[Greenbuilding] : EPDM roof coating
nick pine
nick at early.com
Wed Jun 19 14:12:03 CDT 2013
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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