Hvac Ducts On Roof

Lambro rigiflex 4 in x 96 in aluminum semi rigid flexible duct.

Hvac ducts on roof.

Duct temp gain when inside doghouse with r30 is less than 5 at 50. The straps that hold up the flex duct need to be no less than 1 5 wide. High quality ventilation products delivered quickly. 1 reply august 23 2014 10 40am sarah.

May 27 2012. Not only does the duct displace insulation it s also right up against the roof deck. 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. Choose from a full line of sheet metal ducts including elbow ducts ductwork tools duct wyes flexibles galvanized ducts and reducer ducts.

Item 1790033 model 1790033. The average cost for a duct and vent professional is 100. The official recommendation from the adc is that flex ducts should sag no more than 1 2 per foot of length between supports. 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. 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. It maintains the most efficient characteristics for airflow and is common throughout the country. 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.

The supports need to be at the manufacturer s recommended spacing but no longer than 4 maximum. The insulation should provide the clue you need. The price of a duct and vent professional can vary depending on your area. Forum home ca modern forums home maintenance hotline how to conceal hvac duct work on a flat roof.

We purchased an eichler style house few years ago and the contractor moved the hvac duct work to the roof. You put the ducts in the envelope of the house and it helps it keep cool costello says. How to conceal hvac duct work on a flat roof. 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.