Cable seals

[Jacobssi]

Anyone recommend any seals to use when taking a cable outside through a brick wall?

 

[Taylortwocities]

What sort and size of cable?

SWA
Twin & earth
TV
Loudspeaker
Flex
Other?

 

[electronicsuk]

Erm, silicone sealant? It's only a matter of course, as if the hole is drilled correctly then there should be little/no possibility of water ingress anyway.

 

[TicklyT]

A correctly drilled hole is little bigger than the cable that runs through it, sloping slightly downwards towards the outside.
Care when drilling should limit any damage to the external face of the brickwork.
Careful consideration of the position of the hole in relation to any archictectural features can add to protection from the weather and help conceal the external cable run.

The cable should be formed into a bend, 'drip loop' or 'watershed' that turns downwards as it exits the hole before turning in the direction of the cable run to stop any water running along the outer sheath.

The only exception is if it's a coax for cable TV. Then you will need a lot of sealant. Cable TV installers like to blow the complete face off a brick when they drill a hole at any odd angle, then 'repair' it with masses of clear sealant afterwards

 

[Taylortwocities]

Then they cover with this outside

Untitled

• Taylortwocities
• 18 Sep 2010
• 1

and this inside

Ferrule

• Taylortwocities
• 18 Sep 2010
• 2
• ferrule

the above available in lots of places.

 

[Chri5]

IS there any absolute certain way of never blowing plaster or brick ?

I'm pretty good 95% of the time, but there are odd moments when blows occur.

I always blame the plaster or soft stocks

 

[flameport]

IS there any absolute certain way of never blowing plaster or brick?

Drill through a mortar joint
Drill from the outside, as plaster damage inside is far easier to repair than a ruined brick
Drill most of the way through, and switch off the hammer function for the last bit.

 

[Chri5]

IS there any absolute certain way of never blowing plaster or brick?

Drill through a mortar joint
Drill from the outside, as plaster damage inside is far easier to repair than a ruined brick
Drill most of the way through, and switch off the hammer function for the last bit.

Do, do and do ! Maybe it's the 100+ y.o. housing stock I always seem to be jobbing in.

 

[Monkeh]

Be more gentle?

 

[RMS]

As said, take the drill off hammer when nearly through.

Let the drill do the work at the end and try not to force it through.