Wir helfen den Fassaden!
www.siliconharzfarben.com
Test criteria for substrates
| Criterion | Test method | Remedial action |
|---|---|---|
| Strength | Scratch test | Remove or consolidate any loose, friable plaster |
| Silting | Wipe by hand | Remove any loose material, dry-clean, consolidate |
| Absorbency | Moisten with water | Non-absorbent/poorly absorbent: sand the surface or apply an adhesion promoter; absorbent: apply a primer |
| Moisture | Visual inspection, moisture meter | Eliminate cause, allow to dry out |
| Salts | Visual inspection | Prevent further moisture, allow to dry out, brush off salts, apply a solvent-based primer |
| Non-uniform structure | Visual inspection | Apply a slurrified smoothing coat |
| Fine cracks, impact and course joint cracks, structural cracks |
Visual inspection, visual inspection after wetting, visual inspection of course joints for cracks | Apply a slurrified smoothing coat, apply a crack-bridging coating; widen and fill cracks. Cracks cannot be repaired permanently with crack-bridging coatings |
| Mold, algae | Visual inspection | Remove using suitable means; if necessary, apply an algicidal/fungicidal coating |
| Criterion | Test method | Remedial action |
|---|---|---|
| Load-bearing capability, adhesive strength, adhesive strength | Scratch test, adhesive tape test | Remove loose paint coatings |
| Dirt pick-up | Visual inspection | Clean with high-pressure water jet/steam jet |
| Chalking | Wipe by hand | Remove powdery substances with high-pressure water jet/steam jet |
| Mold, algae | Visual inspection | Remove using suitable means; if necessary, apply an algicidal/fungicidal coating |
| Salts | Visual inspection | Brush off dry substrate; remove loose paint coatings |