Which sealant is best ?

[JamesH]

I will have to replace one of the roof lights on my caravan very shortly.
I did intend using Sikaflex 512 but I recently read on the Swift forum that the Swift factory use Simpson ISR 70-03. Your opinions are welcome as to the best product to use, or are they about equal?

 

[Spurtle]

I use either Sikaflex 221 or 512 and never found either of them lacking but any equal specification, good quality polyurethane sealant or sealant/ adhesive would be up to the task.

Just make sure all surfaces are clean, dry & degreased .... and wear latex type gloves .......better quality than the ones I usually do, as the one thing Sikaflex sticks to better than anything is flesh...

White spirit in a hand spray gun is useful for tooling edges and removing excess sealant.

 

[NCC1701]

SIlkaflex has always served me well. Never had an issue with it both on the van and in other situations where I want it to last and do its job well.

Rb