>I thought this was bad for masonry, or is the problem only
with water repellents and waterproof coatings, not with the penetrant
hardeners?

It.seems.to.me.that.typical.American.over-simplification.and.marketing.has.giv
en.a.
bad.rap.to.the.current.state.of.the.evolution.of.silicon.chemistry,started.in.
the.'50's.

Andek.has.probably.a.hundred.off-the-shelf-products,but.the.neatest.thing.is.
(being.manufacturers).they.are.able.and.willing.to.adjust.the.chemistry.of.a.p
roduct.
to.suit.the.particular.needs.of.a.project.

The.30.or.so.vendors.that.I.am.aware.of,currently.marketing.clear.masonry.coat
ings,
usually.have.a.favorite.array.of.products.from.which.they.will.pick.the.best.s
uited.to.your.given.type.of.substrate...I've.read.all.of.their.literature.and.
spoken.to.most.of.
them.and.can.say.from.my.experiences.that.they.all.fall.short.in.being.able.to
.instill.
the.confidence.that.I.need.to.specify/use.materials.of.this.nature...Actually,
there.is.
one.other.company.(name.escapes.me.at.the.moment).that,via.their.exhaustive.&.
informative.literature,are.probably.up.there.with.the.best...20.years.dealing.
w/Neil,
et.al,though...there's.no.reason.for.me.to.mess.around.

If.you've.heard.me.get.on.the.Andek.bandwagon.before,it.is.because,over.the.ye
ars,
their.dedication.to.do.right.and.do.business.in.a.forthright.&.gentlemanly.way
.has.
earned.my.upmost.respect.