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Installation Guide: ARS-2-C25

PARTIALLY REINFORCED COATING SYSTEM

Concrete Roofs

 

1. DESCRIPTION
The Acrymax ARS-2-C25 Elastomeric Roof  System is a partially reinforced fluid applied  elastomeric roof system for protection,  maintenance and weatherproofing of concrete  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 to provide a  weatherproof, monolithic roof covering with  superior weatherability and durability. The  ARS-2-C25 system once applied provides the  basis for a sustainable and easily maintainable  roof 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 provided by the  ARS-2-C25 System is 25 mils on the unreinforced  areas and 45 mils on the reinforced  areas. 

 


 

2. MATERIALS
The materials used in the ARS-2-C25 System  may include but not be limited to:

• AF-130BC Basecoat

• AF-130 Finish-coat 

• Poly-1 Reinforcement Fabric 

• AF-100 Sealer-Primer

• AF-315 Fibrated Acrylic

• AF-136 Patching Compound 

 


 

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-C25 System is  accomplished in six (6) basic steps: 

(a) Preparation

(b) Repair

(c) Priming 

(d) Installation of Reinforcement

(e) Application of Coatings

(f) Inspection

 

(a) Preparation

Acrymax AF-130 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 minimum) is the  preferred method. Vacuuming, stiff brooming,  and low-pressure water washing can also be  used. High-pressure water washing should be  done at a pressure suitable to remove  embedded dirt and contaminants without  damaging the substrate that is being cleaned  and care must be taken to make sure that water does not intrude into the building. Cleaner such  as TSP (or biodegradable alternative) should be  used as necessary. All residues must be  thoroughly rinsed off. 

 

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 repairs must be done according  to good construction practices. Unsound areas  including spalled or pitted areas must be  repaired and made flush with the surrounding  areas. Concrete repairs should be done using  concrete that is modified with admixtures  containing acrylic resins. Any concrete repairs  must be allowed to cure before application of  Acrymax coatings. New concrete should  generally be allowed to cure for 28 days before  coating. Consult Acrymax. Acrymax AF-130BC  should be used with Poly-1 reinforcement fabric  in appropriate widths to repair and reinforce  cracks and other defective areas in the existing  roof surface. Acrymax AF-136 Patching  Compound, AF-315 Fibrated Acryllc, Modified  Concrete Patching Materials, or urethane  sealant should be used to fill all cracks as  necessary. 

 

(c) Priming 

Prime concrete surfaces with AF-100 prior to  application of Acrymax coating system. Primer  application rates may vary depending on the  porosity of the concrete. Application rates  generally will be 200-250 square feet per  gallon. Porous surfaces may require application  at rate of 150 – 200 square feet per gallon.  Previously painted or coated surfaces usually  do not require primer, however any existing  coatings left remaining on the roof must be in  good condition and well adhered. Adhesion test  should be done to verify adequate adhesion of  Acrymax coatings to any existing coatings left  remaining on roof surface. 

 

(d) Installation of Reinforcement

Installation of Reinforcement  Before application of roof coating system 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 roof coating system. Special attention  should be given to insure complete and  adequate coverage at these critical areas. 

 

(e) Application of Coatings

Apply Acrymax Elastomeric Membrane using  the appropriate AF-130 coatings in the color  desired. 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 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 1.5 gallons per 100  square feet. Allow to dry. 

2. Finish Coat – Apply 2nd coat of elastomeric  coating using Acrymax AF-130 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. 

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.

 

(f) 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, ie: details, roof  penetrations, etc.  


 

5. LIMITATIONS
These are general guidelines for application of  the Acrymax ARS-2-C25 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.  These are general guidelines for application of the Acrymax ARS-2-A30XT 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-C25 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) 

 

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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