Installing Shingles: Closed-Cut Valley Method
- Roofing Underlayment. The first step is to apply the roofing underlayment. If the two roof planes are at unequal...
- Laying the Shingles. Once the underlayment is complete, it is time for the shingles. Start by laying all shingles on one...
- Architectural Shingles. You might want to consider working with architectural shingles.
How do you install a closed cut valley roof?
In summary, during the installation of a closed-cut valley, you install the first roof plane’s shingles into the valley. It is essential to only use whole (not cut) shingles during this step. As you install roof shingles on the second roof plane, you allow them to lap over the valley on top of the first shingles.
What is the closed cut valley method of shingles?
If you are looking to install shingles, you might want to consider the closed-cut valley method. It is popular because the two roof planes do not need to be shingled at the same time. In general, the closed cut valley method implies stretching one side of the shingles beyond the valley while those on the other side are trimmed.
How do you install closed cut shingles?
How to Install Shingles: Closed-Cut Valley Method. Stretch it about 12 inches across the center line. Fasten the shingles about 6 inches away from the center line on both sides. Draw a 2 inch self-stick flashing down the center. Then lay the shingles on the other side of the roof and again stretch them across the valley a little.
How do you cut shingles for a second roof plane?
As you install roof shingles on the second roof plane, you allow them to lap over the valley on top of the first shingles. The shingles on the second layer are then cut, ideally creating a clean line down the center of the valley. A chalk line can be used to guide you as you cut the shingles.
How do you Shingle a closed valley roof?
1:406:15"Roof Installation: How To Shingle a Valley (HD)" by RoofRepair101YouTubeStart of suggested clipEnd of suggested clipPress the shingles into the valley. And nail them in place. Make sure that you press the shinglesMorePress the shingles into the valley. And nail them in place. Make sure that you press the shingles far enough into the valley to prevent bridging.
How do you Shingle a valley weave?
0:295:07Shingling Valley Installation - Built to Last Season 1 Video Short - YouTubeYouTubeStart of suggested clipEnd of suggested clipNow these shingles in we're going to run about four or five shingles into the valley you got toMoreNow these shingles in we're going to run about four or five shingles into the valley you got to press them in nail.
How do you start a closed cut valley?
10:5723:37How to do a closed valley!!! - YouTubeYouTubeStart of suggested clipEnd of suggested clipGet you started so you can see it. And really the trick is we go about middle finger put the middleMoreGet you started so you can see it. And really the trick is we go about middle finger put the middle finger in the center of the valley. And go on the edge of your other finger.
How do you prepare a valley for shingles?
0:0713:04HOW TO SHINGLE A CLOSED VALLEY - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd uh i just haven't gotten around to making it so today that's exactly what we're gonna be doingMoreAnd uh i just haven't gotten around to making it so today that's exactly what we're gonna be doing we got a valley right here coming up and a valley over there but i'm going to be showing you this
What is a closed cut valley?
closed-cut valley (plural closed-cut valleys) (roofing) a method of valley application in which shingles from one side of the valley extend across the valley while shingles from the other side are trimmed back a few inches from the valley centerline.
Can you do a closed valley with 3 tab shingles?
0:287:06How to weave valley 3 tab shingles - YouTubeYouTubeStart of suggested clipEnd of suggested clipHappens happens a lot people that just don't give a crap. This is what they stopped this three capMoreHappens happens a lot people that just don't give a crap. This is what they stopped this three cap shingle have a valley right here and they stopped it right there.
Which side of the valley do you shingle first?
0:141:19Learn Which Slope to Install Shingles on First for a Closed Valley SystemYouTubeStart of suggested clipEnd of suggested clipWe want it to be going over the top and being able to run down that slope okay so we want the waterMoreWe want it to be going over the top and being able to run down that slope okay so we want the water to shed with as little resistance as possible that way it flows out of there.
How do you install roofing underlayment in valleys?
0:051:16Install Self-Adhering Underlyment in a Roof Valley - YouTubeYouTubeStart of suggested clipEnd of suggested clipHere's how to install. It. Cut underlayment with a utility knife to manageable size lengthsMoreHere's how to install. It. Cut underlayment with a utility knife to manageable size lengths especially when working alone on the adhesive. Side locate the pull cord embedded along the center.
What is a closed valley on a roof?
Closed Roof Valley In the closed valley method, the shingles are installed onto the roof. This essentially extends the asphalt shingles through the valley so the roof surface covers or closes the valley area, hence the name. The shingles completely cover the underlayment, and they become the valley lining itself.
How far should shingles overlap a valley?
Shingles should overlap the edge of the liner panels by at least 6 in., and at least 3 in. of metal should be exposed on each side of the valley center for appearance and water flow.
How do you install 3 tab shingles in a valley?
0:256:20"Asphalt Shingles Roofing - How to Install Valley" by RoofRepair101YouTubeStart of suggested clipEnd of suggested clipThe open woven. And close cut methods. First we'll look at the woven valley. This is the weakestMoreThe open woven. And close cut methods. First we'll look at the woven valley. This is the weakest Valley. And should only be used with three tab singles. This technique should not be used with GAF elk
How do you seal a valley roof?
Use bituminous seal-sealing membrane to seal roof valleys. The self-adhesive membrane is installed directly on the plywood roof deck beneath the underlayment (roofing felt) and shingles. (Source: EPA Indoor airPLUS, 2020.) Clean the roofing area after the pipe or vent has been installed through the roofing deck.
Can you do a woven valley with architectural shingles?
When considering how to shingle a valley with architectural shingles, you must take into account their thickness and reduced flexibility. Laminated shingles are more liable to create bumps in woven valleys. Often, they are too thick to be woven at all.
How do you install GAF shingles in a valley?
0:071:13How to Install Timberline HD Shingles with the Closed-Cut Valley MethodYouTubeStart of suggested clipEnd of suggested clipBegin by installing full courses of shingles in one direction. Making sure to overlap the valleyMoreBegin by installing full courses of shingles in one direction. Making sure to overlap the valley centerline by at least 12 inches avoid nailing within six inches of the valley. Centerline.
How do you shingle a California valley?
1:443:57CALIFORNIA CUT VALLEY INSTALLATION TRICK - YouTubeYouTubeStart of suggested clipEnd of suggested clipThe starter shingle the first single that note needs to go down for our vertical line up the valley.MoreThe starter shingle the first single that note needs to go down for our vertical line up the valley. Two inches offset from the center of the valley for the water to flow. Here.
How do you lay 3 tab shingles in valleys?
2:423:52How to ..... Lay off a 3 tab roofing project with a valley - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd wear this shingle ends. Right here the one that's going to go underneath it is going to endMoreAnd wear this shingle ends. Right here the one that's going to go underneath it is going to end right here so I made a circle. Then I made a circle here on the next five inch mark Circle Circle Circle
Where do shingles meet in a closed cut valley?
From the ground, it looks as though the shingles meet in a clean line in the center of the valley. One layer of shingles actually crosses the valley beneath the other. In summary, during the installation of a closed-cut valley, you install the first roof plane’s shingles into the valley .
What is an open valley roof?
An open valley relies on metal flashing for protection. That flashing is left exposed, so the roof has visible lines of metal running down the valley. Some homeowners do not like the look of open valleys, while others feel the metal accentuates the roof’s shape, particularly if copper or painted flashing is used.
How to do a woven valley?
To achieve a woven valley installation, a roofing professional lays shingles in the valley and weaves them together. Some homeowners prefer the consistent look that a woven valley provides. But, if the shingles are not laid in the valley properly, a woven valley may not lay flat, creating bumps and detracting from the overall look of the roof.
Why do roof valleys open?
Tessaro also says that the open method allows for faster replacement and repair than the other techniques of shingling a roof valley. As another benefit to the roofing professional, open valleys are sometimes used to easily bridge the gap between roof faces of vastly different pitches.
What material do you need to install an open valley?
If you are installing an open valley, you will need to select a flashing material. Generally, flashing is a metal. Possibilities include:
What happens if you don't fill the hollow space under shingles?
If this is not done properly, hollow space may develop under the shingles. This “bridging” is a serious problem for the durability of a roof. The empty space makes the shingles vulnerable to penetration, either by footsteps, hail or other debris.
What is a roof valley?
A roof valley is formed where two roof slopes meet. Water collects in a valley to flow off the roof. Your choice of valley installation method is critical because, when improperly installed, valleys are risks for serious leaks. Essentially, there are three main ways to shingle a roof valley: woven, closed-cut and open.
Builder Mike Guertin shows three conventional ways and one newer method for weatherproofing this crucial roof detail
Synopsis: This article illustrates four different methods of shingling a valley, comparing the advantages and disadvantages of woven, open metal, closed cut, and Long Island valleys and describing the author’s techniques for preparing and installing each one.
Preparing a roof: All valleys start the same
Regardless of the shingling method, every successful valley installation begins with proper roof preparation.
How far apart should I put shingles?
We're in a high wind zone so follow the manufacturer's 6-nail pattern (plus in RI the building code requires 6 nails). OC Duration shingles call for the double-nails one inch apart at 13 in. in from each end. Many companies call for 6 nails spaced at 7 1/2 in. apart. I prefer the double nails because it's easier to eyeball the 1/3 points along a shingle rather than dividing the space visually into 5 spaces.
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Is a no cut valley fast?
In my opinion, no-cut valleys are fast to install, water-resistant, and beautiful. It installs and looks almost the same as a regular-cut valley, where the shingles on the low-volume roof plane are installed first and pass through the center of the valley by at least 12 in. Then, rather than cutting the shingles on the high-volume roof plane, ...
Does Tamko have a no cut valley?
Tamko is the only shingle manufacturer that shows the no-cut shingle valley process in their installation instructions. I think I first learned of the system reading a bundle of Tamko shingles about 22 years ago and have used it frequently since. I checked with the technical reps from several major shingle manufacturers to see if there were any restrictions against using a no -cut valley process with their shingles, and there weren’t any — other than a caution that if the rake starter pattern of joint offsets wasn’t followed, that there may be some shading differences between shingles that would show
What is a closed cut valley?
Closed-cut valleys have a straight cut down a few inches from the center. Most homeowners like this look.
How to tell if a roof is closed cut?
You can identify a closed-cut roof valley by the straight line of cut shingles running down the approximate middle of the valley. To get this look, a roofing professional installs the shingles on one roof plane first. They stop roughly 12 inches past the center of the valley. Then, they install the shingles on the second plane, allowing them to overlap the first layer. Finally, they cut the second layer of shingles in a straight line two inches from the center of the valley. As a result of this installation method, the top layer of shingles overlaps the bottom by a few inches.
When Should Your Roof Valley be Repaired?
It’s far more cost-effective, and less of a hassle, to have your roof valley fixed before a leak has developed.
Why Focus on Your Roof’s Valleys?
Valleys are a critical part of a roof because they see the most water flow. Ensuring that you have the best-performing type of roof valley installed will help give your roof the longest life possible.
Why do roofers nail in the valley?
They also perform better because they don’t require as much nailing in the valley. Instead, roofers should nail only at the edges of the flashing, which is far enough from the center of the valley to be safe. Most homeowners also find that they like the look of open metal valleys because they define each roof plane.
What is a roof valley?
All other valley types are not covered by IKO’s limited warranty. A roof valley is a spot where two roof surfaces meet. Each roof plane has a layer of shingles that need to smoothly intersect at the valley, even though they are laid at slightly different angles.
How are shingles woven together?
In a woven valley, shingles are woven together through the valley. The roofing professional installs shingles on both planes at once. When they reach the valley, they weave the shingles from each plane together, without having to cut them.
