zinc-thin coated copper

8/18/2019 Zinc-Thin Coated Copper

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Revere FreedomGray ® Z-T Alloy Coated Copper

Revere IndependenceGray® / TCS II / TCS II Satin Z-T Alloy

Coated Stainless Steel

Questions & Answers

Since introducing FreedomGray and Indepen denceGray , Revere has been asked many questions regardingits nature and use. Following, are the most often asked questions and answers. This is provided as a guide toassist you when promoting and marketing FreedomGray and Indepen denc eGray . This information isconsidered true and accurate as of 02/12/15. However, as more information is obtained, answers may bechanged or corrected and additional questions may be added. Neither the questions nor the answers are to beinterpreted as a warranty, recommendation, or endorsement for a particular use or application.

1) What is Revere F REEDOM G RAY ?

F REEDOM G RAY is architectural sheet copper coated both sides with Z-T Allo y TM.

2) What is Revere IndependenceGray?IndependenceGray is architectural 304 stainless steel coated on both sides withZ-T Alloy™

3) What is Z-T Allo y ?

Z-T Allo y is the registered trade name for Revere Copper Product’s patented zinc/tin alloyand method of applying it to copper and stainless steel substrates..

4) How is F REEDOM G RAY and Independ enceGray produced (made)?

The Z-T Alloy is applied by the hot-dip process to architectural sheet copper produced to ASTM B 370 and 304 stainless steel

5) What is the significance of the names F REEDOM G RA Y and Independenc eGray ?The name signifies freedom to design with a durable, environmentally friendly, gray metal.

6) What is the color of F REEDOM G RAY and Independ enceGray ?

F REEDOM G RAY and Independen ceGray are supplied with a micro-embossed surface. Whenexposed to the atmosphere, the Z-T Alloy forms a natural oxide film. In most environments

F REEDOM G RAY and Independenc eGray weathers to an aesthetically pleasing slate graycolor.

7) What is the function of the satin micro-finish on FreedomGray and Independenc eGray ?

The satin finish reduces initial glare and reflectivity of the Z-T Alloy .

8) How thick is the Z-T Allo y on F REEDOM G RAY and Independ enceGray?Minimum thickness is approximately 0.0005”.

9) Can F REEDOM G RAY and Independenc eGray be supplied with the Z-T Allo y on one side only?No it will be applied to both sides

10) Has F REEDOM G RAY , IndependenceGray, and the Z-T Allo y been tested? If so, what were the

results?Z-T Alloy has been tested in salt spray, salt fog, and other accelerated weathering tests. Ithas been exposed to industrial, seacoast, urban, and rural environments. There have beenno failures.


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11) How does F REEDOM G RAY and Independenc eGray differ from lead coated copper?

1) Lead-coated copper ("LCC") coating contains lead; F REEDOM G RAY and IndependenceGray coating does not.

2) Formation of patina on lead and lead coatings is dependent upon sulfur compounds, lackof these compounds can cause unusual weathering; F REEDOM G RAY and

IndependenceGray ’s patina depends upon oxygen.

12) How does F REEDOM G RAY and Independenc eGray differ from sheet zinc (Rheinzink, VM

Zinc)?Zinc cannot be formed at below 40O F (it fractures); the underside of zinc must be vented;zinc is subject to "creep" - F REEDOM G RAY and IndependenceGray can be formed at mostany temperature, installed easily using normal copper forming methods and is resistant tocreep.

12) What applications is F REEDOM G RAY suitable for? All applications that would use copper, except where acid runoff may be a concern (tannicacid leaching form some wood).

14) For what applications are F REEDOM G RAY and Independenc eGray not recommended?Directly under roof run off that may contain harmful chemicals, tannic acid, please consultwith Revere

15) Can gutters, downspouts, and other rainwater goods be made from F REEDOM G RAY and

IndependenceGray ?Yes

16) Can F REEDOM G RAY and Independenc eGray be installed at below freezing temperatures?Yes

17) Can F REEDOM G RAY and Independenc eGray be used in marine environments?Yes please check with Revere if the project is within 1 mile of saltwater

18) What conditions or environments will cause F REEDOM G RAY and Independ enceGray to

weather to a red or orange color as occasionally seen with lead, LCC, and TCS?None - there are no red oxides of tin or zinc.

19) What changes in physical properties can be expected as F REEDOM G RAY and

IndependenceGray weathers?None

20) What substances or materials can affect (corrode) F REEDOM G RAY and Indep endenceGray ?Inorganic acids - although only unsightly stains may result, care should be taken to minimizerun-off from sulfur containing products, overspray of masonry cleaners, etc., ontoF REEDOM G RAY and Independenc eGray

21) Can F REEDOM G RAY and Independenc eGray be formed in the same manner as plain copper,

or lead-coated copper?In general - Yes. As standing water may cause staining (on any of the aforementionedmetals), flat seam roofing, gutters, etc. should be provided with positive drainage - minimum1/8" per foot.

22) What underlayments are suitable for use with F REEDOM G RAY and Independ enceGray ? All commonly available underlayments, i.e., asphalt saturated felt with rosin-sized slip-sheet,


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35) How long does it require for F REEDOM G RAY and Independ enceGray to change color?

Weathering of the Z-T Alloy coating begins immediately upon exposure and varies with localenvironmental conditions. Usually, a mature slate gray patina develops in one to five yearsdepending on the slope of the installation and environment.

36) Should gloves be worn when working with F REEDOM G RAY and Independenc eGray ?

Gloves are not required for health reasons; however, gloves help provide protection fromsharp edges of material, and are therefore suggested.

37 If gloves are not worn, will F REEDOM G RAY and Independenc eGray show fingerprints like

standard copper?Natural metals can show fingerprints if care is not taken to avoid them.

38) Is protective clothing required when working with F REEDOM G RAY and Independ enceGray ?Revere recommends standard protection such as gloves, eye protection, etc. be worn whenforming, soldering, and/or installing any sheet metal. Beyond this, no special clothing orprotection is required when working with F REEDOM G RAY and Independ enceGray .

39) Can F REEDOM G RAY and Independ enceGray be used with other metals?Steps should be taken to prevent a potential reaction with other architectural metals.However, Revere should be contacted about specific metals with respect to nobility andelectro-chemical potential.

40) Is the Z-T Allo y available on other metals and copper alloys?We only coat our copper and stainless steel

41) Can F REEDOM G RAY and Independ enceGray be painted?Yes, we suggest contacting a reputable paint manufacturer for proper selection.

42) What is the oldest project on which F REEDOM G RAY and Indep endenceGray was used? What

is the oldest project that used the Z-T Allo y ?Test sites, including full-scale roof surfaces, since the early 1990’s.

43) Can F REEDOM G RAY and Independenc eGray be formed on portable pan forming machines?Yes some additional over bending may be required with the stainless steel product.

44) Is there an MSDS available for F REEDOM G RA Y and Independenc eGray ?Yes Downloadable from our website.

45) Is F REEDOM G RAY and Independenc eGray produced to an ASTM specification?The Copper and the Stainless Steel substrate’s are produced to ASTM specifications, while

the Z-T Alloy coating is a proprietary process.

46) Is F REEDOM G RAY and IndependenceGray available in coils?Yes

47) What are stock sizes for F REEDOM G RAY AND I NDEPENDENCE G RAY ?FreedomGray: 16-ounce and 20-ounce: 36" by 120" sheets; 20" and 36" coilsIndependenceGray 28, 26, and 24 (.015”, .018”, .024”) gauge in coil and sheet

48) What is the minimum order quantity for F REEDOM G RAY OR I NDEPENDENCE G RA Y ?


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Minimum orders for stock sizes are one case (approximately 1,000 lbs.) or 500 ’ lineal footcoils.

49) Will Revere accept orders for F REEDOM G RAY OR I NDEPENDENCE G RAY in other than stock

sizes or thicknesses?Inquiries for other than stock sizes and thicknesses will be reviewed and determined on anindividual basis.

50) What is the lead-time for non-stock sizes of F REEDOM G RAY ?Lead times for non-stock sizes of F REEDOM G RAY will be according to Revere's publishedschedule.

51) How will F REEDOM G RAY and Independ enceGray be sold?

F REEDOM G RAY and Independenc eGray will be sold through, recognized Revere sheetcopper distributors throughout the United States, Canada, and around the globe.

52) Can Z-T Allo y be applied obtained from other sources on a "toll" basis?No

53) Will Revere "drop-ship" F REEDOM G RA Y and Independenc eGray to job sites?No - Revere will ship only to distributor locations.

54) Can F REEDOM G RA Y and Independenc eGray be combined with other roofing copper for

quantity discounts?No

55) What is the warranty for F REEDOM G RAY and Independenc eGray ?25-year warranty same as other copper products except in coastal applications a 10 yearwarranty applies.

56) Where can I obtain F REEDOM G RAY and Independenc eGray ?

F REEDOM G RAY and Independenc eGray are available from authorized Revere roofing ormetal distributors. For the names of Authorized Distributors, call Customer Support at

(800) 448-1776.

zinc-thin coated copper

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