
PM-21 Repair Primer
Penetrates deeply for lasting adhesion, and substrate protection ZoCoo PM-21 is a two-component, high-performance repair primer formulated with premium expoxy resin and a Cardanol-modified phenolic amine curing agent. It offers strong substrate bonding, fast drying, chemical and corrosion on resistance, and low VOC performance – ideal for strengthening and sealing concrete and other porous surfaces.

Why it stands out
PM-21 sets the new benchmark in the market as a high-performance two-component reinforcement penetrating primer designed for both interior and exterior applications. It delivers a unique combination of fast curing time, strong substrate adhesion, and deep surface penetration. It effectively seals porous surfaces while resisting peeling, efflorescence, and chemical damage, making it ideal as a first primer on a wide range of materials.
- Strong adhesion penetrates deeply for lasting durability
- Fast curing minimises downtime and speeds projects.
- Resistant to chemicals, corrosion, and harsh weather.
- Low VOC and odor ensure safe, eco-friendly use.
- Seals moisture and prevents efflorescence damage.
- Easy to apply with reliable, professional results.
Where can you use it
First Primer Interior and Exterior
- Floors (as an alkali-resistant primer)
- Walls
Sealing Primer for Exterior
- Walls
- Concrete (ie. Bridges)
What Surfaces
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Quantity
It covers 0.3 – 5kg/m² per coat, depending on surface conditions. Highly porous surfaces require a second coat.
POT LIFE: Approx. 30 minutes depends on temperature
CURING TIME: 1 hours (touch dry), 7 days (full cure)
Installation Process
- PM-21 must be thoroughly mixed A:B = 1:2 (weight ratio) using a slow speed mixer or hand taking care to avoid introducing too much air into the mix during mixing. Mixing should continue for about 2 minutes or until a homogeneous mix is achieved.
- Apply by roller or brush. Increase the coverage rate or apply a second coat if necessary.
- Before construction, ensure that the substrates surface must be clean, dry, no oil stain, n impurities. Cracks need to be sealed.
Product Details
Basic Information
- SKU: PM-21
- Category: Polyaspartic Polyurea Waterproofing
- Brand: ZOCOO
Specifications
- 0
- Unit: Each
- Status: Active
PM-21 Repair Primer | Know· Apply· Trust
Product Information
- SKU: PM-21
- Category: Polyaspartic Polyurea Waterproofing
- Status: Active
Additional Details
- Default Location: Rockys Warehouse
Technical Details
Mix ratio (by weight):
A:B = 1:2
Surface dry time:
≤ 5 hours
Ultimate dry time:
≤ 24 hours
Recoat time:
2 hours
Coverage and Packaging
Usage:
Walls: 0.3L/m²; Floors: 0.5L/m²
Coats req.
Walls: 1 - 2 coats: Floors: 2 coats
15L Coverage
Walls: 50m²; Floors: 30m²
Storage and Shelf Life
Stored properly in undamaged and original sealed package in dry and cool temperature range +5°C to +35°C, protect from direct sunlight and frost.
Shelf life: 12 months from date of production.
Tools & Cleaning
Brush, Roller or Electric Sprayer. Clean tools and equipment using Methyl Ethyl Ketone (Buttanone) immediately after use
Application Conditions
Temp. Range: 7°C to 35°C. Humidity: Below 90%. Note: Ensure sufficient airflow.