Countertop shop drawings and work orders: how to read them, what they must include and how to get approval before cutting

A shop drawing (also called a fabrication drawing) shows every piece of stone the shop will cut, with its dimensions, edge profiles, cutouts, seams and notes. A work order turns the approved sale into instructions for each station on the shop floor: saw, CNC, edge and polish, quality check and install. The job packet holds these together with the template, slab information, approvals and change orders. Before any stone is cut, the customer (or the general contractor) should approve the drawing and slab layout in writing, and the shop should not release the job to cutting until that signature is on file.

The documents in a countertop job

Each document has one job. Problems start when one is used for another's purpose, such as cutting from a quote drawing.

In most U.S. states a signed quote with payment terms can act as a contract, but a separate sales order or contract with clear change and approval terms protects both sides better. See contracts, deposits and payments.

How to read a countertop fabrication drawing

Drawing conventions are not fully standardized across the industry, so every shop should include a legend. These are the common elements.

The view and scale

The drawing is a plan view, looking straight down at the counters. Kitchen drawings are often printed at 1:10 or 1:20, or marked "not to scale". Trust the written dimensions, not a ruler on the printout. If you must scale a printout, check the scale against one known dimension first.

Lines

• Solid bold lines are cut lines: the outline of each piece.

• Dashed or dotted lines show things below or behind the stone for reference: cabinet faces, walls, the overhang line, appliances.

• Center lines (long dash, short dash) mark the centers of sinks, cooktops and faucet holes.

• Seam lines are usually labeled S1, S2 or SEAM.

• Hatching often marks backsplash pieces or areas of special work.

Pieces and dimensions

Each piece has a label (A, B, C or by room) and dimensions: overall length, depth at both ends if the wall is not straight, and the position of every seam. A good drawing dimensions depth at the corner and at the far end of each run. Precision should be at least 1/16 inch, and some shops use 1/32 inch for mitered work. Inches and millimeters should never be mixed on one drawing.

Edges

Each edge carries a profile callout, usually a code with a legend: eased, bevel, half bullnose, ogee and so on. Edges against walls or appliances are marked unfinished, sawn or "against wall", meaning no profile is machined. Mitered edges and waterfall panels appear as their own attached pieces with a height. See edge profiles.

Cutouts

Each cutout shows the fixture's make and model (not "undermount single bowl"), the cutout size or the maker's template reference, the reveal for undermount sinks, and the position: center lines plus the distance from the front edge and from the nearest piece end. Faucet and accessory holes show the count, the diameter (commonly about 1-3/8 inch) and the spacing from the sink centerline. Cutouts for pop-up outlets and backsplash outlets appear with their own dimensions.

Backsplash and other pieces

Backsplash, sills and side splashes appear as separate dimensioned pieces with height and thickness, not as a note.

The note block and title block

The note block lists material, color, thickness, finish (polished, honed, leathered), slab or lot numbers, and special instructions such as "support bracket under overhang" or "drainboard grooves right of sink". The title block holds the job number, customer, address, drawing revision and date, and approval signatures.

How to check a drawing before you approve it

This is the list to give a customer, and the list a shop's own reviewer should work through:

1. Revision. You are looking at the latest revision, and the date and revision number make sense.

2. Piece count. Every counter, island, vanity, backsplash and sill you expect is on the drawing.

3. Overall dimensions. They match your own measurements within about 1/8 inch. Flag anything over 1/4 inch.

4. Cutouts. The sink and cooktop models match what you bought, and the positions are where you want them.

5. Overhangs. They match what you agreed, including seating overhangs.

6. Seams. You can see where they are and accept them. They are not over a dishwasher and not through a cutout.

7. Edges. Every exposed edge has the profile you chose, and wall edges are marked unfinished.

8. Note block. Material, color, thickness, finish and slab numbers are right.

9. Backsplash. Height and pieces match what you ordered.

Do not sign a drawing with a known discrepancy. Send the correction in writing and wait for a revised drawing. Moving a seam or a sink on paper is free. After cutting it can cost hundreds to thousands of dollars.

What a work order must include

The work order is an internal document. It is created when the customer signs and pays the deposit, and it is what the shop floor works from. A complete one covers:

• Job identity: unique job number, customer, site address, sales rep, key dates and priority.

• Material: type, brand and color, thickness, finish, supplier, and the specific slab IDs or lot numbers allocated, with their yard location.

• Pieces: finished dimensions for each piece, grain or vein direction on patterned material, and a reference to the approved drawing revision.

• Edges: profile per edge, exposed versus unexposed, any buildup or miter.

• Cutouts: exact sink make and model, cutout size or template reference, reveal, cutout edge finish (undermount cutouts are polished), faucet and accessory hole count, diameter and spacing, cooktop model, outlets.

• Backsplash and other pieces: heights, thickness, sills, side splashes.

• Install details: date, site contact, access notes (stairs, narrow halls, elevator), who removes the old tops, who disconnects plumbing, cabinet status.

• Crew and stations: who templated, who programs, who installs.

• Release sign-off: a supervisor confirms the approval is on file and the drawing revision is current before cutting.

• Notes: anything unusual from the template visit, with photos.

What each station needs from it:

The work orders that cause remakes usually share the same gaps: a generic sink description instead of the model, edges not marked exposed or unexposed, no grain direction on veined stone, a missing or wrong overhang, and no supervisor release before cutting.

The job packet

A job packet (or job folder) is everything about one job in one place, so nobody has to ask the salesperson what was agreed. A complete packet has:

1. Cover sheet: job number, customer, material, sales rep, key dates, priority.

2. Sales documents: signed contract or sales order, approved quote, deposit receipt, change orders.

3. Template documents: template file, field notes, site photos, seam locations, verification checklist.

4. Approval documents: signed drawing, slab layout approval, pre-cut slab photos.

5. Fabrication documents: work order, program reference, slab assignment, quality check sign-off.

6. Install documents: crew, loading order, hardware checklist, plumbing and removal scope.

7. Completion documents: post-install checklist and photos, customer sign-off, final payment, warranty and care sheet.

Paper packets get lost, and they exist in only one place at a time. A digital job folder is searchable, backed up and visible to the office, shop and install crew at once. How long to keep it: warranty claims and contract disputes can arrive years later. Limitation periods for written contracts vary by state, and several states allow six years or more. IRS guidance on business records ranges from three to seven years depending on the situation. Many shops keep job files for five to seven years. See jobs, documents and communication.

Getting customer approval before cutting

Stone cannot be un-cut. Approval before cutting protects the customer, who gets what they chose, and the shop, which has proof of what was chosen.

What the approval should cover

• The shop drawing: every piece, seam, edge and cutout, with fixture models.

• Overhangs and backsplash heights.

• For natural stone, the slab layout: where each piece sits on the slab, the vein direction, and where fissures or inclusions fall. A pre-cut photo of each slab with the piece outlines marked, the job number visible and the seams drawn is the strongest record. See slab layout and nesting and vein matching.

• Material, color, thickness and finish.

• The change-order terms: what happens and what it costs if something changes after approval.

• A signature, printed name and date.

When to get it

A common sequence:

1. Template taken, with the customer's sign-off on seams, overhangs and cutouts on site.

2. Shop drawing and slab layout produced.

3. Drawing sent to the customer with a review deadline, commonly 24 to 48 hours.

4. Customer signs, or sends written corrections and gets a revised drawing.

5. Job released to programming and cutting.

The most defensible moment for the first signature is at the template visit, on a tablet or on the template sheet, while the customer is standing in the kitchen. Do not send drawings so close to the cutting slot that the customer has no real time to review.

Signatures and records

Electronic signatures are generally as valid as ink in the U.S. under the federal E-SIGN Act and the Uniform Electronic Transactions Act adopted by nearly every state. A signed written approval usually carries more weight than a remembered conversation. It is also the main evidence a shop has if a customer disputes a card payment as "not as described". Three records are easy to confuse and should be kept separate: the customer viewed the drawing, the customer signed the contract, and the customer approved this specific drawing revision. Only the last one authorizes cutting. Have a lawyer review your contract and approval language for your state.

Verbal approval ("looks good" on the phone) is not enough. Follow any verbal approval with a signed document before cutting.

Contractor-managed jobs

When a general contractor or builder is the customer, the contract should make the contractor responsible for homeowner approvals. In practice the shop still carries the risk if the homeowner never saw the drawing. Many shops ask for the homeowner's signature on the drawing as well, or at least send it to them for information.

On commercial projects, shop drawings go through the formal submittal process, with architect review stamps and resubmittals. See commercial specifications and submittals.

Revisions and change orders

Once a drawing is approved, every change needs control:

• Revision control. Every drawing carries a revision number or letter and date. Only the current revision goes to the shop floor. Void or remove old printouts.

• Change orders. A change after approval gets a change order stating the original spec, the new spec, the cost and schedule impact, and a new customer signature. Treat it exactly like the original approval.

• Re-template when geometry changes. A new sink, moved cabinets or a changed wall means the template no longer matches the site.

• Stop the line. If a change arrives after cutting has started, the office tells the shop immediately, and the job waits for the signed change order.

See template errors and verification for how changes after template turn into remakes.

Common mistakes

• Cutting from a quote sketch instead of an approved shop drawing.

• Generic fixture descriptions instead of make and model.

• Edges not marked finished or unfinished.

• No vein direction or slab assignment on natural stone.

• Verbal approvals, or approvals filed in someone's email instead of the job folder.

• Drawings sent the night before cutting.

• Old revisions left on the shop floor.

• Retyping dimensions from the drawing into a separate work order, where they can change silently.

Where software helps

The biggest source of drawing and work order errors is copying the same information between separate documents. In Stonify, the countertop drawing lives inside the quote, so the drawing, the quote lines, the slab layout and the drawings on the customer's documents all come from one source. Generated documents include an edge legend, and cutouts can show center lines and distances from the edges for the shop floor. Sales orders, change orders and deposit documents are generated from editable templates and filed in the project's folders. Projects can be filtered by signed sales order and deposit, and completing a deal without a signed sales order shows a warning. Installation tasks can be printed as a PDF sheet, and the installer app shows crews their job files and balance due.

FAQ

Can I move a seam after I approve the drawing? Usually yes before cutting, with a revised drawing and possibly a change order. After cutting it may mean new pieces or a new slab.

How long do customers usually get to review a drawing? Most shops allow 24 to 48 hours. A missed deadline delays the cutting slot, which the contract should say.

Does the customer need to approve the slab layout as well as the drawing? For natural stone and veined quartz, it is strongly recommended. The drawing shows the shapes. The layout shows what the stone in those shapes will look like, which is what customers dispute.

What is the difference between a shop drawing in residential and commercial work? In residential work the shop drawing is approved by the customer. In commercial work it is a formal submittal reviewed by the architect against the project specifications, often with physical samples and mockups.

Who should sign off internally before cutting? A supervisor, programmer or office manager who confirms the approval is on file, the drawing revision is current and the slabs are allocated. The templater should not be the only check.