|
|
|
Roofing FAQ's
Should joints and transitions be soldered with my
copper roof systems?
Definitely. While
some proclaim it "Old World" style, soldering joints and transitions with
formed locks is still the best way to install your roof. Even the best
tube sealants and tape caulks have a limited life span and should be avoided
where copper or zinc roofing is concerned.
Does copper react with other metals?
Yes, copper can be extremely corrosive to steel, aluminum and other metals.
Stainless steel and copper get along perfectly. It is important to
remember that metal roofs or accessories can shed water onto copper, but
copper cannot shed water onto other metals (Except Stainless Steel) without
corrosive effects on the metal. Aluminum and mild steel, galvanized,
and Galvalume will quickly deteriorate with contact with copper.
Does Copper last longer than traditional
roofs?
Copper is a lifetime product with
roofs nearly a 1000 years old in use.
What is Solar Reflectance Index (SRI)?
The
Solar Reflectance Index is a measure of the constructed surface’s ability to
reflect solar heat, as shown by a small temperature rise. It is defined so
that a standard black (reflectance 0.05, emittance 0.09) is 0 and a standard
white (reflectance 0.80, emittance 0.90) is 100. SRI combines reflectance
and emittance into one number.
What is
Solar Reflectivity (SR)?
Reflectivity is the
deflection of solar energy from a surface. Steep slope roofs have proven to
perform better than low slope roofs, 2:12 or less. The greater the amount
of solar energy reflected from a surface, the less energy will be required
to keep it cool.
What is Emissivity?
Emissivity is the amount of heat that is
radiated from a surface. The greater the emissivity, the greater the
ability of a surface to cool itself through radiative heat loss, which
ultimately reduces energy consumption.
How do you measure the actual (aged) emissivity and
reflectivity?
There are standard ASTM
procedures for measuring both these properties. These procedures include
ASTM C1371 and E408 for emissivity and ASTM E903 and E1918 for
reflectivity. The Energy Star program specifically requires aged
reflectivity values tested after 3 years.
 |
 |
 |
 |
 |
Standing Seam
Roofing |
Specialty Roofing |
Green Building |
Making the investment |
FAQ's |
Contact Aegis Copper & Fabrication for more info
|
|
|
|