Hi Ardex, will the STB tape adhere to polyurethane already applied? We have used a universal tile-over shower tray and have poly where the villa board meets the tray as per the installation guidelines. By the way thanks for the great technical sheet on the Universal Shower Trays!
If the polyurethane is a paintable one then the STB would stick to it. The concern here is whether or not the polyurethane exhibits plasticiser migration. This is the act of plasticisers within the polyurethane slowly drifting out of the polyurethane throughout the life of the sealant. This can lead to softening of membrane coatings applied on top of the sealant. STB tape will help protect the membrane from directly touching the polyurethane. You're welcome re: the technical datasheets!!
Yes, where the bond breaker tape is applied, the need for a sealant is eliminated. This will be a substitution for the traditional sealant to act as the system’s bondbreaker. Thank you for the question and for watching.
A new rule for a water stop angle to run up the wall 600mm, when the shower glass is close to a doorway.
Hi Ardex, will the STB tape adhere to polyurethane already applied? We have used a universal tile-over shower tray and have poly where the villa board meets the tray as per the installation guidelines. By the way thanks for the great technical sheet on the Universal Shower Trays!
If the polyurethane is a paintable one then the STB would stick to it. The concern here is whether or not the polyurethane exhibits plasticiser migration. This is the act of plasticisers within the polyurethane slowly drifting out of the polyurethane throughout the life of the sealant. This can lead to softening of membrane coatings applied on top of the sealant. STB tape will help protect the membrane from directly touching the polyurethane. You're welcome re: the technical datasheets!!
If bond-breaker tape is utilized, it eliminates the necessity of applying a flexible sealant or fillet??
Yes, where the bond breaker tape is applied, the need for a sealant is eliminated. This will be a substitution for the traditional sealant to act as the system’s bondbreaker. Thank you for the question and for watching.
AS 3740 allows for the use of proprietary transition tapes in place of a bond breaker. STB tape falls into this category.