Door frame fixing difficulty

[brianivor]

With my new door frame came six 100mm x 10mm fixing screws and plastic wall plugs.

I have the plugs in place but I am having difficulty in tightening the screws up fully (hard to turn)

Is this usual or is there a lubricant I can use that won't rot the plastic over time?

Thank you

 

[keveljay]

10mm diameter seems a bit excessive Most fitters use a direct fixing, something like a Rapier star turn. For PVC door frames I use 7.5 x 112mm drilled at 6.5mm. they are much better than plug & screw or wall anchors as you can vary the relationship between the frame and the wall slightly, and having a T30 head means easy driving-in. Theyre solid once in. I think toolstation do small amounts, like 25 or so for £3 or £4. Give them a try if you have no joy with the plug and screw method.

 

[foxhole]

You need some Spinach

 

[^woody^]

Were the holes drilled deep enough?

 

[brianivor]

Thanks for your replies.

The fixings in question were supplied loose with the door frame with no fitting instructions (not unreasonable) - I even rang the frame supplier to ask for advice and they were unable to help.

Yes, I drilled the holes about 10 mils longer than the screw.

With regard to the hole diameter, the plastic plugs just required a light tap to enter the hole so I believe that was right, but interestingly and only yesterday, I spotted a similar pack of these fixings in a local DIY shop.

On the back of the packet it said that the screws should be HAMMERED IN with a final tightening with a screwdriver if required!

The 100mil screws I was supplied with had a POSIDRIVE TYPE HEAD so how was I to know?
Maybe that was why I stripped the head of the screw trying to tighten it up - it was impossible to screw the last 25 mils into the plug and spinach wouldn't have helped except maybe to lubricate the screw.

In the end I cut 25mils off the end of the screw and got a result - but how misleading?