Washers and caps for toilet installation

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MoonMan2

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I'm in the process of installing a new toilet.

I'll obviously need to purchase nylon washers to secure the pan, using screws shown, to the floor.

20250329_114430.jpg



20250329_114517.jpg




Is there a standard type of nylon washer for this type of job?

Also, I've seen white caps that fit over these screws to make it all look neater. What are they called?
 
If those are zinc screws or even galvanised then don’t bother, as above a pan fixing kit would be better as they tend to use stainless steel screws. If yours are stainless steel then screw caps/cover caps are what you want. A pan fixing kit will give more longevity than what you propose.
 
Traditionally brass screws were used to secure a toilet down. They are a little softer when it comes to tightening down onto ceramics. Don't use the screws you have as they look like standard wood screws and will rust in no time, especially if there are any males using the toilet. You also want the screws to be nice and beefy, 6mm at least and be long enough to penetrate to at least the full depth of the floor or a little more.

Wood Brass Screws | Hardware | B&Q

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Or as suggested, use a fixing kit though I must be honest I have yet to find one that is actually any good.
 
Last edited:
Be careful when sourcing brass screws that you're not sold "brassed" ones. These are ordinary mild steel but covered with something that makes them look like brass and with a rip-off price to match!
 
I have drilled pilot holes in readiness for securing the toilet pan to the chipboard flooring (22 mm thick).

20250403_105957.jpg


20250403_110028.jpg


20250403_111303.jpg



I am concerned of the wall plugs and to an extent the screw length. As the wallplug is 50mm in length, will it not just ‘pop’ through the chipboard and fall into the solum, never to be seen again when I try to insert it?

Also, 40mm is quite a distance from the head of the screw (flush on toilet pan) to the floorboard.

I have drawn this diagram to how I believe how things will connect up.

20250403_111737.jpg


Please advise.
 
The wall plug is for masonry, so walls, concrete floors etc. Just use the screw as is, or maybe opt for a shorter one.
 
Stuckinarut said:
The wall plug is for masonry, so walls, concrete floors etc. Just use the screw as is, or maybe opt for a shorter one.
Click to expand...
If you've already drilled holes in the chipboard to accommodate the plugs then the screws won't bite into the chipboard. Your best bet now is to use butterfly cavity fasteners which spring out behind the chipboard.
 
ChrisJP said:
If you've already drilled holes in the chipboard to accommodate the plugs then the screws won't bite into the chipboard. Your best bet now is to use butterfly cavity fasteners which spring out behind the chipboard.
Click to expand...
Those holes aren't big enough for a plug, but will take a fatter screw
 
ChrisJP said:
If you've already drilled holes in the chipboard to accommodate the plugs then the screws won't bite into the chipboard. Your best bet now is to use butterfly cavity fasteners which spring out behind the chipboard.
Click to expand...

I would not advise those, they will rust and seize up in no time. If the holes have been drilled, to size for plugs, then better to just move the pan a fraction, so new, correctly sized pilot holes can be drilled.
 
The pilot holes aren't big enough to take the plugs. The holes are only 3mm in diameter.

So I shouldn't use wall plugs?

What about just using 5x60mm screws to penetrate nearly 20mm into chipboard like these?
 
Last edited:
No wall plugs are, as the name suggests, for fixing screws into masonry walls. I don't think they'd actually work in chipboard.
 
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