Big Kahuna 15×18 Pergola Kit Features

The Big Kahuna 15×18 pergola kit comes standard with:

  • Double 2×8 Beams
  • 2×8 Mortised (Notched) Rafters
  • 6×6 Mortised Posts
  • 2×6 Decorative Angle Braces
  • 2×2 Top Slats
  • Stainless Steel Hardware
  • Optional Galvanized Post Mounting Hardware

Select your options below to customize your pergola kit: Wood Type, Freestanding or Attached, Post Length and Post Mounting Method, End Shape, and Post Base Trim.

Big Kahuna 15×18 Pergola Kit

$8,680.00 Free Shipping

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Wood Type * 

Freestanding or Attached * 

Will your new pergola be freestanding or attached to a wall?

Posts * 

Choose post length and mounting method that matches your choice of freestanding or attached. More Info

End Shape * 

Select your end shape:
Pergola End Shapes

Add Post Base Trim * 

Decorative trim 1” thick by 8” high to cover up the post mounting hardware. More info



15×18 Pergola Kits

Create a special area to spend quality time with family and friends outdoors. This 15×18 pergola kit adds beauty to your landscape that becomes the focus of your outdoor design. Our pergolas are easy to assemble and can give you a sense of pride in knowing that you created your very own patio cover that will last for many years. Enjoy your outdoor space more with a solid wood pergola.

Since we’ve been in the business of building quality pergola kits since 2008, we’ve perfected this design to make it a strong and sturdy 15×18 pergola kit that will stand the test of time for years to come. Big Kahuna pergola kits offer beefy 6X6 posts, double 2X8 beams, 2X8 rafters, 2X6 angle braces, and 2X2 top slats. On each Big Kahuna Pergola, we notch each post to a depth of 1-1/2 inches on each side in order to make a more secure connection between the beam and post. We also notch the rafters over the beams to take away the lateral motion usually found with un-notched cheaper pergolas from big box stores. This equates to a 15×18 pergola kit that is aesthetically pleasing and will hold up any type of weather.