Common facers include:
- Aluminum foil: Provides excellent vapor barrier (0.02 perm), UV protection, and reflective properties
- Glass fiber mat: Offers breathability, fire resistance, and compatibility with various coatings
- Kraft paper: Cost-effective for interior applications with lower moisture exposure
- Composite facers: Combining materials for specific performance requirements
Facer selection depends on application requirements for vapor permeability, fire rating, adhesion properties, and exposure conditions.
