Commercial Roofing Contractors - Get a FREE Roof Analysis
Commercial roofing are roofs on business & municipal related buildings such as manufacturing plants, strip malls, retail stores, sports facilities, government related buildings, restaurants, etc. While most of these roofs in Delaware, Maryland, Pennsylvania, Mew Jersey, and Virginia are flat, some are pitched roofs, or domed roofs, some are low-sloped and some are “hanger-style”.
VARIOUS TYPES OF COMMERCIAL ROOFING SYSTEMS
- Flat Roofs
- Single – Ply
- Poly-ISO & Tapered Insulation
- Single Ply, PVC, TPO, EPDM
- BUR – Built Up Roofs
- Commercial Roofing Logistics & Safety
- Metal Roofs
- Roof Coatings
FLAT ROOFING SYSTEMS
Having good commercial Roofing is very important for human life. It protects your employees, customers/clients and you from various problems like rain, dust storm, thunder storm, snow falling etc. Note that the roofs of your commercial building are exposed to various elements 24/7 throughout the year. During the summers, it needs to face the direct heat of the sun and very hot temperature. While, the surface of the roof is exposed to ice and heavy snow for days or weeks in winters. In autumn and spring, it needs to face heavy rain, storm and strong winds. Your commercial roofing suffer more than any other exterior components of the building are exposed so they deserve a special attention. You should never compromise on the maintenance and repair needs of the roofs of your commercial building.
The foremost factor influencing the selection of commercial roofing materials is the durability. The roof of a commercial building is in constant contact with the weather changes. So it should be able to withstand such changes. It must be capable of tackling algae, mildew etc. The best way to determine the durability of the shingles is to have a look at the parent material. The strength of commercial roof largely depends on the material it’s made up of. Flat Commercial roofing materials in Delaware & Tri-State Areas come in a few different types – single ply, built up (made from asphalt or tar), modified bitumen, (SBS / APP), and cold process.
Metal Commercial roofing are also common with industrial buildings with at least 1″ per foot of roof slope. Flat Commercial roofing can last 15 to 45 years, depending upon the materials used, the climate, and the maintenance done while in use.
There are a variety of coatings that are used over existing roofs, but can also be used as a roof in and of itself. It is referred to as “liquid applied roofing”.
Single – Ply Commercial Roofing Systems
EPDM – The most common single ply commercial roofing in Delaware is EPDM rubber roof. EPDM , or ethylene propylene diene monomer (M-class) rubber, EPDM is a rubber membrane, like a giant inner tube, that is typically delivered in rolls 10′ wide by 100′ long. There are three thicknesses, of EPDM: .045″, .060″, .090″.
Some commercial roofings are reinforced with mesh scrim, some are not. Non reinforced commercial roofings are glued down to the substrate using bonding adhesive, while reinforced EPDM is mechanically attached with screws and 3″ steel washers called “plates”. The sheets are bonded together with a sticky, soft, uncured rubber seam tape with two-sided adhesive and primer glue.
“Brooming” is a technique that most roofers use to apply pressure to a EPDM membrane that has just been adhered, to allow the membrane to lay flat and become enmeshed in the bonding adhesive. Some times heavy steel rollers are used to get out any stubborn wrinkles in the membrane.
Sometime EPDM is installed as a “ballasted” system. This type of system where no attachments are made from the membrane to the roof deck, except on the roof perimeter. Loose laid river stone is placed throughout the field area as a ballast, keeping the roof membrane from blowing off.
There are various accessories made of EPDM, that complete the commercial roofing system, sealing every curb, parapet, knee-wall, inside and outside corners, pipe boots and pitch pockets that seal penetrations. While most of the EPDM membrane is “cured” – a heat treating process that toughens the rubber, some of the smaller pieces are “un-cured”. Un-cured membrane is soft and stretchable, and is used to form around curbs and penetrations, keeping out water in these difficult and leak-prone areas.
“Slip Sheets” are used under objects on a roof that do net penetrate the membrane. Slip sheets are just pieces of loose membrane used to protect the installed membrane from objects such as gas lines, satellite dishes, small HVAC units, pavers, and anything on a roof that could damage the membrane.
“Cant Strips” are long, triangular cut pieces used when the membrane transitions from a flat surface to a vertical surface, such as a side wall or “knee” wall. They are typically made from wood fiberboard, but can be made from regular wood or fiberglass. They help the membrane ease the transition and will prevent cracking in those areas as the membrane weathers.
“Water block” is a type of caulking used in single-ply membranes that is used around penetrations, flashings and drains, that remains soft for years, keeping water out in these critical areas.
Delaware's Commercial Roofing Contractors - TPO Roofing Systems
TPO or thermoplastic olefin is another type of single ply membrane used on flat roofs. This is also used in northern Delaware and Maryland, but not as much as EPDM. TPO is more prevalent in the southern USA and south western and western regions of the USA.
The thermoplastic properties of TPO allows the membrane to be heat welded at the seams, rather than glued or seam taped. There are hand heat welders and robotic heat welders that blow very hot air into a seam in a controlled fashion that bond the pieces of TPO together, creating a water-tight seam. The seam is so strong that it is considered a “monolithic” system, meaning that it is like having a one piece roof membrane over the entire roof. In fact, the material itself would pull apart during a strength tests before the seam will pull apart like EPDM, TPO can be adhered with bonding adhesive to the substrate, or mechanically fastened with screws and places. TPO accessories include pitch pockets with pitch pour, inside and outside corners, pipe boots, non reinforced TPO, and cover-tape.
TPO can last up to 20-35 years depending upon the climate, materials thickness, installation and maintenance. After many years, TPO will start to show it’s age by becoming brittle, flaking, and showing hairline cracks when walked up and hail will leave circular marks on it.
PVC is another type of single ply membrane, similar to TPO in that it is heat welded to attached seams and accessories, but not used as much. Mostly for applications requiring a highly grease resistant membranes such as restaurants and factories, due to it’s grease resistant properties. / qualities.
Single ply roofs are typically installed over substrates such as Poly ISO rigid foam insulation board, or fiber board. These substrates can be install over existing roofs, when only 1 layer of current roofing exists. Negating the need for a full tear off of the existing roofs. These substrates can be either bonded to the roof deck with adhesives, or , attached using screws and plates. Screws used can be made for attaching to steel , wood, or concrete roof decks.
#1 Tri-State's Commercial Roofing Contractors - Poly-ISO Insulation and Tapered insulation
Also, poly-ISO rigid foam insulation board not only is a great roof substrate, but is a very effective insulation layer for commercial buildings. Every inch thick of ISO is an R value of 6. It comes in various thicknesses and can be layered to create highly insulated building envelope for all types of commercial activities contained with a building.
POLY ISO can be used to create a roof pitch, to enable proper drainage for roofs that do not have any slope , or are not draining properly. The roof can be pitched in any direction, towards the front or back, either side, or pitch to direct water to drains in various roof areas. Poly-ISO can be used create roof “saddles” or “crickets” for drainage, and drain sumps.
Do your Commercial Roofing System Need Repair or Replacing?
Repairing single ply, PVC, TPO, EPDM roofs is simple for Professional Roofers
The life expectancy of your Commercial or Residential roof depends on several factors; type of roofing, quality of material, and exposure to harsh weather elements among the top. With regular maintenance and normal weathering factors, a roof can last anywhere from 10 – 100 years. Many roofs get pre-maturely torn off and replaced, when some maintenance and restoration work could have been done to save the existing roof instead. Common roofing material such as built up roofing usually lasts 12 – 20 years, metal roofing 15 – 40 years, wood shake or shingles 10 – 40 years, asphalt shingles 15 – 20 years, and specialty material like slate up to 100 years under good conditions.
Leaks start as small cracks in roofing material that may not be visible; water may collect in an adjacent area. To detect such damage, a close inspection of the roof may be necessary.
A certified commercial roofing contractor can be called to avoid further damage to the roof, or personal injury to the homeowner caused by trying to inspect it his or her self. A professional roof inspection should be performed annually; constant weathering by sun, heat, rain, snow, hail, wind, and cold can cause roofing material to break down. A certified roofing contractor will know what to look for.
TPO roofs can be repaired with the right tools and materials. Membrane can be cut out or patched over with newer membrane and heat welded with a hand-welder to existing membrane. Pipe boots and flashing around pipes and penetrations can be cut-out and installed with new pipe boots and flashing. Seams can be gone over with strips of TPO or uncured TPO seam tape and cover-tape. Pipe boots can be sealed with water block and hose clamps around the pipe, with the base welded to the field membrane. Care needs to be taken to thoroughly clean the surface of TPO for it to weld properly. TPO can only be cleaned with weathered membrane cleaner. Soap and water or acetone cannot be used because the TPO will not weld properly with these types of cleaners. Even using non-white rags can cause the TPO not to weld. Probes are used to check all the welds to ensure the weld is sufficient and the repair will last. PVC is also repaired the same way TPO is.
EPDM roofs have different methods for repair. EPDM uses seam tapes, adhesives, uncured flashing for repairs instead of heat welding. Cleaning is also important, but not as much as with the heat welded products.
Both EPDM and TPO can be coated with acrylic thermoplatic roof coatings, for repairing and restorations.
Built up roofs, also known as BUR roofs are created by building up several layers of asphalt, followed by fiberglass embedded felt paper, a layer of asphalt, then a layer of fiberglass embedded felt. These layers can be reapeated many times, but typically they are two, three and four layers thick After the layering, they are then topped with a flood coat of asphalt. Each layer of BUR changes directions by 90 degree. Sometimes gravel is used over the top of BUR roofs, either loose laid or embeded, to increase the life span of a BUR roof and to provide UV reflectivity, and add extra protection from the elements and foot traffic. Asphalt can be applied hot or cold process and can be built up in many layers, or just one. With 3 or 4 being the most common. Coat tar pitch can be used in place of asphalt for an added durability factor.
BUR roofs are an excellent type of roof and have been proven to last the test of time, having been in use since the 1800’s and are still used today. When they do start to wear out, and additional flood coat can be applied or another layer or two felt and asphalt, to enable continuous use for years and years. BUR roofs can last up to 35 years, but begin to show sign of age, deterioration around knee walls, HVAC units, and “field” areas beginning to show the fiberglass strands in the felt.
BUR roofs can be installed over metal, concrete or wood decks, using or existing roofs, using a fiberboard layer or poly ISO first, to create a smooth layer to install the asphalt.
Metal roofs are installed on both commercial and residential buildings, but most often found on commercial buildings. While metal shingles and metal faux “tile” are used on some houses, standing seam metal roofs provide a highly decorative and up-scale look. , Standing seam metal roofs can last up to and over 50 years, when they are maintained properly. More economical metal panel roofs come in a varieties of rib-styles and thicknesses and can be mode in over 25′ lengths. Some have exposed fasteners and some have hidden fasteners. Institutional building often use metal panels roofs. Some that are screws down from the top using self-tapping screws with neoprene rubber washers to prevent leaks.There a high grade industrial metal panels made with standing seam style joints to prevent expose of screws head less leaks over time.
The number one advantage of roofing with metals is that metals are very reflective. The tendency that other materials have which makes them to absorb heat is completely avoided when you use this. They have reflective qualities that will allow them reflect the heat away instead of absorbing them. These will also help you with the bills as they will get reduced. They also come with lightweight materials which are not as heavy as other roofing materials. The result of this is that any little support can hold them into place. Whenever there is rains, and snow, they also have the advantage of allowing these to slide off and not accumulate on the roof.
The next reason why metals are preferred for roofing Sydney is their ability to last as long as possible. Their types of coatings make it possible for them to endure a very long lifespan, and this is to the advantage of all. These metal systems are very easy to install when you are using them on an existing shingle. What you need to do is only to remove the old roof, and then install the new one upon the shingles. There is also the possibility of placing insulation between these before you install. The latter is pointing out that metals are the friendliest to the environment.
Everybody is aware of the need for the preservation of the environment in present day circumstances, and anything that offers any help in this preservation proves to be the best option in almost every sphere of life. But another thing that gives it the edge is that all metal roofing materials are very durable and beautiful in appearance. They have variety of colors to fit whatever design and color you want to give to your house. The most used type of metals for the present day works includes products from zinc, aluminum, copper, and steel and these are the most prevalent types of metal.
Roofing Safety: The hazards and dangers intrinsic to the roofing industry must be respected and planned for. A safety plan and safety mentality must be part of a roof company’s policies and a roofer must respect in order to stay safe up on a roof. OSHA standards and guidelines are good to be family with and follow. Harnesses are used where needed and perimeter flags help roofs stay aware of the edges of the roof while working. Ladders are raised well above the eave line and bungee cords keep the ladder attached to the building and not sliding around. There are many possible problems that your house roofing will encounter over the period of time. May it be a simple leak that requires only a little roof repair work or a complete replacement, it is always necessary that you think about performing it the right way. However, in carrying out any roofing task, it is very crucial that you don’t make even a single mistake. There are some people who would settle on doing things on their own. Doing any roof repair on your own is not a problem at all, but be very sure that you can accomplish it excellently to avoid additional troubles to take place.
But there’s one effective way to be certain of everything, and that is to hire a good roofing contractor to assist you. You might ask why do you really need to get a contractor, and it is really necessary? It is then very important that we take a closer look on the benefits that you can get from getting one.
Commercial Roofing logistics: If you’re looking for roofing contractors for brand spanking new roofing, installations of broken shingles or any types of repairs, then it will help to avoid any costly damages to this particular area of the property to find and hire only the best roofing companies that have a proven good track record of being towards the top of the roofing industry. This is what all customers should expect when getting professional roofing services of roof repairs Cascante All Construction, which makes them a great and wonderful asset for those business and homeowners to have available for all of their roofing needs. Doing work on top of roofs can be logistically challenging. There are various techniques and equipment used to overcome these challenges. Getting roofing materials on roof: Cranes helps with a lot of the heavier items like 500lb rolls of EPDM rubber or TPO. Also, help with a 10′ high 4×8 stacks of poly-ISO insulation, can be rigged and lifted with a crane to place on top of a flat roof, saving hours of time and workers stamina. Flat roof cutters are gas powered cutting mechanic that splice through multiple layers of roofing to prep for removal. They, along with other equipment can be lifted by crane or by roof hoist. Shingles can be deliver to the ridge board of a steep roof using a conveyor – belted truck, and a couple of strong men. One on the truck loading bundles, and one man on the roof, removing the bundles and stacking on the ridge board.
Are you going to need to talk to a roofing contractor sometime in the near future?
Perhaps, you are building a new home or a business and want to have as many eco-friendly elements as possible and have decided that should extend to the roofing materials you use.
If this you, then be sure to talk to Cascante All Construction – Your Local Roofing Contractors Nearest Your Area about some of the latest and greatest trends.