Minimum Roof Slope For Shingles

Minimum Roof Slope For Shingles

One of the things that many homeowners overlook when thinking about the construction, replacement, installation, or repair on a roof is the effects of the slope. While most residential homes retain a standard sloping structure, there are also a few homes that have started to embrace a lower sloped roofing system. Low sloped roofs or flat roofs were more commonly used for commercial properties. However, with the introduction of more and more roofing materials, roofing styles, and modern installation techniques, the use of flat roofs on home properties has been growing.

More commonly, flat or low slope roofs often have metal roofing, instead of more traditional asphalt shingles or cedar shakes. However, this doesn’t mean that flat roofs are unable to support roofing shingles. 

Roofing shingles can still be installed on a low sloped roof, provided that minimum roof slope for shingles as met the requirements. In order for a roofer to properly install most types of shingles on a roof, the roof should have a minimum slope of 2/12. This would be a slope angled at around 9-degrees parallel to the ground. When roofs are set too low, shingles may be attached, but this will create a tendency for a roof to pool water since rain and other debris will not be able to run down the roof.

Low sloped roofs also have specific instructions when it comes to shingle installation. Standard attachment of shingles to the roof deck can be applied as long as the roof slope is above a 4/12 measure. But when the slope is lower, a few extra measures will ensure that the roof will still be in good condition after installation. For a roof with a 3/12 slope, for example. An additional layer of asphalt saturated felt paper should be added. Another alternative would be to use another layer of an ice and water shield right below the layer of roofing shingles. 

Despite these precautionary measures, most roofers would still recommend using other roofing materials in place of shingles if your roof has a low slope. This is because the roof slope is what enables water to flow down the roof and into the gutters, or at least away from the roof. When the slope is too low and water starts to stand on certain areas of your roof, this can compromise the entire structure since flooding can cause damage to the interior structure; the water will seep into the roof and the added weight can also damage the roof support.

However, many people still use low slope roofs for their homes because of the advantages that this type of roofing presents. 

Advantages of Low Slope Roofs

Homes with low slope roofs have the benefit of having more space. If installed with strong materials, a flat roof will be able to support HVAC systems. Attics are also no longer needed when you have a flat roof, which means that heating and cooling systems will be more efficient in your home. Additionally, a flat roof can be easier to maintain since it is safer for roofers to move around the top of the roof. Unlike steep roofing systems where special equipment may be necessary to ensure that no roofer falls off the side of your property, flat or low slope roofs are safer and, thus, easier to clean and repair.

Another advantage that you’ll definitely notice is that flat roofs are cheaper to install. This is due to two main things: flat roofs don’t need as much material as high pitched roofing, and the structure is also much easier to construct. This means you spend less on materials and on the cost of labor as well.

Despite all of these advantages, having a low slope roof can also be disadvantageous. The main problem is that there are only a few materials that most roofers would recommend for flat roofing systems. This is mainly because of the lack of a higher pitch or slope means that the roof is unable to direct the flow of the water away from the home. This means that materials, such as metal roofs, are often recommended.

While you can still install shingles on a low sloped roof, it is best to add a bit of a slope so your roof can at least reach the minimum slope requirement of 2/12. If possible, adding a bit more slope can be many times more beneficial and can also prevent major damage to your roofing Doylestown PA in the long run. 

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What Is An Architectural Roof

What Is An Architectural Roof

Since medieval times, European homes have used shingles for their roofs as a protective barrier against strong winds, rain, and accumulating snow. At the present moment, shingles have improved since then and are one of the staples for roofing materials. One of the most prevalent and readily-available roofing shingles in the market are asphalt shingles. Aside from being cheap, cost-effective, and easily replaceable, asphalt shingles also do have a moderate amount of durability.

One of the downsides to asphalt shingles is that it has a very limited lifespan of 15 – 20 years which means that a roofing specialist needs to constantly check on this type of roofing material. Constant roof replacements and repairs will eventually cause homeowners thousands of dollars. Architectural shingles were the answer to the short lifespan and limited durability of asphalt shingles. In contrast, architectural roofs had a curbed and three-dimensional look while also having an extended lifespan and more durability.

But before we get into what is an architectural roof and why we should choose it over other different designs, we have to first look into the unique characteristic of this material.

Architectural Shingles

During the 1980s, asphalt shingles were one of the most prevalent roofing materials in the market and most of the time, you’ll see two-thirds of the residential homes in the United States have asphalt shingles as roofing materials. Architectural shingles were developed as a way of addressing the limited lifespan of asphalt shingles which would only last 15-20 years.

As the name suggests, architectural shingles got its name from the three-dimensional look that it evokes. Compared to the flat two-dimensional effect of conventional shingles, architectural shingles are specially designed in evoking more architectural interest for your roof through the 3-D design.

Laminated Shingles

One of the most preferred architectural shingles is laminated shingles.  It’s engineered in focusing on the contours of each of the shingles. The emphasis on the cut and thickness of each of the individual shingles gives these types of shingles a three-dimensional curb appeal.

The cost of laminated shingles will vary depending on the overall quality of the product. In most cases, sturdier and long-lasting shingles tend to have a heftier price compared to low-quality ones. There might be some laminated shingles that are cheaper than others, but it’s still expensive and highly-sought-after. It might take some time for you to procure the right materials since it is also rare. If you’re looking for this material, you can always consult your local roofing specialist first.

Why Use Architectural Shingles?

Wind Resistance

Architectural shingles are 1.5 times heavier than asphalt shingles. This type of roofing can hold down your roof against strong winds. Properly installed mountings and nails can increase its resistance against high winds. Make sure you contact a roofing specialist if your roof is too heavy for your support structures.

Increased Durability

The mineral granule compositions of an architectural roof have created a defensive matrix that will evenly distribute kinetic energy towards the surrounding shingles if force is applied. This is a good way of reducing damages caused by animals or roofers walking on your roof or even impacts from devastating hail storms.

Better Insulation

Using architectural shingles can cut energy costs and will help lessen the use of HVAC equipment. In colder states, architectural shingles can help retain heat while also deflecting off cold temperatures from your roof. The absorption of heat can also help prevent the formation of ice dams.

Having a good amount of insulation can help keep moisture off your roof’s interiors which might become molds and mildews which tend to chip away at the health of your roof.

Longer Lifespan

Being made of some of the best composite materials in the market has made architectural shingles one of the most highly sought-after materials in the market. Having a lifespan of 35 – 40 years under the right conditions means that the chance of replacement is quite rare.

Another way of telling that this type of material has a longer lifespan is the warranty. Usually, manufacturers will have longer warranties for high-quality products since they are confident that this will last longer.

Ultimately, architectural shingles are one of the best ways of increasing the aesthetic value of your roofing Doylestown PA. Architectural shingles can help extend the lifespan of your roof while mitigating damages from the weather. Having a professional roofing contractor can also help extend the lifespan of your roof. Regular maintenance and repairs can also improve your roof’s health.

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In Roofing What Is A Square

In Roofing What Is A Square

When you’re planning out and talking to your roofing specialist, you’ll need to know all the right words and jargon so that you won’t be left out. Installing and replacing your roof can be one of the most stressful processes in the roofing industry, but it is still a necessity that homeowners have to work on. In this case, knowing your measurements and your terms during a roofing process can save you time and energy.

A direct line of communication is paramount in having a well-planned and executed roof. The best way of making sure that both parties are aware of the measurements and plans is if they are both aware of the terms in the roofing industry.

But before we define and crunch in some of the numbers for the measurements, we have to first look into the steps in measuring our roof.

Steps In Measuring A Square?

Safety First

We want to make sure that there will be no injuries when we’re going to be measuring our roof. Since we have to get on top of our roof to measure it, we have to first take the necessary precautions.

Before anything else, it’s best to have a ladder that’s placed on hard and stable ground. Next, use rubber boots or shoes that have good traction. If you think that there are certain parts of your roof that are sensitive to shifts in weight, it’s best to stay clear from those areas.


Once you’ve reached your roof, you can measure the length and the width of everything with a tape measure. It’s best to take precautions when walking around since shingles and roofing materials can easily fall off.


Finally, multiply the length and the width of each plane so you can determine the footage. Adding everything together will give you the total square footage.

How Big Is A Square And What Are The Applications?

To make things as simple as possible, 1 square is 100 square feet. The process and method of getting this measurement will not matter as long as you arrive with the same conclusion. However, there are different ways of translating square roofings towards more coherent numbers. For example, a 10 x 10 feet is equivalent to 100 square feet in the same way that 5 feet x 20 feet are also equivalent to 100 feet.

If we’re going to be measuring squares through roofing materials, 3 bundles of conventional shingles will usually comprise a square. Shingles that are 40 yards in the area will take up 4 bundles a square. wooden shakes will take up 5 bundles a square. On the other hand, wooden shingles will have 4 bundles per square roofing.

If we’re talking about other roofing materials, roofing felts will come in a wide variety of sizes and coverage. Usually, bitumen will be 1 square for each roll. The cap sheet is 1 square of each of the rolls. 1 piece clay tiles will have 80 to 90 pieces per square roofing while 2-piece clay tiles will have 160 and up for square.

If you think that measuring the square roofing is overwhelming and taking too much work, you can always consult your professional roofing specialist as they can give the most definite answers when it comes to measurements.

Roofing Pitch And Roofing Square

Calculating for the square roof area with the roof’s pitch is one of the more complicated parts of the measurement. First, we have to measure the pitch of the roof and determine whether it’s low, medium, or high. A low pitch is generally defined as having a pitch of 3/12 and lower. Medium pitches are 3/12 to 6/12 and steep pitches will have a pitch of  6/12 and above.

Right after determining the pitch of your roof, you’ll need to climb back to the top while bringing a two-foot level. You have to hold your level outwardly by making it perfectly horizontal from your roof so you’ll be able to balance the bubble in the indicator glass. Next, using a tape measure, you’ll need to determine the inches in between the middle of your level to the roof.

When calculating, you have to use the following constants:

Low Pitch (0.5 – 3/12 pitch): 1.07 x Roofing Squares
Medium Pitch (3/12 – 6/12 pitch): 1.185 x Roofing Squares
High Pitch (6/12 and higher pitch) w: 1.36 x Roofing Squares

There might be a lot of steps that you have to take when measuring your roof, but this will be all worth it. Planning is half the battle and by being able to measure and plan out your roof, you will be able to make an extensive plan on installing and replacing your roofing Doylestown PA.

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single ply membrane flat roof

Single Ply Membrane Flat Roof

Flat roofs have been around for centuries and are quite common among hot and dry areas in the Mediterranean,  the middle east and the southern parts of the American continent. This is because your conventional gabled roof design is specially designed to protect your home from flowing water and strong winds. Homes that are situated in drier climates tend to have flat roofs since there is no threat of water pooling on the rooftop, especially since it does not rain in the first place.

However, as you might see in most modernist designs in urban areas across the United States, you’ll find that flat roofs are getting increasingly prevalent. Even though the United States isn’t exactly dry or warm, flat roofs are still one of the most popular roof designs in the market. So what’s the reason? While we’re at that, let’s also look into single-ply roofing which is one of the most common flat roofing material that you’ll find in your local builder’s depot.

But before we do get into what is single-ply membrane flat roofs and what are the benefits that it entails for your roof, we have to first look into what are the advantages of flat roofs.

Why Use Flat Roofs?

Flat roofs are getting increasingly prevalent among commercial and residential homes in the United States. If you’re living in urbanized areas, you’ll find that most homes tend to have a flat roof since this will give more room for improvement. Moreover, since space is a valuable commodity in urban areas, it’s hard to extend your home horizontally. In most cases, the only way to make extensions to your house or apartment is by building upwards. This is where flat roofs come in handy.

When most contractors think of flat roofs, it’s not necessarily flat since it does have a pitch of 0.5/12 or 1/12 to compensate for rainfall and prevent pooling. Still, the low pitch of these roofs is ideal for installing a variety of different HVAC equipment on your roof. This means that there is more space for airconditioning, venting, and heating equipment.

Single-ply Membrane

For your flat roof, single-ply membrane roofing can provide you with a variety of different benefits. As the name of the material suggests, the main characteristic of single-ply roofing is that it can be installed as a single layer. Moreover, this material also demonstrates an incredible amount of flexibility. It’s also quite resistant to UV light and can reflect off excess heat which might penetrate your roof.

Most of the time, you’ll find single-ply roofing with a black or white finish and is usually fastened or installed over insulation material.

Advantages Of Single-ply Membrane

Single-ply roofing, compared to other flat roofing materials, does have a multitude of different advantages that makes it stand out from the rest.

Wide Variety Of Grades

If you’re on a budget, then there are a wide variety of grades that you can choose from. Naturally, the higher the grade, the higher the price. If ever you’re going to be choosing the right quality for your roof, it’s best to think about the long-term. You might be able to save money in the short-term if you buy low-grade materials, but these will inadvertently lead to problems since these roofing materials tend to be less durable.


The cost of single-ply roofing will obviously depend on the grade of the material that’s being used, but it will also depend on the availability of the material in the market. But overall, single-ply roofing is quite cost-effective since it has a good amount of durability while being able to last a long time.

Single-ply membranes are priced per square foot and will cost you around $3 to $5 for each square foot. When it comes to other flat roofing materials, you’ll find the following prices:

EPDM rubber – $1.50 for each square foot

TPO roofing – $1.70 for each square foot

PVC roofing – $1.90 for each square foot

For all these 3 materials, this excludes insulation. Even though these materials are cheap, you’re also thinking about the long-term health of your roof. As such, having the right materials can go a long way.


Being lightweight means that your roofing specialists won’t have any problem installing this type of roofing material and moving it around. Moreover, this can help expedite that installation and roof replacement process which usually takes a week on average.

Great Reflective Properties

If you’re living on warmer states, having a roof that can reflect off excess heat and UV rays can help lessen the energy costs that would usually go into air conditioning. Having a natural means of removing heat can also provide more comfort for the inhabitants of your home.

Since single-ply roofing Doylestown PA also come in darker colors, this is also ideal for homes situated in colder climates as darker colors can help absorb heat. This is especially important in mitigating the formation of ice dams.

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