Re: Non Penetrating Roof Mount (for digital TV installation)
- From: "Bill Wright" <insertmybusinessname@xxxxxxx>
- Date: Fri, 19 May 2006 19:24:48 +0100
"-<GB>-Carpy" <carpy@xxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:uAmbg.71930$wl.46344@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
I've landed this job to install an aerial on a set of portacabinPresumably you saw the pics of the lengths we had to go to recently. The
buildings. The Freeview signal is hopeless all the way along the roofs
(rooves?), except at the point where there is a clear gap between the
surrounding high rise buildings and at this point the signal is rock
solid.
The portacabin is just like corrugated thin sheet metal walls, and the
inside is permanent offices so I can't fix to the side in a way that would
be secure and watertight.
The only way I can see to affix the aerial is to use a non penetrating
roof mount held down with a few paving slabs.
These seem to be designed for dishes exclusively though, so i'd probably
have to install it and then clamp my 6ft (1.25dia 14gauge) aluminium mast
to it with two shelley clamps or similar.
The aerial it has to hold is only a TCX10 so not much weight. The roof is
felted all the way so I don't want to compromise that either.
Does this sound like an acceptable way of doing it? I wish there was
something more suitable for this situation but I can't find anything else.
installation with four little guy wires.
Actually your idea of using a groundstand is sound. If it is on a metal roof
I should buy some 3mm rubber sheet (specialist rubber stockists, conveyor
belt people, etc) and make pads under each flag stone. You can if you wish
use contact adhesive on both sides of the rubber (get a big bottle or
aerosol from bus upholstery or even car upholstery firms. Some carpet
fitters use it as well. But get the type that doesn't loose grip at high
temperatures).
Consider sleeving your aerial mast into the groundstand upright. It's neater
and more secure. Prevent rotation with one through bolt at the very bottom
of the smaller diameter tube (so the hole doesn't weaken it near the stress
point.
I have installed many RT aerials on 20ft aluminium scaffold tubes concreted
into the ground, near the portacabin. This is standard in fact for cabins on
new highway projects. You can sleeve a ten ft aerial mast into this if
necessary.
I hope this helps. If you want to discuss it further you know where I can be
found!
Bill
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