Hvac Ducts On Roof

Round pipe can be used as a main trunk line or branch line as well as in return air situations.

Hvac ducts on roof.

The insulation should provide the clue you need. The supports need to be at the manufacturer s recommended spacing but no longer than 4 maximum. In sweltering cities where temperatures often blow past 110 degrees installing ductwork on roofs and piping cool air through the oven like atmosphere doesn t make sense in terms of energy efficiency. Duct temp gain when inside doghouse with r30 is less than 5 at 50.

Master flow metal pipe is available in a master flow metal pipe is available in a variety of common lengths diameters and gauges to help make your next hvac project a success. This is my exact climate we do have to run ducts on the roof all the time. To hire a duct and vent professional to install or remove your ducts and vents you are likely to spend between 80 and 150 total. The absolute best way to run the ductwork above the roof is to use r8 insulation on the ductwork internal and build a doghouse outside the ductwork with minimum r30 insulation on sides and top of duct.

We purchased an eichler style house few years ago and the contractor moved the hvac duct work to the roof. Item 1790033 model 1790033. The average cost for a duct and vent professional is 100. Those ducts are going through a vaulted ceiling and just as a vaulted ceiling is a terrible place to put recessed can lights it s also perhaps the worst place you can put a duct for your hvac system.

Lambro rigiflex 4 in x 96 in aluminum semi rigid flexible duct. Not only does the duct displace insulation it s also right up against the roof deck. The official recommendation from the adc is that flex ducts should sag no more than 1 2 per foot of length between supports. 1 reply august 23 2014 10 40am sarah.

May 27 2012. The price of a duct and vent professional can vary depending on your area. American made roof vents wall vents dryer vents duct dampers storm collars and more for commercial and residential use. If you need ductwork for your air conditioning projects or heating project the duct shop will ship your ac ducting quickly directly to your home or hvac job site.

High quality ventilation products delivered quickly. It maintains the most efficient characteristics for airflow and is common throughout the country. The straps that hold up the flex duct need to be no less than 1 5 wide. How to conceal hvac duct work on a flat roof.