For a house you plan to keep, standing seam is the better metal roof. It hides the fasteners, moves with the heat and has the lower leak risk. A screw down roof (also called an exposed fastener roof) costs far less up front. It makes sense for a barn, shed or shop, or for a house on a tight budget if you accept regular fastener maintenance. The rest of this guide shows the numbers, the failure points and a simple way to decide.
TL;DR
- Fastening is the whole difference. Standing seam uses concealed clips under raised seams. Screw down panels are screwed through the face with gasketed screws.
- Cost: standing seam typically runs $9 to $16+ per square foot installed, and exposed fastener $4 to $9, depending on region, gauge, roof complexity and installer.
- Longevity: standing seam typically lasts 40 to 70+ years. Exposed fastener roofs typically last 25 to 40 years and need screw and washer service every 15 to 20 years.
- Best fit: standing seam for the home you live in. Screw down for outbuildings, or a budget-first home project with a maintenance plan.
- Next step: get at least two written estimates that name the panel type, gauge, underlayment and fastener details.
Table of Contents
- How the two systems are built
- Side-by-side comparison
- Cost: what you pay now and what you pay later
- Leaks and weather resistance
- Thermal movement: why screws back out
- Lifespan and maintenance
- Looks and home value
- The downsides of standing seam
- Are screw down roofs good?
- Noise, decking and what else to ask
- A simple way to decide
- Get a roof quote that compares both options
- FAQ
- Sources
How the two systems are built
Both are metal roofing, usually steel, and both shed water well. They differ in how the panel is held to the roof deck.
Standing seam panels have raised vertical seams where one panel locks to the next. Hidden clips under the seam hold each panel down, so no screw goes through the part of the roof that sees rain. The clips let the panel slide slightly as it heats and cools.
Screw down panels, often corrugated or ribbed, are fastened straight through the flat face of the panel with screws that have rubber or neoprene washers. The research on the two systems describes the same split: concealed clips on one side, visible screws and gaskets on the other.
That single choice drives everything else: price, leak risk, lifespan, looks and upkeep.
Side-by-side comparison
| Factor | Standing seam | Screw down (exposed fastener) |
|---|---|---|
| Fasteners | Concealed clips | Screws through the panel face |
| Installed cost | $9 to $16+ per sq ft | $4 to $9 per sq ft |
| Typical lifespan | 40 to 70+ years | 25 to 40 years |
| Maintenance | Minimal | Screw and washer service every 15 to 20 years |
| Leak risk | Lower | Higher over time as gaskets age |
| Thermal movement | Clips float with the panel | Panel is pinned at every screw |
| Look | Clean, uninterrupted lines | Visible screw heads in rows |
| Installer skill | Specialized | Simpler, more installers can do it |
Cost, lifespan, maintenance and leak figures in the table come from this 2026 comparison. Treat the dollar ranges as ballparks. Your roof's pitch, valleys, dormers and chimneys can move a quote well outside them.
Cost: what you pay now and what you pay later
On a 2,000 square foot roof surface, the published ranges work out like this:
- Screw down at $4 to $9 per square foot: roughly $8,000 to $18,000.
- Standing seam at $9 to $16+ per square foot: roughly $18,000 to $32,000 or more.
That is simple multiplication of the sourced ranges, not a quote. Real jobs depend on the roof's shape and how many cuts, flashings and trim pieces it needs. A simple gable roof lands at the low end of its range. A cut-up roof with several valleys lands at the high end.
The price gap is real, but it is only the first chapter. Screw down roofs need their fasteners looked at over the years, and that service has a cost. Standing seam roofs have few exposed parts to maintain. If you will own the house for decades, the lifespan difference narrows the gap. If you may sell within a few years, our guide on asphalt vs metal roofing for Central Texas sellers walks through that math.
Leaks and weather resistance
Water gets into a roof through holes, and a screw down roof has a hole at every screw. Each one is sealed by a washer. Standing seam systems have a lower leak risk because the fasteners are concealed, while screw down systems rely on exposed gaskets that can degrade, which raises the risk of water getting in over time.
Central Texas is hard on those washers. Long, hot summers bake rubber, and hail and wind-driven rain test every seal. A washer that has cracked or lost its squeeze lets water track down the screw into the deck. You often won't see it until a stain shows on a ceiling.
Standing seam is not leak-proof by default. Its weak points are the seams, the flashings at penetrations and the quality of the install, which is why the installer matters as much as the panel.
Thermal movement: why screws back out
Metal expands in the afternoon sun and shrinks at night. On a standing seam roof, floating clips let each panel move. On a screw down roof the panel is pinned at every fastener. Over time that restriction can elongate the screw holes, which is called wallowing, and a loose screw means a weaker seal.
This is why one professional source points out that on exposed fastener roofs, the fasteners and washers, not the panels, are usually what limits the roof's life. The steel itself can outlast the screws holding it.
Lifespan and maintenance
Expect these ranges from the same 2026 comparison:
- Standing seam: 40 to 70+ years with minimal maintenance.
- Screw down: 25 to 40 years, with a screw and washer service about every 15 to 20 years.
What that service involves: a roofer walks the roof, re-drives or replaces backed-out screws, swaps cracked washers and reseals trouble spots. Put a reminder in your calendar for roughly year 15, and sooner after a major hail or wind event.
Two habits help either roof. Keep valleys and gutters clear of leaves so water doesn't back up under panels. And watch the roof edge, since overflowing gutters send water into fascia and soffits, a problem pest-control specialists link to leaky gutters and termites. If you already see soft or stained fascia, our guide to fascia and soffit repair covers what to fix first.
Looks and home value
Standing seam gives long, clean lines with no rows of screw heads, which is why it is the usual choice on modern and farmhouse-style homes. Screw down has a more utilitarian, rural look. Some owners like that on a ranch house, a barn-style garage or a workshop. Color and finish matter as much as profile, so ask to see samples in daylight.
Panel steel and coating also affect how the roof ages. Two of our guides go deeper: 24 vs 26 gauge steel and Galvalume vs galvanized.
The downsides of standing seam
You asked, so here they are in plain terms:
- Higher upfront price. It is the largest cost difference between the two systems.
- Skilled labor required. Proper installation takes specialized skill to avoid problems such as seam failure or oil canning, the visible waviness that can show in flat panels.
- Structure matters. Standing seam panels make a more watertight roof and allow expansion and contraction, but they lack diaphragm strength, so purlins on open-framed buildings need more bridging and bracing. On a house with solid roof decking this is handled in the design, but it is a good question to put to any installer.
Each of these is managed by choosing an experienced crew and a sound specification. None is a reason to settle for a roof that leaks sooner. For a deeper look at profiles, see our comparison of standing seam vs corrugated for homeowners.
Are screw down roofs good?
Yes, for the right job. They are simple, durable when maintained and far cheaper. Screw down is generally best suited to non-habitable buildings such as barns, sheds and shops where budget drives the decision. It also remains an option for a budget-conscious house if you are ready for the scheduled maintenance.
A screw down roof is a good call when:
- The building is a barn, workshop, carport or storage shed.
- You need the lowest installed cost and will do or pay for periodic fastener service.
- The roof is a simple shape with few penetrations.
Standing seam is the better call when:
- It is your primary home and you want the longest-lasting roof.
- You want fewer maintenance chores and the cleanest look.
- The roof has complex valleys, skylights or chimneys where fewer exposed holes help.
Noise, decking and what else to ask
Metal roofs have a reputation for drumming in rain. Solid decking and the right underlayment make a big difference, which our guide on metal roof noise in rain explains. Whichever panel you choose, ask every bidder:
- Which panel profile, steel gauge and coating are in the quote?
- What underlayment goes under the metal, and is the deck being inspected or repaired?
- For screw down: what screw and washer type, and what is the plan for service at year 15?
- For standing seam: what clip type, and how are flashings handled at chimneys, vents and valleys?
- Is drip edge included? Here is why your roof needs one.
- What does the workmanship warranty cover, and who stands behind it?
A quote that lists only a total and a color is hard to compare. Insist on line items.
A simple way to decide
- Name the building. House you live in: lean standing seam. Outbuilding: screw down is usually the sensible fit.
- Set your horizon. Keeping the home 20+ years favors standing seam. Selling soon changes the math.
- Price both. Ask for the same roof quoted in each system so you can see the real gap for your roof shape.
- Add the maintenance line. For screw down, budget for a service visit around year 15.
- Compare written estimates. Get more than one, and check that the scope matches line by line.
Our perspective
We install roofs in Central Texas, and the question we hear most is whether the premium for standing seam is worth it. For a family home, we think it usually is. Texas sun, hail and wind-driven rain are hardest on the small parts of a roof: washers, screws and sealants. A system that removes those parts from the weather side is designed to remove the most common service call.
That said, we would never push a homeowner into a roof they can't afford. We encourage every customer to collect multiple estimates, and our Best Price Guarantee is there so you can compare with confidence. If a screw down roof fits your budget or your barn, we will say so and specify the screws, washers and service plan properly.
If storm damage is behind your replacement, we also help you work through the insurance claim so the scope of the new roof is documented correctly.
Dan
Get a roof quote that compares both options
If you are replacing a roof in San Antonio or elsewhere in Central Texas, we can inspect it, explain what you have and quote the metal option that fits your home and budget. Estimates are free, and we encourage you to compare them with others.
See our roofing repair and replacement services or ask how insurance claim help works if a storm caused the damage. You can also browse the project gallery to see finished roofs. Our guide to avoiding hidden costs in roof replacement is a good read before you sign anything.
FAQ
What is the difference between standing seam and screw down roofing?
Standing seam panels are held by hidden clips under raised seams, so no screws pierce the weather surface. Screw down panels are fastened through their face with gasketed screws. The result is a higher price and lower maintenance for standing seam, and a lower price with periodic screw and washer service for screw down.
How much more does standing seam cost than screw down?
Published ranges put standing seam at about $9 to $16+ per square foot installed and exposed fastener at about $4 to $9, depending on region, gauge, roof complexity and installer. Ask for both priced on your roof to see your actual difference.
Is an exposed fastener roof okay for a house?
It can work for a budget-focused home if you accept the maintenance, mainly replacing or re-driving screws and washers about every 15 to 20 years. For a primary residence, standing seam is the stronger long-term choice. For a shed, barn or shop, screw down is a common fit.
Do screw down metal roofs leak?
They can, mostly at the screws. The rubber washers age in sun and heat, and thermal movement can loosen fasteners. Regular inspection and timely screw and washer replacement keep leak risk down.
Sources
- Standing Seam vs Exposed Fastener Metal Roof
- Standing Seam vs Corrugated Metal Roof, 2026 Cost Data
- From Screw-down to Standing-seam Metal Roofing
- Why Leaky Gutters Are A Termite Magnet