Installing Flashing And Drip Edge
InspectAPedia tolerates no conflicts of interest. We have no relationship with advertisers, products, or services discussed at this website. Roof drip edge flashing installation requirements: Is drip edge flashing needed? How & where should it be installed on roof eaves & gable ends?
The strip of metal flashing that runs under the roof along the eaves of your house is called eave strip or drip edge. Eave strips help support the roofing that. Sep 22, 2014 Installing Drip Edge On Your Roof! Paul Ricalde. Drip Edge Installation to prevent Water Dripping behind a. Drip Edge Flashing Installation. Memorandum Of Trust Form Oklahoma on this page.
This article discusses the requirements for roof drip edge flashing. We explain where drip edge flashing should be installed, in what position, and we describe the placement of drip edge flashing beneath roofing underlayment or ice and water shields & shingles or other roof coverings. This article series discusses roofing installation, including roof sheathing, roof underlayment, roof coverings such as shingles, slates or membranes, and roof flashing. Rg Steam Crack. Roof Drip Edge Flashing at Roof Eaves & Gable Ends [Click to enlarge any image] Roof drip edge flashing serves multiple functions on a building, the foremost of which is to assist water in leaving the roof edge with minimum damage to other building components by directing the water off of the roof and into the gutter. Without this detail water leaving the roof edge wants to run down building fascias, soffits, and walls, sometimes even entering and damaging the structure. The drip edge also gives us a nice straight edge with which to align roof shingles, slates or other roofing material.
Drip edge varies in dimensions but typically the flange that nails to the roof surface is about 2.5' wide and the vertical edge that directs roof runoff down and away is about 1. Paypal Ipn Php Script For Digital Products there. 5' in depth. Lengths of drip vary but typically it's sold in ten foot lengths (120').
The sketch above illustrates the end-profile of roof drip edge flashing and shows its placement on the roof. Usually you won't see much of drip edge as it's under the roof shingles, under the underlayment, and behind the roof gutter. But where no gutters are installed you might get a peek. Our photo above shows what we ask of roof edges: if there is no gutter, water leaves the edge and zooms out into space away from the building.
If there is a gutter, water leaving the lower roof edge is directed into the gutter, not behind it, not down building walls, not where we don't want it to go. The brown drip edge is properly installed and is doing its job. Most of the roof runoff is going off the roof not down the fascia board. Where Should Roof Drip Edge Flashing Be Placed? [Click to enlarge any image] Our illustration above shows proper placement of the roof drip edge atop the roof sheathing - before installation of roofing felt or ice and water shield and spaced a bit away from the fascia board to improve its drainage. Thanks to my carpentry teacher Bernie Campbalik for this tip. What Happens if Roof Drip Edge is Improperly Placed or if Omitted Entirely?
The photo below at left illustrates use of a site-built 'drip edge' nailed tight against the fascia board, leaving a gap that in turn sends roof runoff behind the gutter. At below right you see the stains on the aluminum-wrapped fascia board confirming that a lot of water is being sent behind rather than into the gutter on this roof. As we discuss at, in the photo below I'm pointing to the trouble (on another home). The roofer installed the drip edge tight against the fascia. There was no way that the gutter installe was going to get the upper edge of the gutter behind the drip edge. Some rain runoff, by capillary action runs up under the shingle drip edge and down the fascia behind the gutter., Installing Drip Edge on a New Roof or Re-Roofing Job [Click to enlarge any image] Our photo above illustrates several details of roof drip edge, eaves flashing, and gable end flashing at an asphalt-shingle re-roof job we documented in Dutchess County, New York. From left to right: • Green arrow: points to the white aluminum drip edge installed at the lower roof edge.
Drip edge is also sold in brown, black and some other colours. Drip edge flashing directs roof runoff away from the roof fascia and edge and into gutters or at least not down the fascia board (if no gutters are installed) and it is recommended by roofing standards, manufacturers, and experts. Space the drip edge away from the roof fascia: I like to install the drip edge so that the inner surface of the vertical lip of the drip edge is about 1/4' proud (away from) the surface of the fascia board. Even though the outwards-bend of the lower edge of the vertical lip of the drip edge is intended to send water away from the building, this added 1/4' space improves that performance, avoiding the travel of water back up under the drip edge by capillary action where it then wants to drivel down the fascia. This space also reduces the chances that an idiot installs the roof gutters on top of rather than up under the drip edge - another detail that can cause trouble. See for more about gutters installed on top of rather than up under the drip edge lip. Also see for more examples of what happens if the gutter is installed over rather than behind the drip edge.