Flat Roof Detail Section With Hvac

Although flat roofs are cheaper to build than pitched roofs they have a shorter life span.

Flat roof detail section with hvac.

Otherwise the system may not work the way it should. Large flashings are formed with a hook edge on the top and sides and cleated to the sheathing at 12 o c. What typical detailing methods are used to seal flat roof penetrations. Waterproof membrane to prevent water penetrating the structure and interior of the building.

Airtightness page 7 very good levels of airtightness are required for all flat roof constructions. Yet for historic modern style buildings like this old house s cambridge tv project flat roofs are at the core of the architecture meant to reflect the broad horizontal lines of the natural landscape. Firestone has developed cad drawings of its epdm installation details to assist roofing professionals with the specification of firestone epdm roofing systems. You d start at the bottom edge with a 1 2 inch to 1 1 2 inch piece and then at the up slope side place a sheet of 1 inch flat foam and layer another piece of the tapered foam on top of it.

Typical methods include banding pitch pockets and cover flashings. Location page 5 factors such as the amount of sunshine temperature surrounding buildings or wind affect a flat roof and need to be considered. Banding is typically used to seal soil vent pipes on single ply roofs such as fdt rhepanol pib and involves wrapping an unreinforced membrane around the pipe to a minimum height of 150mm. Factors that affect a flat roof construction.

The detail drawings are grouped by detail type and can be downloaded below in dwg or pdf format. Of course there is an installation spec manual from ib roofs which we always keep handy and actually had to use once or twice. A blower door test is strongly recommended. Of course you don t need to live in a modern house to deal with a flat roof.

Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof. A flat roof usually consists of the following. Installing a flat roof pvc single ply roofing membrane in this case can be a pretty straight forward process or a very confusing endeavor because each component must be installed in a particular order. If for instance you wanted to add 1 4 inch per foot to a dead flat roof you would get foam that ranges from 1 2 inch thick to 1 1 2 inches thick over 4 feet.

Buying a york curb ensures that this data is included with each unit. York does not provide roof system materials required in the fl ashing of a structural member through a roof deck. This detail illustrates a method of flashing a ventilator on a sloped roof. A roof is considered to be flat when it is of a slope of 1 5o to the horizontal.

The lower edge is hemmed for stiffness. The base flashing extends onto the roof a minimum of 4 and is soldered to the ventilator.