[TowerTalk] Coax and asphalt shingle roofs

[Bob Turner]

My coax and rotor cable has been laying on my roof since 1992.  I swapped it out and the roof tower about 2000 for a roof replacement.  I also have 2" copper flashing coming down from roof tower also laying on roof.  There may be some staining from the copper, otherwise no problems.  I did have to lag the flashing to the roof to minimize wind noise.  That roof penetration and others were mucked with roofing cement.  Location is SNJ / FM29, near PHL.

7 3  Bob
N2SCJ

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of Gedas
Sent: Monday, July 20, 2020 5:10 PM
To: towertalk at contesting.com
Subject: Re: [TowerTalk] Coax and asphalt shingle roofs

I do not have any experience with coax directly on my roof but I would still be concerned about possible side effects of extreme temperatures.

Let's say you live some place where the air temp can reach 110F.....given that and a pure sunny day and "darkish colored shingles" 
and I suspect the surface temperatures on that roof can hit every bit of 150F (or more).....I just don't know if I would like that.

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com
Light travels faster than sound....
This is why some people appear bright until you hear them speak.

On 7/20/2020 1:51 PM, john at kk9a.com wrote:
> I have never seen an issue with coax laying directly on a shingle roof.
>
> John KK9A
>
> Bill Ogden W2WO wrote:
>
> This is my month for questions. I am looking at placing a receiving 
> loop (and a rotator) on my roof. The roof has architectural asphalt shingles.
> What is a reasonable way to get coax and a rotator control cable to 
> the loop?  In my case, I cannot access the roof point from inside the house.
> How should I protect the cables from the rough shingles? And protect 
> the shingles from being rubbed by the cables? If the answer is 
> conduit, should it simply lay on the shingles or be raised somehow?
>
> Bill
> W2WO
>
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