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Exterior Inspections Contains discussions about the exterior portion of a home inspection. This includes roofs, gutters, downspouts, decks, patios, windows, etc.

 
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  #1  
Old 10/27/09, 1:49 AM
Bob Elliott's Avatar
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Default Compressor lines through shingles

Is this OK
Seems to have the rubber boot underneath but with all that material it is hard to judge.

Any opinions on proper method?

Other than excessive use of patching is there any other comment fitting?

Sloped asphalt tile.

compressor-lines-through-shingles-ac-line.jpg
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  #2  
Old 10/27/09, 6:27 AM
ldapkus ldapkus is offline
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Default Re: Compressor lines through shingles

Polish Installation
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  #3  
Old 10/27/09, 7:16 AM
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Default Re: Compressor lines through shingles

I would just put Ac lines routed in a way that regular monitoring will be needed to prevent water intrusion.
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  #4  
Old 10/27/09, 8:19 AM
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Default Re: Compressor lines through shingles

Bob, this is an installation that will require constant monitoring for possible leakage in the future.

NRCA does not recommend using a roof as a location for heating, ventilating and air-conditioning (HVAC) equipment.
Weatherproofing-related problems may be encountered because of the design of an HVAC unit. There is often a lack of clearly defined responsibility for the weatherproofing
of HVAC units among the parties involved, such as contractors, material suppliers and manufacturers. In an effort to minimize rooftop penetrations, run conduits and pipes within the interior of rooftop curbs.


Many weatherproofing problems related to HVAC equipment may be attributed to one or of the following:

Improper flashing of the penetration(s), such as pipes, conduits and drain lines, that extend through the roof to
service the HVAC equipment.

Penetrations.

Roof drains, pitch pockets often have particular installation or attachment requirements, which follow:

• Prefabricated flashing, metal sleeves and curbs with premolded pipe flashings are preferred for sealing pipes.
Pitch pockets or pitch pans are acceptable as a last alternative. Pourable sealer is the recommended top fill material for pitch pockets. Modified bitumen roofing cement may be acceptable as a top fill material for pitch pockets.

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  #5  
Old 10/27/09, 8:33 AM
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Default Re: Compressor lines through shingles

Quote:
Originally Posted by mcyr View Post
Bob, this is an installation that will require constant monitoring for possible leakage in the future.

NRCA does not recommend using a roof as a location for heating, ventilating and air-conditioning (HVAC) equipment.
Weatherproofing-related problems may be encountered because of the design of an HVAC unit. There is often a lack of clearly defined responsibility for the weatherproofing
of HVAC units among the parties involved, such as contractors, material suppliers and manufacturers. In an effort to minimize rooftop penetrations, run conduits and pipes within the interior of rooftop curbs.


Many weatherproofing problems related to HVAC equipment may be attributed to one or of the following:

Improper flashing of the penetration(s), such as pipes, conduits and drain lines, that extend through the roof to
service the HVAC equipment.

Penetrations.

Roof drains, pitch pockets often have particular installation or attachment requirements, which follow:

• Prefabricated flashing, metal sleeves and curbs with premolded pipe flashings are preferred for sealing pipes.
Pitch pockets or pitch pans are acceptable as a last alternative. Pourable sealer is the recommended top fill material for pitch pockets. Modified bitumen roofing cement may be acceptable as a top fill material for pitch pockets.

Thanks Marcel but if you look close it seems to be a rubber boot rather than a typical pitch pocket.

In this case the unit is a commercial style Gas Furnace and A/C combination unit made for the roof.

Perhaps this should have been sheet metal under that goop.?

I am going to use that last paragraph.(thank you)

Last edited by belliott; 10/27/09 at 9:53 AM..
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  #6  
Old 10/27/09, 8:41 AM
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Default Re: Compressor lines through shingles

Quote:
Originally Posted by wwilson3 View Post
I would just put Ac lines routed in a way that regular monitoring will be needed to prevent water intrusion.
Thanks
But I need a little more detail on what creates that statement.
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  #7  
Old 10/27/09, 8:42 AM
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Default Re: Compressor lines through shingles

Quote:
Originally Posted by ldapkus View Post
Polish Installation
There we go.
Is that the tech term?
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  #8  
Old 10/27/09, 12:10 PM
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Default Re: Compressor lines through shingles

I don't like that "lick and stick" glued on counter flashing thing either.

There is a way to put lines through the roof and that isn't one of them.



"Insanity: doing the same thing over and over again and expecting a different results." Albert Einstein

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  #9  
Old 10/27/09, 8:39 PM
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Default Re: Compressor lines through shingles

Quote:
Originally Posted by dandersen View Post
I don't like that "lick and stick" glued on counter flashing thing either.

There is a way to put lines through the roof and that isn't one of them.
Do you or anyone else have an example of the right way to do this?

Photo would be great.
Text will do.
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  #10  
Old 10/27/09, 9:31 PM
ldapkus ldapkus is offline
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Default Re: Compressor lines through shingles

Quote:
Originally Posted by belliott View Post
There we go.
Is that the tech term?
How about "gowno" (at bottom of list)
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  #11  
Old 10/27/09, 9:35 PM
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Default Re: Compressor lines through shingles

Quote:
Originally Posted by ldapkus View Post
How about "gowno" (at bottom of list)

Nie rozumiem

Wyjdziesz za mnie?
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  #12  
Old 10/28/09, 7:05 AM
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Default Re: Compressor lines through shingles

Here Bob, took me a while to find it.
This flashing boot will accommadate multiple lines.




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  #13  
Old 10/28/09, 3:28 PM
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Default Re: Compressor lines through shingles

Sorry for the delay, been busy...



"Insanity: doing the same thing over and over again and expecting a different results." Albert Einstein

David A. Andersen & Associates
Clarksville - Nashville Home Inspector Lic#40
http://www.midtninspections.com
ITC Level III Thermographer Cert#1958
Building Science Thermographer Cert#33784
http://www.thermalimagingscan.com
HVAC Certification EPA Cert#2046620
BPI# 5015804
Link to my Website at: http://www.midtninspections.com/link-submission

Last edited by dandersen; 12/9/09 at 12:23 PM..
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  #14  
Old 10/28/09, 3:37 PM
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Default Re: Compressor lines through shingles

Thanks to both of you.
Sent in the report , but at 53 pages it was big enough,lol.

I should have researched my own pictures duh, as I see those double boots all the time.

This was a town house and the wall in back was a fire wall that had limestone coping with weep wicks ,but no moisture barrier and at 2 years old rusting lintels above a few areas where they forgot the same.
Nothing like lovely rust stains to accent that white limestone,haha.

I will save the graphics to my Spartan clipboard.
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