Monoslope Truss Buyer’s Guide

A practical overview from Blackwater Truss Systems

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What Is a Monoslope Truss?

A monoslope truss creates a single-slope roof system that is taller on one side and slopes continuously to the other. Unlike a lean-to, which attaches to the side of an existing building, a monoslope is a standalone structure with overhang on both sides, giving it balance and functionality similar to a gable, but with one continuous slope.

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Applications Best Suited for Monoslope Trusses

• Open-front hay and equipment storage

• Livestock shelters and loafing sheds

• Commodity sheds

• Buildings requiring all drainage to one side

• Modern-style shops or barns where a unique roofline is desired

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Key Features of Monoslope Trusses

• Provides a clean, modern appearance with one-direction slope.

• Overhang on both sides sets it apart from a lean-to, which only ties into an existing wall.

• Useful for controlling water and snow drainage to a single side of the structure.

• Works well for open or partially enclosed designs.

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Standard Pitch and Custom Options

• Blackwater’s standard monoslope trusses are designed at a 1.5/12 pitch.

• All prices listed on our website represent this standard 1.5/12 pitch.

• Any pitch other than 1.5/12 is considered custom, and customers should call us for a quote before ordering.

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Inside Measurements

Monoslope trusses are designed to fit between posts like a gable truss. This means the inside measurement is always slightly less than the nominal truss span:

• A 40' monoslope truss provides an inside measurement of 39'1".

• A 24' monoslope truss provides an inside measurement of 23'1".

In general: To calculate the inside measurement, subtract 5.5 inches from the nominal span of the truss.

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Why Choose a Monoslope Truss

• Directional drainage: Perfect for sites where water and snow must be shed to one side only.

• Balanced design: Overhangs on both sides provide better coverage and protection than a lean-to.

• Modern look: Offers a sleek, practical roofline for barns, shops, and shelters.

• Engineered strength: Designed and fabricated to meet your span, load, and code requirements.

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Blackwater Truss Systems builds monoslope trusses to the same high standards as our gable and lean-to systems, providing durability, reliability, and performance for your building project.