Primers-Underlays

The fast-sealing POSTAR 20 subfloor by Atlas is a high-quality floor underlay, ideal for use beneath ceramic and stone tiles, PVC carpets, and panels. It offers excellent performance and resistance to moisture and frost, making it suitable for areas exposed to permanent moisture. The product features limited linear shrinkage and a fast drying time, allowing for rapid continuation of construction work. Its working consistency ensures easy spreading and troweling, resulting in a flat surface.

Advantages:

• Fast sealing
• Moisture residue below 3 CM after 2 days from application, speeding up the construction process
• Waterproof and frost resistant
• Ideal for areas exposed to permanent moisture and changing weather conditions
• Limited linear shrinkage reduces the risk of cracking and deformation
• Dense plasticity, easy to spread, trowel, and ensure a uniform surface

Specifications:

• Brand: Atlas
• Packaging: 25 kg
• Type: Cement
• Series: Postar 20
• Application thickness: 10–80 mm
• Minimum application thickness: 10 mm
• Maximum application thickness: 80 mm
• Drying time: 24 h
• Compressive strength: 20 N/mm²
• Flexural strength: 40 N/mm²
• Suitable for floor heating