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Installation Guide: ARS-2-A25

PARTIALLY REINFORCED COATING SYSTEM

Asphalt Roofs 

 

1. DESCRIPTION
The Acrymax ARS-2-A25 Elastomeric Roof  System is a partially reinforced fluid applied  elastomeric roof system used for protection,  maintenance and weatherproofing of smooth or  granulated surface asphalt substrates including  existing BUR and modified bitumen roofs. Roof  penetrations, flashings, and other critical areas  of the roof are reinforced and then the roof is  covered with a high performance elastomeric  coating system. The ARS-2-A25 System once  applied provides the basis for a sustainable and  easily maintainable system. The long-term cost  benefits offered by this state-of-the-art  technology include lower life cycle costs and  energy savings. Acrymax coatings are VOC  compliant waterborne materials that provide an  environmentally responsible method for roofing  and weatherproofing applications. Average  membrane thickness of the ARS-2-A25 System  is 25 mils on the un-reinforced areas and 45  mils on the reinforced areas. 

 


 

2. MATERIALS
The materials used in the ARS-2-A25 System may include but not be limited to:

• AF-130BC Basecoat

• AF-130 Finish Coat

• Poly-1 Polyester Reinforcement Fabric

• AF-127 Acrylic Primer

• AF-9000 Modified Asphalt Emulsion

• AF-315 Fibrated Acrylic

 


 

3. APPLICATION EQUIPMENT
Acrymax AF-130 roof 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 should be capable of 2500 – 3000  psi with output of 2 - 2.5 gallons per minute. A  “Reverse-a-Clean” tip with tip size .027 to .041.  Application by roller or brush may require  additional coats to achieve uniform membrane  thickness, but material requirements will  generally remain the same. Rollers should be  medium or long nap. (3/4” recommended) 

 


 

4. INSTALLATION
Installation of the ARS-2-A25 System is accomplished in five (5) basic steps:

(a) Preparation

(b) Repair

(c) Installation of Reinforcement

(d) Application of Coatings

(e) Inspection

 

(a) Preparation

Acrymax AF-130 roof coatings must have a  clean surface to adhere to. Proper surface  preparation is the key to successful  applications. All dirt, debris, oils etc. must be  removed by the most effective method possible.  High-pressure water (2500 psi) is the  recommended method. Vacuuming, stiff  brooming, and low-pressure water washing can  also 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 roof and  care must be taken to make sure that water  does not intrude into the building or the existing  roofing system. If pressure washing is not  possible then an appropriate primer should be  used (consult Acrymax). Priming is not a  substitute for proper cleaning. Roofs that have  previously been coated with aluminized asphalt  coatings and heavily oxidized roofs must be vigorously prepared to provide a clean surface  and then primed with AF-127 or an asphalt  primer. AF-9000 Modified Asphalt Emulsion  should be used on heavily alligatored roof areas  as a filler coat prior to application of the ARS-2A25  system. Application rates for AF-9000 can  range from 1-6 gallons per 100 square feet  depending on severity of alligatoring. Prime  granulated surfaces with AF-127 Primer at the  rate of 1 gallon per 250 square feet.  

 

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. 

 

(b) Repair

All necessary roof repairs must be done  according to good construction practices.  Acrymax roof coatings should not be applied  over roofing, insulation, or related materials that  are saturated with moisture. For applications  over existing roof systems a complete  inspection must be made, including core cuts  and moisture detection scans where necessary,  to determine if and where excess moisture  exists. Any wet insulation must be replaced with  new materials of equal thickness and the area  repaired to bring level with existing roof surface.  Acrymax AF-130BC should be used with Poly-1  polyester reinforcement fabric in appropriate  widths to repair and reinforce all defective areas  in the existing roof surface. Acrymax AF-315  Fibrated Acrylic or Asphalt roof cement should  be used to fill all cracks as necessary.  

 

(c) Installation of Reinforcement

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.   

 

All flashings, roof penetrations, transitions, and  other detail areas requiring reinforcement should be completed with Poly-1 and Acrymax  AF-130BC in the following manner:  

 

1. Apply liberal coat of AF-130BC to area to be reinforced.

2. Immediately embed the appropriate width Poly-1 polyester fabric into this wet coat of AF-130BC. Apply without wrinkles, air pockets, or fishmouths. Poly-1 Fabric is available in 4”, 6”, 12”, 18”, and 40” widths.

3. Apply additional Acrymax AF-130BC to completely saturate fabric. Total AF-130BC used to embed and saturate Poly-1 should be 3 gallons per 100 square feet of reinforced area.

 

Estimated Acrymax AF-130BC per 100 linear feet required to install Poly-1 Fabric Reinforcement:
Fabric Width 4" 6" 12" 18" 40"  
Gallons 1.0  1.5  3.0  4.5  10.0   

 

Note: The estimated material requirements are for coating materials that are required for the tack coat that is used to embed Poly-1 and for the saturating coat that is applied after reinforcement has been installed. Areas that are reinforced must 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.

 

(d) Application of Coatings

Apply Acrymax elastomeric roof coatings to produce monolithic roof membrane with specified dry film thickness. Contrasting colors should be used for each coat. White is the suggested finish color for energy efficiency and reduced thermal stress on the roof. Dust should be blown off of surfaces to be coated with compressed air or blowers immediately before application of coatings.

1. Basecoat – Apply 1st coat of elastomeric coating using Acrymax AF-130BC applied in a uniform manner at the minimum application rate of 1.25 gallons per 100 square feet per coat. Allow to dry.

2. Intermediate Coat – Apply 2nd coat of elastomeric coating using Acrymax AF-130 applied in a uniform manner at the minimum application rate of 1.25 gallons per 100 square feet. Allow to dry.

3. Finish Coat – Apply 3rd coat of elastomeric coating using Acrymax AF-130XT applied in a uniform manner at the minimum application 
rate of 1.5 gallons per 100 square feet. 

Notes: Each coat should be applied in a perpendicular direction to the previous coat. During application of the coating system special attention should be given to flashings and any other critical areas so as to build required membrane thickness. When applied by roller additional coats may be necessary to achieve uniform film thickness. Total material requirements will stay the same. All specified material must be applied and minimum membrane thickness achieved.

 

(e) Inspection

Inspect entire roof area and touch-up deficient  areas with additional Acrymax AF-130 as  necessary to insure complete and uniform  coverage. Special attention should be given to  critical areas of roof such as flashings, repaired  areas, roof penetrations, etc.

  


 

5. LIMITATIONS
These are general guidelines for application of  the Acrymax ARS-2-A25 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 before coating is  dry. 

 


 

6. WARRANTY
Acrymax offers limited material warranties for  the ARS-2-A25 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 are applied by an Acrymax  approved applicator may qualify for system  warranties covering labor and material. (Consult  Acrymax) 

 

INSTALLATION NOTES

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 specifier’s, applicator’s or building owner’s 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.

 
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