Custom stone shower jamb cost in Ontario depends on more than the amount of material used. A shower opening may require only a few narrow stone pieces, but those pieces still need product selection, measurement, layout, fabrication, finished edges, handling and installation.
This is why a custom jamb cannot be priced accurately by comparing its square footage with a kitchen countertop or the retail price of a prefabricated shower threshold. A small custom project may use limited material while requiring several precision cuts, exposed edges and a separate site visit.
The final price depends on the material, number and dimensions of pieces, edge construction, site readiness, installation access and whether the jamb is coordinated with a threshold, niche, bench or vanity.
This guide explains the cost factors and public price references homeowners can use before requesting a project-specific quotation. Teccorp Stone provides professional measurement, fabrication and installation for applicable custom stone shower jamb projects in Ontario.
There is no reliable universal price for a custom shower jamb because the term may describe one threshold strip, two vertical side pieces, a complete three-sided opening or a larger package containing niches and other bathroom stone.
Public Canadian retail prices provide a useful product-only reference:
| Reference Product or Service | Public Price Reference | What Is Not Included |
|---|---|---|
| Prefabricated engineered-stone threshold, approximately 4–5 × 36 inches | Approximately $28–$32 CAD per piece | Custom measurement, resizing, special edges, delivery and installation |
| Prefabricated engineered-stone jamb, approximately 6 × 76–95 inches | Approximately $76–$90 CAD per piece | Custom angles, matching, fabrication, site verification and installation |
| General Toronto stone or countertop work | Public guides commonly show about $40–$150 CAD per square foot | This rate may not apply to small custom jamb work or minimum project charges |
| Custom measured and installed shower jamb | Project-specific quotation required | The quote must identify material, pieces, edges, measurement, fabrication, installation and access |
Public references checked in July 2026. Prices may change and generally exclude HST unless a seller states otherwise. They are market examples, not Teccorp Stone quotations.
Cost Planning Rule
Do not multiply jamb square footage by a countertop rate and treat the result as a complete price. Small custom pieces are strongly affected by minimum material, measurement, fabrication, edge and site-service requirements.

A prefabricated threshold or jamb is manufactured in a standard colour, length, width and edge configuration. It may be economical when the opening accepts the available dimensions and the installer can complete any permitted adjustment.
A custom-fabricated jamb is produced for the verified opening and may include non-standard widths, wall angles, selected edge profiles and coordinated pattern placement.
The two options should not be compared by product price alone.
A standard piece may work when:
The retail price normally covers only the manufactured piece. Cutting, installation materials, labour and responsibility for final fit may remain separate.
Custom fabrication may be more appropriate when:
Custom work costs more than buying a standard strip because it includes project-specific labour and responsibility—not simply more material.
Quartz, porcelain, granite and marble have different product prices and fabrication requirements. A readily available remnant may reduce material cost, while a specific full slab, rare natural pattern or special-order porcelain can increase it.
A remnant is economical only when it provides enough suitable material for every required piece and the colour, thickness and condition meet the project requirements.
A single threshold costs less to fabricate than a complete package containing two vertical jambs, one upper return and a curb cap. Adding niche shelves, bench tops or half-wall caps increases material layout, edge work and handling.
Longer and wider pieces use more material and may be harder to transport through a house or condominium. Unusual thickness, laminated edges or thin porcelain construction can also change fabrication requirements.
A simple eased edge normally requires less work than multiple polished edges, large bevels, mitred returns or built-up profiles. The quotation should state which faces and edges will be visible.
Out-of-square ends, hardware-related notches and connections with thresholds or niches require additional measurement and fabrication. Directional marble, quartzite and manufactured veining may also require a more selective layout.
Professional site verification, delivery and installation are separate cost components even when the pieces use little square footage. A quotation should identify whether these services are included.
Condominium access hours, elevator reservations, parking, long carrying routes, stair access and restricted working space may affect handling and scheduling.
The project should disclose these conditions before approval so that the quotation reflects the actual installation environment.
Material cost depends on the exact product, available thickness, required quantity and whether suitable stock or remnant material is available. Fabrication requirements can be as important as the purchase price of the slab.
Standard engineered-stone thresholds and jamb strips usually have the lowest product-only price when the available colour, width, length and edge suit the opening.
Potential additional costs include:
A low retail price does not guarantee a low installed price if the standard piece requires significant modification or does not fit the constructed opening.
Quartz offers consistent colours and may be available as a remnant from another project. This can reduce the need to purchase a full slab, provided the remnant has sufficient length, width and thickness for every required piece.
Cost may increase when:
Readily available granite may provide good value when a suitable remnant is available. Premium colours, imported products or slabs with highly selective patterns can cost more.
Natural features should be considered during layout. Avoiding fissures or selecting a particular section of the slab may reduce the usable material and increase waste.
Marble and quartzite prices vary substantially according to colour, origin, availability and slab quality.
The least expensive slab section is not always suitable for a narrow, highly visible jamb. Natural features, filled areas and vein position must be reviewed before cutting.
Porcelain and ultra-compact materials may require specialized cutting, handling, edge construction and full support. A thin product can use less material by volume but still involve greater fabrication complexity.
Mitred edges, pattern alignment and exposed product bodies can increase labour. The quotation should identify the exact product and proposed edge rather than using the word “porcelain” as a complete specification.
Remnant Cost Rule
A remnant can reduce material cost only when it provides the required dimensions, thickness, finish and visual quality. Measurement, fabrication, delivery and installation costs still apply.
The following comparison shows how scope affects cost. The symbols indicate relative project complexity—not fixed Teccorp Stone prices.
| Project Scenario | Typical Stone Scope | Relative Cost | Main Cost Drivers |
|---|---|---|---|
| Threshold only | One curb-cap or transition piece | $ | Length, width, exposed edges and installation minimums |
| Two side jambs | Two vertical return pieces | $$ | Height, wall variation, visible edges and pattern matching |
| Complete framed opening | Two side jambs, upper return and threshold | $$$ | Four-piece coordination, corners, edges and glass relationships |
| Integrated bathroom package | Jambs, threshold, niche, bench, wall cap or vanity | $$$$ | Material quantity, layout, multiple pieces and installation scope |
A larger package costs more overall but may use the slab and project visits more efficiently than ordering each piece separately at different stages.

A complete quote may contain several services that are not visible in the finished square footage.
Site verification may document opening dimensions, wall depth, angles, connected surfaces and installation access. A second visit may be required if the project is measured before the necessary conditions are complete.
Fabrication cost may include:
The quotation should state how many edges are finished. A price described only as “fabrication included” may not identify whether every visible face has been considered.
Installation cost may reflect crew time, transportation, carrying route, dry fitting, setting materials and perimeter joints.
The stone installer should not be expected to include unrelated work unless it appears in the quotation. Waterproofing, tile correction, framing, structural backing, plumbing and glass installation are normally separate responsibilities.
Coordinating several bathroom pieces can increase the quotation while improving material use and reducing separate project visits.
Connected items may include:
Request the base jamb price and optional connected pieces as separate line items. This shows which additions change the budget and prevents uncertainty about what is included.
Learn more about coordinating shower jambs and niches or review the dedicated guide to stone shower thresholds and curbs.
Two totals cannot be compared fairly unless they cover the same scope.
| Quote Item | What to Confirm |
|---|---|
| Material | Exact product, colour, thickness, finish and whether a slab or remnant is included |
| Pieces | Quantity, dimensions and connected threshold, niche or bench components |
| Edges | Which visible edges and faces will be finished |
| Site services | Measurement, delivery, installation and additional visit conditions |
| Exclusions | Waterproofing, tile, framing, glass, plumbing, demolition and disposal |
| Tax and access | Whether HST, parking, elevator or condominium requirements are included |
Cost can often be controlled without reducing fabrication quality.
The lowest initial material price does not always produce the lowest completed cost. A product that requires extensive adjustment, separate installers or replacement may cost more overall than a correctly planned custom piece.

Provide:
Preliminary dimensions help define the scope but do not replace professional verification for final fabrication.
A project-specific quote is required. The term may describe one threshold, two side jambs or a complete opening. Material, edges, measurement, installation and access affect the total.
Retail pieces use standard sizes, colours and edges and are sold as products. Their price generally excludes custom fitting, special fabrication, delivery and installation.
Yes, when a suitable remnant provides the required dimensions, thickness, finish and condition. Fabrication and site-service costs still apply.
Not universally. Product collection, slab availability, remnant supply and fabrication requirements can be more important than the material category.
That depends on the quotation. Confirm whether site verification, delivery, setting materials and installation are included or separately priced.
Not automatically. Ask for each side jamb, upper return, threshold and connected piece to be identified.
Not unless specifically stated. Waterproofing, framing, tile, plumbing and glass are normally separate project responsibilities.
It can when parking, elevator reservations, restricted work hours or long carrying routes add handling or scheduling requirements.
Confirm whether each quotation includes or excludes HST so the totals are compared on the same basis.
An accurate quotation begins with a clearly defined stone scope. Share project photographs, approximate dimensions, location, material preferences and available drawings with Teccorp Stone.
Teccorp Stone provides project review, professional measurement, custom fabrication and stone installation for applicable shower-jamb projects across Toronto and GTA service areas. Waterproofing, construction and glass responsibilities should be coordinated separately.
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Share the opening, required pieces, material direction and site conditions for a quotation based on the actual project scope.
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