Industry Trends7 min

A Guide to Siding Corners

As home builders, it’s critical to find ways to deliver top-tier building solutions for your clients while remaining efficient. This helps you finish current jobs with excellence and move on quickly to tackle your next job. While it’s inevitable that some parts of the siding process require a little more time or attention to detail, LP Building Solutions offers durable, time-saving products such as LP® SmartSide® ExpertFinish® Outside Corners that help improve efficiency while contributing to curb appeal. 

How Do You Install Corners on Wood Siding?

Typically, to create siding corners builders have to measure, cut and fasten together two pieces of trim to meet at the corner of a house. While it can certainly be done, ensuring a clean look by getting exact measurements can be tedious and time-consuming. 

Knowing how to install wood siding corners with trim is important when it’s what you have on hand, but if you’re looking for a time-saving solution pre-assembled siding corners are a great jobsite hack. LP SmartSide ExpertFinish Outside Corners are one-piece pre-assembled siding corners that come prefinished to match LP® SmartSide® ExpertFinish® Trim & Siding products. By eliminating the need to measure and fasten two pieces of trim together, outside corners help you get the job done faster while creating a cleaner look at the corner. 

Here are some quick installation tips to keep in mind:

  • Outside corners can be installed to wood structural panel wall sheathing or directly over wood, wood composite or fiber cement siding
  • Outside corner trim applied adjacent to surfaces such as porches, patios, balconies, walking surfaces or porch columns must have a clearance of at least 1 inch (25 mm) above any horizontal surface
  • Where edges of trim meet siding material, windows, doors or other finished openings, leave a minimum 3/16 inch (5 mm) space to allow for proper sealant/caulking

Why LP SmartSide ExpertFinish Exterior Siding Corners Are Better 

LP SmartSide ExpertFinish Outside Corners are a great solution for tackling exterior siding corners that many building professionals swear by. Brian Mathis, Construction Services Associate at LP, weighed in on his favorite benefits of LP SmartSide ExpertFinish Outside Corners.

Ease of Installing “Since they come pre-assembled and prefinished the corner can be installed in one piece, saving time by not having to measure, cut, paint and install two separate pieces of trim,” said Mathis. 

Finished Look Curb Appeal LP SmartSide ExpertFinish Outside Corners don’t just benefit builders, they are also a favorite of homeowners looking to amplify their curb appeal.

"They help to add the finishing touch that is first to get noticed with its beautiful, deep cedar-grain texture. They can help make your home stand out with a clean, polished look that can last for many years," said Mathis.

Prefinished Siding Corners Save You Time on the Jobsite 

Using LP SmartSide ExpertFinish Outside Corners can help speed up your installation process so that you can tackle more jobs faster without sacrificing quality. When installing pre-assembled exterior siding corners be sure to follow all installation instructions, including fastener, spacing, sealing and finishing guidelines at

Check out other LP SmartSide accessories designed to help you achieve a clean, attractive exterior here.

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