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Rawlbolts - how to make more secure?

Discussion in 'Building' started by Albumen, 19 Mar 2020.

  1. Albumen

    Albumen

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    I've just bought one of these:

    https://www.toolstation.com/sterling-wall-shed-anchor/p64819

    It came with two countersunk M6 rawlbolts. I can't find any longer bolts (they have to be countersunk, I think, because of the way the cover plate works).

    Any ideas how to make it as un-pulloutable as possible please?

    It'll be going into good brickwork. It think they might actually be class B engineering, given how hard they are. And it's not just me that thinks that, every tradesmen that works on my house complains about it.

    I've got an SDS drill, but also a very powerful Hitachi non-SDS that I bought for the one time I did any core drilling (which I'm never ever ever going to do again!).

    Presumably a smooth carefully drilled hole is better than the SDS nuclear way?

    Obviously holes as accurate and straight as possible.

    Clean the hole out very carefully

    Then resin? What sort?

    All suggestions gratefully accepted.

    Thanks.
     
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  3. footprints

    footprints

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    The thing about Rawbolts is the harder you pull the better they grip. Unless your wall is solid you will only get a fix in the outer skin unless you bolt right through the wall and hang your coat on the inside of the fixing.;)
     
  4. Albumen

    Albumen

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    Thanks. It's a solid (9") brick wall. Well, I'm pretty sure it's 9", I can see quite a few headers. I thought about going all the way through, but with this wall that would need a stupid long bolt.

    Actually I see Rawl do an 80mm M6 countersunk, I'll see if I can get a small quantity easily.

    https://www.rawlplug.co.uk/product/r-spl-ii-c-safetyplus-ii-countersunk/
     
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  5. footprints

    footprints

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    80 mm sounds good(y)
     
  6. Albumen

    Albumen

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    thanks. Found somebody that sells them individually

    https://www.orbitalfasteners.co.uk/...afety-plus-2-zinc-plated-rawl-rsplii06080-25c

    Not sure how much stronger those will be than the ones supplied with the anchor, which are 50mm. But maybe a bit. And the bricks are 110mm thick, so 80mm won't go right through.

    Is it worth squirting resin into the hole first, would you say?
     
  7. footprints

    footprints

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    I wouldn't myself I think it will not make that much difference and if you need to replace the device because someone has had a go at it you can get the bolts out.You undo the nut right to the end and give the bolt a clout with a hammer to drive it in and release the taper with a wiggle and a bit of luck you can get it out.
     
  8. Albumen

    Albumen

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    Great advice, thanks for that. No resin then.

    This is for a bike which is completely out of view, it's not a massive security risk. And if somebody nicks it, well, it's not the end of the world. It's been in the same place for two years with no problem.
     
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  9. DIYnot Local

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