Re-Seating toilet in fibreglass Filler or wooden dowels?

[Jamesuk]

I have had a few to many 80kg plus using the heads in heavy seas and because the 37045 series is screwed down with 3 instead of four screws it has become loose.
Te toilet is off, the dremel has made 3 haggered screw holes perfectly round so ideal for a dowel but i can use abother bit to make the holes ready for filling.

Thanks

James

Off to the boat show on Saturday

 

[jon711]

Hard to give an exact answer, but I would have thought that dowels will not be very strong - there is a lot of wringing on the mounting bolts. Can you fit a Formica covered ply, to the mounting surface, and fix to that? The wringing effect is then spread over a larger area, and may be mor secure... Failing that I would refill the holes with epoxy and microfibres and see how you get on....

Jon

 

[TangaraToo]

Is there any sort of air gap under the mounting surface?

 

[Deleted member 36384]

..... I would refill the holes with epoxy and microfibres and see how you get on....

Jon

This is probably the best way. Over size the holes, make sure the wood is bone dry, wet out with neat epoxy so the foundation soaks up the epoxy if its wood (rough up the hole sides if its GRP), then fill the hole with the thickened epoxy. Once set attach toilet as appropriate.

 

[VicS]

I have had a few to many 80kg plus using the heads in heavy seas and because the 37045 series is screwed down with 3 instead of four screws it has become loose.
Te toilet is off, the dremel has made 3 haggered screw holes perfectly round so ideal for a dowel but i can use abother bit to make the holes ready for filling.

Thanks

James

Off to the boat show on Saturday

The trouble with dowels is that you will then be screwing into " end grain". Never the most secure.

You don't say what the structure is you are fixing to, or how thick. Longer and larger screws may be a step in the right direction if possible.

Through bolting presumably not an option ?

Woodserts or something along those lines likely to be any impovement ?

 

[macd]

If through-bolting isn't possible, this is how I'd do it (unless I were expecting only anorexic nymphettes on board in future, which is unlikely):
bolt loo to something substantial (ply, or metal or hefty GRP sheet if you don't want to raise the loo too much). Counterbore the substrate to clear the bolt heads.
Bolt loo to substantial thing.
Screw substantial thing down with lots of...er, screws. Don't glue it or you'll never get the loo off again.

Of course, buckets are simpler.

 

[jerrytug]

Through-bolts are essential surely,with angle iron or RSJ type backing or thick hardwood strongbacks. If you imagine the force exerted by a 100 kilo man landing on it backwards, having been thrown across the boat when you hit a goffer, it should obvious that little twiddly screws won't be safe. That's how I installed mine anyway, and it seems adequate but no more. It was quite a big job

 

[Jamesuk]

The trouble with dowels is that you will then be screwing into " end grain". Never the most secure.

You don't say what the structure is you are fixing to, or how thick. Longer and larger screws may be a step in the right direction if possible.

Through bolting presumably not an option ?

Woodserts or something along those lines likely to be any impovement ?

Hi, this is the best currently i can do to give you an idea of what base it has to fix to zoom into the floor base.
Fibreglass floor with no access to the underside. currently its fixed in place using wood scews. I know that sikaflex would hold it firm but id prefer not to go down that road.

 

[macd]

Hi, this is the best currently i can do to give you an idea of what base it has to fix to zoom into the floor base.
Fibreglass floor with no access to the underside. currently its fixed in place using wood scews. I know that sikaflex would hold it firm but id prefer not to go down that road.

If you can't contrive access to the underside, then as I wrote, another sheet of GRP, bolt loo to that, counterbore existing GRP, screw new GRP to that (with an abundance of screws instead the three that aren't up to the job at present).

 

[PabloPicasso]

Hi, this is the best currently i can do to give you an idea of what base it has to fix to zoom into the floor base.
Fibreglass floor with no access to the underside. currently its fixed in place using wood scews. I know that sikaflex would hold it firm but id prefer not to go down that road.

Don't use sickly flex! Tek7 is a cheaper widely available adhesive and even works in the wet. Even under water. I've wasted too much cash on sickly flex. How useless is a sealant that needs everything to be bone dry to work... ... On a boat. I don't care where you sail, boats are inherently wet and damp. Especially under the loo!

 

[macd]

Don't use sickly flex! Tek7 is a cheaper widely available adhesive and even works in the wet. Even under water. I've wasted too much cash on sickly flex. How useless is a sealant that needs everything to be bone dry to work... ... On a boat. I don't care where you sail, boats are inherently wet and damp. Especially under the loo!

Now why would he use anything sticky unless he expected the loo to last longer than he does?