Does step flashing go under shingles?

Does Step Flashing Go Under Shingles?

The answer is yes! If your roof doesn’t have any cracks or other problems then flashing will go over the top of the shingle. There are some conditions when it won’t work. If there are cracks in the shingles or if they’re not flat enough, then it won’t work.

You’ll need to check with your roofer to see what’s going on. Some roofs don’t have any issues at all and will just work. Other times, you may need to get professional help from a licensed roofer.

How To Install Step Flashing On Existing Roof?

Step flashing installation is pretty simple once you understand the basics of how it works. First thing you want to do is make sure your shingles are straight and level. Next, you want to measure out where you’d like the flashing to go. For example, if your roof is 6 feet wide and 8 feet long, then you would measure out 6 foot x 8 foot area of shingles.

Then, cut them into strips so that each strip measures 1 inch wide. Make sure the strips are straight and level before putting them on your roof. Finally, cut a 1×3 board to match the width of your roof. Lay the strips on top of the board and nail them down. You’ll need to make sure all your strips are level and straight.

Can You Install Step Flashing On Existing Siding?

Siding is always an issue. In most cases, you want to have a minimum of 1 inch of clearance between the bottom edge of the flashing and the top of your siding. If you have a wooden wall, you may want to put some wood under the flashing before nailing it down. If you have vinyl siding or aluminum siding, you only need to put a little bit on the top of your siding before installing the flashing.

You can also buy siding screws and use those instead of nails. Always make sure that the flashing is tight against the siding so that no water can get behind it. That way if it does rain, any water will run down the flashing instead of working its way behind your siding and damaging it.

Can You Install Flashing On A Roof That Already Has Shingles On It?

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Yes, you can install flashing on a roof that already has shingles on it. It isn’t as easy as installing it on a bare roof, but it is definitely possible. The first thing you need to do is find the high spots on your roof. These are the areas that don’t have any shingles.

Next, take a long piece of wood and use it to measure the distance from the eave to the high spot. Use that measurement to cut out a piece of flashing that will reach from eave to high spot.

Now, you need to cut notches where the corners of your roof meet. You can cut these with a hacksaw or a jig saw. Next, you need to nail the flashing into place with roofing nails. Once that is secure, you can start installing the rest of your shingles.

Remember to use ice and water shield as well.

How Long Does Step Flashing Last?

How long flashing lasts really depends on the quality of the flashing and the care it gets. The best flashing will last close to a lifetime. How long it lasts also depends on how well it is installed and the climate it is installed in. The worst case scenario is high winds blowing the shingles off your roof and exposing the step flashing to direct sunlight for an extended period of time.

If this happens, the step flashing could warp and crack, making leaks more likely. That being said, if you installed the flashing correctly and used good materials, it should last you anywhere from 8 to 20 years.

Does Step Flashing Come In Different Colors?

Yes, there are some manufacturers that make step flashing in different colors. This is more for looks rather than anything else. Since it is so visible, some people like having flashing that blends in a little better with the shingles. There is no real functional difference between the different colors though.

Installing step flashing is a great way to extend the life of your roof. If you are thinking about getting it done, be sure to call a professional though. This application requires the skills and tools of a professional. Even if you have the proper tools, it is always good to have someone with experience show you how.

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Last updated 2/2/19

Brands

Asphalt Shingle Jackets

Asphalt shingle jackets are an after market product that can be installed in a matter of minutes and can add years of life to your roof. Over the years, asphalt shingles become brittle and crack, after enough time this constant expansion and contraction causes the asphalt layer to break free from the fibreglass mat causing the shingles to curl at the edges and look unsightly.

The jacket reinforces the bond between the asphalt shingle and the fibreglass base, making it stronger and stopping any future cracking or curling. As the jacket is made out of asphalt and fitted over existing shingles there is no need for additional surface preparation, saving you time and money. As the jacket is made from asphalt, it blends in with the shingles so both the look and feel of your roof is maintained.

Asphalt shingle jackets are an affordable alternative to expensive roof replacement, costing around $4 per square foot for a standard 2,000 square foot roof. This cost can be offset by the increased resale value of your home.

In the past, asphalt shingle jackets were made from recycled rubber tyres which had the benefit of being flexible and resistant to extreme temperatures, but recycled rubber is becoming increasingly expensive and difficult to find, leading manufactures to begin using a combination of powdered plastic and asphalt instead. This gives the jackets the flexibility required but this type of mixture can lead to discolouration and brittleness in high UV environments.

How to Install Asphalt Shingle Jackets Under an Existing Roof

Roof replacements are a major expense, costing upwards of $5,000 and involving several days without a roof over your head. The process of installing step flashing requires an additional day without roof access and the process of removing old shingles and installing new ones can take several days more. As the cost of asphalt shingle jackets is only a few hundred dollars you may be wondering whether to get step flashing or a full roof replacement.

This decision should be based on your local climate, the age of your roof and the condition of your shingles. If you live in an area where there is a lot of rainfall then getting the step flashing installed will improve the lifespan of your roof and save you money in the long term. You should also consider getting this work done if your asphalt shingles are more than 15 years old as they wont last much longer, even with the step flashing.

If you have installed the step flashing and you are noticing widening cracks in your shingles or large chunks of asphalt starting to break free then it is time for a full roof replacement. This type of work will be quite expensive and if there are any complications or issues with other structural components you may have to pay more or even replace them as well.

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Most asphalt shingle manufacturers offer a 10 year warranty on their products. This means that if your roof starts to fail within this period you are entitled to a replacement at no cost. This type of coverage should be taken into consideration when deciding how to proceed.

As long as you keep on top of maintenance and have the step flashing installed when required, an asphalt shingle roof can last for more than 20 years. It is a very durable, cost effective and functional option.

Installing an Asphalt Shingle Roof – The Jack Method

The most common type of roofing system installed in the United States is a “built up roof”, or “BUR”. Invented in the 1800’s, the BUR is still the most popular because it is cheap, durable and requires very little skill to install. The most common type of BUR is the “asphalt shingle roof”, which has been manufactured under a wide range of different brands and names. The process of installing one of these roofs is called the “Jack Method” named after its inventor, and involves nailing a series of overlapping layers of asphalt shingles from the bottom of the roof to the top, each layer covering the previous one.

Before installation can begin you must purchase the asphalt shingles, roofing felt, roof joists and nails. In most areas of the country, asphalt shingles are only available from a select number of manufacturers and your supplier will only stock a few different types. You will need to decide on the colour, shape and quality of your shingles before you begin. The most common shingle is the “architectural” style which has a rectangular shape with rounded corners.

The cheapest are the “genuine” or “builder’s” grade, and these have a very rough finish and less durable composition. Better quality shingles have a smoother finish and better seal to prevent weather damage, so in most cases the better quality shingles are well worth the extra expense.

You will also need to purchase roofing felt to lay under your shingles. Felt is a layer of material that protects the layers of a BUR from the elements. There are several types available, but you should use the type known as “builder’s felt” because it provides the best quality for the price. Also required will be “underlayment”, which is a special material used to seal seams in the felt and provide an extra layer of protection.

You will also need wood to construct the roof frame, known as joists. These are the horizontal boards that support the weight of the roof and distribute it evenly across the walls of your home. The size and quantity of joists required depends on the size of your roof and the distance between the walls, so your supplier will be able to calculate this for you. Joists are typically sold either “assembled” (the ends are joined together by a metal plate), or “unassembled”.

Unassembled joists are much cheaper, but require the buyer to assemble them before use. This involves screwing the long, bare wooden pieces together once you get them home. Joists can also be made from treated wood, which provides extra protection against termites and wood rot.

Finally you will need nails. While most types of nails are suitable, you should use “ring shank” nails because they are the strongest.

Once your supplies have arrived, it’s time to begin construction. Lay out the bottom layer of your roof, using your felt and underlayment to create a solid foundation for the rest of the roof to be built on top. Begin laying overlapping layers of shingles from the bottom up, and work from the center outwards. You must take care to trim and fit each layer so there are no spaces or gaps along the edges, and be sure the shingles you lay in the center extend past those at the edges.

Continue working your way up, laying three or four layers at a time and then returning to add a new layer of felt and underlayment before continuing. When you reach the top of the roof, trim the layers so they overhang evenly on all sides.

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When the roof is fully completed, begin installing the trim. This involves placing wood around the edges of the roof, overlapping the shingles and sealing them in place with caulking to hide the edges and give the roof a finished appearance. Finally, add the ridge caps onto the very top of the roof. Ridge caps are short lengths of triangular wood that prevent water from leaking through the cracks between shingles around the very peak of the roof.

NOTE: Be careful while working on a roof. Falling off can cause serious injury or death.

Now that your roof is finished, you need to build the walls. The first step is to frame out the walls and insert ceiling joists. As with the roof, these joists provide a solid foundation for the weight of the walls and the ceilings. You may need to use treated wood or install plywood sheathing to create a sturdy and durable surface for attachment.

Once the frame is ready, you can begin installing wall panels. These may be sheet metal or manufactured pieces of “panelized” wall or even traditional bricks or stone. You can also use siding such as wood, brick, stone, or metal. The lower portion of the walls will require a relatively narrow piece at the bottom that covers the gap between wall and floor while allowing space for a floor to exist.

Next you will need to add the plumbing and wiring. The best way to do this is to first add electrical outlet boxes to the wall at appropriate intervals, and then add the wires and pipes themselves. If you are not qualified to do these installations, you will need to hire an electrician or plumber to do the work.

Finally, you can add doors and windows. As with other steps in this project, you have a wide variety of choices for your materials and style.

After the walls are finished and the roof is installed, you can start on the cosmetic touches. These include landscaping, paving the driveway, and interior decorating. There is no set order of these steps; do those that appeal to you first. After that, it’s time to move in!

Congratulations on your new home!

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