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EcoFasten Galvalume 8 x 12 In. Black Roof Flashing - GF1-GAL-BLK-812

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SKU PES-PA-REC-0534

EcoFasten Galvalume 8 x 12 In. Black Roof Flashing - GF1-GAL-BLK-812

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Get yours today!

9+ sold

In the last 7 days

Flat Rate Shipping - Calculated at Checkout

Delivery timeframe shown above at checkout

Lifetime Customer Support

Unlimited lifetime support, always available.

In High Demand! Order Now To Secure Your Items

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What is your return policy?

Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.

What’s covered by your return policy?

Our returns policy covers all purchases made through Portlandia Electric Supply. For warranty issues, as authorized distributors, we honor the full manufacturer warranty of ALL the brands on our website. See our complete returns and warranty policies on our Shipping, Deliver, and Returns page.

How long will it take to receive my order?

All orders are processed within 72 hours and you can expect delivery on most orders within 5-7 business days. You will receive access to our customer portal after ordering, where it is easy to track all your shipments. See our Shipping, Delivery and Returns page for more details.

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Portlandia Electric Supply equipment, we’ve got you covered: we’re always only a phone call or email away.

EcoFasten Galvalume Black Roof Flashing — 8 × 12 In.

8 × 12 In.

Flashing Dimensions

Galvalume

Corrosion-Resistant Steel

220°F Range

-40°F to +180°F Operating Temp

Product Overview

The EcoFasten GF1-GAL-BLK-812 is a premium 8×12-inch black Galvalume roof flashing engineered to provide long-lasting waterproofing and structural protection at roof joints, penetrations, and transitions. Fabricated from corrosion-resistant Galvalume steel with a sleek black finish, it delivers reliable moisture diversion across a wide temperature range of -40°F to +180°F — making it suitable for demanding climates and year-round outdoor exposure. Compatible with both metal and shingle roofing systems and installable via screw or nail-down methods, the GF1-GAL-BLK-812 is an essential roofing solution for professional contractors and DIY installers alike.

Key Features

Galvalume Steel Construction — Corrosion & Rust Resistant: Fabricated from Galvalume steel — an alloy of zinc, aluminum, and silicon-coated steel — the GF1-GAL-BLK-812 offers significantly superior corrosion and rust resistance compared to standard galvanized flashing. This ensures the material retains its structural integrity and waterproofing performance over the full lifetime of the roof, even in coastal, high-humidity, and freeze-thaw environments.

Exceptional Waterproofing & Moisture Diversion: The flashing's precision-profiled form channels water efficiently away from vulnerable roof joints, penetrations, and transitions — preventing pooling, capillary infiltration, and moisture accumulation that can lead to underlayment degradation, structural rot, and interior water damage. Its watertight fit creates a robust first line of defence at every critical interface in the roofing assembly.

Easy Installation — Screw or Nail Down: The 8×12-inch format and dual-method installation compatibility — accepting both screw and nail-down fastening — allows professional roofers and confident DIY installers to work quickly and efficiently without requiring specialized tools or adhesives, reducing labor time and simplifying roof construction and repair workflows.

Sleek Black Finish for Visual Integration: The factory-applied black finish blends cleanly with dark roofing materials including black shingles, metal standing seam panels, and solar racking systems — ensuring that flashing details remain visually unobtrusive and maintain the overall aesthetic of the roof without compromising any of the material's protective performance.

Versatile Compatibility Across Roof Types: Suitable for use on both metal and shingle roofing solutions, the GF1-GAL-BLK-812 adapts to a wide range of residential and light commercial roofing configurations — making it a versatile, go-to component for general roofing, re-roofing, solar panel mounting, and roof penetration sealing projects across diverse building types.

How It Works

The GF1-GAL-BLK-812 is installed at roof joints, penetrations, and transitions where water infiltration risk is highest — such as around pipe boots, skylights, chimneys, dormers, and solar mounting hardware. Once fastened in place via screw or nail, its profiled Galvalume body forms a rigid, watertight barrier that actively redirects precipitation away from the underlying roofing substrate, preventing moisture from reaching the deck, insulation, or interior building structure across its full -40°F to +180°F operating temperature range.

Water Diversion & Flashing Profile: The flashing's engineered profile creates a sloped, overlapping barrier at the point of installation — using gravity to guide rainwater and snowmelt away from the joint and down the roof surface along the intended drainage path, preventing water from tracking back under adjacent roofing materials via capillary action or wind-driven rain.

Sealing at Critical Roof Interfaces: When properly installed with compatible sealant or underlayment tape at the flashing edges, the GF1-GAL-BLK-812 creates a fully sealed interface between roofing materials and adjacent structures or penetrations — eliminating the micro-gaps and movement-induced separations that are the most common entry points for moisture infiltration in aging roofing assemblies.

Multi-Surface Compatibility & Fastening: The 8×12-inch Galvalume body conforms readily to flat, sloped, and irregular roof deck surfaces on both metal and shingle systems — and its dual screw or nail-down fastening method ensures a mechanically secure, wind-uplift-resistant installation that maintains a tight seal through thermal expansion and contraction cycles across all four seasons.

Technical Specifications

Manufacturer	EcoFasten
Part Number	GF1-GAL-BLK-812
Material	Galvalume Steel (Zinc-Aluminum-Silicon Coated)
Color / Finish	Black
Dimensions	8 × 12 inches
Weight	1.5 lbs
Waterproof Rating	Excellent
Temperature Resistance	-40°F to +180°F
Installation Method	Screw or Nail Down
Compatible Roof Types	Metal & Shingle Roofs
Corrosion Resistance	High — Galvalume Superior to Standard Galvanized Steel

Product Highlights

Material: Galvalume Steel — Zinc-aluminum-silicon alloy coating for superior long-term corrosion resistance
Temperature Range: -40°F to +180°F — Rated for all-climate, year-round outdoor installation
Roof Compatibility: Metal & Shingle — Versatile across residential and light commercial roofing systems
Installation: Screw or Nail Down — No specialized tools or adhesives required

● Available | Contact us for lead time and pricing

What is your return policy?

What’s covered by your return policy?

How long will it take to receive my order?

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

EcoFasten Galvalume Black Roof Flashing — 8 × 12 In.

8 × 12 In.

Flashing Dimensions

Galvalume

Corrosion-Resistant Steel

220°F Range

-40°F to +180°F Operating Temp

Product Overview

Key Features

How It Works

Technical Specifications

Manufacturer	EcoFasten
Part Number	GF1-GAL-BLK-812
Material	Galvalume Steel (Zinc-Aluminum-Silicon Coated)
Color / Finish	Black
Dimensions	8 × 12 inches
Weight	1.5 lbs
Waterproof Rating	Excellent
Temperature Resistance	-40°F to +180°F
Installation Method	Screw or Nail Down
Compatible Roof Types	Metal & Shingle Roofs
Corrosion Resistance	High — Galvalume Superior to Standard Galvanized Steel

Product Highlights

● Available | Contact us for lead time and pricing

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Troy P

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This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

Jacob B

Easy Process, Genuine Support

Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Portlandia Electric supply team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Portlandia Electric Supply.

Patrick B

Off Grid Solar Purchase

I wanted to get an offgrid solar system for years but didn’t know where to start. I found Portlandia Electric Supply on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

James Martin

Highly Recommend

I would like to take the time to express the outstanding service that I was provided with by Portlandia Electric Supply. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Portlandia Electric Supply.

Brian H

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As a professional videographer, I needed reliable power on the go.Portlandia Electric Supply Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

Keith S

Best Tech Support

You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

Coll A

Great Experience

My experience with Portlandia Electric Supply has been excellent. Before the sales, they answered all my questions to assure that I got what I needed. After the sales they continued to support me with answers and help. I had a warranty issue with a unit, and it was handled as well as possible. I would recommend them to anyone looking to go solar.