Set about installing a new external light at the rear of the house today. No problem until I get to the outside of the house, and I try and clip the cable to the wall.
I have tried and tried to get the clips to go in, but I reckon the mortar is more like reinforced concrete, the clips will only go halfway in before bending over. The clips I am using are from TLC-Direct,
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in the past I have had no problems getting them into walls etc, but we have just moved house, and therefore into unknown territory.
There's a knack to it, but if you haven't got the knack then you can cheat by using plugs made for clips or by using smallish screws or nails and yellow or red plugs instead.
A tip someone once gave me was to nail them directly below a vertical course of mortar (rather than directly under a brick if you understand my meaning) - on the basis that the mortar has not been subject to weight as it set.
No chance that you are nailing into a steel lintel under the screed, I suppose? That would do this every time. There must be some sort of material change for this to happen at a consistent depth - I'd do an investigatory drill to find out.
Yes. I find a heavy hammer - a club one - used in this way the most likely to succeed. Although it still requires a deal of skill if the material is hard. Using the special wallplugs makes life easy - if it's easy to drill at the location. But they're not that readily available - TLC etc don't seem to stock them anymore. I've often meant to look for a cable tie with screw fixing at a reasonable cost - this could have many such uses.
Took a stroll around B&Q today, and in the electrical section along with the cable clips, they had the tower pin plugs. Job done. In answer to the above, there was nothing behind, just rock hard cement I guess, but drill went in ok.
Yep. A far neater and quicker solution if you can't get clips in is to use some mini-trunking and drill, plug, screw every 18" or so.
When I was installing electronic time systems the flat-packed stuff which came rolled up in a box was used everywhere. R-S used to do it.
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example. All seems to be self adhesive but you can just screw to the wall.
Just pull as much as you need out the box, cut to length (channel + lid rolled up as one) fold up, fix and clip the lid on.
The open ends of the trunk can be closed over by cutting the lid longer than the trunk, removing the "track" with a stanley knife and folding it over before clipping.
Both internal and external angles can be made in the same way so corners can also be made neatly.
Plus it keeps the elements off the cable (not that that's really a problem)
Just another idea as I have experienced walls many times where the brick is too hard and the mortar either too brittle or too soft for normal clips.
Found them in my local B&Q - thanks. But no indication of drill size needed on the box or plugs. They are just under 5mm in diameter but I'd guess need an interference fit. I was also surprised to find a 4mm SDS drill on sale - didn't think they did them that small. Perhaps it would be ideal?
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