ShadowHawk

Success Story - ShadowHawk Box Vents for Intake (and HE15 Roof-Mount Power Fan for Exhaust)

Arrington Roofing Company, Inc.
Address: 2203 Obenchain Street
Dallas, TX 75208
Phone: 214-698-8443
Website: www.arringtonroofing.com

“This was a very complicated townhouse reroofing project. There were no eaves for traditional intake ventilation. There were multiple attics. The sloped roof was replaced with synthetic slate. The flat roof areas were reroofed with TPO. Townhouses adjoin on both sides. We used ShadowHawk roof-top box vents for intake and HE15 roof-mount power fans for exhaust. ” – Chris Arrington, vice president, Arrington Roofing Company, Inc.

Editor’s Note: ShadowHawk box vents have a streamlined design to allow them to safely shed water in a rain event when placed low on the roof. They are uniquely engineered to work as either intake (positioned low on the roof) or exhaust (positioned high on the roof). The High Efficiency 15 (HE15) roof-mount power fan has a variable speed motor with an on-board computer chip that monitors the conditions of the attic and adjusts the motor’s output accordingly. It can save homeowners on average up to $60 annually on their electricity bill compared to standard power fans. 

Click an image to enlarge:

Image 1)Complicated roof
Image 2) ShadowHawk close up for intake
Image 3) ShadowHawk for intake; HE15 for exhaust
Image 4) After

Success Story - ShadowHawk Box Vents for Intake (and HE15 Roof-Mount Power Fan for Exhaust)

Arrington Roofing Company, Inc.
Address: 2203 Obenchain Street
Dallas, TX 75208
Phone: 214-698-8443
Website: www.arringtonroofing.com

“We used ShadowHawk box vents for intake low on the roof and an HE15 roof-mount power vent for exhaust on this re-roof project. The soffits were exposed rafters covered with vinyl siding. In effect, there was no intake ventilation. The ridge vent you see in one picture is a separate attic. We removed two turbines, two power vents and some ridge vent. ” – Chris Arrington, vice president, Arrington Roofing Company, Inc.

Editor’s Note: ShadowHawk box vents are designed to work as either intake (positioned low on the roof) or exhaust (positioned high on the roof). The HE15 roof-mount power fan has a variable speed motor with an on-board computer chip that monitors the conditions of the attic and adjusts the motor’s output accordingly. 

Click an image to enlarge:

Image 1) ShadowHawk box vents installed
Image 2) HE15 Power Fan installed
Image 3) Moisture buildup can cause roof deck damage

Success Story - shadowhawk (as an exhaust vent but low on the roof)

VIP Roofing
Address: 211 East Avenue G, Suite 66
Midlothian, TX 76065
Phone: 972-978-6328
Website: www.viproofer.com

“This is a tricky project. It’s a garage with a shop/office. The roof has a two-part system with a separation in the attic by a half wall. The upper roof has wind turbines for exhaust being supplied intake from the gables (not shown). The lower part of the roof had intake (rectangular undereaves installed under the patio shown in the pictures) but no exhaust. We installed ShadowHawk low on the roof to be the exhaust. ” – Patrick Johnson, Owner, VIP Roofing, Midlothian, TX

Editor’s Note: Not shown in the pictures but corrected by VIP Roofing was removing vented soffit going up the rake on the gable ends of the house. Intake ventilation should never be installed in the triangular rising rake approaching the roof peak. Intake should always be horizontal to the street and ideally as low on the roof as possible. 

Click an image to enlarge:

Image 1) Wind Turbines (acting as exhaust for the upper portion of the roof) with ShadowHawks (acting as exhaust for the lower roof which is separated in the attic by a half wall)
Image 2) Close Up of Wind Turbine (high) and ShadowHawk (low)
Image 3) Rectangular undereaves under the patio (which are feeding the ShadowHawks low on the roof)

Success Story - shadowhawk (as an exhaust vent)

A Better Way Construction & Roofing LLC
Address: 3300 W Van Dorn Street
Lincoln, NE  68522
Phone: 402-432-9000
Website: www.abw-mc.com

“These slim, wide vents have more venting capacity than standard box vents and they work much like a ridge vent (thanks to its external wind baffle design). The unique thing about these vents is they can be used as intake vents (low on the roof) or exhaust (high on the roof as pictured). They look good with a low profile design.” – Sue McCollum May, Owner, A Better Way Construction & Roofing LLC

Editor’s Note: Usually, only ridge vents have an external wind baffle. This is Air Vent’s first box vent to feature the external wind baffle. With this feature, the vent can take advantage of the wind that hits the baffle by deflecting it up and over the vent creating low pressure above the vent’s louvers. This low pressure literally pulls more air out of the vent than otherwise would exit the vent without an external baffle. The entire process is called the Bernoulli Effect and it’s what gives lift to an airplane. Additionally, the external baffle helps deflect weather away. 

Click an image to enlarge:

Image 1) ShadowHawk as exhaust on a traditional roof
Image 2) ShadowHawk as exhaust on a hip roof