PARTIALLY REINFORCED FLUOROPOLYMER COATING SYSTEM
Metal Roofs with existing PVDF Finish
The Acrymax ARS-2-PVDF-A Roof Coating
System is a partially reinforced elastomeric roof
coating system that is designed for use on metal
roofs with existing factory applied fluoropolymer
(PVDF) finishes. This system provides
protection, weatherproofing, and architectural
color. It exhibits excellent adhesion, exceptional
durability, and long-term weatherability.
As specified the ARS-2-PVDF-A system
provides coating thickness of 7-10 mils on the
field of the roof and 40 mils on the reinforced
The materials used in the ARS-2-PVDF-A System may include but not be limited to:
• AF-5500 Fluoropolymer Coating
• AF-5500P Fluoropolymer Primer
• AF-130BC Basecoat
• Poly-1 Polyester Reinforcement Fabric
• AF-315 Fibrated Acrylic
3. APPLICATION EQUIPMENT
Acrymax coatings can be applied by brush,
roller, or spray. Airless spray is the most efficient
method of application where proper conditions
and expertise exist. Spray Equipment for AF-
5500 should be capable of 1 gallon per minute
output and 1,500 psi pressure. A reversible, selfcleaning
tip with orifice size of .015" to .021"
should be used. For AF-130 coatings spray
equipment should be capable of 2500 – 3000 psi
with output of 2 - 2.5 gallons per minute. A
reversible, self-cleaning tip with orifice size .027
to .041” should be used. Application by roller or
brush may require additional coats to achieve
uniform coating thickness, but material
requirements will generally remain the same.
Rollers should be medium or long nap. (3/4”
Installation of the ARS-2-PVDF-A roof coating
system is accomplished in six (6) basic steps:
(d) Treatment of seams, fasteners, and details
(e) Application of roof coatings
Before installation of the ARS-2-PVDF-A system
an adhesion test must be done to verify
adequate adhesion of AF-5500 to the existing
roof finish. Consult Acrymax.
All necessary roof repairs must be done
according to good construction practices
including the replacement of all metal roof
panels that are deemed unsalvageable or
unsafe. All panel fasteners must be checked and
any loose fasteners must be tightened or if
necessary replaced with oversized fasteners.
Acrymax roof coatings must have a clean
surface to adhere to. Proper roof surface
preparation is the key to successful applications
of all coating systems! All dirt, debris, oils, and
contaminants that can interfere with adhesion of
coatings must be removed by the most effective
method possible. High pressure water is the
recommended method when appropriate.
Vacuuming, stiff brooming, and low pressure
water washing also can be used. If cleansers
are used all residues must be completely removed with thorough rinsing. When highpressure
water washing is used it should be
done at a pressure suitable to remove
embedded dirt and contaminants without
damaging the substrate that is being cleaned
and care must also be taken to make sure that
water does not intrude into the building.
A tape test should be used to determine
acceptability of cleaned surface for coating
application. This is done by applying masking
tape to the surface to be coated, and then
peeling off the tape. If the adhesive side of the
tape shows contaminants that will interfere with
the adhesion of the coatings, then further
cleaning or use of a primer may be necessary.
Inadequate preparation of corroded metal
roof surfaces can lead to premature failure of
the roof coating system. Rust must be
removed using the most rigorous method
suitable for each particular job. Jet water
blasting, sand blasting, power wire brushing are
effective. Coatings must not be applied over
loose untreated rust.
Rust must be removed by the most rigorous
method suitable for the particular project.
Prepared surfaces should be primed with AF-
5500P immediately after cleaning to prevent rust
from reoccurring. AF-5500P should be applied at
the minimum rate of 1 gallon per 200 square
feet. On roofs that exhibit minor or localized rust
spot prime these areas. On some roofs AF-
5500P may be required on the entire roof.
Primer must only be used after proper and
thorough preparation of the surface to be
primed. Consult Acrymax for complete
information on treatment of rusted metal.
AF-5500 must be applied as a primer to roof
seams, around penetrations, and all other areas
that will be reinforced or sealed with AF-315
Fibrated Acrylic. Extend the prime coat at least
3” beyond the area that will be reinforced. A 3”
circle around any exposed roofing fasteners
must also be primed.
(d) Seams, fasteners, & details
Seams, flashings, roof penetrations, and other
details should be reinforced as necessary.
1. Make sure that area to be reinforced has
been adequately primed with AF-5500.
2. Apply liberal coat of AF-130BC to the area
to be reinforced.
3. Immediately embed the appropriate width
Poly-1 Reinforcement Fabric into wet
coating. Make sure that Poly-1 is fully
embedded, tight to roof surface, and without
air pockets, fishmouths, or wrinkles.
4. Apply saturation coat of AF-130BC to the
top of the fabric to completely saturate and
provide a weatherproof seal. Apply liberal coat of AF-130BC to area to be reinforced.
5. Apply additional coat of AF-130BC at rate of
1 gallon per 100 square feet to cover all
|Estimated Acrymax AF-130BC coating required to install
reinforcement per 100 linear feet
Note: The above estimated material
requirements are for coating materials that are
required to apply the tack coat that is used to
embed Poly-1 and for the saturating coat that is
applied after reinforcement has been installed.
These areas that have been reinforced must
then be coated with an additional coat of AF-
130BC applied at the rate of 1 gallon per 100
square feet. These areas must also be coated
again with each subsequent application of
coatings that are part of the system. Special
attention should be given to insure complete and
adequate coverage at these critical areas.
Alternative Seam Treatment: Apply AF-315
Fibrated Sealer using a brush to an appropriate
thickness (up to 3/16”) extending the sealant a
minimum of 2” on either side of the seam while
feathering the edges. This method should only
be used where gap at seams is less than 1/8”.
Seams with gap greater than 1/8” should be
reinforced with Poly-1.
Treatment of fasteners: Create a watertight
seal on all previously primed fastener heads by
applying a heavy dab of AF-315 to the tops of all
(e) Application of Roof Coatings
Before application of roof coatings verify that the
surface to be coated is cleaned and prepared properly. At any time during application of the
Acrymax system if roof surface becomes
contaminated with dirt, dust or other materials
that will interfere with adhesion of the coatings
then cleaning measures must be taken to
restore the surface to a suitable condition. Dust
should be blown off of surfaces to be coated
with blowers immediately before application of
Note: Corrugated metal roofs represent a larger
surface area than would be encountered on a
flat roof of similar dimensions The particular
corrugation factor of the roof to be coated must
be used to calculate the actual surface area to
be coated. This factor can add 10-50% or more
to the area calculated by using the dimensions
of the roof.
Acrymax Fluoropolymer coatings must be
applied in a minimum of 2 coats. Additional
coats may be required to achieve desired dry
1. Base Coat – Apply Acrymax AF-5500 in a
uniform manner at the rate of .5 to .75 gallons
per 100 square feet. Allow to dry.
2. Finish Coat – Apply Acrymax AF-5500 in a
uniform manner at the rate of .5 to .75 gallons
per 100 square feet
Allow 4 hours minimum dry time between coats.
On sloped roofs or vertical surfaces 3 or more
coats may be required to prevent sagging of
Minimum dry film thickness required for AF-5500
is 7 mils. (1 gallon per 100 square feet = 7 mils,
1.5 gallons per 100 square feet = 10 mils) If
necessary apply additional coat(s) of AF-5500 to
achieve necessary film thickness.
Inspect entire roof area and touch-up deficient
areas with additional Acrymax AF-5500 as
necessary to insure complete and uniform
coverage. Special attention should be given to
critical areas of roof such as seams, fastener
heads, roof penetrations, etc.
These are general guidelines for application of
the Acrymax ARS-2-PVDF-A System. The
material requirements may vary depending on
the specific job requirements. If unusual
conditions exist, contact Acrymax Technical
Service at 610-566-7470. Acrymax Fluid Applied
Elastomeric roofing systems must be applied to
structurally sound substrates. All surfaces must
be clean and dry before application of roofing.
The suitability of Acrymax coatings or systems
for an intended use shall be solely up to the
user. Drying time and coverage are not
guaranteed. Acrymax roofing systems must not
be applied over wet insulation or related
materials. Failure of the substrate does not
constitute failure of the Acrymax coating or
system. Acrymax systems are designed for use
on well drained roofs, however, they are
acceptable for use where poor drainage causes
temporary ponding. Acrymax Coatings should
not be applied when rain or freezing
temperatures are expected within 24 hours of
Acrymax offers limited material warranties for
the ARS-2-PVDF-A system when all materials
are used in strict accordance with all of
Acrymax’s written requirements and
recommendations and required dry film
thicknesses are achieved. Acrymax’s sole
responsibility under this limited material warranty
is for defective material and Acrymax’s
obligation shall not exceed the purchase price of
the Acrymax materials used or part thereof
proven to be defective. Submittal of required
documentation is required for warranty. Consult
Acrymax for details. This warranty gives specific
legal rights and you may have other legal rights
that vary from state to state. No statement by
anyone may supersede this limited material
warranty, except when done in writing by
Acrymax’s Technical Service Office in Media,
PA. Specific jobs that meet certain
requirements, are pre-approved by Acrymax,
and applied by an Acrymax approved applicator
may qualify for system warranties covering labor
and material. (Consult Acrymax)
1. Acrymax coatings are waterborne. Consequently application of these materials must not be done when rain or other conditions such as fog or heavy dew are possible before coating can dry sufficiently to be resistant to these occurrences. Drying time is affected by numerous factors including temperature, direct sunlight, relative humidity, air movement, thickness and color of applied coating, etc... Under proper conditions dry times for coatings will be from 2 to 4 hours, but under adverse conditions dry times can range to 12 hours or more. Application should not be done when temperatures are below 45°F or expected to drop below freezing before coating is dry. Special attention should be given to the dew point temperature because when this temperature is reached and dew forms the drying process of the coatings will cease.
2. Coatings should be allowed to dry thoroughly between coats. Minimum dry time between coats is 4 hours.
3. During extremely hot conditions do not apply coatings, or apply coatings in thinner applications to prevent blistering. Additional coats will be required to achieve specified dry film thickness.
4. The material requirements specified herein are for typical conditions. The number of gallons required may need to be increased to account for uneven application, applicator inefficiencies, surface texture, or other conditions. In all cases minimum dry film thickness must be achieved.
5. Surfaces must always be clean before application of AF-130 Coatings. Care must be taken to insure that on-site manufacturing emissions or extended time intervals after original cleaning do not interfere with any stage of the coating applications. If either condition occurs then cleaning may be required again.
6. Adequate coating thickness is essential to performance. If the applicator is unfamiliar in gauging application rates, we suggest that a controllable area be measured and the specified material be applied. In all cases all minimum specified material must be applied and proper minimum dry film thicknesses must be achieved. Care must be taken to insure that all areas completed including all flashings, roof penetrations, etc. are coated sufficiently to insure a watertight seal.
7. Consult ACRYMAX TECHNOLOGIES if any deviations from published specifications are considered. Unapproved deviations from installation guidelines and specified material requirements may seriously affect the coating system performance, and shall be undertaken at the specifiers, applicators or building owners own risk.
8. Applicator must comply with all applicable local, state, and federal regulations if lead based paint or other hazardous materials are encountered.
9. Roofing is hazardous work and coatings are very slippery when wet. Comply with fall protection rules and regulations.