I am building a dive platform out of pressure treated wood, and plan on
painting it with herculiner bedliner polyurethane paint. Herculiner says it
may not adhere well to PT and suggest priming with a xylene compatible
primer. Unfortunately they will not recommend a primer, instead telling me
to go to a paint store.
The paint store says that xylene will strip anything, so there is no such
thing as a xylene compatible primer. ARRRRRGHHHH
Any suggestions, other than not painting the PT with the herculiner? I have
repeated emailed Bullseye, but they do not reply.
I don't know what your paint store is talking about but more about that
later. First let's talk about Pressure Treated Lumber (PTL). For many years
the PTL manufacturers used solutions of copper, chromium and arsenic to
impregnate pine lumber. EPA recently forbade the use of this type of PTL but
I suspect there is still quite a lot waiting to be sold. I don't know what
the EPA approved replacement is so I can only comment on the old grade.
Over the years there have been many opinions about how to coat PTL. These
ideas have been all the way from painting it immediately to painting after
five years. Most opinion seems to be to leave it to the elements for a year
and this is what I have done. After this time all the surface salts will
have been washed off. In fact you may wish to pressure wash the PTL before
I suspect that what Herculiner is saying is that their coating contains some
xylene which is a solvent. What you need is a clear wood primer which is a
deep penetrating type. I don't know any trade names for this but you could
try Zinnzer Company in Google. When this has dried for a week you then apply
the urethane. While you are waiting for your dive platform to age you could
do some tests on some scrap PTL which has been left out to age for six
months. You should look for signs of 'lifting' (sometimes looks like
blistering). If you don't get any bad reaction then off you go. BTW, there
are many coatings which will resist Xylene although most of these are
Hope this helps. Good luck.
I have just looked up Zinnzer (actually Zinsser) with Google and discovered
that Bullseye is one of Zinsser's product lines. Ah well, we live and learn.
Try getting advice from another paint store; see if they say the same as I.
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