Component polysulfide sealant specific construction methods

1, the sealing surface treatment:
Before construction of the former road after construction debris clean up residual waste , barrier seals reuse blower or vacuum floating ash handle clean , if the base surface moist after application of a blowtorch to dry again with a wire brush to remove after baking fall cement debris and dust. To remove the sticky surface oil, dirt and other debris and plastic attachments ( two-component polysulfide sealant stick plastic and oil, available portable cutting machine , grinding wheel, steel brushes and other tools work ) , clean and with a hair dryer blowing debris so strong adhesive surfaces exposed structural layer , the surface must be guaranteed completely dry joints , clean, no cream. All surface dirt and cement slurry must be cleared brush handle clean . Must be absolutely guaranteed to be sticky surface is dry , flat, in order to prevent adhesion failure . Metal surface rust and paint protection also need to be removed. If the structure quit, available blowtorch drying.
2 , before construction on both sides of the gap 10mm at 50mm wide masking tape affixed to prevent the construction of the structures of excess polysulfide rubber surfaces soiled.
3 , filling Backing Material:
According to the design requirements, the joints filled with backing material , generally designed to require filling polyethylene foam board , this seams on board our factory production, specialized and two-component polysulfide sealant supporting the use of buildings .
4 , brushing primer solution: design requires the use primer solution works , or long-term flooding parts of the vehicle seals , to brushing primer liquid surface was sticky , dry film ( primer reprovision ) .