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STEELBUILDING.COM is your first and only online supplier of pre-engineered steel buildings

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Steel Building Roof Extensions

Because they can improve both the appearance and performance of a building for relatively little expense, roof extensions are among the most popular extra features. STEELBUILDING.COM offers two types:

purlin extensions for endwalls;
canopies for sidewalls.

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In both cases, we supply all the framing, sheeting, soffit, and trim for a fully-enclosed system with no exposed red-iron and no access for birds or other pests. Using our online system, you can design and price steel buildings with overhangs up to 6' on any or all of the walls. Simply click the Building Accessories tab at the top of the pricing page and then select Purlin & Canopy Roof Extensions (more information below).

This 90'x100' church recreation center has a 6' extension on the left endwall and 3' overhangs the rest of the way around

Benefits

Roof overhangs can add to the value and usefulness of a building in several ways:

Appearance
Extending the roof breaks up the "boxy" look of rectangular buildings. Canopies and extensions also help a pre-engineered building blend in better with neighboring structures in residential or upscale commercial areas. Although many people want to extend the roof all the way around, others achieve the desired effect with just a single canopy over the front of the building.
Shade and Shelter
When located over a doorway, even a one-foot overhang offers you some shelter from the rain and shade from the hot summer sun when you are working near the entrance or just unlocking the door to go in. This kind of protection is doubly important when you expect clients and customers to visit your commercial building.
Runoff
For buildings with no gutters, overhangs help control runoff by preventing rain and melting ice and snow from splashing against the walls and directly in front of the doorways.

Configuring Overhangs Online

Screenshot of online overhang configuration

STEELBUILDING.COM's online design and pricing system allows you to add overhangs in one-foot increments out to 6' (you can also choose 1' 6"). On a sidewall, you can add canopies over all or part of the wall by choosing the bay where you want the canopy to start and the bay where you want it to end. Endwalls are even simpler to configure because the overhang always runs along the whole wall, so you only have to decide how far it should extend out. In the example above, a user has added a 3' extension over the left endwall and a 3' canopy on the front sidewall that starts at bay 1 and ends at bay 2. The illustration indicates that he is adding a canopy to the back sidewall that matches the one on the front.

Example of roof pitch, extensions, and soffit