Flat Roof Duct Addition

Flat seam roof expansion guidance over 30 feet use batten seam design to allow for expansion copings and fascia also require joints that accommodate expansion between sections figure 1 5 allowances for gutter expansion roof edging and perimeter.

Flat roof duct addition. Forum home ca modern forums home maintenance hotline how to conceal hvac duct work on a flat roof. Rather than elevating ducts above the roof dura foam systems integrate low profile rectangular ducts that are installed directly over flat roof s deck boards. Tying in a flat roof addition makes it possible to extend and add to your existing property without affecting the look of it. Called a gravel stop it works on any kind of flat roof and comes in many colors.

Step 1 plan. The flat roof addition design can go up against different style that when nitty gritty right can ooze a cutting edge feel. The lower half of the flange sits on top of the shingles. It appears that the house originally had only one unit with the second unit added later.

Last option i can think of is add a roof to the house and create an attic if funds are available for such a project. We purchased an eichler style house few years ago and the contractor moved the hvac duct work to the roof. The house has a flat roof and 2 rooftop ac units. Count the cost of a roof top which will need a curb and crane and play with the options.

One option is to run spiral duct exposed. The house has no attic so they create a drop ceiling for the duct work. Then closed cell polyurethane roof waterproofing materials embed and encapsulate the ductwork. Nail the lower corners with roofing nails and tar the heads.

Next option is to box in duct. This will seal the parts of the roof together and reduce the risk of leaking. A roof design gives the chance to extra floor space in the roof volume similar to a space or upper room space. How to conceal hvac duct work on a flat roof.

Once the flashing is in place the roof is ready to face the elements. May 27 2012. Slide the vent under the shingles so they cover the top half of the vent flange. First off the flat roof addition design is an extremely basic direct and utilitarian design every single current trademark.

The off the rack alternative to custom flashing is a galvanized drip edge specially made for flat roofs. There are design differences for each type. Apply a bead of asphalt roof cement on the bottom of the vent. Looking at an older house in las vegas built in the 70 s.

If done properly the flat roof can be tied in so that it doesn t change the look of the house at all. The two classic types of flat roof designs are the warm flat roof and the cold flat roof.