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Agroshield
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The self tapping concrete screws are quite sensitive to drill diameter, so if the bricks are at all hard, use a new, good quality bit (I like the ones with a cross, four edges at the end) and try to bring the dust out as you are drilling.
Current idea is to set the timber cladding back slightly. There will need to be a profile / drip tray over the brickwork.
A little bit like this
detail-library.co.uk
A little bit like this
DL78 - Timber Cladding to Ground Transition Detail Recessed Cladding
Timber Cladding to Ground Transition Detail - download the 2d and 3d details from the detail library today!
detail-library.co.uk
Cobbler
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That’s the ones, go through the timber & into the wall in one go, it was a good while ago, but from what I remember you tap them in with a hammer & screw the last bit. Did a really good job.
I thought they'd be fine - they are frame fixings after all - but it appears there is some concern about how well (or reliably) they could hold when screwing into a brick wall. So the suggestion was to use these instead
Masonry Torx Frame Fixing Screw
Suitable for all common building and frame materials without the need for additional plugs. Use 6mm drill bit and a T30 Torx driver bit (code 46139).
www.toolstation.com
Good point - I'll use a new drill bit. I had a quick look for ones with four edges (not heard of them before) and it seems like they only come in longer sizes. I'll use a new regular one instead.
james butler
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you could chemfix a threaded bar into the wall and then recess the timber for a nut you could then plug/cover after?
gaz1
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you will walk in with water your coats will drip with water rain angles will get into the area as it always does if you think it wont affect the wood it will do more so at the door way entrance
either jack it up with an inner wall or plastic 3x2 you choose your method
BrokenBiker
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I've always used frame fixings...I've put 4" fence posts into red brick, poured concrete and breeze block with them, secured wood to concrete floors and mounted a gun cabinet to a poured concrete wall with them
dobbslc
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Earplugs
MattF
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They're very little, if any, different in use to standard two tip bits. Powertoolworld are usually good on prices on the Bosch multi flute/tip bits, as I recall. They're available in the same sizes as standard SDS bits.
Use twist drills, or blacksmith's drills, for smaller holes, wood drill bits for medium sized holes, and hole saws for large holes.
Masonry / hammer drill bits are just not sharp enough for wood, plus the path from tip to flute doesn't encourage the clearance of the wood "cuttings" coming off the tip.
james butler
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bosch multi purpose drills ive found very good at going through everything although pricey
MattF
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The best way is to drill a clearance hole through the frame. Standard wood or twist drill bit is fine for that purpose. You can go through the frame with a 6.5mm drill, which will also give a good guide for the SDS bit, but then you obviously don't have a full clearance hole through the frame. Occasionally, that can cause the frame to push away from the brickwork as you're sinking the fixing in, but that's easily remedied by just backing the fixing out of the masonry & sinking it in again.
Nothing quite like having a range of opposing opinions.
Brad, I don't see anything wrong with using concrete screws to fix timber (or anything else) down to concrete. It's the concrete that's being screwed into. Let me know if I'm missing something here.
Anyway none of this answers my original question (or at least the question I had in my mind) as to whether there are certain types of fixings that should not be used with treated timber. I'm thinking about adverse reactions. I believe I've read something about this somewhere.
you are overthinking things. Wood bit (lip and spur) for holes in the wood, Mark the wall where you have drilled the wood. Switch to a 7mm masonry bit. drill holes in the wall, put brown rawl plugs in the hole, screw a 55mm screw through the timber and into the wall. Job done. You are not building anything that needs much strength
Why not?
