Roof On Closed Pergola

Cache

HO wants a closed pergola covering the rear french doors and half the concrete patio. Wants it to have a trellis ceiling like this one. Columns will be round fiberglass. Entablature will be taller and more proportionate. The one in this picture is very bottom heavy.

http://www.finehouse.net/Images/Perg...%20Ceiling.htm

Anyway, the HO wants it to also protect against rain and snow. Will settle for a clear permanent cover, but would prefer a ceiling that can be left open and only closed during inclement weather.

Thought about using a Solara adjustable patio cover. Could also just install a permanent clear roof. Any suggestions out there? Or does anyone know of a product that makes this easy?

John Hyatt

Mac do. those lex ann pannels with alum chanells. Im gunna get Him to posts those things again one way or another J.

Cache

Gets really hot here in the summer. Was told that the Lexan clear polycarbonate panels are so transmissive to radiant heat that you end up baking underneath them. Is that the case?

John Hyatt

Come on Mac,just one more time J.

deckman22

Maybe try some smoke colored panels & install some ceiling fans to get some air going on under there.

That's a nice looking pergola on that link, you going to build one similar?

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Deckman
www.alscustomdecks.com

redwood

I've used the lexan thermoclear many times for open air structures, It was fine. We ususally use the bronze tint

It was originally developed as a green house material, so some sort of ventilation is a must, if the sides were being closed in.

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Mark
Los Gatos, CA
www.creative-redwood-designs.com

naptown CR

How about a blue tarp? or green if the HO is a tree hugger, or brown if he is a chemical co exec.

BuiltByMAC

Not a prob at all, man!







It can handle much more severe arcs than that...I had a couple of decent-lookin' 2x8s sittin' around, cut a baby arch in 'em for the display.

Product is still in dev., (connectors, among other things, are being reworked) -
hoping to see it later this year...

Cache, can't think of an easy option for removable roof panels that wouldn't leak like a sieve. I've got a couple of design ideas but can't see how they wouldn't leak in heavy rain.

Mac

John Hyatt

Thanks Mac!! I am about to use Sundance supply for a 20 x20' roof they are your supplier as well right? J.

Cache

Yes, I will be building one somewhat similar to that one. But actually much more similar to this one. Only real difference will be that I want to close in the lattice with something translucent.

Attached Thumbnails

 

Cache

Yeah, the bronze tint is good, but not necessarily the look they are going for. The pergola is on the east side of a two story, so will only be getting hit direct with sun until about 2pm. During the hottest part of the day, it is in the shade. The somewhat dense lattice should also help dissipate some heat.

What thickness do you recommend for live load of 30psf?

neolitic

Your tuscan/doric columns fit
the design much better. IMO

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Cache

I can think of a couple ways to manufacture a mechanical shade of sorts, that works like the Solara patio covers, using the Lexan bronze or grey. Problem is that they would only be good for rain. Ice dams would cause serious problems. Also, the strips would lose much strength and not carry the snow load.

The solara patio covers are so expensive that they aren't really very relaistic. Might just have to do a fixed Lexan grey roof. Not really sure how best to create butt joints that won't leak like crazy.

Cache

Yeah, the tuscan columns are also run throughout the house. There are 10 more. 4 supporting a balcony over the porch and the others creating an entrance to the greatroom from the foyer and kitchen.

The picture above also has the proportions right on the entablature. Column thickness is appropriate for height. Frieze is also sized appropriately.

Still need to decide on material. HO wants it white like in the pic. Such a shame to make it out of Western Red Cedar and paint it white.

deckman22

The knots on western red cedar bleed thru when you paint them white. I did some french style screen doors & painted them white. Took about 8-9 coats to where the knots did not show thru.

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Cache

Thinking about building out of PT and wrapping with either hardi or Azek.

naturalwood

Or you could try thermally modified wood. it works like cedar but does not have the bleed concern.

John Hyatt

Still waiting for the span charts on the stuff dude. If your gunna pitch it dont bitch it J.

naturalwood

Don't have that information. Do know the break point is just over 600 lbs per sq foot. And the engineers have approved it for 24" centres. If that is of any help to you? Don't ask anything more technical than that.

So what do you pay for IPE down there?

John Hyatt

I would need to see that in print to bleive it, just like any other lumber.

How much I pay for material is none of your Damm business. J.