How to Specify a 5V Crimp Roofing Profile (Complete Guide)

Learn about how to specify a 5v crimp roofing profile (complete guide) in roll forming machines. Profile Guide guide covering technical details

Complete Engineering & Procurement Guide

5V Crimp is a:

Exposed fastener
Residential-focused
Low to moderate rib height
Narrower cover width
Historically coastal roofing system

It is typically used for:

Residential homes
Historic restorations
Coastal housing
Light commercial buildings

Despite its simplicity, it must be precisely defined.

1️⃣ What Defines a 5V Crimp Profile?

5V Crimp typically includes:

Five V-shaped ribs across panel
V ribs at 12" centers (most common U.S. version)
Small intermediate ribs
Effective cover width around 24"

However, variations exist.

Always confirm full cross-section.

2️⃣ Standard Finished Dimensions (Common U.S. Version)

Typical 5V Crimp:

Effective cover width: 24” (610 mm)
Rib spacing: 12” centers
Rib height: approx. ½”–¾” (12–19 mm)
5 major V ribs
Small intermediate stiffener ribs

Cover width may vary slightly depending on manufacturer.

Always verify actual dimension.

3️⃣ Typical Coil Width

Because 5V has narrow cover:

Typical developed coil width:

650–700 mm range (approximate)

This depends on:

Rib height
Bend radius
Edge detail
Thickness

Never assume 610 mm coil for 24” cover.

Developed width must include bend allowance.

4️⃣ Thickness Range

5V Crimp is commonly lighter gauge.

Typical thickness:

Residential:

29 gauge (0.36–0.40 mm)

Coastal / High wind:

26 gauge (0.45–0.50 mm)

Heavy residential:

24 gauge (0.60 mm)

Thicker material increases:

Forming force
Motor load
Springback

Machine must support maximum thickness at maximum grade.

5️⃣ Material Grade

Common grades:

ASTM A653 Grade 33
ASTM A653 Grade 50

International equivalents:
G250
G350

G550 rarely required for 5V.

Higher grade increases springback and reduces forming smoothness.

6️⃣ Coating Specification

Because 5V is widely used in coastal areas:

Common coatings:

G90 galvanized
AZ50 / AZ55 Galvalume
Prepainted SMP or PVDF

Coastal environments require higher corrosion protection.

Coating impacts:

Roll surface finish requirement
Corrosion resistance
Warranty terms

7️⃣ Rib Height & Structural Performance

5V rib height is lower than:

R-Panel
IBR
Trapezoidal industrial panels

This means:

Lower structural stiffness
Shorter allowable spans

It is not suitable for:

Large industrial purlin spacing.

Wind zone analysis is important.

8️⃣ Fastener Placement Specification

5V Crimp is typically fastened:

Through the flat (valley), not rib crest.

Specify:

✔ Fastener spacing
✔ Washer type
✔ Sealant requirement
✔ Lap screw detail

Incorrect fastener placement reduces wind resistance.

🔟 Overlap & Side Lap

Typical side lap:

One rib overlap.

Must specify:

✔ Overlap width
✔ Sealant type
✔ Anti-capillary feature (if required)

Overlap design directly affects water performance.

1️⃣1️⃣ Machine Engineering Requirements

Typical 5V roll forming line:

12–16 forming stands
60–75 mm shafts
11–15 kW motor
Hydraulic stop cut

Because profile depth is shallow:

Forming load is moderate.

However, higher thickness or grade increases motor requirement.

1️⃣2️⃣ Production Speed

Typical production speeds:

20–40 m/min

Because geometry is simple.

Cutting system may limit speed at higher thickness.

1️⃣3️⃣ Tolerance Requirements

Typical tolerances:

Width ±2 mm
Rib height ±1 mm
Length ±2–3 mm

Residential markets demand good visual alignment.

Inconsistent rib spacing becomes visible quickly.

1️⃣4️⃣ Wind Zone Considerations

5V Crimp often used in:

Hurricane-prone regions.

Therefore specify:

✔ Minimum thickness
✔ Grade
✔ Fastener pattern
✔ Substrate attachment method

Geometry must align with tested wind uplift system.

Changing thickness may invalidate rating.

1️⃣5️⃣ Developed Width Reminder

Developed width must account for:

✔ V angle
✔ Bend radius
✔ Thickness
✔ Springback

Even small radius changes affect developed width.

Incorrect coil width causes:

Material waste
Edge misalignment
Overlap mismatch

1️⃣6️⃣ Export Considerations

Caribbean and Latin America may use:

Different rib spacing
Metric versions
Modified cover widths

Never export without confirming local geometry standard.

1️⃣7️⃣ Common Specification Mistakes

❌ Saying “5V” without confirming 24” cover
❌ Ignoring coastal corrosion requirements
❌ Not defining fastener pattern
❌ Guessing coil width
❌ Using too thin gauge in high wind areas
❌ Not verifying wind uplift requirement

5V errors often result in installation complaints.

1️⃣8️⃣ Final 5V Crimp Specification Checklist

Before tooling or machine approval:

✔ Confirm effective cover width
✔ Confirm rib spacing
✔ Confirm rib height
✔ Confirm edge detail
✔ Confirm thickness range
✔ Confirm steel grade
✔ Confirm coating
✔ Calculate developed width
✔ Confirm coil availability
✔ Confirm fastener pattern
✔ Confirm wind zone requirement
✔ Confirm production speed target

Only then proceed.

FAQ Section

Is 5V always 24” cover?

Most common in U.S., but confirm exact dimension.

Is 29 gauge enough for hurricane zones?

Often 26 gauge is recommended.

What is typical coil width?

Around 650–700 mm, but must be calculated.

Can 5V be run at high speed?

Yes, usually 20–40 m/min.

Is 5V structural?

Primarily residential/light-duty.

Does coating matter in coastal areas?

Yes — AZ or high zinc recommended.