OSB Island Tub Drain Freestanding Bathtub Rough-In

OSB Island Tub Drain Freestanding Bathtub Rough-In

Installing a freestanding bathtub just became easier.

Install a freestanding bathtub with the OSB Island Tub Drain, a low-profile rough-in system designed to simplify installation before the tub is set in place. Featuring a redesigned asymmetrical deck flange and built-in snap-off test cap, this freestanding tub drain rough-in helps make installation easier while providing convenient access for testing before the bathtub is installed.

The asymmetrical deck plate is designed to help prevent interference with a freestanding bathtub faucet rough-in, making the OSB Island Tub Drain a practical choice when working within a limited installation area. The system is installed before the freestanding tub is placed, so access below the fixture is not required after installation.

Available in ABS, PVC, and cast iron configurations, the OSB Island Tub Drain is designed for residential bathroom installations where a freestanding bathtub requires a properly positioned rough-in drain assembly.

Features & Benefits

• Redesigned asymmetrical 18-gauge epoxy-coated metal deck flange helps make installation in tight spaces easier.
• Built-in snap-off test cap allows for water, air, or smoke testing.
• Designed as a freestanding tub rough-in to be installed before the bathtub is installed.
• Access below the fixture is not required after the freestanding bathtub is installed.
• Low-profile design allows installation in an 8-inch joist space or greater.
• Designed for installation in an 8-inch or 10-inch joist space with a 1-1/2-inch or 2-inch P-trap, respectively.
• Can be installed with a waterproofing membrane.
• Asymmetrical deck plate design helps avoid interference with a freestanding faucet rough-in.

Designed for Freestanding Bathtub Installation

The OSB Island Tub Drain is designed specifically for freestanding bathtub rough-in applications. Because the drain assembly is installed before the bathtub is set in place, the installer can complete the required rough-in work without depending on access below the finished fixture.

The low-profile configuration is designed for an 8-inch joist space or greater, while the specified joist-space and P-trap combinations provide installation options for different bathroom plumbing layouts. Always verify the drain configuration, dimensions, and plumbing requirements for the specific installation before beginning work.

Snap-Off Test Cap for Drain Testing

The built-in snap-off test cap provides a convenient way to perform water, air, or smoke testing during installation. This allows the rough-in assembly to be tested before the freestanding bathtub is installed, helping simplify the installation process and reduce the need for access after the fixture is in place.

Asymmetrical Deck Flange for Tight Installation Areas

The redesigned 18-gauge epoxy-coated metal deck flange features an asymmetrical configuration designed to make installation easier in tight spaces. The deck plate is also designed to help prevent interference with a freestanding bathtub faucet rough-in, which can be especially useful when the drain and faucet locations need to work within a limited floor area.

ABS and PVC Configuration Includes

• 1 brass tailpiece flange
• ABS or PVC adapter kit for attaching ITD5135 to ABS or PVC bath waste
• Island drain assembly
• Mortar/tile guard
• Cutting template

Cast Iron Configuration Includes

• 1 brass tailpiece flange
• ABS or PVC adapter kit for attaching ID357 to ABS or PVC bath waste
• Mortar/tile guard
• Island drain assembly
• Cutting template

Installation Considerations

• Install the freestanding tub drain rough-in before installing the bathtub.
• Verify the available joist space and plumbing layout before installation.
• The system is designed for an 8-inch or 10-inch joist space with a 1-1/2-inch or 2-inch P-trap, respectively.
• Confirm the selected drain configuration and adapter requirements before beginning installation.
• The drain assembly can be installed with a waterproofing membrane.
• Use the supplied cutting template and installation documentation as applicable to the selected configuration.

Applications

The OSB Island Tub Drain is designed for freestanding bathtub installations in residential bathrooms and bathroom remodeling projects. Its low-profile design and asymmetrical deck flange make it particularly useful where the drain rough-in and freestanding tub faucet need to fit within a limited floor or joist space.

It is suitable for new bathroom construction, freestanding bathtub replacements, and remodeling projects where the plumbing rough-in must be completed before the bathtub is installed.

Helpful Resources

• OSB Island Tub Drain Installation Video
• Island Tub Installation Guide
• Cast Iron Island Tub Drain Specification Sheet
• ABS & PVC Island Tub Drain Specification Sheet
• OSB Product Bulletin - Asymmetrical ITD

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