
The barrier nobody sees decides how the building performs.
Air and water resistive barriers only work when they are continuous: every transition, penetration, and termination detailed and sealed.
Because Caston also installs the cladding, plaster, and framing around it, the barrier gets detailed as part of the envelope instead of between scopes.
Air barrier scopes delivered on education, healthcare, and civic projects across the region.
Scope
What Caston self-performs
- Fluid applied air and water resistive barriers
- Sheet and self-adhered membranes
- Transition and penetration detailing
- Window, door, and opening interfaces
- Continuity review and field verification support
- Coordination with cladding and plaster systems
Where It Shows Up
Built work across Southern California
Other Capabilities
- Drywall
- Lath and Plaster
- Metal Stud Framing
- Spray Applied Fireproofing
- Exterior Insulation & Finish Systems (EIFS)
- Scaffolding
- Rain Screen and Exterior Cladding Systems
- Rough Carpentry
- Specialty General Contracting
- Insulation
- Acoustical Ceilings
- BIM
- Design Build / Design Assist
- Division 10 Specialties
- Metal Panels
- GFRC and GFRP
- Talk to Caston
One Partner, Seventeen Trades
Bundle the scope and one team owns the outcome.
Fewer handoffs, fewer gaps between trades, one number to call when something changes.





