The HP-3 Elastomeric Coating System is a
protective coating system designed for use on
historic or vintage metal or “tin” roofs. It can also
be used on other acceptable smooth surfaces.
Consisting of multiple coats of Acrymax
Elastomeric Coatings the HP-3 system cures to
durable, weatherproof flexible coating system
with superior durability and weatherability. The
HP-3 Specifications will yield a final dry film
thickness of 15-25 mils as described herein
depending on the number of finish coats applied.
In general the performance of elastomeric
coating systems is enhanced when applied to
achieve thicker dry film thickness.
achieve thicker dry film thickness.
Acrymax Coatings are waterborne materials that
are safe and easy to apply. They provide an
environmentally responsible method for roofing
and weatherproofing applications.
Acrymax coatings can be applied by brush,
roller, or airless spray. Airless spray is the most
efficient method of application where proper
conditions and expertise exist. Spray equipment
should be capable of 2500 – 3000 psi with
output of 2 - 2.5 gallons per minute. A
“Reverse-a-Clean” tip with .027 to .041 orifice
size is recommended. Application by roller or
brush may require additional coats to achieve
uniform membrane thickness, but total material
requirements will generally remain the same.
Rollers should be medium or long nap. (3/4”
Installation of the HP-3 System is
accomplished in three (3) basic steps:
(1) Preparation and Priming
(2) Application of Elastomeric Coating System
(1) Preparation and Priming
Acrymax coatings must have a clean surface to
adhere to. Proper surface preparation is critically
important for successful applications of all
coating systems! All dirt, debris, oils, or other
contaminants that can interfere with proper
adhesion of coatings must be removed by the
most effective method possible. High-pressure
water is the recommended method when
appropriate. Vacuuming, stiff brooming, wirebrushing,
and low-pressure water washing also
can be used. When high-pressure 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. Pressures of 2000-2500
psi are commonly used. Cleansers such as
Trisodium Phosphate (TSP) or TSP substitutes
that are suitable for paint preparation can be
used as necessary. When cleansers are used
make sure surfaces are thoroughly rinsed and
no residue remains.
A tape test should be used to determine
acceptability of the 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.
Priming is not a substitute for proper cleaning.
Immediately prior to coating application dust that
may collect on the roof surface should be blown
off with blowers.
“Tin” or metal surfaces:
Any existing coatings on surfaces to be coated
with Acrymax must be removed or if allowed to
remain they must be firmly adhered and in good
condition. Rust and Corrosion: It is very
important to recognize that inadequate
preparation of corroded metal surfaces can lead
to premature failure of the coating system. Rust
must be removed using the most rigorous
method suitable for the particular job. Wire
brushing or sanding or other suitable methods
must be done as necessary. Coatings must not
be applied over loose untreated rust. After rust
has been removed surfaces should be primed
with HP-7000 Rust Inhibitive primer applied
immediately after cleaning to prevent rust from
reoccurring. HP-7000 should be applied at the
rate of 1 gallon per 200-250 square feet. On
roofs that exhibit minor or localized corrosion
HP-7000 can be used to spot prime these areas.
On other roofs HP-7000 may be required on the
entire roof. All bare metal surfaces should be
primed with a HP-7000 prior to applying coating
system. Primer should only be used after
thorough preparation of the surface to be
primed. If severe rust is present it may be
appropriate to use a rust converter on the rusted
areas prior to using rust inhibitive primer.
Consult Preservation Products for complete
information on treatment of rusted metal.
Existing asphalt roofs:
Power washing at 2000-2500 psi is the best
method for removing oxidation and
contaminants from existing asphalt roofs. A low
pressure wash with stiff brooming can be done if
power washing is not possible. If after washing
the surface still has a chalky finish then Acrymax
AF-127 Primer should be used. AF-127 is
applied at the rate of 200 – 250 square feet per
New concrete must be allowed to cure for 30
days. Power wash to remove all contaminants. If
necessary acid etch with muriatic acid as per
manufacturers instructions. After cleaning, prime
surface with Acrymax AF-100 applied at the rate
of 200 – 300 square feet per gallon.
Preparation of other surfaces:
Consult Preservation Products about
preparation of other surfaces.
(4) Application of Coating System
1. Basecoat –
Apply basecoat of Acrymax HP-1000 at the
minimum application rate of 1 gallon per 100
2. Finish Coat – For 15 mil total coating thickness (including
basecoat) apply one finish coat of Acrymax
HP-5000. For a 25 mil coating thickness apply 2
finish coats of Acrymax HP-5000. Minimum
application rate 1 gallon per 100 square feet per
Inspect entire coated area and apply additional Acrymax Coatings as necessary to insure complete and uniform coverage.
These are general guidelines for application of the Acrymax HP-3 System. The material requirements and number of coats may vary depending on the specific job requirements. If unusual conditions exist, contact PRESERVATION PRODUCTS INC. at 610-565-5755. Acrymax Fluid Applied Elastomeric roofing systems must be applied to structurally sound substrates. All surfaces must be clean and dry before application of coating system. 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 or failure of any existing coatings left remaining on surface that is coated does not constitute failure of the Acrymax coating or system. The Acrymax HP-3 System is designed for use on well drained roofs, however, it is 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 application.
Limited material warranties are available for the HP-3 System when all materials are used in strict accordance with all of Acrymax’s and Preservation Products written requirements and recommendations. The sole responsibility under this limited material warranty is for defective material and the only obligation shall be to either replace or refund the purchase price of the materials or part thereof proven to be defective. No statement by anyone may supersede this limited material warranty, except when done in writing by the Technical Service Office of Preservation Products in Media, PA.
1. Users should familiarize themselves with
appropriate Material Safety Data Sheets
(MSDS). MSDS should be available at all
worksites where materials are being used.
2. Materials shall be applied in accordance
with all applicable local, state, and federal
3. A respirator should be used when spraying
Acrymax coatings to protect from overspray
4. When applying reflective white coatings to
a roof, sunglasses should be used to
protect eyes from glare.
5.Handle on pails should only be used to
carry pail when on ground or roof and
should not be used to hoist pail from
ground to roof.
6. Translucent light panels should be clearly
marked and safely protected from foot
7. All work shall be performed in conformance
with the safety procedures outlined in the
current FALL PROTECTION GUIDE as
published by the Occupational Safety and
Health Administration (OSHA).
8. Care should be taken to avoid overhead
powerlines and arcing potential.
9. Comply with all federal, state, and local
regulations regarding lead based paint or
other hazardous materials that may be
encountered. Visit www.epa.gov/lead for information regarding lead paint that may be encountered during renovations.
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 1 to 2 hours, but under adverse conditions dry times can range from 8-12 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.
PRESERVATION PRODUCTS INC
221 Brooke Street
Media, PA 19063