AT101 Primer for Silicone on Porous Substrates

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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. Depth of Joint (mm) / Coverage on Slightly Porous Substrates (m)/ Coverage on Highly Porous Substrates (m) 3-5 /700/ 250 6-10 / 350 / 130 12-15 / 190 / 70

Approximate volume used per 500 ml can

Safety data sheet must be read and understood before use. Highly flammable - keep away from open flames and other ignition sources.

  • Improved Adhesion
  • Maximises performance longevity
  • Works with most porous substrates
MSDS_T-I-AT101_(v15-GB-EN).pdf Safety Data Sheets
AT101 Technical Data Sheet (en-GB).pdf TDS