[Greenbuilding] : EPDM roof coating

[Clarke Olsen]

Thanks, but what I want is a permanent coating which will prolong the life of the roof while reflecting sun light.
GAF product 900 claims to reflect 90%...
Clarke Olsen
clarkeolsendesign.com
373 route 203
Spencertown, NY 12165 
USA
518-392-4640
colsen at taconic.net




On Jun 19, 2013, at 3:12 PM, nick pine wrote:

> Clarke Olsen <colsen at fairpoint.net> writes:
> 
>> Does anyone have a reflective coating for EPDM roofing to recommend?
> 
> Greenhouse whitewash could be sprayed on in June and washed off in September or rained off in November...
> 
> http://www.greenhousemegastore.com/product/lite-stick-shading-compound/shade-paint says
> 
> Lite Stick formulation is designed for seasonal shading and is normally removed by moderate rains. 100% removal is easy with a light brushing. 5 Gallon Pail. [$169, ie 1.2 cent/ft^2, after a 15:1 dilution.]
> 
> Applications Guidelines
> 
> FOR EXTERIOR USE. KOOL RAY can be used over most types of greenhouse exteriors. It can be applied by brush, roller or spray. Spray application is generally the most efficient method of applying KOOL RAY and will usually result in a more uniform shade density and more even wear. Spray tip sizes of .03, .04, .06, .08 and angles of 65 - 85 work well. Consult your supplier of spray equipment for their specific recommendations.
> 
> Dilution Ratios
> 
> KOOL RAY is a super concentrated formula designed to be diluted with water. Standard dilution rate is 1 part KOOL RAY to 15 parts water which will provide approximately 73% shading. Ratios and shading effect can be adjusted according to the grower's particular needs. For a denser shade, several lighter, more diluted coats are recommended over a single, less diluted, heavy coat. A heavy coat can tend to cause "mud cracking" which can lead to eventual flaking and less even wear.
> 
> Coverage
> 
> Coverage will vary according to method of application, applicator, and dilution ratio. Spray will normally provide best coverage of approximately 175 sq. ft. per gallon after dilution. For instance, a 1:15 dilution of 1 gallon of KOOL RAY ULTRA to 15 gallons of water yields a total of 16 gallons of liquid shade. A 1:10 dilution yields a total of 11 gallons of shade. To determine coverage, multiply the diluted gallon amount by 175. Example - 1:15 = 16 gallons x 175 = 2800 sq. ft. 1:10 = 11 gallons x 175 = 1925 sq. ft. Higher dilution rations (less concentrated) result in a lighter shade, lower dilution ratios result in a darker shade.
> 
> Nick 
> 
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