Selection Boundaries for SF-W9, SF-N9 and SR701 | Huamiao Technical Insight
The three models serve exterior insulation coating, interior skim insulation and water-repellent addition in dry mixes respectively; their selection boundaries should not be treated as interchangeable.
## Scope The three models serve exterior insulation coating, interior skim insulation and water-repellent addition in dry mixes respectively; their selection boundaries should not be treated as interchangeable. ## Information to collect Use SF-W9 for roofs, exterior walls and assessed industrial surfaces; SF-N9 for interior skim and thermal-bridge areas; and SR701 in compatible dry-mix mortar, grout or filler, mineral-powder and concrete-product systems. Start an inquiry by identifying the finished-product form and application location. ## Practical validation checklist 1. Define the target substrate or formulation and keep an unchanged reference sample. 2. Change one primary variable at a t