A hand-applied concrete roof waterproofing system for small and medium roof areas, repair zones and detail-rich roof conditions where plural-component spray equipment is not convenient. It helps build a continuous waterproofing membrane over prepared concrete while improving substrate repair, exposed durability and long-term roof protection.
Concrete primer repair + hand-applied polyurea waterproofing membrane + exposed polyaspartic protective topcoat
Concrete sealing, adhesion support and local repair base
Main flexible hand-applied waterproofing membrane
UV-resistant exposed polyaspartic protective topcoat
The system separates concrete preparation, main waterproofing and exposed surface protection, helping reduce substrate-related defects, leakage risk and outdoor aging in concrete roof waterproofing projects.
BW8010 seals prepared concrete, reduces uneven absorption and supports adhesion before the main membrane is applied. It can also be blended with quartz sand for scrape leveling, pore filling and local surface repair where the roof has pores, honeycomb areas or uneven concrete.
BW6-9528 forms the main continuous hand-applied polyurea waterproofing membrane over the prepared concrete roof. It helps improve waterproofing continuity around repair zones, cracks, pipe roots, drains, parapet corners and other detail areas where plural-component spray equipment is not convenient.
BW0-8029 is used as the exposed protective topcoat over the BW6-9528 membrane. It helps improve UV resistance, weathering resistance, color stability and surface maintainability for exposed concrete roof waterproofing projects.
Concrete roof leakage often starts from small weak points: porous or dusty concrete, cracks, local voids, drains, pipe roots, parapet corners, repaired areas or exposed membrane aging. The BW8010 + BW6-9528 + BW0-8029 system helps reduce these risks through a controlled route from substrate repair to membrane formation and exposed-surface protection.
Concrete roof waterproofing starts with a clean, dry and repaired substrate. Review surface strength, cracks, pores, larger voids, drains, pipe roots, parapet corners and equipment bases before coating begins so weak areas can be repaired before the waterproofing membrane is applied.
BW8010 helps seal prepared concrete, reduce uneven absorption and support adhesion before the hand-applied membrane. Where needed, it can be blended with quartz sand for scrape leveling, pore filling, honeycomb repair and local uneven concrete correction in repair zones.
BW6-9528 forms the main continuous waterproofing membrane over the prepared and primed concrete surface. This layer helps cover small or medium roof areas, repair zones and detail-rich locations such as pipe roots, drains, cracks and parapet corners where plural-component spray equipment is not convenient.
BW0-8029 is applied over the BW6-9528 membrane as the exposed protective topcoat. It helps protect the roof surface from UV exposure, weathering, color aging and long-term outdoor service conditions.
System-relevant values for concrete roof waterproofing: primer adhesion, membrane thickness, crack-bridging flexibility and exposed weather protection.
| Item | Test standard / reference | Result |
|---|---|---|
| Density g/cm³ | GB/T 6750-2007 | 1.02 |
| Solid content | Product Information | ≥98% |
| Concrete adhesion | ASTM D-3359 | 3.5 MPa or substrate broken |
| Temperature variation | GB/9278-1988 | -40 to +150°C, 24 h: normal |
| Salt resistance | Chemical Resistance | 50 g/L, 30 d: no corrosion, blistering or peeling |
| Alkali resistance | Chemical Resistance | 50% NaOH, 30 d: no corrosion, blistering or peeling |
| Item | Test standard / reference | Result |
|---|---|---|
| Elongation | ASTM D-412 | 400% |
| Tear strength | ASTM D-624 | 52 kN/m |
| Tensile strength | ASTM D-412 | 17 MPa |
| Concrete adhesion | HG / T 3831-2006 | 3.3 MPa |
| Salt spray resistance | Chemical Resistance | 2000 h, no corrosion, blistering or peeling |
| Item | Test standard / reference | Result |
|---|---|---|
| Elongation | ASTM D-412 | 200% |
| Tensile strength | ASTM D-412 | 20 MPa |
| Impact strength | GB / T 1732 | 50 kg·cm |
| Abrasion resistance | HG / T 3831-2006 | 5 mg |
| Accelerated aging | GB / T 14522-1993, 1000 h | Gloss loss <1; chalking <1 |
| 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 concrete readiness, BW8010 repair condition, BW6-9528 membrane continuity and BW0-8029 exposed topcoat condition.
Confirm the prepared concrete roof substrate before BW8010 primer repair.
Check whether the repair base and hand-applied membrane are continuous across roof areas and details.
Review the exposed topcoat and final roof condition before delivery.
Use these checks to judge whether the BW8010 + BW6-9528 + BW0-8029 system is suitable before final specification.
For concrete roof substrates that can be cleaned, dried, repaired and prepared before primer application.
For small or medium concrete roof repair zones where pores, cracks, uneven areas or larger surface voids need local repair before membrane work.
For parapets, upturns, inner corners and vertical transitions where waterproofing continuity needs careful hand application.
For drains, pipe penetrations, equipment bases and other detail-rich roof locations where leakage risks are often higher.
For exposed roof areas where the waterproofing membrane needs UV-resistant polyaspartic surface protection.
Do not finalize material consumption or film thickness from roof area alone. Confirm concrete substrate condition, repair scope, target membrane thickness, topcoat color, exposure level and project requirements before final specification.
Common questions about using the BW8010 + BW6-9528 + BW0-8029 system for prepared concrete roof waterproofing and detail repair.
