Bitumin and silicone sealant

[ChattingLil]

sorry, this isn't a boaty question, but I'm pretty sure somewhere here can answer this question.

I've bought a packet of "Flashband Self Adhesive Flashing Tape" to effect a repair at home. A previous repair has included the application of silicone sealant.

A warning on the packet of Flashband says "Flashband is bituminous and must not come into contact with silicone sealant".

Does anyone know why?

All I can find on the internet is that the sealant can cause staining.

 

[oldsaltoz]

I suspect this refers to new sealant as it will react and possible form beads.

A bit the reaction you get if you try to apply fibreglass over bitumen.

A small test section should suffice.

Good luck.

 

[vyv_cox]

Silicones have an inhibiting effect on many products. I cannot imagine that it will affect a bitumen product to a severe extent but it will certainly prevent adhesion of the tape.

 

[Fantasie 19]

..prevent adhesion of the tape.

+1

..probably same reason you can't paint on top of silicone either..