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Home > Application Instructions for Flexible Veneer
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| This Page
Contains Application Instructions
For 10 mil, 2-ply and 3-ply Sheets. |
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| For
Detailed Application Instructions on PSA (Peel and Stick) Sheets
Click Here |
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Step 1
TOOLS & SUPPLIES |
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| Application Tool - Veneer Scraper |
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A
veneer scraper, or the
equivalent should be available. Do not use J-Rollers or hammer
blocks.
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| Choosing the Adhesive |
| Solvent based
contact adhesives work best with veneer products. Alternatively
FSV Veneer Adhesive
is a great
environmentally friendly alternative to contact cement.
If choosing FSV Adhesive, do not use instructions below, instead
please read the
FSV Features and
Application Guide for application instructions.
Water based
products should be avoided when possible.
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| Application
Instructions for Contact Cement |
| The adhesive should be applied
uniformly to both the substrate and veneer. 100% glue coverage is
recommended. This is especially critical to the edges and areas where
veneer sheets butt together. Any areas void of glue adhesive can bubble.
If the substrate is porous and absorbs adhesive, a second coat is
required. The veneer back should be coated also. Follow the glue
manufacturer's recommendation on open time before bonding the veneer to
the substrate. |
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Have on hand a supply of bare, 1/8"
hardboard separator strips. The separators need to be long enough, and
enough of them to completely cover the area coated with contact
adhesive. Two separators, half the width of the substrate may be used,
but using multiple separators about 6" wide will make it easier to slip
and remove them as you make contact across the panel.
Contact adhesive adheres on contact.. |
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Step 2
VENEER &
SUBSTRATE PREPARATION
• Acclimate substrates and veneer for at least 48
hours.
• Determine how many coats of adhesive the substrate will require.
• Porous substrates will require two coats
• Lay out veneer and allow it to relax. Boards or panels
may be used to flatten sheets showing any curl.
Coat both substrate and back of the veneer with a smooth layer of contact
adhesive. We recommend rolling. If adhesive is sprayed, it must coat
100% of both surfaces. Make sure you honor manufacturers Instructions
concerning open time. |
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| Adhesive coverage is the key element in
successful application of veneer. |
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Example of inadequate adhesive coverage. |
Example of
adequate adhesive coverage. |
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| Some fullness or curl is normal in
all veneer products. Fully acclimating sheets under weight will reduce
this situation. Because tight grain woods such as Maple are most
susceptible to curl caused by moisture, they will require close
attention. When covering large panels, use the centerline method
outlined below. |
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Step 3
VENEER
APPLICATION
Apply veneer to substrate Do not attempt to start on
one edge of a wide panel. Use the centerline method of applying the
sheet to the substrate. (See the drawing above)
• Lay out separator
strips on substrate.
• Make initial contact down the centerline of the sheet and substrate.
• Grasp the East half of the sheet and pull it taut to remove any
fullness.
• Lower the tightly stretched sheet and move the separator strip away
from the centerline
• Using the scraper bear down on the contacted area to bond the
two adhesive surfaces.
• Repeat process for the West half.
• Using your body weight and both hands to exert maximum pressure
through the veneer into the adhesive, press the entire panel again with
the scraper. |
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Start in the center of the veneer sheet and
work out towards the edge of the sheet.
Always work in the same direction as the grain
of the veneer, paying special attention to the edges.
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| The
veneer scraper is designed for
joining surfaces with contact adhesive. |
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Step 4
INSPECTION &
FINISHING
Inspect the panel by shining a light across the grain.
(See frame below) Insure that any problems are corrected prior to
proceeding.
Types of bond problems
Ridges
Ridges result from inadequate adhesive coverage or adhesive
manufacturers drying time is not being honored. Adhesive that is not dry
allows the veneer to expand across the grain to form ridges in the grain
direction, and generally all across the face. Allow adhesive to fully
dry. If adhesive has legs when sheet is pulled off substrate, adhesive
was not fully cured before bonding.
Bubbles
Bubbles occur as a result of lack of adhesive or insufficient pressure
applied during application. Using J-rollers will generally result in
bubbles. Use a
veneer scraper to make bond. Overlap strokes. Finishing
materials or high moisture conditions will cause veneer to expand. Areas
of marginal bond will pop up into blisters. Slit the blister and check
for adhesive coverage. |
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Ironing bubbles
If iron is used to repair bubbles, place a piece of Kraft paper between
the iron and veneer to keep from scorching surface. Keep iron moving.
Sanding
Flexible veneer is very thin. Excessive sanding may result in sand
through. Do not use any grit coarser than 180.
Finishing
Most finishing materials are suitable for use on flexible veneer. It
is however vary important that all finishing materials be tested for
appropriate results. Water based finishes will cause veneer to try to
expand. It is vital that the bond is well executed.
Touch up
Wood fillers such as Famowood and other popular brands may be used to fill small
voids in the surface. |
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Bubbles may be repairable. Slit
in grain direction, and heat with a warm iron to reactivate
adhesive. If adhesive coverage is scant the bubble will not
adhere.
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| SUMMARY |
Adhesive
• Apply adhesive in a smooth solid coat.
• Apply full wet coat over 100% of both surfaces.
• Apply two coats on any porous substrates.
• Honor all working times set by adhesive manufacturer.
• Check with your adhesive manufacturer before using PVA
adhesive with flexible veneer.
Substrates
Do not attempt to apply flexible veneer products to the following
substrates:
• Sheet rock, or drywall
• Plastic laminate or melamine board
• Spiral wound cardboard tubes
Application
Apply two coats of contact adhesive to porous substrates.
• Always use the centerline technique to start application
• Acclimate the veneer and the substrate before
application
Pressure
You must apply all possible pressure with a narrow rigid
scraper.
• Do not use J-Rollers
• Do not use hammer blocks
• Scrape twice
Wood expands with moisture! Weak bonds will allow flexible
veneer to
expand in the presence of moisture. This will invariably result
in ridges or blisters. |
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| We recommend that thorough testing of this product,
adhesives and finishing materials be completed prior to final
application.
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Have additional questions?
Please don't hesitate to call us TOLL FREE at
1-888-506-6678. Our office is open Monday - Friday from
9:00 a.m. to 5:00 p.m. Eastern Time. You can also take advantage
of our Online Chat: an experienced woodworker is often online, ready to
answer any questions you may have. |
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