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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Floorboard screws
How best to screw down old floorboards ?
Spax Flooring Screw ? file:///home/george/diy-ub/Spax-Flooring-Screw-Zinc-Yellow-Passivated-4-5-X-60mm-Pack-of-300.html.mht They have a smooth bit of shaft so the floorbaord will be pulled down tight, but the bit of thread at the top seems to me to spoil this effect: either the thread there will grip and hold the board up, or it will tear the wood, pulling the board down. So why have a bit of thread at the top? [g] |
#2
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Floorboard screws
On 14/03/2011 12:00, george [dicegeorge] wrote:
How best to screw down old floorboards ? Spax Flooring Screw ? file:///home/george/diy-ub/Spax-Flooring-Screw-Zinc-Yellow-Passivated-4-5-X-60mm-Pack-of-300.html.mht Please give a proper link. How are we supposed to access a file on *your* hard disk?! -- Cheers, Roger ____________ Please reply to Newsgroup. Whilst email address is valid, it is seldom checked. |
#3
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Floorboard screws
I''ve not used them yet but I have bought some in readiness for a small
job and the answer on the Axminster site was "Upper thread locks the top board securely (No more squeaks)". -- Robin PM may be sent to rbw0{at}hotmail{dot}com |
#4
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Floorboard screws
On 14/03/11 13:06, Roger Mills wrote:
On 14/03/2011 12:00, george [dicegeorge] wrote: How best to screw down old floorboards ? Spax Flooring Screw ? file:///home/george/diy-ub/Spax-Flooring-Screw-Zinc-Yellow-Passivated-4-5-X-60mm-Pack-of-300.html.mht Please give a proper link. How are we supposed to access a file on *your* hard disk?! ooops... http://www.screwfix.com/prods/88716/...mm-Pack-of-300 [g] |
#5
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Floorboard screws
In article , george [dicegeorge]
writes On 14/03/11 13:06, Roger Mills wrote: On 14/03/2011 12:00, george [dicegeorge] wrote: How best to screw down old floorboards ? Spax Flooring Screw ? file:///home/george/diy-ub/Spax-Flooring-Screw-Zinc-Yellow-Passivated-4-5-X- 60mm-Pack-of-300.html.mht Please give a proper link. How are we supposed to access a file on *your* hard disk?! ooops... http://www.screwfix.com/prods/88716/...s/Spax/Spax-T- Star/Spax-Flooring-Screw-Zinc-Yellow-Passivated-4-5-X-60mm-Pack-of-300 I can't see the benefit of those over conventional, fully cut screws. If the board is not fully tightened to the joist already then the final tightening action of pulling the board down will cause the top thread to strip out of the board so the benefit of that part is lost. In a similar spot, I'd use these: http://www.screwfix.com/prods/22388/ Just noticed however that yours are marginally cheaper per screw so hey, go for it. Btw, for more manageable screwfix links, it's ok to strip the part after the part code, it's redundant. -- fred FIVE TV's superbright logo - not the DOG's, it's ******** |
#6
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Floorboard screws
On Mon, 14 Mar 2011 17:27:08 +0000, fred wrote:
In article , george [dicegeorge] writes On 14/03/11 13:06, Roger Mills wrote: On 14/03/2011 12:00, george [dicegeorge] wrote: How best to screw down old floorboards ? Spax Flooring Screw ? file:///home/george/diy-ub/Spax-Flooring-Screw-Zinc-Yellow-Passivated-4-5-X- 60mm-Pack-of-300.html.mht Please give a proper link. How are we supposed to access a file on *your* hard disk?! ooops... http://www.screwfix.com/prods/88716/...s/Spax/Spax-T- Star/Spax-Flooring-Screw-Zinc-Yellow-Passivated-4-5-X-60mm-Pack-of-300 I can't see the benefit of those over conventional, fully cut screws. If the board is not fully tightened to the joist already then the final tightening action of pulling the board down will cause the top thread to strip out of the board so the benefit of that part is lost. In a similar spot, I'd use these: http://www.screwfix.com/prods/22388/ Unless I'm mistaken those appear to be left-hand thread. |
#7
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Floorboard screws
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#8
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Floorboard screws
In article , Appelation
Controlee writes On Mon, 14 Mar 2011 17:27:08 +0000, fred wrote: In a similar spot, I'd use these: http://www.screwfix.com/prods/22388/ Unless I'm mistaken those appear to be left-hand thread. Self tightening (in the northern hemisphere) ;-) Here's a pic of the non self tightening version: http://i55.tinypic.com/wqoizs.png -- fred FIVE TV's superbright logo - not the DOG's, it's ******** |
#9
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Floorboard screws
On 14/03/11 22:01, Appelation Controlee wrote:
On Mon, 14 Mar 2011 17:27:08 +0000, wrote: In , george [dicegeorge] writes On 14/03/11 13:06, Roger Mills wrote: On 14/03/2011 12:00, george [dicegeorge] wrote: How best to screw down old floorboards ? Spax Flooring Screw ? file:///home/george/diy-ub/Spax-Flooring-Screw-Zinc-Yellow-Passivated-4-5-X- 60mm-Pack-of-300.html.mht Please give a proper link. How are we supposed to access a file on *your* hard disk?! ooops... http://www.screwfix.com/prods/88716/...s/Spax/Spax-T- Star/Spax-Flooring-Screw-Zinc-Yellow-Passivated-4-5-X-60mm-Pack-of-300 I can't see the benefit of those over conventional, fully cut screws. If the board is not fully tightened to the joist already then the final tightening action of pulling the board down will cause the top thread to strip out of the board so the benefit of that part is lost. In a similar spot, I'd use these: http://www.screwfix.com/prods/22388/ Unless I'm mistaken those appear to be left-hand thread. I guess they accidentally reversed the image. Still havent seen a convincing reason for the short thread at the top of http://www.screwfix.com/prods/88716/ why oh why? [g] |
#10
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Floorboard screws
Still havent seen a convincing reason
for the short thread at the top of http://www.screwfix.com/prods/88716/ why oh why? For my education, what please was unconvincing about the explanation from the Axminster site that I posted please? (That was ""Upper thread locks the top board securely (No more squeaks)" -- Robin PM may be sent to rbw0{at}hotmail{dot}com |
#11
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Floorboard screws
On Mar 15, 1:35*pm, "george [dicegeorge]"
wrote: Still havent seen a convincing reason for the short thread at the top ofhttp://www.screwfix.com/prods/88716/ Finer pitch than the main thread, so it locks the board against the screw head, but still allows them to be tightened down onto the joist. |
#12
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Floorboard screws
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#14
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Floorboard screws
On 15/03/11 15:48, Andy Dingley wrote:
On Mar 15, 1:35 pm, "george wrote: Still havent seen a convincing reason for the short thread at the top ofhttp://www.screwfix.com/prods/88716/ Finer pitch than the main thread, so it locks the board against the screw head, but still allows them to be tightened down onto the joist. http://en.wikipedia.org/wiki/Screw_t....2C_and_starts shows me what pitch is. But Spax Flooring Screws threads top and bottom look the same pitch at in the picture at: http://www.screwfix.com/prods/88716/ Thinking again maybe how it works is that the lower thread drills through the floorboards into the joist and when the smooth middle bit is in the floorboard it pulls the board down with friction on the (not totally) smooth centre of the screw. Then, when the top bit of thread gets into the floorboard that fixes the floorboard into the position it is so it doesnt ever move again due to changing humidity etc. Its unlikely that the top bit of the thread on the screw will start exactly where the new groove starts in the floorboard, so it will carve a slightly larger groove, which may help if the boards expand due to humidity changing. Or something like that. I'll order a box tonight! [g] |
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