I had the toilet cassette out today and then could see light coming through on the outside edge of toilet seat support curve. Looks like "someone",(factory person) has applied silicone over the mastic to cover original poor application from 2014.
Once I remove the offending goop, what is the best product to re seal please ?
Thetford say Butyl sealant, but Sellys only give theirs a 5 year life span.
I would just use Sikaflex. Sticks and seals. It always does a good job.
Craig1 said
07:30 PM Feb 16, 2023
Crappy job.- wrote Snappy BOB
Does that mean I should use " crapalastic " to repair, or " Holy batstick " ??
-- Edited by Craig1 on Friday 17th of February 2023 09:03:45 AM
TimTim said
09:10 PM Feb 16, 2023
Run two strips of masking tape about 5mm either side of the gap you want to fill. It looks like it will be a big gap so may have to go more. Cut the nozzle to suit and apply a bead of sikaflex to the gap. You can then either use your finger or one of the special spreaders from the big green shed to smooth it off and feather the edge to the edge of the making tape.
If you use your finger do not wipe it on the inside of cupboards or the underside of shelves etc like they do when they build the vans
Craig1 said
05:44 PM Feb 17, 2023
Spoke to both Thetford and Sikaflex today.
Conclusion is to use Sika 295 UV , with a primer first and also Remove All existing goop as a must.
Bobdown said
05:50 PM Feb 17, 2023
Craig1 wrote:
Spoke to both Thetford and Sikaflex today.
Conclusion is to use Sika 295 UV , with a primer first and also Remove All existing goop as a must.
Then keep your butt off it for a few weeks........
I had the toilet cassette out today and then could see light coming through on the outside edge of toilet seat support curve. Looks like "someone",(factory person) has applied silicone over the mastic to cover original poor application from 2014.
Once I remove the offending goop, what is the best product to re seal please ?
Thetford say Butyl sealant, but Sellys only give theirs a 5 year life span.

Crappy job..
I would just use Sikaflex. Sticks and seals. It always does a good job.
Does that mean I should use " crapalastic " to repair, or " Holy batstick " ??
-- Edited by Craig1 on Friday 17th of February 2023 09:03:45 AM
Run two strips of masking tape about 5mm either side of the gap you want to fill. It looks like it will be a big gap so may have to go more. Cut the nozzle to suit and apply a bead of sikaflex to the gap. You can then either use your finger or one of the special spreaders from the big green shed to smooth it off and feather the edge to the edge of the making tape.
If you use your finger do not wipe it on the inside of cupboards or the underside of shelves etc like they do when they build the vans
Conclusion is to use Sika 295 UV , with a primer first and also Remove All existing goop as a must.
Then keep your butt off it for a few weeks........