Liquid is required for applying the leaf.
Mohawk Sizing Liquid & Application of Leaf
Following are the steps we recommend for applying leaf using
Mohawk Sizing Liquid. This process is important and short cuts will
result in poor adhesion, opening seams etc. Following the
directions for dry times and coating are critical for a successful
Sealing the substrate is important. We recommend our EZ
Vinyl Sealer both under and over the leaf. The substrate should be
well sealed so the sizing liquid will form a smooth, thin
continuous film over the area to be leafed. On raw wood apply an
even wet coat of EZ Vinyl Sealer and sand aggressively and then
apply a second coat of EZ Vinyl Sealer and allow to dry thoroughly.
Scuff sand the sealer with 320 grit stearated sand paper and remove
the sanding dust.
Apply a thin wet coat of Mohawk Sizing Liquid in a solid,
continuous film over the area to be leafed. Allow the Sizing Liquid
to tack before using; typical tack times are approximately 1 to 1.5
hours depending on the amount of sizing applied. Heavier
applications will give longer application windows and can be
helpful on larger projects and exterior applications. A good
indicator for proper start times is when you can lightly drag your
finger knuckle against the film and can feel tack without excessive
drag or sticking. The application window is approximately 2 hours
for typical coating thicknesses. Exceeding the window of
opportunity can lead to adhesion issues and should be avoided.
Mohawk Sizing Liquid is an oil modified varnish formula that dries
by oxidation, (exposure to oxygen). It should not be applied too
heavily or irregular drying could result. Leafing too soon over wet
sizing liquid or applying the sizing too early over wet sealer can
result in shrinkage and wrinkling of the leaf.
Once dried to the proper tack, apply the leaf by gently
guiding the sheets onto the surface in the desired pattern. Working
the sheets from the books they're supplied in while using a soft
natural bristle paint brush to help support the sheets you can
control the application. Overlap the sheets slightly to ensure a
tight gap between sheets. Continue to lay a few sheets and then use
your brush to sweep the leaf down onto the sizing for a good bond.
The brush should be soft enough not to scratch the delicate leaf
material. You will break away the overlap which is left as you
brush across the leaf causing it to break with little to no gap.
Keep some sheets applied ahead of this step and use care not to
brush the scrap out over your tacky sizing. Once your sizing starts
to lose its tack you should stop and reapply the sizing liquid to
regain the proper tack. Work sections at a time if possible to
maintain the proper tack. Avoid any imperfections to the sizing
such as finger prints from testing tack or brush marks etc. since
they will telegraph through the leaf.
Once the leaf is applied you must allow the sizing liquid
to fully cure before proceeding with the rest of the finish. The
sizing liquid dries by oxidation and is now covered by leaf which
will slow down the curing process. Rushing at this stage will cause
adhesion failures, cracking and opening of seams. Allow a minimum
of 12 hours before proceeding with your finish. Additional dry time
is good insurance for a successful finish.