A wide range of roofing systems and materials is available to choose from. The right solution for your facility depends on the facilities goals and your budget objectives. Because Foster is certified on every major system, we can select the right system to meet your goals. We aren’t locked into any one system the way a smaller contractor might be.
Backed by state-of-the-art roofing equipment and the latest materials, our highly-skilled roofing professionals are capable of handling any project, regardless of size or complexity.
ARCHITECTURAL SHEET METAL
Architectural sheet metal is the custom fabrication of metal flashings, trim, and sometimes ornate metals utilizing a multitude of materials. The metal types utilized range from conventional metals like steel and aluminum to high-end materials like zinc, copper, lead, and metals with custom colored finishes.
BUILT UP ROOFING
The built-up roofing system is compiled from multiple layers of roofing plies (typically 2 to 4) adhered with adhesive or hot asphalt. The roof system is usually surfaced with a gravel layer embedded in hot asphalt or adhesive but can also be surfaced with a granulized cap sheet or coating. It can be installed over a multitude of roof decks and insulations.
Roof coatings are typically used in a restorative capacity to prolong the lifespan of an existing roof. Roof coatings can be installed over existing modified bitumen roofing systems, built-up roofing, metal roofing, and spray foam roofing. Multi-year manufacturer warranties also are commonly available.
Lightweight insulating concrete (LWIC) is utilized on new and existing facilities as a new substrate for the roofing system. LWIC can be utilized to provide additional insulation to the building envelope and provide positive drainage for the roof. These roof decks are often very advantageous for owners or designers who are considering the sustainability and life-cycle cost of a facility.
Metal roofing systems typically consist of concealed or exposed fastener systems and rely on concealed metal clips attached to the structure, with the majority of the attachment hidden from view. Metal roofing systems have matching metal trim and flashings. These systems one of the longest lasting roof systems available when properly designed and installed.
Modified bitumen roofing systems are multi-ply systems usually consisting of 2-3 layers of a composite roll and surfaced with granules or foils. These systems are typically utilized in low slope roof areas in conjunction with varying insulations and deck systems but are sometimes installed on steep slope substrates.
Single-ply roofing systems typically are sheet membrane products over various insulation boards, and roof decks. Some common single-ply roofing systems are TPO, PVC, and EPDM materials. Typical installation methods include mechanically attached, fully adhered, or ballasted.
STEEP SLOPE ROOFING
Steep-slope roofing is typically considered to be any roof system which has a slope equal to or greater than 3:12 (though in some cases, it is defined as any slope >2:12). Some of these roof systems can be asphalt shingles, wood or cedar shakes and shingles, clay or concrete tile, or various metal or synthetic systems.
TAPERED INSULATION SYSTEMS
The system is an assembly of roof insulation that is sloped to provide primary slope on a roof deck where the existing roof deck does not provide adequate drainage. Slopes typically range from ¼” per foot to ½” per foot. It is utilized on several different roof decks and under most any low slope roofing system.
Waterproofing systems are utilized to prevent the passage of water under hydrostatic conditions (where water is present). System components include a membrane and additional components such as insulation and drainage materials. These are typically below-grade installations but can also include above grade walls, patios, and balconies.
Cool roof surfaces can remain at markedly lower temperatures when exposed to solar heat compared to roofs constructed with traditional non-reflective roofing products. Foster professionals can help assess your needs depending on your building and its geographic location.
The practice of placing windows or other openings and reflective surfaces so that during the day natural light provides effective internal lighting. Particular attention is given to daylighting while designing a building when the aim is to maximize visual comfort or to reduce energy use.
Green or Vegetative Roofs are composed of several layers including an underlying waterproofing system, soil media, and vegetation. Benefits of this system include lower energy costs, LEED recognition, air quality, reduced storm water runoff, and an extended roof life.
A panel exposed to radiation from the sun is used to heat water or, when mounted with solar cells, to produce electricity directly, especially for powering instruments in satellites.
Most frequent questions and answers
There is not one a single best roofing system; each solution should be customized for each project. There are eight major families of roofing. including steep slope (inclusive of shingle, tile, shakes, etc…), built up roofs (inclusive of asphalt and coal tar), modified bitumen roofs (APP and SBS varieties), metal roofs (standing seam, architectural, and pre-engineered), coatings (acrylic, silicone, ceramic, etc), sprayed-in-place foam roofs, thermoplastic single ply membranes (PVC, TPO, EP, CSPE, etc…) and thermalset single ply membranes such as EPDM.
Each of these roof systems has its own distinct advantages. A critical factor to a successful roofing project is using a contractor who is both familiar with and capable of installing each type of roof system, and who can provide you with the right recommendation for your project. Your contractor should evaluate your facility and the particular roofing characteristics of the building to then suggest the system(s) that meet your needs.
Any roofing system is only as good as the contractor who installs the roof. The very best components of a roofing system can be specified yet if installed by an average contractor than the results of the project will be average. Roofing projects are dependent upon on the contractor. The roof itself is fabricated on your building and those areas such as roof projections, edge details, penetrations, walls, and other areas of the roof requiring workmanship will determine the success of the project. With this in mind, it is always important to look for a contractor who has a proven track record with multiple years of experience. It is also important to look to a contractor that has the ability to install multiple roof systems so they can work with you to select the best roof system for your specific needs. Criteria such as a written safety program, a drug tested work force, uniformed employees, and the use of their own employees versus sub-contracting are all important. Financial strength, years in business, and like type references are also worth serious consideration.
A final suggestion in selecting a roofing contractor is to ask for references that have had problems. All roofing contractors have had jobs that have leaked. The difference between the good contractors and the bad contractors is how they service the client after any problems arise. Calling a few clients that have required attention after the initial installation is a good way to measure the contractor’s commitment to his clientele.