted as doors, these are predictable; absorbed into an area figure, they vanish.

Sealant and perimeter detail. Every glazed opening has a perimeter, and every perimeter has receptors, closures, flashing, backer, sealant and a tie-in to the adjacent air and water barrier. Structural silicone glazing adds its own inspection and quality requirements. This is linear work whose quantity depends on the number and shape of openings rather than their total area.

Wind and impact requirements. Design pressure drives framing depth, anchor count and glass thickness together. In wind-borne debris regions, impact-rated assemblies are tested products at a substantial premium, and they restrict which systems can be used at all. On coastal work this frequently decides the whole package.

Installation method and access. Unitised curtain wall set by crane, stick-built assembled in place off a swing stage, storefront installed from a lift, and interior glazing carried in by hand are four different operations. Building height, site constraint, crane availability and hoisting are a large share of glazing labor and they behave nothing like the glass quantity.

Lead time and mockups. Fabricated glazing is a long-lead item, custom units longer still, and a specification requiring a performance mockup adds a build, a test and an approval cycle before production can start. That is a schedule driver on the critical path of the envelope, and it belongs in the estimate as a flagged item.

What We Need From You

A complete set is ideal, but rarely what exists. Send what you have — we will tell you at quote stage what can be quantified firm and what has to be an allowance.

Exterior elevations with openings identified and keyed
Window, storefront and curtain wall schedules — the governing documents, since makeup and performance live there
Glass type schedule with makeup, coating, interlayer and thickness for each type
Head, jamb and sill details for every condition, plus the transition to the adjacent wall assembly
Specification section for Division 08 glazing, entrances and curtain wall, including performance and testing requirements
Door and hardware schedules for entrance hardware sets
Wind design criteria — design pressure and exposure, and any wind-borne debris requirement
Structural drawings for anchorage, embeds and slab edge conditions
Energy code requirements for U-factor and SHGC

How It Works

1 Send your plans — PDF, DWG, DOC, images or ZIP, up to 100MB per file.
2 Get your quote — a flat price for the scope with a delivery date, confirmed in writing.
3 Approve — nothing starts until you confirm.
4 We take it off — quantities from the drawings and schedules.
5 Delivery — workbook, marked-up set, assumptions schedule.

How Pricing and Turnaround Work

Every project is priced individually from your drawings. Send the plan set and you get a flat quote for the scope before any work starts — no hourly billing, no open-ended engagement.

Turnaround depends on the size of the package and how many trades are in scope — which is why you get a firm delivery date with your quote rather than a generic promise.

Tools and Standards

Takeoffs are produced in Bluebeam, PlanSwift, Trimble, STACK, organized against CSI MasterFormat divisions — this scope is specified under Division 08 — Openings (08 40 00 Entrances, Storefronts and Curtain Walls; 08 80 00 Glazing).

Quantities and assemblies are read against the published standards that govern this trade, because the standard is what decides whether two apparently identical items are actually the same line item:

AAMA/WDMA/CSA 101/I.S.2/A440 — North American Fenestration Standard
ASTM E283 / E331 / E330 — air infiltration, water penetration and structural performance testing
ASTM E1105 — field testing of installed windows and curtain walls for water penetration
ASTM C1401 — structural sealant glazing
ASTM C1036 / C1048 — flat glass and heat-treated flat glass
ANSI Z97.1 and CPSC 16 CFR 1201 — safety glazing requirements
ASCE 7 — wind load provisions setting the design pressures the system must meet
NFRC procedures for U-factor and SHGC ratings where the energy code requires them

Pricing is built on RSMeans cost data localized to your project's market, then reconciled against current supplier quotes and our own completed project costs. Every estimate states its pricing basis and the date it was priced.

Why Glass & Glazing Is Estimated Wrong

Opening area priced without the makeup. The defining error in glazing estimating. Two identical openings with different glass makeups can differ in price by a multiple, and the elevation shows neither. Working from area alone, an estimator has priced a hole in a wall rather than the product going into it.

Framing not measured as a linear quantity. Storefront and curtain wall are framing systems with members priced by the foot, and a heavily divided elevation has far more framing per square foot than a clean one. Pricing the whole elevation as an area misses the division pattern entirely, and it is the division pattern that drives the framing cost.

Entrance hardware absorbed into glazing area. An entrance is a hardware assembly. Closers, pivots, exit devices, locks, thresholds and weathering on a pair of doors can exceed a substantial area of adjacent glazing, and automatic operators add controls and an electrical interface on top. Rolled into an area rate, none of it is priced.

Safety glazing locations not identified. Code requires tempered or laminated glazing at doors, sidelights, low glazing, wet areas and guards. The premium is real, the requirement is not optional, and an estimate carrying annealed glass throughout is both underpriced and non-compliant.

Perimeter sealant and receptors left out. Every opening perimeter needs receptors, closures, flashing, backer and sealant, plus a tie-in to the air and water barrier. The quantity depends on the number and shape of openings rather than their area, so an area rate is systematically wrong on an elevation with many small openings.

Access and hoisting not priced. Crane time for unitised panels, swing stage for stick-built, lifts for storefront — installation method is a major share of glazing labor and it follows building height and site constraint rather than glass quantity. An estimate silent on access has silently assumed the easiest one.

Related Estimating Services

Frequently Asked Questions

How do you price glass?

By fabricated unit and specified makeup from the glass type schedule — insulated or monolithic, tempered, heat-strengthened or laminated, with the coating, interlayer and spacer identified. Two openings of identical size with different makeups can differ by a multiple, and nothing on the elevation shows which is which.

Do you quantify framing separately from glass?

Yes. Storefront and curtain wall framing is measured by linear foot of member by system and depth, with infill quantified separately. A heavily divided elevation carries far more framing per square foot than a clean one, and that division pattern is where much of the cost sits.

Do you include entrance hardware?

Yes, counted by door leaf with the full hardware set — closer, pivot or hinge, lock, exit device, pull, threshold and weathering — plus operators, sensors and the controls interface on automatic entrances. A pair of entrances can exceed the cost of a substantial area of adjacent glazing.

Do you identify safety and fire-rated glazing?

Yes. Safety glazing is located where code requires it at doors, sidelights, low glazing, wet areas and guards, and fire-rated glazing is quantified separately by rating as the listed assembly it is, since those cost a multiple of ordinary glazing.

Do you price impact-rated glazing for coastal projects?

Yes, to the tested assembly rather than as upgraded glass. In wind-borne debris regions the impact requirement drives framing, anchorage and glass together and restricts which systems can be used at all, so it is priced as the system the specification actually permits.

Do you account for installation access and lead time?

Yes, both. Access is quantified by method — crane, swing stage, lift or floor level — because it is a large share of glazing labor and follows building height rather than glass quantity. Lead time and any required performance mockup are flagged as schedule items, since fabricated glazing sits on the envelope's critical path.

Send us your glass & glazing plans and get a quote

Upload your plans or tell us what you need. We’ll reply with pricing and a delivery date.

Need to add trades, ZIP code, target date or project state? Use the full quote form ↗