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from Boise, ID
14x18 Pergolas
We offer several different 14x18 pergola kits, including both free-standing and house-attached kits, with some kits made for smaller 4x4 wood frames and others for larger 6x6s. Use the filtering options below to quickly find the perfect 4-block pergola kit for your outdoor space.
SIMILAR SIZES: 12x18 pergolas*^ | 14x20 pergolas | 16x18 pergolas* | 18x14 pergolas
* kits with shade canopies available | ^ 2-block kits (rather than 4-block kits)
* kits with shade canopies available | ^ 2-block kits (rather than 4-block kits)
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14' x 18' Pergola Attached to House with Roof (5 Options) - Kit for 6x6 Wood
20% OffOriginal price Starting at $1,879Original price Starting at $1,879Original price $1,879Starting at $1,499Starting at$1,879$1,499Current price $1,499Original price $1,879 -
Free-Standing 14' x 18' Pergola with Roof (5 Options) - Kit for 6x6 Wood
20% OffOriginal price Starting at $2,499Original price Starting at $2,499Original price $2,499Starting at $1,999Starting at$2,499$1,999Current price $1,999Original price $2,499
14x18 Refers to the Combined Inner Dimensions of the 4 Roof Openings
When we say a pergola's dimensions are 14x18, we are referring to the combined inside dimensions of the 4 roof openings (from inside-edge to inside-edge). All of the kits featured on this page are meant to have 4 roof openings, arranged in a 2x2 grid, which combine to be a total of 14' wide and a total of 18' deep.
The overall outside-edge to outside-edge dimensions of the pergola will be:
- 15' 2.6" wide x 19' 2.6" deep (if you choose a kit for 4x4 posts) OR
- 15' 10.6" wide x 19' 10.6" deep (if you choose a kit for 6x6 posts)
With all of this being said, you can easily change the overall size of your pergola by trimming the wood posts that you plan to use for the roof beams. For example, if you wanted the true outside-edge to outside-edge dimensions of a free-standing pergola to be exactly 14' x 18', you would need to:
- Purchase three sets of two posts totaling 14 feet to be the beams running the 14-foot width, and then cut off a total of 14.6 inches (for 4x4 wood posts) or 22.6 inches (for 6x6 wood posts) per set of two posts; and
- Purchase three sets of two posts totaling 18 feet to be the beams running the 18-foot depth, and then cut off a total of 14.6 inches (for 4x4 wood posts) or 22.6 inches (for 6x6 wood posts) per set of two posts
Reminder: Width & Depth Are Not Always Interchangeable
14' x 18' pergolas are different from 18' x 14' pergolas. The wall-mounted pergolas on this page will attach to your home on the 14' width side and come 18' out from the house wall. For free-standing pergolas with a slatted roof, the roof rafters will be mounted to the 18' beams and run the 14-foot width of the pergola (providing more shade when the afternoon/evening sunlight comes from the 14-foot width side). If your afternoon/evening sunlight will come from the 18-foot side, you'll want an 18x14 pergola instead.