3 Pack OSI Sealants 9.5 oz Quad Max Window, Door and Siding Sealant, White

I've used this several times now. It's unlike any caulk I have used. Very durable and water resistant. Can't paint over it for about 48 hours in my opinion but once it's down it's there for good. I repaired several loose and crumbly panels on a garage door primed and painted it. Now it's as good as new. Also troublesome windows that were leaking with every other kind of caulk after the sun baked it for a year so. This put an end to it. It can be tooled by the way. I've seen videos that say it can't. But it certainly can.

I had to replace some Hardie plank on my house and looked up what was recommended by the OEM for sealant and OSI Quad Max is what Hardie recommends.If you want a sealant that is not going to let go and last a long time - this is it.

Recently had some windows installed and this tuff kept its shape and shines months later. So I bought some to redo some others windows at another house that were done 5 years ago. Looking forward to great results with it long term.

Amazing product