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Exterior Arches

 
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Old 10-11-2018, 04:54 PM   #1
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Exterior Arches


After tearing off a bunch of Stucco..so help me that crap trapped moisture for the past 16 years and the entire front of this house is rotted out! Anyway, that's besides the point...

The front of this house had stucco above the arches on the porch, and they want to match a porch we added out back which had some vinyl cedar shakes. I've considered sheets of 3/4" Azek cut into a curve to form the arches and trying to flex a sheet of 3/8" azek to form the bottom of the arch, but am just not sure I'm in love with the thought of it. Anyone have any thoughts on what could form an arch over these and trim it out nice? I hate flexible J because every time I've used it the sun hits it and it looks like absolute crap...the owners are open to all suggestions as well.

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Old 10-11-2018, 07:07 PM   #2
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Re: Exterior Arches


I think you could get 1/2" sheet Azek to make that curve pretty easily. You could make up the casing from some 5/4 with probably 4 segments

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Old 10-11-2018, 08:12 PM   #3
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Re: Exterior Arches


A little heat on the 1/2 would help it form the curve a little easier. Probably could even use 3/4" with some heat and then Cortex screws and plugs to hold it in place.
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Old 10-11-2018, 08:14 PM   #4
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Re: Exterior Arches


How would you heat it? I'm on board with cortex and plugs, but I've not heated azek ever...
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Old 10-11-2018, 08:24 PM   #5
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Re: Exterior Arches


I made this setup years ago to heat PVC for these gable accents. Some metal ducting and our blast heater. Also could use a heat gun and work it slowly into the arch but it might cool to quick. If you do heat it have another guy to help and wear heavy gloves. Once it comes out of the duct it will be like a noodle depending how long you heat it up.
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Old 10-11-2018, 08:27 PM   #6
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Re: Exterior Arches


Would you piece together the 'casing' and then heat a bottom piece to get the arch?

The heat run with a salamander seems simple, how hot did you go or how'd you know it was time to take it out??
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Old 10-11-2018, 08:29 PM   #7
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Re: Exterior Arches


If you keep the keystones you could piece the casing. We sort of guessed when to pull it from the duct. The first one was brown on the end closest to the heater....lol...it was really pliable. It may have been in there 5 minutes. It wasn't long.
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Old 10-11-2018, 08:31 PM   #8
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Re: Exterior Arches


Yeah, they're good with keeping a keystone at the top... just trying to figure out the casing yet and how to get a nice clean cut on them
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Old 10-11-2018, 08:32 PM   #9
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Re: Exterior Arches


you can buy heating blankets also for Azek
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Old 10-11-2018, 08:35 PM   #10
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Re: Exterior Arches


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Yeah, they're good with keeping a keystone at the top... just trying to figure out the casing yet and how to get a nice clean cut on them
Router and a trammel.
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Old 10-11-2018, 09:04 PM   #11
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Re: Exterior Arches


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Old 10-12-2018, 02:36 AM   #12
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Re: Exterior Arches


Real Stucco with a rainscreen and flashing as needed....

A bigger soffit, like 3-4'?

A pro roofer to check out the wonder bond shingles...I'd get a skinny honest person to check the whole attic for damp spots, A good job for a thermal imagining device after a sharp temp drop or increase...

A added gutter drop from the second story window crown?...note wet shingles below end

failed brick sill turned mildew black under left front window.....

No dampproof coursing or flashing or vents in masonry panels or EIFS "system"? No home owners warranty on the EIFS??? Who inspected the home for the original home mortgage approval?

Like the arches per se, but what is the architectural style? colonial confusion? the house of many eyebrows?

Like the Dog statue, maybe the "Limes" can make some Lemonade out of the old sour fruit....
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Old 10-17-2018, 08:09 PM   #13
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Re: Exterior Arches


Well, I got some sheet Azek and used a router with a built-up jig, the piece cut very nice and clean. We tried arching a sheet of 3/8" Azek to form the bottom of the arch but keep cracking it, so we'll have to heat it up since temps have dropped into the 40's here. We fixed the step flashing that caused all the rot, I swear there's too many gables and eyebrows on this place...we're starting to put it all back together, no more stucco as that stuff just amplified the problem...didn't 'cause' the problem as it was a step-flashing error that allowed water in behind the housewrap (housewrap was on before the step-flashing and lapped incorrectly) and window tape? who needs that? Sill pans...nope. housewrap was even lapped incorrectly (they started on the top and lapped the bottom piece over the top piece...) Replaced lots of OSB, studs, and rim boards...

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