Wall Systems

Cavity Wall: Brick Veneer/Reinforced Concrete Block

Designed to stand the test of time, this all-masonry wall system pairs a concrete block structure with brick for a beautiful, durable, and maintenance-free façade.

Recommended Building Types

Benefits

Special Considerations

Definition and Assumptions

Backup: Lightweight plain gray concrete block (CMU), 8" x 8" x 16" (nom.)

Reinforcement: #6 vertical reinforcement @ 32" on center. 9-gauge joint reinforcement/wall ties at 16" o.c. (every other course)

Veneer: Modular clay brick 4" x 2-1/3" x 8"(nom.)

Cavity: 3" air space

Insulation: 2" rigid expanded polystyrene in drainage cavity

Flashing: Base flashing and weeps

Veneer ties: Adjustable pintle and eye veneer ties

Mortar: Type N, Portland cement/lime, plain gray

Joints: concave tooled

Regional Variations

Fire Rating (hours)

Ungrouted Assembly: 4 hrs

Fully grouted Assembly: 4 hrs

Sound Transmission Class (dB)

Ungrouted: 55.5

Grouted 32": 57.2

Fully grouted: 61.9

STC=(weight of wall)0.223x21.5

Wall Weight (lb/sq. ft.)

Ungrouted: 70 lb/sq. ft

Grouted 32": 81 lb/sq. ft

Fully grouted: 114 lb/sq. ft

Energy Rating

R-value: 11.71 using 2" expanded polystyrene insulation (see note below)

Calculation:

Outside Air =0.17
Brick =0.44
Air Gap =0.97
2 inch Polystyrene =8.00
8 inch CMU 105 pcf, grouted at 32" o.c. =1.45
Interior Air =0.68
Total =11.71

R-value: 13.71 using 2" extruded polystyrene insulation (see note below)

Calculation:

Outside Air =0.17
Brick =0.44
Air Gap =0.97
2 inch Polystyrene =10.00
8 inch CMU 105 pcf, grouted at 32" o.c. =1.45
Interior Air =0.68
Total =13.71
Note: The type of rigid insulation you install affects the wall’s insulating capacity (the R-value). Polyisocyanurate insulation gives you 8.0 R per inch (12.0 R for 1.5" or R16 for 2"). Expanded polystyrene insulation is worth 4.0 R per inch (6.0 R for 1.5" or 8 R for 2"). Extruded polystyrene yields 5.0 R per inch (7.5 R for 1.5" or 10 R for 2"). Use either thicker insulation or more expensive polyisocyanurate to achieve a higher energy rating.

Green/LEED Rating

Design Tips

Construction Tips