Featured pic of DIY Pergola Kit, How Do You Build a Pergola Plans Attached to House

How do You Build a Pergola Plans Attached to House?

Need to know how to build a pergola plans attached to house? Want to build a DIY pergola kit? This simple design can be expanded or shrunk as necessary to fit the space you have over your patio or deck.

Pic of DIY Pergola Kit (Pergola Plans Attached to House)

How Do You Build a Pergola Plans Attached to House (DIY Pergola Kit)

Introduction for DIY Pergola Kit

“How to Build a Pergola Plans Attached to House

Pergolas provide shade and a place to hang potted plants over patios and decks. If you choose to attach your pergola to the house, it must be anchored to the house framing and not the trim, siding or fascia boards. Since attaching a pergola to the house framing is a structural change, you’ll need a building permit in most cases.

Before you start building or buy any materials to build a pergola plans attached to house, check with your local building department for local code, permits and inspection information. This is how to build a pergola plans attached to house.

Sizing Your DIY Pergola Kit

A DIY pergola kit or arbor only has to support its own weight and the weight of whatever you hang from it. This allows you to extend beam and rafter spans. On a larger pergola, however, you don’t want the lumber to appear unsubstantial, so it is important to increase the size of the members appropriately.

Move up to 6-by-6 posts and 2-by-8 beams and rafters to keep the pergola looking sturdy. Add intermediate posts and additional beams anytime a beam or rafter span is longer than 12 feet to prevent sagging in the future.

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Ledger Board

  • The ledger board attaches to the house framing and supports the pergola rafters. You can attach the ledger to the roof rafters but it is better to attach it to the wall framing.
  • Cut the ledger board from 2-by-6 or 2-by-8 lumber.
  • If you’re using anything but pressure treated lumber, seal the ledger board with a quality wood sealer before you start construction.
  • Insert a piece of Z flashing behind the siding above the ledger location and attach the ledger to the wall studs with two, 1/2-inch galvanized lag bolts through the ledger into each stud.

Posts

  • Layout the posts for your DIY pergola kit.
  • The posts support a double beam which supports the rafters.
  • Hang the plumb bob from the end of the ledger so the point is just barely above the patio surface.
  • When it stops swinging, mark the patio under the point.
  • Measure straight out from the mark to the patio edge and mark again.
Image of DIY Pergola Kit Post Layout (pergola plans attached to house)

DIY Pergola Kit Post Layout (pergola plans attached to house)

  • Snap chalk lines between the marks at the house and the patio edge.
  • Measure back towards the house 8 to 12 inches from the patio edge along the chalk lines and mark.
  • Snap a new chalk line between these marks.
  • Place the posts on this line equidistant from the lines perpendicular to the house.
  • Ensure a square layout by measuring diagonally to the plumb bob marks from the intersecting chalk lines. Both measurements should be the same.
  • Drill holes into the patio at the post marks with a hammer drill and place lag bolt sleeves into the holes.
  • Attach adjustable post brackets to the patio with 1/2-inch lag bolts screwed into the sleeves.
  • Stand a post in each bracket and temporarily brace them with two pieces of 1-by-4 lumber.
  • Plumb the post with a post level and nail it to the bracket with galvanized 1 1/2-inch bracket nails.

Beams

  • Attach a mason line to the bottom edge of the ledger at the middle and pull it out to the posts.
  • Attach a line level to the mason line and find the level point on each post and mark it.
Pic of DIY Pergola Kit Posts and Beams (pergola plans attached to house)

DIY Pergola Kit Posts and Beams (pergola plans attached to house)

  • The double beam should extend beyond the posts.
  • Cut decorative ends on the two pieces and hold them on the posts parallel to the house with the top edges even with the level lines from the ledger.
  • Attach the double beam to the posts with two 1/2-by-7-inch carriage bolts at each end.

Rafters

  • Space the rafters evenly and no more than 16 inches apart.
  • Cut the outside end to match the decorative ends of the double beam.
Pic of DIY Pergola Kit Ledger and Rafters (pergola plans attached to house)

DIY Pergola Kit Ledger and Rafters (pergola plans attached to house)

  • Attach the rafters to the ledger board with galvanized joist hangers, screws and bracket nails.
  • Use galvanized hurricane ties to attach the rafters to the beam.
  • You can add additional pieces of narrowly spaced 2-by-2, 1-by-3 or lattice across the top of the rafters for additional shade.

That’s how to build a pergola plans attached to house.

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