Bolting a TV aerial bracket to a chimney stack.
We carried out some work this week to repair someone elses shoddy TV aerial installation, this follows from our previous blog post on cheap aerial TV installations, being very expensive in the longer run.
The installation of TV aerials to chimney stacks is very clearly a common task and there is a safe and secure solution to every size and shape of chimney and TV aerial.
The photo attached shows a method of attaching the TV aerial bracket to a chimney that is neither safe nor secure.
TV aerials at height and using poles will of course sway, this movement and resonance needs to end somewhere, small bolts and wrawl plugs into loose mortar and soft bricks is not going to last long. Even the action of using a hammer drill on a chimney is going to cause damage to the very bricks and bonds you wish to attached a reasonably heavy metal object to.
The correct method of mounting a television aerial to a chimney is with a chimney bracket and lashing kit, the metal wire and corner brackets spread the load around the whole chimney structure.
This video shows a nice neat and tidy DIY aerial installation, note the very important corner brackets so that the TV aerial lashing wire does not “eat into” the brickwork.
IF there is no other option to drill and fit a TV aerial to a chimney then the following may well mitigate the risks.
- Spread the load over a wide area.
- Never drill into a single skin chimney.
- Do not use hammer action when drilling the stack
- Use a TV aerial with low “wind loading” a log periodic UHF aerial would be perfect.
- Bolt low down on the chimney.
- Use the shortest aerial mast as possible.
If you have a damaged and loose TV aerial on your chimney deal with it straight away, once hardware is loose more costly damage is occurring daily.
Be safe on roofs and contact us at Bushey Aerials or a local TV aerial installation professional if you are not 100% confident.