Gyproc® Firestop Sealant HP
Description
Gyproc® Firestop Sealant HP is a high performance, fire-rated elastomeric silicone sealant with a low VOC* content, suitable for sealing interior and exterior linear joints and service penetrations in fire rated Gyproc partitions and ceiling systems. It can be used for movement or connection joints where high movement capability is required and helps prevent the passage of flammable gases and smoke on fire rated assemblies. It also stops air leaking through gaps and joints with substrates reducing the amount of noise that can travel between spaces.
Application
Ensure surface is clean, dry and free from oil, grease, dust and frost. After suitable joint preparation and masking, attach the nozzle to cartridge and cut to the required dimension. Apply acrylic sealant into the gap in a continuous operation using positive pressure. A skin will form within a maximum period of 5 minutes as the product cures. Any necessary tooling / spreading of the product should to be completed within 5 minutes of application. If masking tape is used to mark off the area, it has to be removed before skin is formed. The product cures at room temperature from the surface to the centre of the sealant. Primer is generally not required on nonporous surfaces, but may be necessary for optimal sealing of certain porous surfaces. A test placement is always recommended.