GAF Metalastic Aluminum Straight Metal Flange (SMF) Expansion Joint Cover, 4 in. x 50 ft RollMetalastic Aluminum SMF Expansion Joint Cover Durable aluminum straight metal flange expansion joint cover designed for long, continuous runs to minimize leak prone splices. Supplied in a 4 in. x 50 ft roll, it helps reduce installation time and costs for commercial roofing applications. Key Features: Continuous Lengths: Supplied in long runs to eliminate up to 90% of field splices that can leak Leak Resistant Design: Metalastic system helps prevent

Metalastic Aluminum SMF Expansion Joint Cover

Durable aluminum straight metal flange expansion joint cover designed for long, continuous runs to minimize leak-prone splices. Supplied in a 4 in. x 50 ft roll, it helps reduce installation time and costs for commercial roofing applications.

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Key Features:

• Continuous Lengths: Supplied in long runs to eliminate up to 90% of field splices that can leak
• Leak-Resistant Design: Metalastic system helps prevent water intrusion and reduces call-backs
• Cost Efficient: Can reduce installed costs by up to 8% versus traditional splice-heavy methods
• Durable Construction: Aluminum straight metal flange built for commercial roofing environments
• Convenient Roll Size: 4 in. width x 50 ft length for straightforward handling and installation

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Specifications Table:

Specification	Details
Product Name	Metalastic Aluminum Straight Metal Flange (SMF) Expansion Joint Cover
Brand	GAF
SKU	23418
Manufacturer Number	EJSMF 4A 050
Product Number	GAFSMF4A50
Style	Commercial Flashings
Base Material	Aluminum
Unit of Measure	Roll (RL)
Dimensions	4 in x 50 ft
Item Weight	35 lb
Key Benefit	Continuous lengths reduce field splices by up to 90% and installed costs by up to 8%

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Frequently Asked Questions (FAQ):

Q: What are the dimensions of this roll?
A: This variant is 4 inches wide by 50 feet long.

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Q: What material is the flange made from?
A: The straight metal flange is aluminum.

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Q: How does this product help prevent leaks?
A: It is provided in continuous lengths, reducing the number of field splices—one of the most common leak points in expansion joint covers.

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Q: Can it help reduce installation costs?
A: Yes, the Metalastic design can reduce installed costs by up to 8% compared to systems with numerous splices.

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Q: Is there documentation available?
A: Yes—product brochures and SDS are available via the manufacturer resources linked in the web data.

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Streamlined Protection With Architectural Poise

This expansion joint cover brings a clean, tailored silhouette to the roofline, marrying utility with refinement. I love the continuous-run concept—it feels seamless and intentional, reducing visual noise while elevating performance. Pair it with crisp metal edges and matte membranes to create a disciplined, modern profile. It’s a quiet luxury detail that safeguards your investment while keeping the aesthetic impeccably composed.

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Choose Metalastic SMF to streamline installation, minimize leaks, and elevate your roof’s performance today.