How Heat Welding Works On TPO/PVC Membrane

Single-ply roofing materials have become one of the most popular roofing for many reasons: flexibility, durability, lightweight, ease of installation, ease of maintenance, and energy efficiency. The single-ply roof membranes are classified as thermoplastic materials. One of the most important benefits of thermoplastic materials is the ability to heat weld seams together into permanent seams. So, let’s dive right in on how heat welding works on TPO/PVC membranes. In heat welding on TPO/PVC membrane, heat sealing joins thermoplastic films that typically range from 36 mills to 80 mills, depending on the membrane and manufacturer. On TPO/PVC roof systems, heat welding is completed using hot-air welding. This is typically done using a handheld tool or an automatic computerized machine.  The automatic computerized machine, which is commonly known as a “robot” or “dog”, is used on field seams and areas that are more wide open. This machine is larger, so it can’t fit in tight spaces, such as under rooftop units or around congested spaces.  The handheld welder is used on areas that are too small to fit the larger automatic welder, for example, on rooftop units, vent pipes, and congested spaces. They can also be used on “Start / Stop” locations, which is where the automatic welder begins and finishes its welding process. Key Factors of Heat Welding on TPO/PVC Membrane While solvent welding is a […]

How Does Heat Welding Work

Heat welding is a fabrication process whereby two or more parts fuse using heat, pressure, or both, forming a joint as the parts cool. Heat welding is mainly used on metals and thermoplastics but can be used on wood. The completed welded joint is referred to as a weldment. Some materials in heat welding require the use of specific techniques and processes. Many materials are considered unweldable, a term that’s descriptive and useful in engineering. The parts that are joined together during heat welding are known as parent materials. The material added to form the joint is called consumable or filler. These materials may see them referred to as parent plate, filler, pipe, or consumable electrode (for arc welding). The main steps of heat welding include: Contact Chaffee Roofing for any inquiries about heat welding solutions.

Benefits of EPDM “Rubber” Roofing

EPDM, also called Ethylene Propylene Diene Monomer, is a popular roofing material commonly used in commercial roofing. This single-ply membrane, or simply “rubber roofing,” has been used in low-slope roofing applications for decades, thus protecting residential and commercial structures. Why is EPDM roofing popular, and why should you consider it? Experts in commercial and residential roofing share the benefits of EPDM rubber roofing: 1. Affordability Typical EPDM roofing material is cheaper compared to other commercial and residential roofing materials such as Metal, PVC, Modified and Built Up Roofing. As a single-ply material, it is easy to install, thus lowering installation costs. In addition, the material can sometimes be recycled for new EPDM roofing. 2. Maintenance EPDM requires little maintenance compared to other roofing materials. After it is installed, a once a year walk through to check the roof and keep the drains, scuppers and gutter clean is all you really need. As with any roof system, scheduling a maintenance regimen can prolong its lifespan. 3. Eco-friendly Non-reinforced EPDM membranes can sometimes be recycled. Ballasted EPDM roof systems are the most ideal, since there are no adhesives on them to interfere with the recycling process. Recycled EPDM can be used in a variety of other rubber products, like playground rubber mulch, yoga matts, and a variety of other products. This makes it one of the most […]

History of Asbestos in Flat Roofing

Asbestos is a naturally occurring fibrous silicate substance. Scientists discovered asbestos material in debris dating back to the Stone Age Period, around 700,000 years ago. Asbestos’ hair-like fibers were being used as wicks in lamps and candles dating back to 4000 BC. Between 2000-3000 BC, emboldened Pharaoh’s bodies were covered with asbestos cloth to prevent deterioration. In Finland, clay pots dating back to 2000 BC had asbestos fiber believed to have made the pots durable and fire-resistant. Asbestos was adopted as a choice roofing material at the start of the 19th century. However, it is believed that scientists began experimenting by adding asbestos to asphalt and cement in the late 1700s. With a growing adoption by people and businesses, asbestos cement rose to popularity during World War II to design inexpensive, durable military housing. A variety of developments leading to the industrial revolution led to the asbestos imitation of more expensive materials such as shingles, stone, and wood sliding. This transformation catapulted asbestos as an alternative renovation material in the building industry and semi-skilled professions like plumbing and roofing. Adoption of Asbestos in Flat Roofing Early roofing materials had many issues related to durability, safety, and availability. Wood shakes were highly flammable, posing a safety threat to home and business owners. And so were the bare asphalt shingles. Concrete tile roofing materials were cumbersome and […]

Bonding Adhesive and Its Smell

When roofing contractors use bonding adhesives on a commercial building with a flat or low-sloped roof, you can usually smell it as soon as the can opens! To adhere materials to a roof, like EPDM membranes, synthetic rubber, tar paper, insulation boards, felt, and various other materials, roofing contractors use a variety of different adhesives. However, many standard roof bonding adhesive methods require cold application methods. Contrary to popular belief, it isn’t the heat-applied adhesives that smell the most. it’s the cold-applied adhesives. These cold application methods are usually brushed, rolled, or sprayed onto the roof.  Oftentimes these products let out a foul odor, which lasts until the product has dried and set. The unpleasant smells caused by the application of roofing bonding adhesive can lower the indoor air quality of every building in the vicinity. Roof bonding adhesive fumes can be so concentrated that they linger in the air for a long time. This is especially true on buildings where rooftop units are pulling air into the building from the roof. Odors and foul smells can disrupt the building’s occupants. So, how can the vapors, fumes, and unpleasant smells generated by roof bonding adhesives be mitigated? Here are three tips. Related: 4 Reasons To Avoid Built-Up Roof Systems Planning and Logistics Roofing contractors can work early morning or off-hours to maintain indoor air quality […]

4 Reasons to Avoid Built-Up Roof Systems

A built-up roof system, also known as BURS, is a multi-tiered roofing system for flat roofs. Built-up roof systems provide roof protection against the elements with multiple layers of protective systems. A built-up roof system is also known as a tar and gravel roof. The number of layers in the system will depend on the owner’s preferences and usage of the building. Typically, it is installed in 3-5 layers. The more layers, or plies, the stronger the BUR system and the longer it will last. The first layer of a built-up roof system is typically a base felt paper. This prevents the BUR system from being adhered directly to the structural decking, making removal down the road difficult to impossible. Then, alternating layers of asphalt/tar are applied between additional layers of felt paper. Install felt sheet, mop on a layer of asphalt, repeat. The top layer of a built-up roof system usually consists of gravel. In a built-up roof system, gravel acts as UV protection, which will prevent the asphalt roof system from cracking and breaking apart over time. In some cases, coatings are applied instead of P-stone. This serves the same purpose, UV protection. However, in some cases, they also serve as a heat-reflective top layer that reflects sunlight and heat away from a building to help keep it cool and lower energy bills. […]

Ballasted Roof Repair

Commercial buildings have been using ballasted roofs since the roofing method became more widespread in the 1960s. Ballasted roofs offer building owners a wide variety of benefits and are easier to install than other roofing methods. A ballasted roof is an unmoored roofing system secured in place on flat roofs by the weight of small rocks, gravel, and pebbles. So, for example, if you had EPDM membrane installed on your commercial roof, the only thing holding it in place would be the accumulated weight of the small rocks covering it. Ballasted roofs are not an ad hoc or hastily constructed roofing design method. On the contrary, extensive wind tunnel testing conducted over decades has proven that rocks used as ballast can keep unmoored roofing systems in place in the rain, wind, and other forms of inclement weather. Aesthetically pleasing rocks as roof ballast are plentiful, affordable to procure, and relatively quick to install than other roofing methods. In addition, rocks don’t burn, so a ballasted roof can act as a natural fire retardant. And light-colored roof ballast can reflect heat energy from the sun, saving money on energy costs. Additionally, ballasted roofs provide excellent UV protection, since they cover the roof system from the sun’s UV rays. Related: Adding On Or Renovating Your Commercial Property? Consider Upgrading Your Roof Easy to Replace Ballasted roof repair […]

Adding On or Renovating Your Commercial Property? Consider Upgrading Your Roof

The average roof will last 15 to 30 years in the United States. However, if you own a commercial building, you should not take anything for granted. It would be best to regularly inspect your roof and take proactive steps in renovating and upgrading your roof before problems develop. Here are three ideas on renovating or upgrading your roof to save money and improve the aesthetics of your commercial property. Related: EPDM Warranties Explained (And Why It’s So Popular) EPDM Over 50% of American buildings have mild to serious mold infiltration problems. Many people think leaky pipes cause expensive, façade damaging and health-endangering mold problems but sometimes, mold can infiltrate your building from the top. It would not take a lot of water infiltration via the roof for a mold problem to get out of control. Ethylene propylene diene monomer, more commonly known as EPDM, is a sheet material made of synthetic rubber. EPDM is used to line flat roofs and most commonly as the lining for artificial ponds because of its durability. EPDM lining is held in place with masonry pavers, ballast, glue, or fastening. It is a lightweight, relatively inexpensive material that offers enhanced insulation. As long as EPDM sheeting is installed expertly, leaks won’t be a commonplace occurrence. If your commercial property is located in a region with colder weather, then the […]

EPDM Warranties Explained (And Why It’s So Popular)

The industry market for waterproofing membranes, like EPDM roofing, was worth $7.5 billion in 2018. The value of the industry is projected to increase to $14 billion by 2026. Considering the explosion in popularity for roofing membranes, especially EPDM roofing membranes, it’s not surprising. According to the EPDM Roofing Association, over one billion square feet of newly installed EPDM roofing is laid down every year.  Over 35% of the entire American roofing industry is concentrated in the EPDM waterproof membrane roofing market. The EPDM roofing market is still growing in Europe but currently commands a 12% share of the roofing market. EPDM roofing is relatively inexpensive to install, environmentally friendly, and designed to last many decades. That is why EPDM warranties are just as popular as the material. Before we explain EPDM warranties, let’s talk briefly about EPDM in general. What is EPDM? EPDM is an acronym that stands for ethylene propylene diene monomer. It is a synthetic and highly durable synthetic form of rubber. If you have ever heard the term, “rubber roof,” it was probably a reference to the EPDM waterproof roofing membrane. EPDM is most commonly used on low-sloping flat roofs on residential and commercial buildings. Flat roofs are multi-tiered structures of complex design with a waterproof membrane at the top, the EPDM materials.  EPDM roofing materials are resistant to extreme weather […]

Low VOC Products in Flat Roofing

Low VOC products have near-zero levels of Volatile Organic Compounds. You will find VOC products in the coatings and adhesives used during the installation or repair of flat roofs. A VOC keeps the compound pliable for longer, which is useful when installing a flat roof on a large building.  Advances in research and technology have brought many low VOC products to the marketplace. Research shows they work as well as the traditional high VOC products. The gasses emitted from VOC products can cause illness. Smells or odors may enter the building when completing repairs or installation—a major inconvenience.  At Chaffee Roofing, we offer low VOC alternatives for working on your flat roof. The use of low VOC products complies with government regulations and is better for the environment.  Some of the low VOC products used in flat roofing are: A silicone coating for waterproofing the flat roof Low VOC primers and adhesives that do the work Elastomeric coatings for all-round protection Let’s take a closer look at each point. A silicone coating for waterproofing the flat roof Water damage can be a big problem with flat roofs. You can take precautions, though, and waterproofing is the first line of defense. A silicone roof coating is applied by using a brush, spray, or roller. It goes on smoothly and is low in VOC, making silicone coating […]