Signs it’s Time to Repair or Replace your Mechanically Attached Roof

Sooner or later, all roofs need repairs or replacing. Ideally, your flat roof should be replaced before you start to notice things that could add up to costly repairs. Unfortunately, many businesses don’t know the warning signs to look for to determine when their commercial roof needs to be replaced or repaired. The following are a few signs that it’s time to be thinking about call in the experts: The seams and flashings on the roof system are starting to come apart. This is common on older EPDM roof systems where the seams were glued together.   Pin holes appear in the membrane. This occurs to mechanically attached roof systems, fully adhered roof systems and ballasted roof systems over time as the materials begin to break down. Once pin holes start to appear, the membrane is typically beyond effective patching.   Numerous patches exist on the roof system. The more patches that exist on a roof, the harder it is to continue patching a roof, as new patches start getting applied over old patches instead of the base membrane.   The membrane itself has started to wear down, potentially exposing the scrim. If the scrim is exposed, the membrane is in need of replacement, because the scrim is located in the middle of a reinforced single ply membrane. Once the scrim is exposed, the U/V […]

Benefits of a Mechanically Fastened TPO Roof

Single-ply roofing systems are typically installed one of three ways: fastened mechanically to the roof deck, ballasted with stone or fully adhered with an adhesive. This post looks into the benefits of a mechanically fastened TPO roof. The most important fact is having a good, clean roof substrate, and keeping any loose debris clear of the membrane before installation. Mechanically fastened roofs are by far the most common, dominating around 80% of the market. They can be installed faster and at a lower cost. Builders like them because they can be easily inspected by the manufacturer, who can quickly validate the workmanship by verifying the fastener pattern and their proper installation. On top of most buildings is a metal deck, then a layer of insulation, then the roof. When installing mechanically attached roofs, the TPO membrane roll is laid down and then the screws are driven directly through the insulation boards into the metal deck below. Typically the screws are drilled in at the edge of the membrane roll then covered with the edge of the next sheet as the rolls are successively put down. A watertight seal is then created by heat-welding the membranes together with a hot-air gun. This seals any gaps and creates a single, flat, waterproof surface. There are many benefits to a mechanically fastened TPO roof, which include: Obtainable with […]

Chaffee Roofing Receives Prestigious Carlisle 2015 Excellence in Single-Ply (ESP) award

This year, Chaffee Roofing was awarded the Carlisle Excellence in Single-Ply (ESP) award. This places Chaffee Roofing is the top 1% of the National Roofing Contractors Association of all Carlisle installers. ESP status is given our annually to a small percentage of Carlisle’s most dedicated and professionally minded applicators. Selection into this elite group is based on a company’s volume and quality of Carlisle single-ply commercial roofing systems. Chaffee Roofing is proud to have won this award 12 times since 2001. Chaffee Roofing has installed and warranted 8,790,757 square feet of Carlisle’s single-ply roofing systems over the years and has completed 420 Perfect 10 installations as judged by Carlisle’s final inspection process. A Perfect 10 rating is awarded to a Carlisle roof that is installed to Carlisle’s high standards. Once an installation is complete, a Carlisle field service representative will inspect the roof to determine if it complies with Carlisle’s specifications and details. Upon approval, the roof is deemed a Perfect 10 and is eligible for a warranty. This achievement demonstrates Chaffee Roofing’s dedication to quality for not only our reputation in the commercial roofing industry, but the quality of product delivered to our customers. Carlisle SynTec Systems has been the leader in the commercial single-ply roofing industry for more than 50 years. It continues to lead the roofing industry today by providing its customers […]

Chaffee Lends a “Green Thumb” to Fenway’s Garden Roof

In a recent article Fenway Park announced the creation of a new rooftop garden behind gate A in the most historic section of the ball park, named “Fenway Farms”. The 5,000-square-foot roof space will generate an estimated 4,000 pounds of produce annually, and will be used in food sold at the park, including dishes served at the EMC Club, the exclusive restaurant and seating area located behind home plate. Green (vegetated) roofs have been in existence since ancient times. The first known historical references to manmade gardens above grade were the ziggurats (stone pyramidal stepped towers) of ancient Mesopotamia, built from the fourth millennium until around 600 B.C. In France, gardens planted in the 13th Century thrive atop a Benedictine abbey. Norwegians developed sod roofs centuries ago as a means of thermally insulating their buildings. In fact, sod homes are still used as protection against extremely cold winters in Norway and the United States. Five roof gardens were installed atop the seventh floor of the Rockefeller Center in New York City, New York, between 1933 and 1936. And while Fenway Farns itself is getting plenty of press, many people don’t realize the work and planning that goes into creating the roof that can sustain such an agricultural accomplishment. But Chaffee Roofing did. In 2013, Chaffee Roofing replaced and improved the roof behind Gate A, ensuring […]

New 2014 Polyisocyanurate “R” Values

On January 1st, 2014, the Long-Term Thermal Resistance values (LTTR ) or “R” value for polyisocyanurate insulation will be reduced from 6 per inch to 5.6 per inch. To make things more confusing, the “R” value per inch is not consistent. The thicker the insulation, the greater the “R” value per inch. So, 1” polyisocyanurate insulation will have an “R” value of 5.6, where an identical 1.5” sheet will have an “R” value of 5.7 per inch. The following is a table comparing the old “R” values to the new “R” values: One layer of rigid insulation Thickness Prior to 2014 “R” Values After 2014 “R” Values LTTR Value “R” per inch LTTR Value “R” per inch 1” 6.0 6.0 5.6 5.7 1.5” 9.0 6.0 8.6 5.7 2” 12.1 6.1 11.4 5.8 3” 18.5 6.2 17.4 5.8 4” 25.0 6.2 23.6 5.9 Two Layers of rigid insulation “R” Value Prior to 2014 Thickness After 2014 Thickness 15 2 layers of: 1.3” 2 layers of: 1.4” 20 2 layers of: 1.7” 2 layers of: 1.8” 25 2 layers of: 2.1” 2 layers of: 2.2” 30 2 layers of: 2.5” 2 layers of: 2.6” 35 2 layers of: 2.9” 2 layers of: 3.1” 40 2 layers of: 3.3” 2 layers of: 3.5” According to Hunter Panels, one of the leading manufacturers of rigid polyisocyanyurate insulation, the reason […]

“R”=25, The New Rhode Island Flat Roofing Standard

In the middle of 2013, Rhode Island’s “R” value requirements for new flat roof systems changed from a minimum of 20 to a minimum of 25. As before, this only applies to instances where the existing roof system is removed, not situations where a new roof is installed over an existing roof. While many building inspectors in Rhode Island are not yet enforcing the new minimum “R” value requirements, as time marches on, it will become more and more common. And, Massachusetts is talking about enacting the same requirements state wide. To make things more confusing, beginning in 2014, the “R” value of polyisocyanurate insulation, the most common form of rigid insulation used in flat roofing, was decreased due to new testing standards. With the “R” value of insulation going down and the minimum “R” value going up, a decent amount of insulation will need to be added to the roof assembly. Prior to January 1st, 2014, 1 layer of 4” polyisocyanurate insulation was required to meet an “R” value of 25 or 2 layers of 2.1” to achieve the same “R” value. After January 1, 2014, 1 layer of 4.25” polyisocyanurate insulation will be required to meet an “R” value of 25 or 2 layers of 2.2”. Compared to the old minimum “R” value of 20 under the old testing methods, which required 3.3” […]