Metal Roofing

Standing seam is the most common type of metal roofing for today’s commercial and industrial buildings. There are various panel profiles, finishes, fastening systems, and seams or locking mechanisms that account for metal roof system. Typically metal roofing is the longest lasting roof system for any structure and will hold up to the harshest environments. A high performance metal roof system accounts for the following factors: panel movement, flashing details, air flow, and the environment which it will be subject to. Often times there is a misconception that all metal roof panels are the same and that they will perform the same. To perform properly, metal roof systems must be designed correctly, be constructed of tested materials, and be installed properly.
Manufacturers: (Cobra is a contractor, not a product supplier, and does not want to represent that we only work with the following products. The following are commonly used products which Cobra can install.)
       
Thermoplastic Single Ply (TPO, PVC, Elvaloy, Hypalon)
Thermoplastics are cost effective, flexible, reinforced, lightweight, energy efficient, heat welded membrane sheets that can be manufactured to meet a variety of performance requirements. Thermoplastics are best known for their ability to hold up to building movement, environmental contaminants, chemicals, particulates, grease, and moderate roof traffic. Thermoplastics, because they are heat welded, can be installed in a variety of temperature conditions and can produce a superior seam in marginal conditions. TPO is the fastest growing material segment in commercial flat roofing.
Manufacturers: (Cobra is a contractor, not a product supplier, and does not want to represent that we only work with the following products.  The following are commonly used products which Cobra can install.)
      

 

Thermoset Single Ply (EPDM)

Ethylene propylene diene monomer or EPDM is an flexible synthetic rubber that comes in a rolled sheet. EPDM comes as a fully cured rubber that must be sealed using adhesives or tapes. An EPDM sheet can be manufactured with or without reinforcement, comes in 45mil to 90mil sheets, and can be made fire retardant. EPDM is a proven roofing material, but the success of the system relies on a quality installation with careful consideration of the seams and flashings.
Manufacturers: (Cobra is a contractor, not a product supplier, and does not want to represent that we only work with the following products.  The following are commonly used products which Cobra can install.)
   
Garden Roof Systems
Garden roofs are not a totally new idea; however, the green movement has created a much larger demand for garden roofs throughout the country. For many years, garden roofs were installed by simply building a roof system, putting soil on it, and planting grass or plants. Over the years many roofing contractors have experienced some success, but also failures when it came to garden roofs in the Northwest. Because of the increased demand for garden roofs, manufacturers have taken an increased interest in designing garden roof systems that will perform and last. Most garden roof systems today consist of multiple layers that can include: roof membranes, waterproofing, root barriers, protection mats, drainage boards or mats, moisture retention material, and growth medium. There are various assemblies for the different applications depending on the depth of garden, maintenance requirements, climate, and the structural components of the building. Full garden roof systems can now be offered with warranties similar to standard flat roof assemblies. Additionally, there have been drastic advancements in growth medium to account for a wide variety of climate conditions.
There are several advantages to installing garden roofs on commercial structures. Garden roofs can serve as a water retention tool to manage water runoff, are aesthetically appealing, can be used in common area applications, provide the project with additional LEED (Leadership in Energy and Environmental Design) credits, and are healthy for our environment. The largest downside to garden roofs is they are more expensive than traditional roof applications and more costly to maintain.
Manufacturers: (Cobra is a contractor, not a product supplier, and does not want to represent that we only work with the following products.  The following are commonly used products which Cobra can install.)
 
Built Up Roofing (BUR) and Modified Bitumen
Modified roof systems contain bitumen, and are typically reinforced with polyester or fiberglass. Modified systems are known for their tough rubber-like qualities that hold up well in high traffic areas that are prone to physical puncture. Modified sheets are usually coated with mineral granules, and are commonly used for replacement of older BUR systems.
Built up  roof systems or BUR systems have been around for years.  Built of systems as their name refers, are comprised of multiple layers that are commonly adhered with hot asphalt. The most basic BUR system would be layers of felt and asphalt based sheets with a layer of hot asphalt mopped down between layers. All BUR systems have a final cap sheet as the top layer which is most often granulated to provide reflectivity and act as a barrier for the sun.
Manufacturers: (Cobra is a contractor, not a product supplier, and does not want to represent that we only work with the following products.  The following are commonly used products which Cobra can install.)
   
Shingle Roofs
Shingle roofs have been around for centuries in the form of composition, wood, tile, and stone. The classic shingle look is still popular in architectural design, especially on traditional or historic buildings. Roof shingles today can be made of laminate, polymers, wood, stone, tile, steel, aluminum, or often times a composite of multiple materials. Shingle roof systems can vary drastically in price depending on the type of shingle and application type. Today there are multiple shingle options that offer a very similar look. For example, there are metal composite shingles that look like traditional clay tiles, and there are wood and polymer composites that look like stone.
Manufacturers: (Cobra is a contractor, not a product supplier, and does not want to represent that we only work with the following products.  The following are commonly used products which Cobra can install.)
  

 

 

Temporary Roofs
Today’s fast paced construction schedules often demand that the building be “dry” the minute the structure is standing. Due to various factors including weather, multiple trades in one area, safety hazards, design details pending, high roof traffic, etc., it is sometimes not practical to install the permanent roof system early in the project. Cobra can provide a temporary roof system that keeps the building dry and keeps the project on track. Temporary roof systems are not to code, are susceptible to severe weather, are not part of a standard warranty, and will fail if they are used for longer than their intended use; however, the cost of a temporary roof can often be justified in cost savings to keep a project on track or to accelerate the schedule.