DAP 100% Silicone Rubber safe?

[Flash081]

Title. Is the DAP 100% clear Silicone Rubber Sealant safe to use for a DIY slate cave?

It's made for doors, windows, siding, vents, and gutters.


It doesn't say anything about mildew prevention but it does say, "Meets ASTM c920, Class 25."

[jetajockey]

DAP makes an aquarium safe specific silicone. I contacted them a few months ago and asked them which of their silicones are aquarium safe and they said that none of them are for aquarium-use except for the type specifically labeled to do so.

That said, I've read about people using ge silicone I without any issues, but it's really not worth risking IMO.

[Gti_Leo]

DAP used to print aquarium safe on there 100% silicone, then i guess they realise they can make more money by labling one as aquarium silicone.

as long as a silicone is 100% silicone with now mold/ mildew aditives or is not the paintable kind, then it will be aquarium safe.