The following is a summary of the prevalent methods of installation as described in the Tile Roofing Institute/FRSA installation guide:

System #1

System #1 is the tile roofing industry's most common method of application nationwide. System 1 utilizes all types of underlayment from type 30 dry felt to self adhered SBS modifieds.
System Summary: This method utilizes the roof tile and functional flashings as the primary method of shedding water. The underlayment in a System 1 application serves as a secondary water barrier.

System #2

System #2 is a hybrid application method which combines the tried and true "hot-mopped" two-ply underlayment with the security of mechanical fasteners (usually screws). This system requires the use of plastic cement around the penetrations.
System Summary: This method utilizes a combination of the underlayment, plastic cement and the roof tile to shed water as the flashing details are "non-functional", thereby allowing the flow of water underneath the roof tiles.

System #4A

System #4A combines the water shedding advantages of System #1 with the attachment strength of urethane foam adhesive. System #4 is commonly used on upper end custom homes, reroofs and commercial applications in which wind resistance are of paramount importance.
System Summary: This method is the most hurricane resistant tiel roofing system and is widely regarded to be "the tile ultimate roof system".

Active Customers

Active customers of Roof Component Solutions may obtain the most recent tile roofing installation manual at no charge. To purchase a manual, please click the following link: http://tileroofing.org/content_ektid860.aspx