A polyaspartic wall waterproofing and weather protection system for prepared concrete, plastered and mineral exterior wall surfaces exposed to wind-driven rain, UV, temperature change and outdoor weathering. It helps seal porous wall substrates, build continuous protective coats and improve surface durability, color stability and long-term facade maintenance.
Concrete / mineral wall primer sealing + first polyaspartic wall protection coat + exposed weather-resistant topcoat
Wall substrate sealing and adhesion support for prepared concrete, plastered or mineral surfaces
First continuous polyaspartic wall protection coat over the primed wall surface
Exposed polyaspartic topcoat for UV, rain, color and weather protection
The system separates wall substrate sealing, continuous wall protection and exposed weather resistance, helping reduce porous-substrate defects, wind-driven rain impact, color aging and long-term exterior wall maintenance risks.
BW8009 seals prepared concrete, plastered or mineral wall surfaces, reduces uneven absorption and supports adhesion before BW0-8029 wall protection coats are applied. It helps create a more stable base on porous or dusty mineral wall substrates after proper surface preparation.
The first BW0-8029 coat forms a continuous polyaspartic protective layer over the BW8009-primed wall surface. It helps improve wall surface continuity around minor surface defects, hairline crack areas, exterior corners, window frame edges, pipe penetrations and other detail zones after proper repair and preparation.
The exposed BW0-8029 topcoat helps protect the wall surface against UV exposure, wind-driven rain, outdoor weathering, color fading, surface aging, dust retention and long-term facade maintenance concerns.
Exterior wall problems often start from small weak points: porous or powdering mineral surfaces, wind-driven rain, hairline cracks, exterior corners, window frame edges, pipe penetrations, wall-to-roof transitions, weak plaster layers, chalking old coating, peeling risk, color aging, water staining and dust or pollution exposure. The BW8009 + BW0-8029 wall system helps reduce these risks through a controlled route from wall preparation to primer sealing, protective coating build-up and exposed weather-resistant finish.
Wall protection starts with a solid, clean, dry and stable substrate. Remove loose plaster, floating dust, oil, chalking layers, weak old coating and contaminated areas, then review wall strength, surface dryness, old coating stability, porosity, texture and adhesion readiness before primer application.
Check hairline cracks, exterior corners, window frame edges, pipe penetrations, wall-to-roof transitions, facade junctions and other detail areas before coating. Active structural cracks, wide cracks, moving joints, hollow wall areas and deep leakage paths should be repaired or treated with a separate detail design before the wall protection coats are applied.
Apply BW8009 to seal the prepared concrete, plastered or mineral wall surface and support adhesion for the following BW0-8029 coats. Primer coverage, absorption uniformity and recoat condition should be controlled so the wall protection coats are applied over a stable prepared surface.
Apply BW0-8029 by brush, roller or compatible spray method to build the continuous wall protection coating over the primed surface. Multiple coats may be required depending on wall texture, exposure level, color requirement and project specification.
Apply the final BW0-8029 exposed topcoat to improve outdoor weather resistance, surface durability, color protection and maintainability. The finished surface should be reviewed for continuity, appearance, missed areas and detail coverage before handover.
System-relevant values for prepared exterior wall protection: substrate adhesion, rain resistance, UV aging resistance and surface durability.
| Item | Test standard / reference | Result |
|---|---|---|
| Density g/cm³ | GB/T 6750-2007 | 1.02 |
| Solid content | Product Information | >60% / >60% |
| Viscosity (cps) @ 25°C | Product Information | Part A 220 / Part B 260 |
| Concrete / mineral adhesion | ASTM D-3359 | 3.5 MPa or substrate broken |
| Temperature variation resistance | GB/9278-1988 | -40 to +180°C, 24 h: normal |
| Salt resistance | GB / T 9274-1988 reference | 50 g/L, 30 d: no corrosion, blistering or peeling |
| Alkali resistance | GB / T 9274-1988 reference | 50% NaOH, 30 d: no corrosion, blistering or peeling |
| Item | Test standard / reference | Result |
|---|---|---|
| Elongation | ASTM D-412 | 200% |
| Tensile strength | ASTM D-412 | 20 MPa |
| Abrasion resistance | HG / T 3831-2006 | 5 mg |
| Accelerated aging | GB / T 14522-1993, 1000 h | Loss of light <1; chalking <1 |
| Salt spray resistance | Chemical Resistance | 1500 h, no corrosion, blistering or peeling |
| Water resistance | Chemical Resistance | 48 h, no bubbles, wrinkles, color change or peeling |
The above values are selected from the current product-detail Product Information, Physical Properties and Chemical Resistance tables. Final film thickness and suitability should be confirmed according to substrate condition, service exposure, detail design, project specification and the latest approved technical data sheet.
Before handover, key inspection should focus on wall substrate readiness, crack and detail treatment, BW8009 primer coverage, BW0-8029 coat continuity and final exposed surface consistency.
Confirm the prepared concrete, plastered or mineral wall surface before primer application.
Review primer sealing and detail readiness before BW0-8029 wall coats.
Check the BW0-8029 wall protection build-up before service.
Use these checks to judge whether the BW8009 + BW0-8029 wall protection system is suitable before final specification.
For concrete, plastered or mineral wall surfaces that can be cleaned, dried, repaired and prepared before primer application.
For exposed exterior walls where UV, temperature change, rain, color aging and long-term facade maintenance need surface protection.
For walls exposed to wind-driven rain, water staining or rain erosion after the substrate is confirmed sound, dry and clean.
For porous or absorptive mineral walls where BW8009 primer sealing is needed to reduce uneven absorption before BW0-8029 coats.
For window frame edges, pipe penetrations, exterior corners, wall-to-roof transitions and facade junctions where detail continuity should be reviewed before coating.
Do not apply this system over wet, powdering, hollow, weak, contaminated or unstable wall surfaces. Confirm wall substrate condition, moisture, old coating adhesion, hairline cracks, detail areas, exposure level, target DFT, color requirement and inspection standard before ordering. Structural cracks, active cracks, moving joints, deep leakage paths or negative-side water pressure require separate repair or detail design.
Common questions about using BW8009 and BW0-8029 coats for wall waterproofing support and exterior weather protection.
