Can you put a metal roof over a shingle roof?
Unless building codes require it, there is usually no need to tear off the old roof. Installing metal roofing over shingles is the best solution. The metal used for the roof can be tin, copper, aluminum or steel.
How do you install metal roofing over shingles?
- Drip edge at the eves. ...
- Using your cap nails, secure the deck protection to the roof. ...
- Then, install new flashing (metal flashing is often called "drip edge" along the bottom of the roof near your gutters) and starter shingles at the edges.
- Nail the drip edge in place using your hammer and roofing nails. ...
Can you lay new roof shingles over old?
It is not uncommon for homeowners to roof over existing shingles; this is called reroofing. New shingles can be installed or laid over the old ones when a new roof replacement comes instead of tearing off the existing roof.
How to install metal roofing over shingles?
Step-by-step Guide
- Get a precise measurement of your roof surface. Getting an accurate measurement will help you determine the exact amount of material needed. ...
- Lay down roofing felt over the entire roof. Your goal with the roofing felt is to make sure everything is as straight and as square as possible.
- Start putting the metal panels into place. ...
What is rolled roofing?
How many square feet are in a roll of shingles?
What is the least expensive roofing material?
What is the best roofing material for a low slope roof?
What are the disadvantages of rolled roofing?
How big is a roll of rolled roofing?
When were asphalt shingles first used?
See 2 more
Can you roof over rolled roofing?
Rolled roofing is very adaptable and can be cut into 12-inch by 36-inch strips to act as hips and ridges or 9-inch strips for eaves and rakes. If removing your current shingles is a problem, it is usually permissible to re-roof over your existing roof with rolled roofing.
Is roll roofing better than shingles?
Asphalt shingles are more durable than asphalt roll roofing. They can last for up to 50 years, while asphalt roll roofing typically only lasts for 20–30 years. Asphalt shingles are also more resistant to wind and hail damage.
Can roll roofing be used as underlayment?
You can't judge a book by looking at the cover and you can't judge a roofing material just because it is sold in a roll. At first glance roll roofing and saturated felt roof underlayment look very similar. But the similarity ends there.
Can I put new rolled roofing over old rolled roofing?
Technically, you can install roll roofing over the top of existing shingles. However, when it comes to almost any roofing project, it's best to avoid roof layovers and opt for a clean base instead. It is also a good idea to install drip edge flashing before laying the rolled roof.
What is the life expectancy of rolled roofing?
5 to 10 yearsAsphalt Roll Roof Average Lifespan However, asphalt roll isn't the best choice for most homes due to its very short lifespan. The average lifespan of asphalt roll roofing is only 5 to 10 years.
Is a rolled roof cheaper than shingles?
Roll roofing is cheaper than shingles. Since roll roofing is also easier to install, the total labor costs that roof contractors charge will likely be less than for installing asphalt shingles.
What is the best underlayment for rolled roofing?
The Best Roof Underlayments of 2022Gaf WeatherWatch Ice & Water Leak Barrier.Best Overall. Gaf FeltBuster Synthetic Roofing Felt.Best Bang for the Buck. Grip-Rite ShingleLayment-15 GRE Roofing Underlayment.Upgrade Pick. GCP Grace Ice & Water Shield HT.Best Felt. ... Best Rubberized. ... Best Synthetic. ... Also Consider.More items...•
Do you need felt for roll roofing?
Roll roofing is often installed over bare wood sheathing or sheathing that has been painted with a primer. Applying roofing felt first will better protect the sheathing against condensation, as well as against leaking. If the roof is sloped, you can use the exposed-nail method.
Do you nail down roll roofing?
Do you nail down roll roofing? Nails are typically used to secure this type of roof. You can nail the separate layers by hammering the nails in 10-inch intervals across the roof. After that, you'll want to use cement to cover them and seal them in place.
How do you remove old rolled roofing?
How to Remove Rolled RoofingContact your local waste management company to have a dumpster delivered to your house. ... Remove the ridge shingles or roofing cap. ... Pry up the edges of the rolled roofing from the roof with a pry bar, beginning at the upper layer. ... Roll the roofing as you pull up the nails.More items...
What is the cheapest roofing option?
Asphalt shinglesAsphalt shingles are the most common roofing material used in the US due to their lower cost and ease of installation. They are generally the most affordable option, though the cost can vary widely depending on the exact type of shingles used.
How do you replace a rolled roof?
Six Steps to Install Roll RoofingStep 1: Prepare the Roof. In preparation for installing the roofing material, you first want to clean the roof. ... Step 2: Apply Roofing Cement to the Edges. ... Step 3: Attach the Base Sheet. ... Step 4: Attach the Second Sheet. ... Step 5: Seal the Vents. ... Step 6: Overlap the Valleys.
Do you nail down roll roofing?
Do you nail down roll roofing? Nails are typically used to secure this type of roof. You can nail the separate layers by hammering the nails in 10-inch intervals across the roof. After that, you'll want to use cement to cover them and seal them in place.
How much is a rolled roof?
The cheapest roll roofing material for flat roofs costs about $30 per square, according to Cost Owl. More expensive roll roofing can cost $100 per square. In roofing terms, a square is 100 square feet. This means you can expect roof replacement costs to be between $1,500 to $3,000 for an average-sized roof.
How long does peel and stick roofing last?
However, because it is a single-ply material you will see signs of deterioration after 5 years. Even though this type of roofing requires replacement in as few as five years; to compensate for its limited and short lifespan, it is the cheapest type of roofing material in the market.
What is the minimum pitch for roll roofing?
As a primary roof covering, roll roofing is used on slopes down to one inch per foot. If the exposed nail method of application is used the minimum required slope is two inches per foot.
What is the difference between rolled and composite shingles?
Composite shingles are heavy and unwieldy. Rolled roofing, by contrast, comes in lighter 75-pound units and is tightly rolled up and sealed. Professional roofers often have cranes or forklifts move conventional shingles from the ground to roof level.
How long does rolled roofing last?
Rolled roofing has a short lifespan of between five and eight years. Compare this to a lifespan of about 20 years or even more for composite shingles. Rolled roofing tends to lose its grains and develop bald spots after only a few years of use.
How big is a roll of rolled roofing?
Rolled roofing (or roll roofing)—also known as MSR—comes in rolls of 100 square feet. Rolled roofing is easy to obtain and can be found at all home improvement stores. One MSR roofing roll is usually about 36 feet long by 36 inches wide. So in terms of quantity, a roofing roll is about the size of one composite shingle square.
What color is rolled roofing?
If you wish to change the color of your roof to something other than black, rolled roofing will not help you. Black MSR is the most common color you will find. Tan, gray, and green are sometimes found, too.
How many inches is rolled roofing?
If you are a do-it-yourselfer, you can move the rolls to the roof by yourself or with the assistance of a partner, no machinery required. Rolled roofing is very adaptable and can be cut into 12-inch by 36-inch strips to act as hips and ridges or 9-inch strips for eaves and rakes.
What is square roofing?
Square is a roofing term that refers to one roofing unit of 100 square feet. The conventional way of roofing a house is with individual composite (asphalt) shingles. Rolled roofing is vaguely similar in that it is also an oil-based asphalt product. But the similarity stops there.
How long does it take for a rolled roof to roll?
Rolled roofing goes down quickly. Unlike shingles, which apply one by one, you can roll out a square of mineral surface rolled roof within minutes.
How wide is a roll roof?
The width of the rolled roofing can vary from 36 to 39 inches (9 1.4 to 99.1 cm) depending on your supplier. Just adjust the above dimensions up 3 inches (7.2 cm) for the chalk line.
What is the pitch of rolled roofing?
Rolled roofing is not recommended for roofs that have a greater than a 2 to 12 pitch. That is, if your roof is 12 units wide it should not be taller than 2 units for rolled roofing.
How far should the first layer of a roof cover the roof?
The first layer should cover the roof as far as the chalk line.
How to measure a roof section?
If your roof is not uniform and has different sections of different sizes, measure 1 section at a time. Multiply each length and width to find the area of each section.
How to measure a roof?
Use a long measuring tape. If your roof is rectangular or square on either side, it's easy to work out the measurements. Measure the length and width and multiply them to find the area of the roof. If your roof is not uniform and has different sections of different sizes, measure 1 section at a time.
Where to read instructions on roofing cement?
Read the instructions on the side of the roofing cement container before you begin.
Who owns Bumble Roofing?
This article was co-authored by David Bitan. David Bitan is a roofing professional, licensed contractor, and the owner and founder of Bumble Roofing based in Southern California.
What is roll roofing?
For a utilitarian solution when appearance isn't as important, consider roll roofing, which is made of materials similar to composition shingles but generally not as durable.
How many inches does a sheet of roofing overlap?
The next sheet overlaps the first by 4 inches or with some types of roll roofing, enough to cover the area that is bare of mineral surfacing. Snap a chalkline indicating the top of the next sheet, roll it out along the line, and drive nails as for the first sheet.
Can you use exposed nails on a flat roof?
If the roof is sloped, you can use the exposed-nail method. For a slightly sloped roof, use the concealed-nail method shown. For a flat or nearly flat roof, use double coverage, although a torch-down modified bitumen or EPDM roof is a better solution.
Can you use metal valley flashing on a roof?
Install drip-edge flashings, roofing felt, and WSU, if needed. You can install metal valley flashing, but it is common to simply apply an 18-inch-wide strip of roll roofing instead. Set it in a bed of roofing cement, smooth out any creases, and drive nails near the edges.
Does roll roofing last longer?
If you install roll roofing using the double-coverage method, it will last longer. Roll roofing is often installed over bare wood sheathing or sheathing that has been painted with a primer. Applying roofing felt first will better protect the sheathing against condensation, as well as against leaking.
Why is rolled roofing so heavy?
Rolled roofing gets heavy fast, and layering it without some sort of separation actually makes each additional layer weaker (Some say due to expansion and contraction, others say due to gassing, etc). The additional weight can cause your deck to sag, ponding water (which causes sagging, which ponds, etc. until it potentially ends in collapse) ...
Why do shingles look wavy?
In my experience as a roofer, putting asphalt shingles over old ones can make the new shingles look wavy, because the old layer is not smooth. I can’t imagine that this makes the new shingles last longer, either.
How much does torch down roofing cost?
Torch down roofing costs range between $365 and $460 for a 1200 square foot area . If you're going for high-grade materials, expect to pay between $850 and $1075 for an area of the same size. Prices for other flat roof materials can vary a great deal depending on region but usually cost less than torch down roofing. Contact your roofing contractor to get an exact estimate.
How much does a square of shingles weigh?
Consider this: The average square of shingles (100 square feet) weighs somewhere between 150 and 225 pounds. A medium house could easily have 12 squares. That’s between 1800 and 2700 pounds extra on your roof. Does that sound like a great idea? Some people worry about snow load, but geez…..
Can you remove old roofing material?
Yes but it is better to remove the old stuff. New roll roofing needs to connect with substrate so a layer on top is a poor choice. Just adds weight.
Can you do roof stripping?
You can physically do it, it really won’t hurt anything if it’s done right. There may be code in your area, those are the people you should be asking, it also effects firefighters who have to breach the roof in a fire. I don’t do roofing but on the last job that had flat roof, a hundred year old building in Brooklyn they stripped the roof and it had to be almost 3” thick. i don’t think they stripped it once in 100 years. I can’t even guess how Much that roofing weighed, 24’x45’ it had to be 5–6 tons at least
Who should look at roof problems?
Without more details or a picture of the problem area, this is only speculation. A contractor or roofer should be able to look at it and determine what the issue is and the best way to fix it.
What is rolled roofing?
The term "rolled roofing" generally refers to a product called "mineral paper," which builders use as a primary roof covering on sloped, residential roofs. Rolled roofing consists of asphalt-bound sheets coated with sand-like granules. Unlike built-up or hot mop roofs, mineral paper roofs do not require a coating of waterproof membrane. However, if mineral paper roofs develop widespread leaks, a coating of waterproof membrane, such as an elastomeric coating, can successfully encapsulate the roof surface and extend the roof covering's life.
Do mineral paper roofs need waterproofing?
Unlike built-up or hot mop roofs, mineral paper roofs do not require a coating of waterproof membrane. However, if mineral paper roofs develop widespread leaks, a coating of waterproof membrane, such as an elastomeric coating, can successfully encapsulate the roof surface and extend the roof covering's life. Advertisement.
Is elastomeric roofing brittle?
Unlike glue and roof patch, elastomeric roof compounds never become brittle, but always remain slightly rubbery and flexible. The compounds' flexibility reduces cracking and splitting by allowing them to expand and contract with the roof's natural movement.
Can you use elastomeric coating on a roof?
Most elastomeric coating manufacturers recommend their products for both temporary and permanent repairs. Additionally, elastomeric compounds are suitable for both small areas, also called "spot-repairs," and whole-roof coats. Many elastomeric coatings are designed to cure under wet conditions. If your compound is designed for wet applications, you can use it to patch roof leaks during prolonged rain. In addition to rolled roofing, elastomeric coating compounds often adhere to metal and masonry surfaces. Therefore, you can use many elastomeric compounds to patch leaks in metal flashing or the joints between flashing and adjacent masonry surfaces, such as brick or concrete walls.
What is rolled roofing?
Rolled roofing is a mineral-surfaced roofing material that comes in rolls and is thinner, less-durable, and cheaper than asphalt shingles. Rolled roofing is one of the easiest and inexpensive roofing materials available for purchase.
How many square feet are in a roll of shingles?
Rolled roofing is a mineral-surfaced roofing material that comes in rolls equaling 100 square feet or 100 individual shingles. However, shingles are roofing materials that come in several types of materials and are 1 square foot. Each roof type has advantages and disadvantages when it comes to its cost, lifespan, and maintenance.
What is the least expensive roofing material?
Rolled roofing is the least expensive roofing material; even the nails are inexpensive. This is also the best product to use when covering low-incline roofs. However, you shouldn’t use it on flat roofs; installing it on a flat roof can lead to leaks. When it comes to installation, rolled roofing can be applied quickly.
What is the best roofing material for a low slope roof?
Rolled roofing material is also often used for low-sloped roofs. If your roof pitch declines up to one inch vertically for every 12 inches horizontally, rolled roofing is a good option. The safest minimum pitch for rolled roof ing is two inches of decline per 12 inches of the horizontal direction.
What are the disadvantages of rolled roofing?
Disadvantages of Rolled Roofing. If you want your roofing color to be something other than black, you may be out of luck. Black rolled roofing is the most common color, but you can find tan, gra y, or green on rare occasions. Rolled roofing is also less durable than traditional shingles.
How big is a roll of rolled roofing?
Once rolled out completely, a roll is typically 36 feet long by 36 inches wide. In terms of quantity, a roofing roll is the same size as one shingle square or 100 square feet.
When were asphalt shingles first used?
Asphalt shingles were first used in 1901 and are a popular roof material for American homes. Furthermore, asphalt shingles are durable, affordable, and come in a variety of textures and colors. There are organic base shingles and fiberglass base shingles.
