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PermaPost® - Load Bearing Exterior Columns

For a warm and inviting decorative look for your front porch, choose from the Colonial, Chamfered, or Square PermaPost®. These synthetic porch posts offer an insect and weatherproof alternative to a traditional wood porch posts. HB&G PermaPost® products are also low maintenance and load bearing. PermaPost® options are composed of an outer shell that surrounds a galvanized steel pipe and polyurethane foam filler.  The Colonial and Chamfered PermaPost® is pre-finished white and is not meant to be painted in the field due to its polyethylene material. The Square PermaPost® is made from low maintenance PVC porch column and is prefinished in a white capstock. All of the PermaPost® options come with a 25-year Limited Warranty. 

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PermaPost exterior columns for homes


Colonial PermaPost columns Colonial PermaPost columns PermaPost square exterior columns


Colonial PermaPost® Sizes

Porch Post Size Lengths
5" 8, 9'
6" High Density 8, 9'


Colonial PermaPosts are shipped with 2 fasteners per post. 


PermaPost exterior column brackets


The Square PermaPost® is available in a 5" width and lengths of 8, 9, and 10'.


PermaPost column fastening kit


The Chamfered PermaPost® is available in a 6" width and a length of 8'


PermaPost exterior columns dimensions


An optional PermaPost® fastening kit is also available and is sold separately. Each kit comes with skirt, brackets, and screws for wood or concrete substrates. 


PermaPost column fastening kit


Dimensions of the PermaPost® collection are nominal and may vary slightly. 5" Colonial Posts are net 4". 6" Colonial Posts are net 5". Chamfered posts are net 5.5". The Square Post is net 4.25".

Load-Bearing Exterior Columns are Built for the Long Haul

When it comes to exterior porch columns, there are distinct differences between load-bearing exterior columns and decorative columns. As its name suggests, decorative columns are installed for aesthetic purposes; they offer no structural or foundational support. Because of this fact, they are often constructed from cheaper materials that wear out quicker.

Load-bearing exterior porch columns—such as PermaCast round and square columns—are dual-function. They too are aesthetically pleasing and provide a warm welcome to your home. Moreover, they are also a critical keystone that displaces weight from your roof down to your house’s foundation. With that in mind, it’s evident how integral load-bearing exterior columns are to the structural sanctity of your home. We recognize and embrace that fact. It’s why we’re proud to provide you with PermaCast® load-bearing square porch columns and round porch columns that all offer charming designs and decades of uncompromising support. And with their included limited 25-year warranty, we believe this is a promise that’s built for the long haul.

How do you know if a decorative column is load-bearing?

Whether you’re looking at your next home’s porch or contemplating a porch remodel/redesign for your current home, it’s critically important that you deeply examine all exterior porch columns. As mentioned above, there are critical differences between strictly decorative columns and exterior structural columns that are load-bearing. With structural integrity and your personal safety on the line, there is no margin of error. That’s why our professional porch experts have created this quick reference guide to find out if your exterior porch columns are load-bearing.

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