preformed roofing and siding Flashcards
sheet metal roofing:
min slope
3:12
sheet metal roofing:
pros/cons
pro: durable, attractive, conform to wide variety of roof shapes.
con: $, skilled install.
sheet metal roofing:
standing seams
typ parallel to slope, and crimped tight.
designed to expand
sheet metal roofing:
flat seams
connect two pieces along the slope,
made perpendicular to standing seams, soldered.
sheet metal roofing:
installe over
asphalt roofing felt
on top of wood, or nailable concrete decking.
sheet metal roofing:
continuous cleats used at
eaves, rakes (gable ends), and flashing.
sheet metal roofing:
held to sheathing/decking w
w metal cleats attached and spaces 12” oc.
sheet metal roofing:
metals
copper, galvanized iron, aluminum, terneplate.
terneplate:
steel sheet coated w lead and tin.
terneplate req resin-sized paper underlay bc
asphalt can react w tin.
stainless steel sheet metal roofing:
pros/cons
$, but very durable and maintenance free.
copper steel sheet metal roofing:
pros/cons
pro: long life, attractive green patina.
also wide variety of necessary roofing accessories made in copper.
shaped metal faces w insulation,
self supporting, span intermediate supports.
preformed roof and wall panels:
preformed roof and wall panels:
roof panels span ______,
wall panels span ______.
purlins,
horizontal girts,
preformed roof and wall panels:
most simple, overlapping edges.
corrugated panels
