Flashing Materials Peoria IL
(309) 676-3333
Peoria, IL
309-688-9700
Peoria, IL
309-694-3600
East Peoria, IL
309 694-0774
East Peoria, IL
309-699-9422
Creve Coeur, IL
(309) 699-3959
East Peoria, IL
(309) 699-3959
East Peoria, IL
(309) 694-3465
East Peoria, IL
Flashing Materials
Source: Masonry Construction
Publication date: October 1, 1988
By Walter Laska
Three types of flashing are available: sheet metals, plastics, or a combination of materials.
SHEET METALS
Not all sheet metal flashings are suitable for masonry construction. Aluminum and lead are highly susceptible to corrosion when in contact with wet mortar. They should not be used in masonry walls. Metals galvanized with zinc coatings can be used in masonry construction, but are not highly recommended. Copper, on the other hand, is an excellent flashing material for masonry. It is moderately priced, a superb moisture barrier, and resists the alkalies in fresh mortar. Stainless steel is an excellent flashing material too. It's impervious to moisture and resists chemicals well.
PLASTICS
The most widely used plastics are polyvinyl chlorides (PVC). They are homogeneous, waterproof, impermeable sheets that remain flexible and crack free at -20 degrees Fahrenheit.
COMBINATION MATERIALS
Some of the most common flashing combinations are sheet metals coated with a flexible compound. One type combines glass fiber or a cotton fabric with a bituminous compound that is bonded to a sheet of copper. Another type of flashing consists of textured, waterproofed, creped kraft paper bonded to copper or lead sheet metals with asphalt and reinforced with glass fiber. A third type of combination flashing is made of a metal foil coated with a polyester film that is reinforced with a glass fiber mesh.