Non-exposed Polymer Modified Asphalt Roof Waterproof Coating
Product Advantages
- Seamless monolithic waterproofing: Liquid‑formed film without lap joints, fully covers irregular areas such as corners, pipe roots and gutters to avoid leakage at overlaps.
- High elasticity & crack‑resistance: Cured rubber‑like film with high elongation, adapts to micro‑cracks and thermal deformation of substrate.
- Wide substrate compatibility: Applicable on new concrete, old roof and existing asphalt membranes; works on damp substrate without standing water.
- Flexible application: Ready‑to‑use one‑component material, supports brush, roller and spray. Cold‑applied without open‑flame, safe and efficient.
- Strong adhesion: Firm bonding to cement substrate and old waterproof materials, less blistering and delamination.
- Water & acid‑alkali resistance: Good resistance to water immersion and chemical corrosion, durable for basement and water tank projects.
- Compatible composite system: Perfect match with asphalt waterproof membranes for coating‑membrane composite waterproofing.
- Water‑based & low‑odor: Water‑based formula, coal‑tar free, user‑friendly construction environment.
Performance Indexes
| No. |
Inspection Item |
Technical Requirement |
| 1 |
Appearance |
After stirring, the sample shall be uniform without color difference, gel, agglomerate and obvious asphalt filaments |
| 2 |
Solid content, % |
≥45 |
| 3 |
Heat resistance |
No flowing, slipping or dripping at 110 ℃ |
| 4 |
Surface drying time, h |
≤8 |
| 5 |
Hard drying time, h |
≤24 |
| 6 |
Low‑temperature flexibility |
Standard condition |
No crack or fracture at 0 ℃ |
| 7 |
Elongation at break |
Standard condition, % |
≥600 |
Construction Procedure
- Substrate preparation: Remove dust, laitance, oil and loose parts. Repair cracks and holes in advance. Keep surface solid, damp and free of standing water.
- Detail reinforcement: Apply 1‑2 thin coats as extra reinforcement layer on corners, pipe roots, construction joints and cracks.
- Material stirring: Stir thoroughly after opening bucket, no extra water dilution.
- Multi‑layer application: Apply thin coats successively. Apply next coat only when previous one dries. Brush in cross directions to reach designed film thickness.
- Curing protection: Natural curing. Avoid rain, ponding and mechanical damage before full curing.
- Protective layer: Apply mortar protection after complete curing. Not suitable for long‑term direct exposure, protective covering is mandatory for exposed areas.
