David Burkheimer
wrote:
The interior walls of my log home have been stained with Superdeck
Natural stain. The contractor is getting ready to spray the log walls with
a clear coat at this point. The stain was applied well over a month ago
and is dry. Whatever product he uses he wants to be able to spray the product,
not brush it on (time is money). But, should coating be back brushed after
spray to avoid runs? My question is can the floor seal be used in place
of the interior wall seal to coat the interior logs using a sprayer since
its consistency is thinner? I noted the interior wall seal had to be applied
by brush because it is a thicker consistency? Also, is there any problem
using your product over an oil base stain like Superdeck "Natural" color
stain? Further, do I need to use a sanding sealer as first coat or can I
just use your product from the get go? Do we need to sand in between coats?
My home dimensions are 30' X 50' X 12' (high log walls). How many gallons
of product will I need?
Thanks
David Burkheimer
P.S. I have seen your advertisements
for years in log home magazines.
To: David Burkheimer
PolySeal is a waterbased
urethane/acrylic clear coating. You applied an oil-based product on the
interior walls. My concern is with intercoat adhesion between the Superdeck
product and PolySeal. It may or may not be a problem. A small area would
require testing to make sure that the PolySeal applies evenly and achieves
a good bond to the Superdeck coating. The Wall & Woodwork may be spray applied
but I only recommend spraying if the applicator is experienced with spraying
these types of water-based emulsions. They dry fast and allow very little
open time to rework the coating. The ability to rework drip or lap marks
is limited. Spray the clear ONLY. Avoid spraying the colors. Generally,
it is very difficult if not impossible to avoid lap marks when spraying
one of PolySeal's transparent colors. Lap marks are not as noticeable with
the clear although differences in gloss can be evident when viewed at an
angle.
A sanding sealer is not necessary. Generally we recommend using 2-3
coats of PolySeal. Sanding between coats is an option depending on your
standards and the amount of time between coats. PolySeal doesn't raise the
grain of most softwood to any great degree, so it is possible to avoid sanding.
Hardwoods are a different story. If the time between coats is greater than
a couple of weeks, then lightly sanding the coated surface before applying
another coat is a good idea in order to insure a good bond between the coats.
2-coat coverage will yield about 300 square feet per gallon per coat.
Michael
McArthur
