SDI Member · ANSI/SDI compliant
Steel purlin supplier in Cape Coral
High-strength C & Z steel purlins in Cape Coral for efficient roof and wall support.
Steel Purlins for Cape Coral job sites
Miami Metal Deck supplies Steel Purlins to contractors, erectors and fabricators building in Cape Coral and across Lee County and the Southwest Florida region. We ship to Cape Coral from Miami Gardens, offering 1-day service to major Florida cities and coordinating freight with your site schedule.
Salt air and humidity near the coast in Cape Coral favor heavier zinc coatings such as G90 galvanized. We match the finish to what your drawings call for. We supply to the gauges, lengths and finishes on your approved drawings, which are designed to the Florida Building Code requirements that apply in Lee County.
Product guide
Product specifications for your Cape Coral project
Compare profiles, dimensions, material options and applications to prepare your order. Select a product below to explore its technical details.
C Purlin
Roof and wall applications commonly use C purlin because it is both strong and light. This C-shaped section comes in depths and gauges from 12 GA to 20 GA, follows ANSI standards, and is finished with G60 or G90 galvanizing.
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 |
C purlins span from C4x2 up to C12x3, with web depths between 4 and 12 inches. Gauges 12 to 20 correspond to thicknesses of 0.039" to 0.094" and weights from 1.2 to 6.78 lbs/ft. Flanges measure 2 to 3 inches, with lips 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
Our C purlins are rolled from high-strength 55 KSI steel. Pick a corrosion-resistant galvanized finish that meets ANSI standards, a painted option when appearance matters, or bare steel for custom applications. Every finish is meant to extend durability and performance.
Custom lengths
Lengths start at 6′-0″ for smaller jobs and stretch to 40′-0″ for large construction. We cut each piece precisely, so the purlins fit well and little material is wasted on Cape Coral job sites.
C Purlin features
Our C purlins pair a high strength-to-weight ratio with simple installation and corrosion-resistant finishes. Contractors in Cape Coral can specify them for industrial buildings, solar panel racking, agricultural structures, and commercial roofing and wall systems.
High Strength-to-Weight Ratio
Carries heavy loads yet stays light, which lowers structural dead load and makes handling and installation easier.
Easy and Fast Installation
A lightweight, symmetrical section cuts labor hours and simplifies erection in roof and wall systems.
Galvanized or Prime-Painted Finish
Choose G60 or G90 galvanized, or prime-painted, for better durability and corrosion resistance.
Ideal for Custom Applications
Works across industrial buildings, solar panels, agricultural structures, and many other commercial structural uses.
Compliance with SDI Standards
Conforms to Steel Deck Institute and ANSI guidelines for quality and code compliance.
Versatile Design Options
Sizes from C4x2 to C12x3 and gauges 12 to 20 cover a wide spread of structural needs and loads.
Installation and connections
Installation practices
- Place C purlins perpendicular to primary structural supports.
- At each support, anchor with bolts, welds, or self-drilling screws.
- Overlapped purlins are secured 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
These purlins give strong support to roofing and wall cladding on commercial and industrial buildings, and they work in vented or non-vented structures.
Mezzanine and Racking Support
Mezzanine floors and industrial racking get excellent strength here, which is ideal for warehouses and factories needing durable structural support.
Standards and product documentation
This C purlin is built to SDI (Steel Deck Institute) specifications, which sets a high bar for design and performance.
C Purlin questions
What is a C purlin used for?
A C purlin is a cold-formed steel member whose section looks like the letter 'C'. It serves mainly as structural support in the roofs and walls of industrial, commercial, and agricultural buildings.
Should I choose a C purlin or a Z purlin?
Choose a C purlin for simple-span applications, where its symmetrical 'C' shape gives strength and stability. A Z purlin is shaped like a 'Z' and overlaps at supports, which adds rigidity on longer continuous spans.
What gauges and materials are offered for C purlins?
Gauges 12 to 20 are offered, in galvanized steel (G60/G90) or prime-painted steel, as the project requires.
Why use C purlins?
They combine high structural strength with a lightweight profile and install easily because of their standardized design. They suit many construction types, resist corrosion when galvanized, and stay cost-efficient with low maintenance. Many Cape Coral contractors choose them for that reason.
Do you make custom C purlins?
Yes. Custom C purlins can be ordered to specific length (6' to 40'), gauge, and finish, to match project specifications.
Z Purlin
For roof and wall applications, Z purlin offers superior load-bearing capacity, and its overlapping design carries longer spans. Gauges 12–18 are available, the product meets ANSI standards, and G60 and G90 galvanized finishes are offered.
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 |
Z purlins cover Z6x2.5 to Z12x3, with web depths of 6 to 12 inches. Gauges 12 through 18 (thickness 0.047" to 0.094") carry weights of 1.94 to 6.78 lbs/ft. Flanges are 2.5 to 3 inches, and lips reach 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. |
Z purlins come in gauges 12 through 18 to suit different loads and spans. Gauges 12 and 14 are best for big structural applications, and gauges 16 and 18 handle medium to light-duty work in commercial and agricultural structures for Cape Coral builders.
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
Each Z purlin is rolled from high-strength 55 KSI steel. Galvanized finishes meeting ANSI standards provide corrosion resistance, painted options offer tailored aesthetics, and bare steel serves custom applications. Every finish is designed to enhance durability and performance.
Custom lengths
From 6′-0″ lengths on smaller projects to long spans of up to 40′-0″ on larger ones, we supply every dimension with precision and efficiency. Our custom length service gives an optimal fit and minimal waste.
Z Purlin features
Our Z purlins combine superior load-bearing capacity with an overlapping design for extended spans and corrosion-resistant finishes, making them ideal for large-scale commercial, industrial, and agricultural roofing and wall systems in Cape Coral.
Superior Load-Bearing Capacity
Engineered for higher structural loads, with an overlapping design that provides continuous-span efficiency.
Overlapping for Extended Spans
Overlapping and interlocking at intermediate supports, Z purlins behave like a continuous beam and are more efficient over longer distances.
Corrosion-Resistant Finishes
Durable G60 and G90 galvanized or prime-painted finishes resist harsh environmental conditions.
Cost-Effective
Fewer intermediate supports and longer spans save material and labor on large-scale roofing and wall systems.
Compliance with SDI Standards
Guidelines from the Steel Deck Institute and ANSI are followed, ensuring quality and code compliance.
Versatile Applications
Sizes Z6x2.5 to Z12x3 and gauges 12–18 support commercial, industrial, and agricultural structures.
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
The Z purlin conforms to SDI (Steel Deck Institute) specifications, which keeps design and performance standards high.
Z Purlin questions
What is a Z purlin, and what is it for?
A Z purlin is a cold-formed steel member with a 'Z' shaped section. It is used mainly as roof purlins and wall girts in commercial, industrial, and agricultural metal building systems.
Why choose Z purlins over C purlins?
Z purlins overlap and interlock at intermediate supports, producing continuous-beam behavior. That gives greater structural efficiency and capacity on longer spans than simple-span C purlins.
What sizes and gauges do Z purlins come in?
Sizes run from Z6x2.5 to Z12x3 in gauges 12 through 18, with web depths of 6 to 12 inches and flanges of 2.5 to 3 inches.
Which finishes are offered on Z purlins in Cape Coral?
G60 and G90 galvanized finishes provide corrosion resistance, and prime-painted finishes serve projects that need additional coatings.
Can Z purlins be made to custom specifications?
Yes. Custom Z purlins are available with length (6' to 40'), gauge, and finish tailored to your project.
Ordering made simple
Steel Purlins for Cape Coral construction
Start with your plans or a takeoff. We review the profile, gauge, quantities and lengths, help with shop drawings when you need them, and come back with pricing and a delivery plan for Cape Coral.
Send your project requirementsHelpful details for an accurate quote
- Product profile or series, dimensions, gauge and specified finish.
- Required quantities, sheet or member lengths, and project drawings.
- Project address in Cape Coral, delivery date and site access requirements.
- Any specified load tables, connection details or 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 Cape Coral?
Yes. We deliver C and Z purlins to Cape Coral 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 do steel purlins do?
Steel purlins hold up roof and wall sheeting and pass loads from the cladding to the main structural frame. They run horizontally across a building's rafters or columns.
Which steel purlins are most common?
C and Z Purlins. C Purlins fit simple, non-overlapping spans, whereas Z Purlins overlap and interlock for continuous spans, which makes them more structurally efficient over long distances.
How do C and Z Purlins differ most?
Z purlins overlap and interlock at intermediate supports for more efficient continuous beam behavior. C purlins are for simple-span applications where that continuity is unnecessary.
Do purlins support both roofs and walls?
Yes. C and Z purlins work as roof purlins (holding roof panels) and as wall girts (holding wall cladding), so they are versatile in metal building systems.
What materials and coatings are offered?
All purlins come in galvanized steel with G90 or G60 coatings for corrosion resistance, performing well over the long term in commercial, industrial, and agricultural environments.