Polyurethane (PU) screed flooring has gained significant popularity in industrial and commercial settings due to its exceptional durability, seamless finish, and resistance to chemicals and abrasion. This guide outlines the key steps involved in a successful PU screed application, ensuring a high-quality and long-lasting result.
1. Application Process
Step 1: Surface Preparation
Thorough Cleaning: Clean the floor surface using appropriate methods such as grinding, shot blasting, or scarifying to remove all dirt, grease, old coatings, and contaminants.
Substrate Repair: Repair any cracks, holes, or damage on the surface to ensure a level and stable base for the PU screed.
Moisture Content Verification: Check the substrate moisture content using a specialized moisture meter. Ensure it meets the technical requirements for optimal adhesion (typically ≤4%).
Cut grooving: To prevent cracking and increase the durability of the coating.
Step 2: First Layer Application
Precise Mixing: Mix the three components of Forincrete (resin, hardener, and aggregate), using a specialized mixer. Ensure thorough and consistent mixing to achieve a homogenous mixture.
Apply the primer: Pour the mixed PU screed onto the primed surface and spread it evenly using a trowel or rake to achieve the desired thickness.
Air Removal: Use a spiked roller to remove any air bubbles and ensure a smooth and consistent surface.
Step 5: Top Coat Application
Surface preparation: Slightly grinding the first layer using the grinder and vacuum cleaning.
Top coat application: Repeat the step 02 to apply the top layer of PU screed to reach the desired thickness.
2. Preparation Requirements
Environmental Conditions:
Temperature: Maintain a stable ambient temperature between 10-30°C during the installation process to ensure proper chemical reactions of the PU.
Humidity: Keep humidity levels below 85% to prevent condensation, which can negatively impact adhesion.
Concrete Substrate Requirements:
Cleanliness: Ensure the concrete substrate is free from any oil, grease, dirt, or contaminants.
Roughness: Create a suitable surface roughness by grinding or shot blasting to improve adhesion.
Levelness: The substrate should be relatively level, with no significant holes or unevenness to avoid mortar pooling.
3. Curing Time
Curing Stages:
Initial Curing: After 12-16 hours, the surface will begin to stabilize, but it is crucial to avoid heavy loads during this period.
Light Foot Traffic: After 24-36 hours, light foot traffic or inspections can be permitted.
Full Cure: The PU screed will reach its maximum strength, load-bearing capacity, and chemical resistance after approximately 7 days.
Forintech is a leading manufacturer of polyurethane (PU) grout in China and Southeast Asia. With 23 years of experience in industrial flooring, Forintech is a trusted partner for numerous top-tier brands across various industrial sectors.
Contact Forintech to ensure a successful PU screed application that delivers exceptional durability, performance, and longevity.
🌐 Website: sea.forintech.com
📞 VN: +84 332 966 072 | SG: +65 6018 8058 | MY: +60 010 274 7608
📧 Email: enquiry@forintech.com
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