Ductwork Attic Pipe

Installing ductwork in the crawl space beneath a home limits movement and poses a lighting challenge.

Ductwork attic pipe. With a heavy duty foil backing that is printed for easy inspection and an aggressive acrylic adhesive nashua 324 amp is the ideal choice for heating ventilation and air conditioning installations that. We invited bob schmahl to give us a few pointers. Working with round ductwork. Item 1790033 model 1790033.

Today s flexible ductwork is covered with a shiny metallic cover this is its vapor barrier. Lambro rigiflex 4 in x 96 in aluminum semi rigid flexible duct. The trick to getting these installations right is to use rigid ductwork for all deviations from straight then pull the ductwork taut between the two ends which now point towards each other. 1 10 5 25 per foot insulated flexible duct 4 to 16 diameters used as branches or in radial duct attic systems 2 30 13 00 per foot round and oval sheet metal duct 3 to 8 diameters typically used for trunks in small homes and.

In more cases than not a 3 ton ac with the ducts in the attic has a ton or so of load that s just from the location of the ducts in the attic and the associated duct gains leakage etc. Cost of installation supplies. Bob s been a tin bender for more than 40 years. However an attic in pensacola florida is likely to have a humidity level closer to 100 and the risk of condensation on ductwork would then go up quite a bit.

Because the average humidity level is 10 20 in phoenix. Here are the itemized costs for the most common types of ductwork and supplies needed to complete installation. Think about it condensation on ductwork probably isn t a big problem in phoenix arizona but why. The big advantage over a full rigid installation is sound control the installations are quieter than fully rigid ones.

Shop plan design service. Ductwork located in an attic crawl space may be difficult to get to and creates a hot and potentially hazardous environment for the crew. Nashua 324a cold weather foil tape is ul nashua 324a cold weather foil tape is ul code approved for sealing class 1 rigid 181 amp p or class 1 flexible 181b fx duct joints and connections. Engineered for performance and durability using heavy gauge steel our round sheet metal ducting is built to withstand the high air pressures and constant abrasion created in dust collection and other material handling applications.

There you have it. The shiny vapor barrier will protect the ductwork from sweating as long as it s exposed to the surrounding air. Hvac ductwork is typically visible in your attic especially flexible ductwork.