A protective casing or tube installed around pipes passing through walls, floors, or other structural elements to provide protection and allow movement.

A pipe sleeve is a protective casing or tube installed around pipes passing through walls, floors, roofs, or other structural elements to provide protection from damage, allow for thermal expansion and movement, and maintain the integrity of fire-rated assemblies or waterproof barriers. These cylindrical enclosures are typically larger in diameter than the pipe they protect, creating an annular space that can accommodate pipe movement while preventing direct contact between the pipe and the surrounding structure. Pipe sleeves are essential components in construction that facilitate proper pipe installation while maintaining building performance, fire safety, and structural integrity across various applications in residential, commercial, and industrial buildings.

Pipe sleeves are used in various construction applications including penetrations through fire-rated walls and floor assemblies where they help maintain fire resistance ratings when properly sealed, waterproof membrane penetrations in foundations, roofs, and below-grade structures where they prevent water infiltration, structural penetrations through concrete walls, slabs, and beams where they protect pipes from structural movement and settlement, expansion joint locations where they allow for building movement without damaging piping systems, and underground installations where they protect pipes from soil pressure and provide access for maintenance. Each application requires specific sleeve materials and installation methods based on the environmental conditions and performance requirements.

The types and materials of pipe sleeves include steel sleeves made from carbon steel or stainless steel that provide durability and fire resistance for structural and fire-rated applications, PVC and plastic sleeves used for non-fire-rated applications and corrosive environments, cast iron sleeves traditionally used in masonry and concrete construction for their durability and ease of installation, flexible sleeves made from rubber or synthetic materials that accommodate significant movement and vibration, and specialty sleeves such as those designed for specific applications like pool penetrations, roof penetrations, or high-temperature services. Material selection depends on the application requirements, environmental conditions, and compatibility with the pipe and surrounding materials.

Fun Fact: The first pipe sleeves were simple clay or cast iron tubes used in ancient Roman aqueduct systems to protect pipes passing through walls, establishing a principle of pipe protection that continues in modern construction today.

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