OTTO Primer 1105 – Viscous mineral primer for optimal adhesion

OTTO Primer 1105 is a high-quality, solvent-based mineral primer for improving adhesion on absorbent and mineral substrates. Thanks to its strongly film-forming action, it is ideal for sealing off alkaline substrates and preparing various materials for sealants, PU foam and coatings. With its short flash-off time, the primer enables fast, efficient further processing on site or in the workshop.

The primer was developed specifically to significantly improve the adhesion of OTTO acrylic sealants to mineral materials such as concrete, render, aerated concrete, fibre cement and gypsum. It is also suitable for untreated wood, glazed surfaces, metallic substrates such as anodised aluminium and selected plastics such as PVC.

Areas of application

• Sealing off alkaline substrates
• Improving the adhesion of OTTO acrylic sealants on mineral substrates
• Suitable for concrete, render, aerated concrete, fibre cement and gypsum
• Adhesion improvement on untreated wood and glazed surfaces
• Application on metallic substrates such as anodised aluminium
• Suitable for selected plastics such as PVC

Product properties

• Viscous, solvent-based mineral primer
• Strongly film-forming for reliable substrate sealing
• Improves adhesion on absorbent and mineral materials
• Short flash-off time – at least 30 minutes
• Maximum further-processing time: 3 hours
• Ideal for professional construction and sealing work

Advantages of OTTO Primer 1105

With OTTO Primer 1105 you get a reliable solution for preparing demanding substrates. The special formulation creates a particularly strong adhesion bridge and reduces the risk of adhesion problems with sealants or PU foam. Especially on highly absorbent or alkaline substrates, the primer ensures a secure, permanent bond.

Technical notes

• Flash-off time: at least 30 minutes
• Maximum flash-off time: 3 hours
• Substrate must be clean, dry and load-bearing
• Suitable for mineral and absorbent substrates