On Jan 11, 1:18*pm, "Lew Hodgett" wrote:

SFWIW, While SikaFlex not only makes a very good line of marine
sealants, their primary business is in the construction market.

Their tech service is very good and has an 800#.

As usual Lew, spot on. I beleive at this point Sika makes NP! and
actually owns them. We used to use Sikaflex XX? when I was a
commercial super doing tilt wall panels. We sealed all the joints
with that stuff, with joints and inch wide and 20 feet tall (or
more).

NEVER have I seen that fail. Ever.

We use NP1/Sika for everything from fixing concrete cracks, roof
flashings, masonry repair (seal your cracked mortar and bricks up with
that stuff!) and even work boot repair. It holds paint, masonry
sealers, sticks to everything and is completely UV proof. What more
could a repair contractor want? I honestly keep about 4 -5 tubes in
my truck of different colors.

If blueman is still reading this, note no one has spoken the ugliest
word in sealants.

Silicone.

Sorry, someone had to say it. I can't think of one thing that stuff
is good for excpet disguising leaks so that they can't be seen. I
don't care what you use it for. It doesn't maintain its adhesion,
doesn't hold paint well (some of the "paintables" are better than
others) and is NOT UV resistant, no matter what the tube says.

Robert