[TowerTalk] Coax and asphalt shingle roofs

[Grant Saviers]

The sheath insulation matters a lot as standard PVC will get brittle and 
break up in a couple of years.  Check specs for UV resistance.

I had white marine grade RG8 laying on a metal barn roof in CA for about 
6 years and it yellowed a bit but otherwise sweeps fine.

Grant KZ1W


On 7/20/2020 14:09, Gedas wrote:
> 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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