Walgreens Home › Forums › Sealcoating Materials › Walgreens This topic has 1 reply, 2 voices, and was last updated 14 years, 2 months ago by Harry Carter, Gem Seal. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts August 20, 2010 at 1:59 am #5501 AnonymousInactive Anyone have any idea what they use on their parking lots? They look a darker color black than the sealmaster coal tar that I use on driveways. August 28, 2010 at 12:54 am #6138 Harry Carter, Gem SealParticipant The contractors I have talked with in the South are using a standard coal tar emulsion. Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In