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.
Flat roof duct addition.
Step 1 plan.
The lower half of the flange sits on top of the shingles.
We purchased an eichler style house few years ago and the contractor moved the hvac duct work to the roof.
One option is to run spiral duct exposed.
The house has a flat roof and 2 rooftop ac units.
Called a gravel stop it works on any kind of flat roof and comes in many colors.
Apply a bead of asphalt roof cement on the bottom of the vent.
Then closed cell polyurethane roof waterproofing materials embed and encapsulate the ductwork.
It appears that the house originally had only one unit with the second unit added later.
First off the flat roof addition design is an extremely basic direct and utilitarian design every single current trademark.
Count the cost of a roof top which will need a curb and crane and play with the options.
The two classic types of flat roof designs are the warm flat roof and the cold flat roof.
Next option is to box in duct.
This will seal the parts of the roof together and reduce the risk of leaking.
Once the flashing is in place the roof is ready to face the elements.
Looking at an older house in las vegas built in the 70 s.
A roof design gives the chance to extra floor space in the roof volume similar to a space or upper room space.
Slide the vent under the shingles so they cover the top half of the vent flange.
1 reply august 23 2014 10 40am sarah.
May 27 2012.
The off the rack alternative to custom flashing is a galvanized drip edge specially made for flat roofs.
If done properly the flat roof can be tied in so that it doesn t change the look of the house at all.
In addition there s a third type the warm flat roof with airflow that s essentially a hybrid version of the warm flat roof and the cold flat roof.
Tying in a flat roof addition makes it possible to extend and add to your existing property without affecting the look of it.
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.
The flat roof addition design can go up against different style that when nitty gritty right can ooze a cutting edge feel.
There are design differences for each type.
Forum home ca modern forums home maintenance hotline how to conceal hvac duct work on a flat roof.
The issue is that when they installed the second unit they installed the ductwork in the ceiling of the kitchen.
Nail the lower corners with roofing nails and tar the heads.
