At Canada Metal, we provide materials for various protective uses. Our main areas of focus include:
Lead sheet has a long established reputation as a quality roofing and waterproofing material
Thanks to its malleability, it is commonly used for flashings, weather-stripping and window hoods on roofs. It can be easily dressed to fit multi-curved contours and can be formed on site into the shapes needed to provide architectural flexibility. Considered one of the most durable metals, it provides resistance to corrosion in the harshest of atmospheres. Its soft, silvery grey finish makes it color compatible with concrete, brick and glass.
Lead membranes and pans provide an impermeable moisture barrier which will last as long as the most permanent building. As a lining for pools, plant boxes, fountains, shower stalls and shower rooms, commercial and institutional kitchen floors, sheet lead provides waterproofing of the highest quality.
|Applications||Recommended thickness (lb/sq. ft.)|
|Flashings||3 or 5|
|Guttering||3 or 5|
|Coverings for door and window hoods||4|
Sheet lead (ASTM B 29 Chem Lead) Rolls – 4′ X 20
Thickness Range of Sheet Lead
|Sheet Weight||Sheet Weight|
Lead is the material of choice in any design for X-ray or gamma radiation shielding. When other materials are considered, “comparisons are usually expressed in terms of lead because it represents the best practical gamma shield material for most applications.” (Quoted from AEC’s authoritative “Reactor Shielding Design Manual”). It provides maximum protection with a minimum thickness therefore saving weight and space. Rolled lead sheet, 99.99% pure is recommended.
Lead’s high corrosion resistance has established it as the standard material for the linings of tanks, vats, agitators and similar types of equipment, in chemical, plating and industrial plants. Sheets of lead, being malleable and ductile, make field fabrication easy. It can be readily shaped to conform to the interiors and exteriors of chemical equipment.
The table below lists some of the chemicals resisted by lead. One of its principal uses has been to resist sulfuric acid. At room temperature, the metal is not attacked by up to 85% concentrated sulfuric acid under quiescent conditions. It has also been very successful in the containment and handling of phosphoric and hydrofluoric acids and for handling sulphite solutions in the paper industry.
Most importantly, sheet lead’s relatively low initial cost and high salvage value make it very economical.
Chemical lead has excellent corrosion resistance to many chemicals, both organic and inorganic
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