Attached Pergola Construction
A very common question asked when people take the survey over at Pergoladiy is: “How do I attached a pergola to my house?”
Attached pergolas use a ledger board secured to the wall of the house in lieu of posts. These typically end up being 2 post pergolas, but that does not have to always be the case. If you have a larger patio you want to cover, then they can easily be expanded to 3 or 4 columns or even more. The only limitation is the roof load and not using beams so long that they would begin to sag over time.
No matter how big or small though, the standard method for attaching the rafters to the ledger board is with joist hangers. If you are like me, the first time you hear someone mention a joist hanger you are thinking “A what now?”
Since this is such a commonly asked question, I imagine I am not the only one. So, here you go, these are joist hangers:
Joist hangers allow you to set the straight cut edges of the rafters into the base – to hang them you could say – as you then screw them into place. This is something to keep in mind about an attached pergola. In addition to reducing the number of posts needed, the roof pieces that will be attached to the ledger board only need to have one fancy end cut.
Attached pergolas tend to be the most in demand right now and they are also the easier and cheaper alternative to a free standing design. Most houses built recently have a concrete patio poured just off of a sliding glass door to the back yard, it is quite common to want to attach a pergola over the concrete to create a shaded seating area.
Since it is so easy to attach two posts to a concrete slab and then you save material money by reducing the number of pieces needed and not needing as many edge cuts, anyone looking to build a very lovely pergola for less than a thousand dollars can easily accomplish this with an attached design.
So what question can we answer for you? In future posts we will try to address the most frequently asked questions from our surveys. Please join the more than 500 people who have signed up for our emails and taken our survey. Hopefully we will answer your most critical question next!