WickRight® Works
How WickRight Parapet Vent - Vented Drip Edge and Vented Receiver Clip works:
• Metal Flashing – Vented Drip Edge and Vented Receiver Clip that we install under parapet capstones, prevents future moisture intrusion by waterproofing the top of the parapet and directing bulk water away from the building.
• Venting - the airflow portals of our Vented Drip Edge and Vented Receiver Clip provides engineered pathways for air and moisture movement. It acts as a rain screen to let trapped moisture vapor leave the parapet wall.
WickRight Testing - Computer Fluid Dynamics Simulations
Capstone Vented Drip Edge, Vented Receiver Clip and Metal Coping Vent
- Introduces
7.2 CFM - cubic feet per minute per linear ft of
fresh air flowing over parapet and into wall core
with 18 mph wind (avg wind speed Chicago summer day). This helps dry any moisture intrusion that may occur.
- Produces lift force of 7.87 lbs per foot which pulls moisture vapor out of the wall
- Solar Drive and Wind promote continuous drying
Do the math -
Standard 180' perimeter on 3-flat in Chicago
7.2 CFM x 180 linear feet = 1296 CFM!
Moisture Vapor Venting
ASTM & NFA Stats
WickRight Membrane -
Breatheable, yet virtually waterproof!
- ASTM-E312-720-1467 vapor permeability rating
- Membrane withstands
19.1 psi vertical
application of water for
20 minutes
Note: Membrane is installed horizontally within the wall assembly - no direct application of water is possible
- Holds
8 oz of standing water up to
9.5 hours with only
.040 grams of seepage
Vented Flashing
Installation stats
Over 150 WickRight Vented Flashing Installations – No Call Backs
- 75 Vented Drip Edge/Vented Receiver Clip Combo installations
- 35 Metal Coping Vent installations
- 27 Clay Coping Vent installations
- 62
Flat Roof Vent installations
- 18 Fascia/Perimeter Vent installations
- 2 Hip & Valley Vent installations
See Full Client map and Illinois Dept of Health Asthma Prevalence Overlay
Interior Rain Screen Results
New Construction Application
Restoration Application
Vertical installation of vent materials
on interior side of exterior walls
Benefits:
- Blocks 100% of moisture intrusion
- Eliminates condensation build-up
- Funnels moisture vapor to exit at parapet
- Acts as a Heat Exchange
- Translates to substantial cooling energy savings - 15º lower temperature on interior side of CMU wall
Client in Tampa –
"I was sitting on the roof and the steam coming out of the parapet actually burned my legs."
Vented Flashing Field Observations
Installation Monitoring

WickRight has monitored 15 buildings with Capstone Vented Drip Edge/Vented Receiver Clip or Metal Coping Vent and Low-Slope Roof Vent installations 36 months post installation.
Typical Results:
- Elimination of leaks at ceiling/floor levels within 1 week
- Improvement of air quality/elimination of smells within 2-3 weeks
- Significant reduction of indoor humidity readings within 3-4 weeks
- Improved HVAC system performance and reduced heating and cooling bills compared to previous season
Jim M - Contractor Testimonial 1
Other Testing Results
Practical, Durable Designs
- Crush testing - Capstone Vented Drip Edge withstands up to 323 lbs of pressure psi
- Capstone Vented Drip Edge, Vented Receiver Clip, Clay Coping Vent and Metal Coping Vent work on all parapet widths - Capstone filler is available for installation in center of wall
- Fascia/Perimeter Vent designs available for installation on full and partial roof tear offs
- Hip & Valley Vent - 2-in-1 solution - use on hips and valleys, makes it easier to work on tight multi-roof lines and reduces materials storage needs
- Do not use WickRight products with primers or sealants that contain Xylene