SDI Member · ANSI/SDI compliant
Steel purlin supplier in Naples
High-strength C & Z steel purlins in Naples for efficient roof and wall support.
Steel Purlins for Naples job sites
General contractors and steel erectors in Naples rely on Miami Metal Deck for Steel Purlins on projects across Collier County and the Southwest Florida region. Orders for Naples ship from our Miami Gardens facility, with 1-day service to major Florida cities and delivery scheduled around your erection sequence.
Salt air and humidity near the coast in Naples favor heavier zinc coatings such as G90 galvanized. We match the finish to what your drawings call for. Projects in Naples follow the Florida Building Code wind-load requirements, so we work directly from your engineer's deck schedule, gauges and attachment details.
Product guide
Product specifications for your Naples project
Compare profiles, dimensions, material options and applications to prepare your order. Select a product below to explore its technical details.
C Purlin
The roof and wall systems on commercial buildings rely on C purlin for its combination of high strength and light weight. The C-shaped profile runs from 12 GA to 20 GA in a range of depths and gauges, conforms to ANSI standards, and comes with G60 and G90 galvanized finishes.
Dimensions and profile
| Property | Dimension |
|---|---|
| Commercial Name | C Purlin |
| Gauge | 12 to 20 |
| Thickness | 0.039" to 0.094" |
| Weights | 1.2 to 6.78 lbs/ft |
| Size Range | C4x2 to C12x3 |
| Web Depths | 4 to 12 inches |
| Flanges | 2 to 3 inches |
The C purlin line covers C4x2 to C12x3, with 4 to 12 inch web depths. Gauges 12 through 20 (thickness 0.039" to 0.094") bring weights of 1.2 to 6.78 lbs/ft, and flanges of 2 to 3 inches come with lip dimensions up to 0.787 inches.
Sizes, thicknesses and weights
| Purlin Size | Thickness | Weight (lbs/ft) | Gauge | Web | Flange | Lip |
|---|---|---|---|---|---|---|
| C12x3-12 | 0.094 | 6.78 | 12 | 12 | 3 | 0.787 |
| C12x3-14 | 0.075 | 5.4 | 14 | 12 | 3 | 0.787 |
| C10x3-12 | 0.094 | 5.48 | 12 | 10 | 3 | 0.787 |
| C10x3-14 | 0.075 | 4.37 | 14 | 10 | 3 | 0.709 |
| C8x3-12 | 0.094 | 4.87 | 12 | 8 | 3 | 0.787 |
| C8x3-14 | 0.075 | 3.86 | 14 | 8 | 3 | 0.709 |
| C8x3-16 | 0.059 | 3.02 | 16 | 8 | 3 | 0.591 |
| C6x2.5-12 | 0.094 | 3.83 | 12 | 6 | 2.5 | 0.709 |
| C6x2.5-14 | 0.075 | 3.03 | 14 | 6 | 2.5 | 0.669 |
| C6x2.5-16 | 0.059 | 2.41 | 16 | 6 | 2.5 | 0.630 |
| C6x2.5-18 | 0.047 | 1.94 | 18 | 6 | 2.5 | 0.591 |
| C5x2-12 | 0.094 | 3.19 | 12 | 5 | 2 | 0.630 |
| C5x2-14 | 0.075 | 2.5 | 14 | 5 | 2 | 0.630 |
| C5x2-16 | 0.059 | 1.99 | 16 | 5 | 2 | 0.591 |
| C5x2-18 | 0.047 | 1.59 | 18 | 5 | 2 | 0.591 |
| C5x2-20 | 0.039 | 1.35 | 20 | 5 | 2 | 0.591 |
| C4x2-20 | 0.039 | 1.20 | 20 | 4 | 2 | 0.472 |
| C4x2-18 | 0.047 | 1.41 | 18 | 4 | 2 | 0.472 |
| C4x2-16 | 0.059 | 1.76 | 16 | 4 | 2 | 0.512 |
| C4x2-14 | 0.075 | 2.21 | 14 | 4 | 2 | 0.512 |
| C4x2-12 | 0.094 | 2.82 | 12 | 4 | 2 | 0.512 |
Gauges and thicknesses
| Gauge | Bare steel thickness (in) | Weight (lbs/ft) | Typical applications |
|---|---|---|---|
| 12 | 0.094 | Up to 6.78 lbs/ft | Heavy structural applications, large spans. |
| 14 | 0.075 | Up to 5.4 lbs/ft | Standard commercial structural support. |
| 16 | 0.059 | Up to 3.02 lbs/ft | Medium-duty roof and wall support. |
| 18 | 0.047 | Up to 1.94 lbs/ft | Light-duty applications. |
| 20 | 0.039 | Up to 1.35 lbs/ft | Light framing and small spans. |
Because C purlins come in gauges 12 through 20, you can fit the section to your load and span. Gauges 12 and 14 are the better match for large structural work and heavy roofing loads. Gauges 18 and 20 handle lighter framing and short spans, and they save weight and cost.
Finishes and coatings
| Finish | Details |
|---|---|
| Galvanized G60 | Zinc coating of 0.6 oz/ft². Recommended for general environments. |
| Galvanized G90 | Zinc coating of 0.9 oz/ft². Ideal for highly corrosive environments. |
| Prime-Painted | Provides a base coat for additional protection or paint adhesion. |
| Bare Steel | Unfinished; typically for indoor use or controlled environments. |
Galvanized (G60 and G90) and prime-painted finishes are offered on C purlins. Use G60 for general environments for corrosion protection. G90 adds a heavier zinc coating for coastal or high-humidity settings. Prime-painted gives a base coat for jobs that need further coating.
Material and finish options
We roll our C purlins from 55 KSI high-strength steel and offer three choices: galvanized coatings that meet ANSI standards for corrosion resistance, painted finishes for a tailored look, and bare steel for custom uses. Each coating is chosen to improve durability and performance.
Custom lengths
Need 6′-0″ pieces for a smaller project or spans of up to 40′-0″ for a larger one? We handle every length precisely and efficiently. Custom cutting gives an optimal fit with minimal waste.
C Purlin features
Our C purlins pair a high strength-to-weight ratio with simple installation and corrosion-resistant finishes. Contractors in Naples can specify them for industrial buildings, solar panel racking, agricultural structures, and commercial roofing and wall systems.
High Strength-to-Weight Ratio
Offers excellent load-bearing capacity with little weight, cutting structural dead loads and easing installation.
Easy and Fast Installation
The light, symmetrical shape shortens labor time and keeps roof and wall installation straightforward.
Galvanized or Prime-Painted Finish
Durability and corrosion resistance improve with G60/G90 galvanized or prime-painted finishes.
Ideal for Custom Applications
Suits industrial buildings, solar panels, agricultural structures, and many other commercial structural applications.
Compliance with SDI Standards
Follows Steel Deck Institute and ANSI guidelines to ensure quality and code compliance.
Versatile Design Options
Sizes C4x2 through C12x3 and gauges 12 to 20 handle a broad set of structural needs and load requirements.
Installation and connections
Installation practices
- Set C purlins perpendicular to the primary structural supports.
- Anchor each one at every support with bolts, welds, or self-drilling screws.
- Where purlins overlap, fasten them with bolts or screws at 12" o.c.
Fasteners and attachments
- Secure purlins to primary frames using ½" diameter bolts.
- Use #12 self-drilling screws at 6" o.c. along supports; at overlaps, space them at 12" o.c.
- Lapped joints take #12 self-drilling screws at 12" o.c.
Confirm the profile, gauge, span, loads and connections against your project drawings and the applicable product load tables before ordering.
Applications
Roof and Wall Structural Framing
A strong choice for commercial and industrial buildings, supporting roofing and wall cladding. Works in both vented and non-vented structures.
Mezzanine and Racking Support
Its strength suits mezzanine floors and industrial racking. Warehouses and factories that need durable structural support benefit most.
Standards and product documentation
Design and performance of the C purlin follow SDI (Steel Deck Institute) specifications, held to a high standard.
C Purlin questions
What is a C purlin, and what is it used for?
It is a cold-formed steel member with a 'C' shaped section. Its main job is structural support in the roofs and walls of industrial, commercial, and agricultural buildings.
How does a C purlin differ from a Z purlin?
The C purlin has a symmetrical 'C' section that gives strength and stability, and it works best in simple-span applications. A Z purlin has a 'Z' section that lets pieces overlap, which adds rigidity on longer continuous spans.
Which gauges and materials do C purlins come in?
Gauges 12 to 20 are available. They are made from galvanized steel (G60/G90) or prime-painted steel, depending on what the project requires.
What are the benefits of C purlins in Naples?
They offer high structural strength in a light profile, quick installation thanks to a standardized design, and flexibility across building types. Galvanizing adds corrosion resistance, and durability keeps maintenance and cost down.
Are custom C purlins available?
Yes. We make custom C purlins to order, with length (6' to 40'), gauge, and finish set to your project specifications.
Z Purlin
Z purlin is widely used for roof and wall applications, offering superior load-bearing capacity and an overlapping design that extends spans. It comes in gauges 12–18, meets ANSI standards, and is finished with G60 and G90 galvanizing.
Dimensions and profile
| Property | Dimension |
|---|---|
| Commercial Name | Z Purlin |
| Gauge | 12 to 18 |
| Thickness | 0.047" to 0.094" |
| Weights | 1.94 to 6.78 lbs/ft |
| Size Range | Z6x2.5 to Z12x3 |
| Web Depths | 6 to 12 inches |
| Flanges | 2.5 to 3 inches |
Sizes range from Z6x2.5 to Z12x3, and web depths measure 6 to 12 inches. Gauges 12 through 18 (0.047" to 0.094" thick) weigh 1.94 to 6.78 lbs/ft. Flange widths are 2.5 to 3 inches, with lip dimensions up to 0.787 inches.
Sizes, thicknesses and weights
| Purlin Size | Thickness | Weight (lbs/ft) | Gauge | Web | Flange | Lip |
|---|---|---|---|---|---|---|
| Z12x3-12 | 0.094 | 6.78 | 12 | 12 | 3 | 0.787 |
| Z12x3-14 | 0.075 | 5.4 | 14 | 12 | 3 | 0.787 |
| Z10x3-12 | 0.094 | 5.48 | 12 | 10 | 3 | 0.787 |
| Z10x3-14 | 0.075 | 4.37 | 14 | 10 | 3 | 0.709 |
| Z8x3-12 | 0.094 | 4.87 | 12 | 8 | 3 | 0.787 |
| Z8x3-14 | 0.075 | 3.86 | 14 | 8 | 3 | 0.709 |
| Z8x3-16 | 0.059 | 3.02 | 16 | 8 | 3 | 0.591 |
| Z6x2.5-12 | 0.094 | 3.83 | 12 | 6 | 2.5 | 0.709 |
| Z6x2.5-14 | 0.075 | 3.03 | 14 | 6 | 2.5 | 0.669 |
| Z6x2.5-16 | 0.059 | 2.41 | 16 | 6 | 2.5 | 0.630 |
| Z6x2.5-18 | 0.047 | 1.94 | 18 | 6 | 2.5 | 0.591 |
Gauges and thicknesses
| Gauge | Bare steel thickness (in) | Weight (lbs/ft) | Typical applications |
|---|---|---|---|
| 12 | 0.094 | Up to 6.78 lbs/ft | Heavy structural applications, large spans. |
| 14 | 0.075 | Up to 5.4 lbs/ft | Standard commercial structural support. |
| 16 | 0.059 | Up to 3.02 lbs/ft | Medium-duty roof and wall support. |
| 18 | 0.047 | Up to 1.94 lbs/ft | Light-duty applications and agricultural buildings. |
Gauges 12 through 18 allow you to match load and span needs. Use the heavier gauges (12 and 14) for large structural applications. Gauges 16 and 18 are for medium to light-duty work in commercial and agricultural structures.
Finishes and coatings
| Finish | Details |
|---|---|
| Galvanized G60 | Zinc coating of 0.6 oz/ft². Recommended for general environments. |
| Galvanized G90 | Zinc coating of 0.9 oz/ft². Ideal for highly corrosive environments. |
| Prime-Painted | Provides a base coat for additional protection or paint adhesion. |
| Bare Steel | Unfinished; typically for indoor use or controlled environments. |
Galvanized (G60 and G90) and prime-painted finishes are available on Z purlins. G60 resists corrosion in general environments. G90 has an enhanced zinc coating for coastal or high-humidity applications. A prime-painted Z purlin carries a protective base coat for projects that need additional coatings.
Material and finish options
Our Z purlins are made from high-strength 55 KSI steel. Options include corrosion-resistant galvanized finishes meeting ANSI standards, painted finishes for tailored aesthetics, and bare steel for custom applications. Each finish helps durability and performance.
Custom lengths
Smaller projects can order precise lengths from 6′-0″, and larger constructions can order spans up to 40′-0″. We handle all dimensions with precision and efficiency, and custom lengths mean an optimal fit and minimal waste.
Z Purlin features
Our Z purlins deliver superior load-bearing capacity, an overlapping design that stretches spans, and corrosion-resistant finishes. They are a strong match for large-scale commercial, industrial, and agricultural roofing and wall systems, including Naples projects.
Superior Load-Bearing Capacity
Built for higher structural loads, with an overlapping design that gives continuous-span efficiency.
Overlapping for Extended Spans
Z purlins overlap and interlock at intermediate supports, acting as a continuous beam for better structural efficiency over longer distances.
Corrosion-Resistant Finishes
G60 and G90 galvanized or prime-painted finishes stand up to harsh environmental conditions with excellent durability.
Cost-Effective
Longer spans and fewer intermediate supports lower material and labor costs on large roofing and wall systems.
Compliance with SDI Standards
Steel Deck Institute and ANSI guidelines are met, supporting quality and code compliance.
Versatile Applications
Sizes Z6x2.5 to Z12x3 and gauges 12–18 serve commercial, industrial, and agricultural structural needs.
Installation and connections
Installation practices
- Place Z Purlins perpendicular to the primary structural supports.
- Anchor at every support with bolts, welds, or self-drilling screws.
- At intermediate supports, overlap and interlock the purlins and fasten at 12" o.c.
Fasteners and attachments
- Secure purlins to primary frames using ½" diameter bolts.
- Use #12 self-drilling screws at 6" o.c. along supports; at overlaps, space them at 12" o.c.
- Lapped joints take #12 self-drilling screws at 12" o.c.
Confirm the profile, gauge, span, loads and connections against your project drawings and the applicable product load tables before ordering.
Applications
Long-Span Roofing Systems
Large commercial and industrial roofs that need continuous spans and fewer intermediate supports are a natural fit. The overlapping design makes the most of structural efficiency along long roof runs.
Continuous Wall Cladding Support
As continuous wall girts, Z purlins hold up metal cladding on industrial, commercial, and agricultural buildings, and the interlocking profile adds strong lateral stability.
Standards and product documentation
Z purlins comply with SDI (Steel Deck Institute) specifications, supporting high design and performance standards.
Z Purlin questions
What is a Z purlin used for?
A Z purlin is a cold-formed steel structural member shaped like the letter 'Z'. Roof purlins and wall girts in commercial, industrial, and agricultural metal buildings are its main uses.
What does a Z purlin do better than a C purlin?
It overlaps and interlocks at intermediate supports, which creates continuous-beam behavior. Compared with simple-span C purlins, that means greater efficiency and load capacity across longer spans.
Which sizes and gauges are available for Z purlins?
They run from Z6x2.5 to Z12x3 in gauges 12 through 18, with web depths from 6 to 12 inches and flanges from 2.5 to 3 inches.
What finishes can I get on Z purlins?
G60 and G90 galvanized finishes protect against corrosion, and prime-painted finishes are offered for projects needing additional coatings.
Do you offer custom Z purlins in Naples?
Yes. We make custom Z purlins to your length (6' to 40'), gauge, and finish, in line with project specifications.
Before you order
Order Steel Purlins for your Naples project
Share your drawings or a material list and our team will check quantities, profiles and cut lengths. We also prepare takeoffs and shop drawings, then send pricing and delivery options for the Naples job site.
Start your quoteHelpful details for an accurate quote
- Your Naples project address and when you need material on site.
- Drawings or a material list with quantities and cut lengths.
- Specified profile, dimensions, gauge and finish.
- Connection details, load tables and any supporting documentation.
How We Work
We Guide You Through the Process
From manufacturing to delivery, we ensure precision, efficiency, and compliance with industry standards.
Takeoff and Shop Drawings Services
We provide specialized takeoff services for accurate quotations and detailed shop drawings to produce optimized cutting lists for sheets, ensuring efficient execution and waste-free outcomes in your projects.
Manufacture
We manufacture metal decks to SDI and ANSI standards, ensuring strength, durability, and compliance. We provide custom lengths and high-precision fabrication for optimized performance in roof, floor, and form deck applications.
Swift Deliveries & Nationwide Reach
While based in South Florida, we serve clients nationwide, ensuring quality, efficiency, and timely deliveries across the U.S., reflecting our commitment to excellence without boundaries.
Frequently Asked Questions
Do you supply steel purlins in Naples?
Yes. We deliver C and Z purlins to Naples with 1-day delivery available. Contact us at 305-760-2575.
What is the difference between C and Z purlins?
Z purlins overlap and interlock at supports for continuous-span efficiency. C purlins suit simple-span applications where continuity is not required.
What is the function of a steel purlin?
A steel purlin supports roof and wall sheeting. It transfers loads from the cladding to the main structural frame and runs horizontally across the rafters or columns of the building.
Which purlin types do most buildings use?
Most use C or Z Purlins. C Purlins are chosen for simple, non-overlapping spans. Z Purlins overlap and interlock to form continuous spans, giving better structural efficiency over long distances.
What distinguishes a C Purlin from a Z Purlin?
At intermediate supports, Z purlins can overlap and interlock, giving more efficient continuous beam behavior. C purlins are used in simple spans where that continuity is not required.
Are purlins suitable for roof and wall support?
They are. C and Z purlins serve as roof purlins for roof panels and as wall girts for wall cladding, which is why metal building systems use them so widely. Contractors in Naples use both.
Which materials and coatings can I order?
Galvanized steel with G90 or G60 coatings is available for every purlin, giving corrosion resistance and long-term performance in commercial, industrial, and agricultural environments.