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Primer for Silicone on porous Substrates

AT101 is a primer used to improve the adhesion of weathertight sealants to porous substrates.


AT101 improves the adhesion of weathertight sealants onto various porous substrates. It is recommended that in order to ensure satisfactory adhesion, a test area is checked prior to proceeding with the complete application.

  • Improved adhesion
  • Maximises performance longevity
  • Works with most porous substrates

Usage Guidelines

  • Ensure substrate is clean dry and free from laitance.

Technical data

Drying Time30 minutes at 23°C & 50% RH
Application of Sealantin all cases, ensure the primer is dry before application of sealant
StorageStore in shaded dry conditions between +5°C and +25°C
Shelf Life18 months when stored as recommended in original unopened containers
Primer consumption calculator

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