Details: Cast-in-Place Penetrations Applications of flashing at cast-in-place penetrations (such as pipes or vents) are similar for both vertical and horizontal waterproofing applications. By Blackpool Roofing|2011-09-13T17:35:00+01:00September 13th, 2011|Emergency Roofing Maintenance, Industrial Roofing, Roofers, Roofing, Roofing Industry News|Comments Off on Details: Cast-in-Place Penetrations Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInTumblrPinterestVkEmail