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Metal roof compare

Standing Seam vs 5V Crimp: Which Metal Roof Is Right for Florida?

Standing seam hides its fasteners in clips under locked seams, so the roof moves with heat and has no screw holes in the field. 5V crimp is screwed down through each panel, which costs less but needs screws and washers checked over time. Coastline installs both.

By Josh Hildebrand, owner of Coastline Roofing · Florida license CCC1331076 ·

You are choosing between two metal styles and want the honest tradeoffs. Here they are, side by side.

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Licensed & InsuredFlorida CCC1331076
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Short answer

What is the difference between standing seam and 5V crimp?

Standing seam hides its fasteners under locked seams. 5V crimp shows its screws on the face of the panel.

Both are metal roofs, and both can protect a Florida home for decades. The big difference is how the panels are held down. Standing seam panels lock together at raised seams, and clips hidden in the seams screw into the deck. 5V crimp panels lay flat between ribs spaced 12 inches apart, and installers screw them down through the flat part, so each screw head shows.

That one choice drives most of what follows: how the roof handles heat, where it can leak, how long it takes to install, and what it costs. Coastline installs both, 24-gauge standing seam and 5V crimp, so this page is a fair look at each rather than a push toward one.

Not sure which metal style fits?

Coastline installs both 24-gauge standing seam and 5V crimp. An inspection with a written photo report shows which one fits your slope and deck. Coastline Roofing works all over Florida (license CCC1331076).

Call (941) 896-7793 or text your town and a photo.

Side by side

How do standing seam and 5V crimp compare?

Standing seam wins on hidden fasteners and heat movement. 5V wins on simplicity and lower cost.

Standing seam and 5V crimp compared
FeatureStanding seam5V crimp
FastenersHidden clips inside the seamScrews through the face of the panel, each with a sealing washer
Heat movementClips are built to let the panel expand and contractScrews pin the panel to the deck, so it cannot move freely
Leak pointsSeams, flashing and trimSeams, flashing, trim and every screw hole
Minimum slope3:12 for snap-lock, about 0.5:12 for some mechanically seamed panels3:12, or as low as 1/2:12 with sealant on the side laps
InstallClips, then lock or machine-seam each panelScrew each panel to the deck, then overlap at the ribs
MaintenanceFlashing and trim checksCheck screws and washers as the roof ages
LookSmooth vertical lines, no screw rowsRibbed V pattern with screw rows
Josh's gauge24-gaugeAsk for the gauge in your quote
CostHigher, see the cost guideLower, see the cost guide

Sources for the table: SFS, MBCI and Design and Build with Metal on standing seam clips and slope; Metal Sales and McElroy data sheets for 5V; Gibraltar on screw washers; Metal Construction News on heat movement.

Heat and movement. Metal Construction News says standing seam clips accommodate the daily expansion and contraction. On exposed-fastener panels, it says the panels are pinned to the deck and cannot move with thermal changes, so fastener holes can wear open and let water in. That is the most useful single fact on this page for a Florida homeowner.

Screws and washers. Gibraltar calls faulty washers and roofing screws the single largest cause of metal roof leaks. It says sun and heat break the rubber down. A standing seam field has none of those holes. That does not make standing seam leak-proof, because flashing and trim can still fail on either roof.

Slope. Snap-lock panels suit a 3:12 slope or steeper, according to SFS. Mechanically seamed panels can go lower, with continuous sealant in the seam on the lowest slopes. Metal Sales lists 3:12 as the 5V minimum and notes that sealant on the side laps allows a lower slope under the building code.

Install time and cost. A standing seam crew sets clips and seams every panel, and mechanical seams need a seaming machine. That adds labor. 5V is simpler. Josh's own per-square ranges are on our metal roof cost guide, and we keep the numbers there so they stay current.

Choose by situation

Which one fits which Florida home?

No single answer fits every roof. These are the situations we see most.

You want the fewest leak points

Standing seam leaves no screw holes in the field of the roof. If fewer maintenance items matter most, it is the stronger choice.

You want the lower price

5V costs less to buy and install. If budget decides the project, 5V gives you a metal roof for less, as long as you plan for screw checks.

The roof has a low slope

A section below 3:12 usually points to mechanically seamed standing seam or to 5V with sealant on the laps. Low-slope porches may need a different system, like TPO. See our flat roofing page.

You are close to salt water

Coating and warranty matter more than profile. Most steel warranties stop 1,500 feet from salt water. Our salt air warranty guide explains the clauses.

The home is older with a ribbed look

5V can match the look of an older Florida home. Standing seam gives a more modern line. Check your HOA rules before you choose. See HOA roof approval in Florida.

You plan to stay a long time

Fewer maintenance items favor standing seam. Metal Construction News estimates a correct install can last well over 60 years. Treat that as an industry estimate, not a promise.

What they share

What do standing seam and 5V crimp have in common?

Both depend on the steel coating, the deck, the flashing and the install, not just the profile.

A good profile on a poor install still leaks. Four things matter on both roofs.

Coating. Both are usually steel with a Galvalume or galvanized coating, often painted. McElroy's paint warranty on Galvalume is void within 1,500 feet of salt water. See Galvalume vs galvanized and aluminum vs steel.

Deck. Metal panels go on a solid or closely fitted deck under the Florida Building Code text quoted by DBPR. Soft plywood has to be replaced first. See roof deck damage after a hurricane.

Fasteners. Florida Roof magazine quotes experts who say stainless steel fasteners belong near the coast, even on concealed-fastener roofs. That applies to clips on standing seam and screws on 5V.

Approvals. The panel and deck combination should match a Florida Product Approval or Miami-Dade approval. These list allowed fastener patterns and wind pressure. One 5V approval lists 117.75 pounds per square foot at 16 inches between fasteners and 206 at 8 inches. Ask for the approval number for the system you are buying.

Gauge

Gauge is steel thickness, and lower numbers mean thicker steel. Coastline installs 24-gauge standing seam. Metal Sales lists 26-gauge as standard for 5V, with 29 and 24 optional. See 24 gauge vs 26 gauge.

How to decide

How do you decide between standing seam and 5V crimp?

Match the roof to your slope, your distance from salt water, your budget and how long you will own the home.

  1. Measure your slope and your distance to salt water

    These two facts rule options in or out faster than anything else.

  2. Ask for both quotes on the same terms

    Same gauge, same coating, same underlayment, same approval. Otherwise the prices do not compare.

  3. Read the warranty salt clause

    Find the distance, and any rinse or maintenance requirement.

  4. Ask who sets the clips or screws and who checks them

    Josh reviews every job through photo reports, and the crew follows a checklist.

  5. Compare cost and care together

    A lower price with a screw check every few years can still beat a higher price. Your budget and plans decide.

Our guide to comparing two roof quotes shows how to line quotes up. For metal against other materials, see metal vs tile and metal vs shingle. For the full service, see our metal roofing page.

Who does the work. Coastline is a Palmetto-based Florida roofing contractor, and Coastline installs both styles. An inspection with a written photo report shows your slope, deck and the condition of what is there now, so you can choose with facts.

Reviews

What homeowners say about working with Coastline

★★★★★
"From beginning to end the roof was done in 2 days. One night the crew stayed until 8:00. Each evening before leaving the crew ensured the yard was cleaned. We are so happy, and our roof is beautiful!"
Sharon T.Roof replacement
★★★★★
"Russell was great to work with. He was prompt in coming out to assess our roof and very knowledgeable. ... The job was complete in 2 days once work began."
Bryan S.Roof replacement
★★★★★
"Josh was especially amazing. He was professional, patient, and took the time to explain everything clearly so I felt comfortable and informed throughout the entire process. You can tell he genuinely cares about his customers and takes pride in his work."
Madison T.Roofing customer
Keep reading

Related guides

Metal Roofing

Standing seam and 5V crimp from Coastline.

See our metal roofing →

Metal Roof Cost in Florida

Josh's per-square ranges for both styles.

Read the cost guide →

Standing Seam Metal Roof

How the hidden-fastener style works.

Learn about standing seam →

Also see what a 5V crimp roof is and best roofing for coastal Florida.

FAQ

More questions

Which lasts longer, standing seam or 5V crimp?

Neither has a fixed life. Metal Construction News estimates a correctly specified and installed standing seam roof can last well over 60 years. Exposed-fastener panels depend on washers that break down in sun and heat, per Gibraltar. Coating, salt air and install quality decide the real life of either.

Is standing seam stronger in a hurricane?

Strength depends on the tested system, not the name. Each Florida Product Approval lists allowed fastening and wind pressure for its panel and deck. For standing seam, SFS calls mechanically seamed panels the best for wind uplift values. Ask for the approval number and fastener pattern for any roof you are quoted.

Can I switch from 5V crimp to standing seam later?

Yes, as a full replacement. Standing seam needs a flat, sound deck, so the deck gets checked after the old panels come off. The new roof has its own approval and fastening, so treat it as a new roof, not an add-on. A photo report of the deck helps you plan.

Is 5V crimp good for a low-slope roof?

Metal Sales lists 3:12 as the 5V minimum slope, and says building code permits a lower slope, down to 1/2:12, when sealant is used on the side laps. Below that, a different system may fit better. Josh can tell you what applies to your roof after he looks at it.

Do both styles come in the same colors and paint?

Many makers offer both with PVDF paint finishes. McElroy lists Kynar 500 PVDF or acrylic-coated Galvalume for 5V. Paint warranties often exclude salt exposure within 1,500 feet, so read the clause for your address before you pick a color or a coating.

Sources

  1. Metal Construction News: standing seam vs exposed-fastener thermal movement
  2. SFS: Standing seam comparisons, snap-lock vs mechanically seamed
  3. Design and Build with Metal: Standing seam roofs, snap-lock vs. mechanical seam profiles (May 2024)
  4. MBCI: Standing Seam Roof System
  5. Metal Sales: 5V-Crimp Condensed Technical Reference (2024)
  6. McElroy Metal: 5V exposed fastener panel
  7. Florida Building Commission: Product Approval FL31652.01 R4, Metal Alliance 26-gauge 5V Crimp (Dec 2023)
  8. Gibraltar Building Products: Common issues with exposed metal roofing fasteners
  9. McElroy Metal: Fluropon Kynar 500 PVDF with Galvalume substrates warranty
  10. Florida Roof Magazine: Metal Roofing by the Sea (October 2021)
  11. Florida DBPR: Staff analysis for Declaratory Statement DS2014-002, quoting 2010 FBC Chapter 15 metal roof sections

Ready to compare metal styles on your roof?

Josh will look at your slope, deck and distance to salt water and send you a written photo report with a straight answer.

Call (941) 896-7793 Text (941) 345-0072
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