
Company Description:
Now part of GAF Materials Corporation, LL Building Products began in 1938 with the founding
of Leslie Welding Company in Chicago, Illinois, as a small
specialty welding company, also involved in making
miscellaneous metal ventilation products.Our parent company, GAF Materials Corporation, was
founded in 1886 and is currently headquartered in Wayne,
New Jersey, is the most fully integrated roofing
manufacturer in the United Stated with over 3,300
employees in 26 plants across the country.
Now part of GAF Materials Corporation, LL Building Products began in 1938 with the founding
of Leslie Welding Company in Chicago, Illinois, as a small
specialty welding company, also involved in making
miscellaneous metal ventilation products.Our parent company, GAF Materials Corporation, was
founded in 1886 and is currently headquartered in Wayne,
New Jersey, is the most fully integrated roofing
manufacturer in the United Stated with over 3,300
employees in 26 plants across the country.