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Old 03-21-2016, 03:35 PM   #1
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Douglas fir for pergola?


Was going to build a 12ftx23ft pergola out of redwood but I can't find any redwood that's longer than 20ft. Only thing available is douglas fir.

Lumbar yard said it'll be ok if I primed and painted the pergola.

Posts will be 10ft apart, got quote for 2x10 beams and rafters, 2x2 for slats and 6x6 for posts.

Is it ok if I built it out of douglas fir? Will beam and rafter hold using 2x10?
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Old 03-21-2016, 09:43 PM   #2
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Re: Douglas fir for pergola?


I'd be making it smaller or find another yard that would be making some calls to see if they could get it cut longer.
Pressure treated lumber just does not like to be painted.
It would take months to even dry out out, even the it should be solid stained not painted for any hope of it holding up.
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Old 03-21-2016, 09:46 PM   #3
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Re: Douglas fir for pergola?


Thanks, after I made this post I called a few other lumbar yard and found one that has a mill and can special order redwood in longer length. it double the cost but it'll be worth it.

I just coulodn't believe how cheap DF is.
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Old 03-21-2016, 09:59 PM   #4
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Re: Douglas fir for pergola?


Consider yourself lucky.
Here in the east coast Redwood is all most never even heard of and would have to come from the West Coast.
Pine is King around here.
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Old 03-21-2016, 10:01 PM   #5
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Re: Douglas fir for pergola?


Quote:
Originally Posted by joecaption View Post
Consider yourself lucky.
Here in the east coast Redwood is all most never even heard of and would have to come from the West Coast.
Pine is King around here.
and I thought DIY is a **beep* for me here.
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Old 03-21-2016, 10:39 PM   #6
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Re: Douglas fir for pergola?


Which way are you running the wood? Our pergola is 20 ft long in the length
and 14 feet deep. We used 2 X 6 redwood (14 feet long)
What design are you planning on and is it next to the house or free
standing?
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Old 03-21-2016, 10:51 PM   #7
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Re: Douglas fir for pergola?


This is my deck to scale but I didn't design that pergola. I took a sketch to test fit it but in a nutshell it will look very similar to this layout.

4 pcs 2x10 23ft beams and rafters is 10 pcs 2x10 12ft and 11 pcs 2x2 23ft for slats. Beams, rafters and slats will run in this same direction as the sketch. I won't be pairing up the rafters but evenly spacing them. Slats will be about 12" apart.

If I had to do it all over, I would build the pergola before the BBQ island and got the furniture. Now I have to work around the BBQ island and make sure my furniture stays.

Do you know what's the longest I can run the 2x10 beams before I need a post?

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Old 03-21-2016, 11:03 PM   #8
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Re: Douglas fir for pergola?


Is this up against your house? I only know the way we built our
pergola many moons ago. We ran the 2x6 from the house to the yard;
the opposite way of your sketch. Is it too late to change your design?
Our 2x6's are spaced 2' apart.
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Old 03-21-2016, 11:11 PM   #9
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Re: Douglas fir for pergola?


Quote:
Originally Posted by Two Knots View Post
Is this up against your house? I only know the way we built our
pergola many moons ago. We ran the 2x6 from the house to the yard;
the opposite way of your sketch. Is it too late to change your design?
Our 2x6's are spaced 2' apart.
ahh sorry it's free standing... behind the seating area and the grill are fences

not too late to change anything, i'm still at a very early stage of planning.

ahh found a photo on the phone of the where the pergola is going to be. Hopefully this would give you an idea of how things should be build... I wasn't sure that I would be doing a pergola when we started the backyard but since we're getting new fence all around with redwood I figure a redwood pergola would fit right in


Last edited by dannieboiz; 03-21-2016 at 11:21 PM.
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Old 03-21-2016, 11:35 PM   #10
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Re: Douglas fir for pergola?


Ah, a pergola would be gorgeous in your lovely backyard.
if you run the 2x6's the other way From the back fence to
the pool, you can do any length you want ( up to 20 feet)

I get you a pic of the way we did our pergola...Our deck and
pergola are redwood
When I originally designed it, it was so long ago, I believe it
wasn't called a pergola.
I get you a pic or two.
stay tuned...
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Old 03-21-2016, 11:48 PM   #11
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Re: Douglas fir for pergola?


Here's ours. if you run it this way, you can get the length
you want.
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Old 03-21-2016, 11:49 PM   #12
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Re: Douglas fir for pergola?


Cool can't wait to see some of more ideas.

I just found this on another forum of someone's build and I think it could also be an option for me. This person also had a 12x24ft pergola with only 4 posts. it's almost the same size as mine

Beams are a single 6x12 x24ft the other beams are 4x8 and they're 12ft. Top slats are 2x4 which should be readily available where I'm at. The only costly pieces are the 6x12x24 which I figure would be a few hundred bucks a piece.

I can just go off his photos and get the exact number of boards I'll need.

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Old 03-21-2016, 11:51 PM   #13
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Re: Douglas fir for pergola?


Quote:
Originally Posted by Two Knots View Post
Here's ours. if you run it this way, you can get the length
you want.
Was this a DIY project? You actually notched your wood? That's some skills...

what's the covering on top?
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Old 03-22-2016, 12:05 AM   #14
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Re: Douglas fir for pergola?


Yes, DIY...The stuff on top is sola veil ...it lets in the light and air
but filters the sun's rays. We put it up each Spring and take it down
late Fall.

Here is the front. The uprights are in cement and bolted to the deck.

Actually, looking at it now, I believe the length is 16' not 14'
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Old 03-22-2016, 12:10 AM   #15
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Re: Douglas fir for pergola?


Here's another overall view from the yard.
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