Double Locked Hemmed Seam Roof in Austin
When your Austin home has a low-slope or flat roof, standard roofing materials often fall short. At Austin Roofing Company & Water Damage | WDR, we specialize in double locked hemmed seam metal roofing—a premium metal roofing system engineered specifically for low-pitch applications where traditional standing seam or asphalt shingle roofs cannot perform.
We proudly serve homeowners throughout Austin, Lakeway, Bee Cave, Round Rock, and all of Central Texas with expert low-slope metal roof installation.
Call (512) 820-6505 for a free roof inspection and estimate.
Double Locked Hemmed Seam Roof
A double locked hemmed seam roof is a type of metal roofing commonly used throughout the neighborhoods of Austin. A double locked hemmed seam is a great choice for homes that need to take advantage of the strength of a metal roof, but with a fraction of the weight. Due to the way this roof is constructed and installed, it is a great option for lower pitch and flat roof types.
Benefits of Metal Roofing
Metal roofing brings many benefits to your home. Aesthetically pleasing as well as functional, metal roofing gives your home a clean, finished look while offering superior protection. For the modern homeowner, metal roofing is the most eco-friendly and environmentally sustainable type of roofing material available.
Metal roofing is virtually indestructible. The materials are fire and hail resistant, making them ideal for the Austin climate. Metal roofs are energy efficient because they deflect the majority of hot Texas sun away from your home. This reduces your overall energy costs, making a metal roof a budget-friendly choice in the long run.
A metal roof has an incredibly long lifespan with little to no maintenance. When you invest in a metal roof for your home, Austin Roofing Company & Water Damage | WDR will expertly install a quality roof, like a flat seam metal roof, that will last. The average lifespan of a properly installed metal roof is 40 – 70 years meaning this could be the only roof you’ll ever need.
Do You Need a Double Locked Hemmed Seam Roof?
If you’ve ever been worried that the pitch of your roof is too low for a metal roof, then a double locked hemmed seam roof may be the right choice. Double locked hemmed seam roofs are designed for low-pitch or no-pitch roofs. This allows a standing seam style roof to be installed on roofs with as low as 1:12 pitch ratio. With additional materials, this type of roof can be installed on roofs as low as ¼:12.
A double locked hemmed seam roof offers the same advantages as other metal roofs including being watertight, reducing energy costs, and being low maintenance and high value. If you’re looking for the benefits of a metal roof for your low-pitch or flat roof, Austin Roofing Company & Water Damage | WDR (WDR) has everything you need. We are proud to offer double locked hemmed seam roofs to homeowners throughout the Austin area. Call us today and we’ll schedule your free roofing inspection. With WDR Austin, you can trust your roofing project is in expert hands.
REVIEWS
What Is a Double Locked Hemmed Seam Roof?
A double locked hemmed seam roof is a specialized metal roofing system where the panel edges are folded over twice and mechanically seamed together, creating an extremely watertight connection. Unlike standard snap-lock or exposed fastener systems, the double lock creates a permanent seal that can handle water pooling—making it ideal for roofs with minimal slope.
How It Works
The installation process involves:
- Panel preparation: Metal panels (typically copper, zinc, or galvanized steel) are cut and hemmed at the edges
- First fold: Adjacent panel edges are folded together once
- Second fold (double lock): The seam is folded again and mechanically crimped, creating a 180-degree interlocking seal
- Soldering (optional): For flat roofs, seams may be soldered for additional waterproofing
This double-fold technique creates a seam height of approximately 1 inch—lower profile than standard standing seam but with superior water resistance for low-slope applications.
When to Choose Double Locked Hemmed Seam Roofing
Double locked hemmed seam roofing is the right choice when:
- Your roof pitch is below 3:12 – Standard standing seam requires minimum 3:12 slope; double locked hemmed seam works down to 1:12 or even ¼:12 with additional waterproofing
- You have a flat or nearly flat roof – Many modern Austin homes feature flat-roof sections that need specialized metal roofing
- You want the durability of metal – Get 40-70 year lifespan even on challenging roof geometry
- Architectural details require low-profile panels – Dormers, porches, and transitions often have low slopes
- You’re upgrading from a failing flat roof membrane – TPO/EPDM failing? Double locked metal is a permanent solution
Not sure if your roof qualifies? Our team will assess your roof’s pitch and condition during a free inspection and recommend the best metal roofing system for your situation.
Double Locked Hemmed Seam Roof Cost in Austin
Double locked hemmed seam roofing is a premium system, but it’s often the only metal option for low-slope roofs. Here’s what Austin homeowners can expect:
| Material | Cost per Sq Ft (Installed) | Lifespan |
|---|---|---|
| Galvanized Steel | $12.00 – $18.00 | 40-60 years |
| Zinc | $15.00 – $22.00 | 60-80 years |
| Copper | $25.00 – $40.00 | 80-100+ years |
Factors affecting cost include roof complexity, accessibility, existing roof removal, and underlayment requirements. For a precise estimate, call us at (512) 820-6505 or request a free roofing estimate.
Double Locked Hemmed Seam Installation in Central Texas
We install double locked hemmed seam roofing throughout the Austin area:
Austin | Round Rock | Cedar Park | Georgetown | Lakeway | Bee Cave | West Lake Hills | Dripping Springs | Buda
Whether you have a modern flat-roof home in West Lake Hills or a Hill Country property in Lakeway with complex roof transitions, our team has the expertise to install your double locked hemmed seam roof correctly.
FAQs: Double Locked Hemmed Seam Roofing
What is the minimum roof pitch for double locked hemmed seam?
Double locked hemmed seam can be installed on roofs as low as 1:12 pitch. With additional waterproofing measures (soldered seams), it can work on roofs as low as ¼:12—essentially flat.
How does double locked compare to standard standing seam?
Standard standing seam uses a single mechanical seam and requires minimum 3:12 slope. Double locked hemmed seam uses a double-folded seam that’s more watertight, allowing installation on much lower slopes.
Is double locked hemmed seam more expensive than regular metal roofing?
Yes, typically 20-30% more than standard standing seam due to the additional labor and specialized installation. However, for low-slope applications, it’s often the only viable metal option.
What materials are used for double locked hemmed seam roofs?
Common materials include galvanized steel, zinc, and copper. Copper is the most premium option and develops a beautiful patina over time. We’ll help you choose the best material for your budget and aesthetic goals.
How long does installation take?
For most residential applications, installation takes 3-5 days depending on roof size and complexity. The precision required for double locked seams means installation takes longer than standard metal roofing.
