Installation Guide

Applying TUFF II Over Rigid Foam & ICF
(Instructions for coating other surfaces on page 2)
IMPORTANT NOTE: Do Not Apply TUFF II Coating in
direct sunlight and Do Not Apply unless the temperature
can be maintained above 40 degrees for 24 hours. Stir
well before using.
Make sure the
surface is clean
and dry.
- First, take a wire
brush and gently
scratch the foam.
Y
ou don’t want to
gouge the foam, just roughen up the surface to clean it,
remove U.V. oxidation and open up the pores for ideal
adhesion. This is an important step.
- You may want to apply masking tape to siding, window
sills and other areas where you do not want the coating to
be applied. Drop clothes also come in handy. The coating
is easyily removed with a damp cloth when wet, but once
dry it can be more difficult.
- With the foam surface etched
the next step is to apply Sticky
Mesh HD to the entire surface.
Sticky Mesh HD is sold in rolls
150 feet long in 9.5”, 19” and 38”
widths. The Sticky Mesh adds
strength to the wall and helps
bridge seams and gaps. Overlap
runs of mesh by two inches.
- Using a trowel, large putty knife or drywall blade, apply
a thin skim coat of TUFF II to the entire area. You want
this coat about 1/16” thick, so the mesh pattern is barely
visible through the coating. Let this coat dry for at least
two hours, until it can take light thumb pressure.
- Next apply the
texture coat. Using
a trowel, large putty
knife, or a drywall
blade apply another
1/16” coat to a five
or six foot square
area. If you desire
a swirl or straight
brush texture, use a large nylon bristled brush kept moist
in a pail of clean water. A knockdown texture can be
achieved by stippling the TUFF II with a trowel and
then knocking it down. Continue moving along the wall,
applying the coating to an area and then quickly going
back to texture it before
the coating begins to dry.
Adding up to 12 ounces of
water per 5 gallon pail of
TUFF II will make it
easier to work with while
texturing. Remember
to try to work to natural
stops, like inside and
outside corners, this will help the textures appear
more uniform.
- Allow the TUFF II to dry for 48 hours before
backfilling against it. Once dry, a second coat can be
applied over the first coat if desired. TUFF II can also
be painted with any exterior grade acrylic paint.
Protects the foam & creates a richly colored, durable texture.
Once done, seal the lid for later use. More On Page 2