Archive for the ‘Metal Roofing’ Category

Oil Canning In Metal Roofing: What Is It and Can It Be Fixed?

Thursday, December 1st, 2016

Oil canning in metal roofing is visible waviness, bulking, or rippling of the metal that affects flat surfaces of the roofs between the standing seams. This problem affects all metal panels, including copper, zinc, steel, and aluminum. The degree of the waviness tends to change under different lighting conditions.

What Causes Oil Canning?

This problem occurs due to uneven Oil Canning on Metal Roofing - Classic Metal Roofs LLC stresses during the milling process. Metal roof production mills use rollers to form coils and sheets. These rollers have small gaps that separate them, not allowing proper distribution of the stress. Several types of stresses may contribute to oil canning, such as full center, wavy edge, and camber. Other causes of this problem include uneven roof decking, thermal expansion, improper storage and handling, poor metal roof installation, and movement of the supporting structure.

How Can it Be Prevented?

Coil producers and panel manufacturers oilcanning2
can work to minimize unintentional uneven surfaces by maintaining their tooling. Manufacturers may need to use tension-level coils to eliminate the chore of re-cutting panels. Transporters should cushion the panels and use crates to enhance protection. Spreader bars can be used when carrying bundles of panels, and the panel should be stored on flat surfaces while awaiting installation. During installation, proper alignment and careful measurements of the panels must be taken to eliminate any chances of uneven support. The metal roofing company should also avoid over-driving the fasteners since this can cause waviness. Backer rods installed behind the panels will help eliminate oil canning by providing a slight upward pressure to each panel.

Can Oil Canning Be Fixed?

The short answer is no. Very little can be done to correct oil canning in metal roofing, and there are no metal roof repairs to help with this issue. For extreme cases, the only solution is panel replacement. However, some flat pan tongue-and-groove wall panels that have waviness can be fixed by adjusting the internal supports to put tension on the face of the panel. Most importantly, the metal roofing company must be careful during the installation process. Be sure to hire a qualified metal roof installer, who is up to date on the latest product improvements and installation methods available to insure the threat of oil canning is significantly reduced or altogether eliminated.

unfortunate oil canning situation on a standing seam metal roof

This is not what the homeowner expected to see when the project was completed.



5 Reasons to Have Your Metal Roof Installed Before Winter Hits

Wednesday, November 16th, 2016

With winter around the corner, it is a good idea to install a new metal roof before the blizzards start. Here are five reasons to get it done sooner rather than later.

No Snow On Metal Roof - Classic Metal Roofs, LLC.1. Eliminate Water Damage from Ice and Snow Accumulation on Roof

A strong and durable metal roof resists the damage caused by ice dams and accumulating snow. During unusually harsh winters, the cumulative weight built up on a poorly insulated and ventilated roof can be significant. With watertight installation, metal materials eliminate water infiltration and gradually shed snow and ice, minimizing the burden on top of your house.

2. Energy Saving: A New Roof Will Keep Your Home Better Insulated

With fewer age-related holes and gaps, less heat will escape through an insulated, metal roof. Increasing your energy efficiency means lowering your heating bills – a welcome relief in any season, but especially in winter when heating costs can skyrocket.

Standing Seam Metal Roof In Snow - Classic Metal Roofs, LLC.3. Snow and Ice Can be Directed to Slide Off of Roof

Metal roofing is an especially popular roofing choice in cold and snowy climates. The roofing material is durable and designed to shed ice and snow in a clean sweep. Measures can also be taken to keep large amounts of snow and ice from falling into high-traffic areas, such as walkways and building entrances. For example, snow guards can help to break up large snow and ice chunks to avoid the “avalanche” effect.

4. Environmentally Friendly and Sustainable

While most people may think that automobiles contribute the largest portion of greenhouse gases, it is actually buildings that are responsible for up to 48%. Today’s traditional aluminum metal roofs are coated with a PVDF resin known as Kynar 500. With this coating, metal roofs can reflect from 25% to 97% of the heat gain that would normally be absorbed into a house. There are also recycled roofing options from industrial metal scrap and post-consumer aluminum beverage cans.

Furthermore, with a Lifetime 50-year non-prorated limited warranty from a reputable metal roofing company, you won’t be replacing your roof every 12-20 years. Instead, you will have a sustainable product with covered repairs and replacement for as long as you own your home.

5. Get a Federal Income Tax Credit

Have you heard of the federal income tax credit for energy efficiency? You can get a credit of value up to $500 for residential energy efficiency efforts on your existing home, but it expires on December 31, 2016. This tax benefit is another great reason to take care of your roof before the worst of winter hits.

6 Reasons a Metal Roof Can Increase the Value of Your Home in 2016

Friday, June 3rd, 2016

When considering new roof options for your home, it is easy to disregard metal as a potential material. For many of us, the words “metal roof” prompt mental images of sheds and barns or agricultural storage buildings. However, the metal roofing industry has come a long way in recent years – and the national demand for metal roofs has risen accordingly. Metal roofing options offer numerous benefits that boost the value of your home, making metal roofs worth a second look.

1. Strength

Among roofing material options, metal is an unequaled way to protect your home from severe elements like rain, wind, and hail. Metal roofs are strong enough to walk on without worry – distinct from most asphalt shingle roofs, which would require extra care to keep from damaging the shingles. Home buyers seeking a sturdy source of protection for their home, especially in climates which see severe storms from time to time, will willingly pay extra for the added durability and protection offered by a metal roof. Installation costs may be higher but a metal roof will need fewer repairs and incur lower maintenance expenses over time than a shingle roof. Those lower expected maintenance expenses add to the home’s value.

2. Lifetime Roof

On account of their inherent strength and durability, and thus longevity, metal roofs can significantly raise the value of your home. If properly maintained, a new metal roof can last the lifetime of your home, which means that you – or a prospective buyer – will not have concerns investing in or dealing with the disruption of installing a new roofing system down the line. Many manufacturers offer warranties from 30 to 50 years, in contrast with the average warranties for asphalt shingle roofs, which typically range between 10 and 20 years depending on the climate in your area. (And collecting on such a warranty requires that the installer still be in business and in good financial shape.)

3. Energy Efficient

Metal roofs are very energy efficient, which is one of the driving factors behind the increasing demand for metal roofs. Many people have the preconception that metal soaks up the sun’s rays, potentially overheating the home. In fact, metal roofs reflect light, and thus heat, in the summer and help to insulate a property during the winter, allowing homeowners with metal roofs to save up to 25 percent on heating and cooling costs. Such savings are attractive to environmentally conscious shoppers in the real estate market, and could increase a home’s resale value.

4. Reduced Homeowners Insurance

Thanks to the superior durability and resistance to damage of metal roofs, many homeowners insurance carriers are willing to reduce the premiums they charge for homes with these types of roofs – some by as much as 35 percent. The savings vary depending on the climate. Areas, for example, that experience frequent severe weather tend to offer better savings than is the case for homes situated in milder climates. Check with your insurance agent to obtain details.

5. Curb Appeal

Generally speaking, the metal roofing industry has moved far beyond using simple sheet metal. With a wide range of finishes, colors, and styles, metal roofs can be crafted to match the existing aesthetic of your home or to mimic the classic look of a shingle or shake roof. While you may not initially think of a metal roof as the most attractive option to increase the value of your home, with the wealth of available options you can design a roof that adds distinction to the exterior of your property.

6. Increased Market Demand

The aforementioned benefits and a range of additional advantages have led to the increased demand for metal roofing. Home buyers have shown that they are willing to pay more for homes with this durable and aesthetic option installed. Adding a metal roof to your home can increase your property’s value by one to six percent overall.

With its superior durability, classic appearance, energy efficiency, and more, metal roofing is certainly worth consideration by anyone roofing their home. Knowing that your investment in a metal roof will be reflected in an increase the value of your home when it comes time to sell reflects and enhances those benefits.

Metal Roofs: Eight Myths Uncovered

Thursday, May 19th, 2016

Myths come and go about metal roofs. The transformations of and improvements to the metal roof product that have occurred over the years render these myths largely obsolete. Following are eight of the today’s most common myths – and answers to them.

1. Metal Roofs Are Ugly

On the contrary, today’s metal materials offer more options than any other kind of roofing on the market. There is a wide range of materials, colors, finishes, and styles available. It is safe to state that aesthetic quality is a strength, not a weakness, of metal roofs today.

2. Metal Roofs Are Noisy

Not true. In fact, these metal roofs installed using modern techniques may be quieter than an asphalt shingle roof. Typically, a metal roof is installed by fastening solid sheathing to an existing roof that already benefits from insulation and attic space beneath it.

3. Hail Damage

Large, heavy hailstones can damage any roof – asphalt, wood, or metal. Normal hailstones do not.

4. Colder in Winter

A metal roof does not affect the temperature of a vented attic in the winter. It is the insulation under the roof and of the attic floor that helps retain a house’s heat in the winter.

5. Hotter in Summer

The exact opposite is true. Based upon the finish, metal roofs reflect much of the solar radiation normally absorbed by an asphalt roof, especially if the roof color is white or another light color. This helps keep a house cooler in the summer.

6. Metal Roofs Attract Lightning

Not correct. Lightning is attracted to the tallest object in the area. The roofing material per se is not a factor. If lighting should strike a metal-roofed house then the metal would conduct the electrical charge. The metal roof would disperse the energy throughout the structure, lessening the possibility of a fire erupting when resistance is encountered and heat then generated when the electrical charge attempts to ground itself. Since metal is not flammable or combustible, it can be a safer roofing option than other materials.

7. Metal Roofs are Expensive

Because the replacement costs of repeat asphalt shingle installations accumulate over the lifetime of a single metal roof, an asphalt roof installation (i.e., multiple asphalt roofs) can cost two to four times the price of a metal roof over the latter’s lifespan. A metal roof will likely cost more up front than one composed of asphalt shingles. But the total cost of roofing when considered over the relevant timeframe militates in favor of the metal roof choice.

8. Metal Roofs Have No Resale Value

Experience indicates otherwise. In fact, metal roofs are highly valued. According to Remodeling Magazine, homes that have been renovated with metal roofing recover 85 percent of costs nationally – and up to 95 percent for homes in the eastern U.S. Home buyers are well aware of the value a metal roof adds and are willing to adjust their offering prices accordingly

Cedar Roofing – Old World Charm, New World Challenges

Thursday, January 8th, 2015

If you are thinking of having a new cedar roof installed in order to create that Old World charm, or replacing an existing roof with cedar, you may wish to reconsider. Cedar does evoke a warm feeling of simpler times and cottage-like qualities as no other building material does. Cedar siding and roofing blends well into the countryside landscape and compliments the natural beauty of its surroundings. However, time is cedar’s mortal enemy. And like everything else, the Earth eventually reclaims what belongs to it.

There are three types of cedar in use: Western Red Cedar (the most common), White, and Alaskan Yellow Cedar. Preparing cedar for installation can be handled in one of two ways: It can be installed “green,” meaning freshly cut and installed without a drying process, or it can be installed following a drying process using an air or kiln dried method. A majority of cedar is dried prior to installation, and due to the flammable nature of cedar a fire pressure-treated option is commonly used in areas where wildfires are prevalent. Fire ratings of Class C and B are common for cedar, but can achieve a Class B over A when a fire retardant underlayment, such as a fiberglass cap sheet underlayment, is used. In less wildfire-prone areas the cedar can be installed green.

Wood naturally swells when green, alive, or wet, and then shrinks in size after it has cured. Installing green cedar before it has fully cured requires special finesse and expertise. Adjustments for uneven weathering and drying of the cedar must be taken into account in order to achieve a proper fit and finish once the wood naturally shrinks following its exposure to the elements.

Some of the other benefits of cedar, besides being aesthetically pleasing to the eye, are its durability and ability to withstand strong storms. It provides higher insulating R value in colder months and energy efficiency in the warmer months, due to this natural material not absorbing and transferring heat to the home, unlike other roofing materials. Cedar is an eco-friendly material upon disposal, as compared to petroleum-based products – principally asphalt – which offer little insulating value and energy efficiency during the course of their lives. The case for cedar is strong, no doubt, but the New World desires more.

Counting the Costs of Cedar

Cedar has been used in building applications for centuries, primarily because the benefits of local old growth cedar sourcing and availability. Today, cedar is becoming one of the most expensive building materials to use due to availability and quality. Cedar is a hardy natural material, making it more resilient to the elements than other roofing materials if properly maintained. While the Old World charm is there at the beginning of its life on a roof, cedar can weather unacceptably, making it look dirty and old rather quickly. The fibrous surface of cedar when used on roofs encourages plant growth, such as moss, black algae, and mildew. Once this happens, cedar can deteriorate quickly if not rigorously maintained.

Wood is Good, But Not on A Roof

The initial costs of a cedar roof are usually significantly higher than for other roofing materials, and the costs do not diminish once the roof is installed. Annual maintenance treatments are required if the wood is not preserved and left in its natural state. These treatments involve accessing the roof for the application and rinsing off of chemical commercial-grade algaecides and detergents. These maintenance treatments will remove and temporarily inhibit further plant growth that will otherwise naturally occur on cedar roofing. Moreover, this maintenance may be necessary for cedar roof warranties to stand. As is the case with many roofing material warranties only the product itself is warrantied, not the labor involved in installing it.

cedar roof being treated

When a cedar roof is ready for replacement, there are also some more added costs to calculate. Re-roofing over a layer of existing cedar shingles or shake is not possible due to the nature of the material and its installation. State building codes here in New England allow installation on top of up to two layers of roofing materials before a roof needs be stripped off prior to a new one being installed; however, you can rule out plans to re-roof over an existing layer of cedar to save some money: the roof has to come off. Cedar is one of the more difficult roofing materials to remove due to its brittle nature, hence there is more time and labor involved in its removal and disposal. At least disposal charges can be avoided. Old Cedar shingles make great firewood, and you can always burn them.

Cedar Styles and Colors

Cedar roofs come in two looks or styles, but color options for cedar can vary depending upon the species, natural weathering, and if staining is involved.

Each style or look is determined in the manner from which the cedar is cut. A “hand split” cedar block provides a rougher more rustic look, referred to as a shake. A “taper sawn” cedar block provides for a more finished or refined look, called the shingle. Cedar requires yearly maintenance regardless of style and color, as previously explained.

Different species of cedar acquire a cured or dried color tone over time from weathering. Knowing what color tone a cedar roofing material will develop should be considered in the design process. Any cedar that is not properly maintained following the aging process can result in brittle, dark, and cracking shakes or shingles. As you can imagine, different climate zones will also create varying effects on cedar as it ages. Cedar can be stained prior to installation, which may take some of the guesswork out of which color the roof ultimately reaches. Maintaining a uniform finished look of stained cedar on a roof may become challenging, depending on your climate and the various roof sides and orientations.

Cedar Alternatives

Classic Metal Roofs, LLC installs lifetime, energy-efficient, hurricane-rated metal roofs. We work exclusively in aluminum, zinc, and copper. Classic Metal Roofs, LLC has the answer to the dilemma of providing a cost effective, long lasting, worry-free roof.

A simulated look of cedar shake or shingle can be obtained via Classic’s Rustic and Oxford shingle. These aluminum roofs mimic the look that cedar roofs provide without the hassle and costs of yearly maintenance and early replacement. Further, these lifetime, energy-efficient, hurricane-rated metal roofs are available in numerous color choices for both the Rustic (Shake) and Oxford (Shingle).

Antique cape, cedar shingles replaced with the Rustic “shake”

Contextually, sometimes a period home – contemporary or modern – will benefit from one of our standing seam roofs, or a combination of standing seam and shingle, where a faux cedar metal roof alone would not be appropriate.

The bottom line is that we have numerous design options at hand via our many metal roofing products. If you would like to consult a roofing professional about your project, please contact us today.