Archive for the ‘Commercial Roofing’ Category

High Performance TPO Rubber Roofing Systems

December 7, 2010

The TPO Rubber Roofing Systems can incorporate 45-mil, 60-mil, 72-mil or 80-mil (TPO) Thermoplastic Polyolefin membranes.
Because top ply is the most vital membrane component for long-term weathering characteristics.  This results in an ideal commercial roofing system that is reliable, cost effective, environmentally friendly and easy to install.

  • Fully Adhered Systems begin with insulation mechanically attached to the roof deck.  The membrane and substrate are then coated with a bonding adhesive.  The membrane is rolled into place and seams are then hot air welded.
  • Mechanically Attached Systems start with insulation fastened to the substrate.  The membrane is then fastened through the insulation with fasteners and plates.  Adjoining membrane sheets are overlapped and joined together by hot air welding.

One of the greatest benefits of the TPO roof systems is energy savings.  Many manufacturers have ENERGY STAR Compliant TPO Membranes with high reflectivity ratings that help reduce the amount of energy required to maintain cool building environments.  Less energy consumed results in less pollutants generated back into the atmosphere (lessening the Urban Heat Island Effect) and directly contributes to a cleaner, cooler environment.

Contact a Minnesota commercial roofing contractor today!


TPO Single – Ply Roof Systems For Commercial Properties

December 3, 2010

Thermoplastic Polyolefin Roofing Membranes

A typical low-slope roofing system consists of three components: a structural deck, a thermal insulation barrier and a waterproofing membrane, which consists of reinforcing fibers or fabric sandwiched between two sheets of flexible matrix. The matrix material is either asphalt- or polymer-based.  In “single-ply” membranes, the matrix is made of flexible polymer.  The reinforcement provides dimensional stability for the membrane as well as strength to resist stresses in service.  It is generally made of chopped short glass fiber strands packed in a mat, or continuous polyester fiber arranged in a grid or in a non-woven mat.

Benefits of TPOs
The following benefits and characteristics of TPO are:

  • environmentally friendly and recyclable
  • seams can be heat welded
  • available in many colors
  • resistant to heat and UV degradation
  • resistant to may chemicals
  • good cold-temperature flexibility
  • no external plasticizers added

The result is an ideal commercial roof system that is reliable and cost effective. The TPO system is one of the latest single-ply, flat roofing technologies on the market today. The TPO systems can be installed fully adhered or mechanically fastened.

Because of GAF-Elk’s stringent standards, only the top 3% of all roofing contractors have qualified as Master Elite contractors! Choosing a GAF-Elk Master Elite contractor is your assurance that you’ll be dealing with a quality, reputable, and dependable professional contractor — not some “fly-by-nighter.”

Thermoplastic single-ply roofing membranes are among the fastest growing commercial roofing products and have gained broad industry acceptance for their many performance and installation advantages.  As demand increases for heat-reflective and energy efficient roofing systems, thermoplastic polyolefin (TPO) single-ply roofing membranes continue to provide exceptional resistance to ultraviolet, ozone and chemical exposure.

Benefits of Reflective Roof Coatings?

December 1, 2010

What Are The Benefits of Reflective Roof Coatings?

Benefits of Reflective Roof Coatings | “Cool” Roof Systems

There are those who believe that all black or dark colored surfaces, such as asphalt pavements and exposed black roofing materials, are contributors to a “Heat Island Effect.” Much of the heat generated by absorbing the sun’s ultraviolet radiation is also transferred to the building interior.  In warm temperature areas, this increases the demand for power, as the air-conditioning systems labor to maintain a comfortable working climate.

Studies conducted around the world have long ago established the benefits of a reflective roof coating for a “cool” roof system.  The results are well documented that reflective coatings produce energy savings, a more comfortable work environment and, more importantly, a sustainable roofing solution that can prolong the life of a roofing system with proper maintenance and periodic re-coating,  eliminating the necessity for expensive roof tear-off and replacement–and adding to already overtaxed waste disposal sites.

A major benefit of reflective coatings is their ability to sustain or extend the life of the existing roof, while providing a seamless roof surface that requires no fasteners, adhesives or heat welding.  Environmentally friendly and applicator safe to use, the coating, applied at the proper thickness to a sound roof surface, may virtually eliminate the need to replace existing roof material.  The benefits of acrylic roof coatings produce cost savings for roof maintenance and energy expenses and results in significant environmental benefits as well.

Contact a Minnesota roofing contractor for a free roof inspection Or you can email us at:

In selecting your new roof, it is important to understand your climate zone and the actual energy your home or building will save.  There are two “cool roof” calculators available online that can give good estimates of how much energy you will save.  You can find them at:

DOE Cool Roof Calculator
EPA Cool Roof Calculator

Commercial Roofing Contractors Minnesota

November 17, 2010

Roofing Services For Townhomes, Condominiums and Multihousing Properties

Townhomes Associations Commercial Roofing Contractors MN

When occupying a commercial building – whether you bought it and are using it, or whether you bought it and are renting it out to other people – you have to make sure that the roof doesn’t leak. Any leaks can seriously damage the building or the property that’s inside of it, and that can mean a lot of lost revenue for you or your tenants. It could also mean a lawsuit if you don’t take care of your building and things that belong to other people get damaged because of it. When it comes to making sure that your roof doesn’t leak, you have to look at your options.

Most commercial buildings today have either shingle roofs or metal roofs. Some of them also have the tar-paper, liquid asphalt, and crushed gravel flat roofs, depending on what area of the country they are in and when the building was constructed. All of these kinds of roofs have to be repaired differently, and learning about how to repair the roof on your commercial building is important. Even if you choose not to do it yourself, you’ll still want to have some knowledge of how it is done so that you can see that repairs are done correctly and by someone who has the proper knowledge and tools.

Also, make sure you hire a roofing contractor who is licensed and insured and one that has worked on your specific type of roof before. Not all roofing contractors are created equal, and if you hire a person to fix your metal roof when all they’ve ever done is shingle roofs, you could be asking for some serious trouble. Ask plenty of questions and make sure that you know that you’re getting dependable answers before you contract with anyone to repair a commercial roof.

It’s too important to you and your tenants to leave it to the hands of someone who isn’t sure what they are doing. A lot of roof repairs are a do-it-yourself project, but a commercial roof repair is not one of them. If it’s a simple patch around a pipe or vent that should be easy to fix, but more complicated repairs over bigger areas should be left to the professionals. If you try to fix a big area on your own you could end up doing more damage. It’s also possible that the source of the leak isn’t where you think it is. A contractor who’s used to repairing commercial roofs is usually good at finding the source of a leak.

For business owners and those in industrial properties, the roofing needs can be very different from those of residential homeowners. For those consumers, commercial roofers are the ones to call, as they specialize in the specific types of roofs found on business and industrial structures.

A commercial roofing contractor understands the unique needs of multi housing communities. It is often necessary to accommodate different schedules to provide the least amount of disruption to everyone’s lives. Because every project can vary, the special requirements of each client must be considered. While it is reasonably easy to vacate a residential home for a few days if necessary, it is not quite as easy for business and commercial property owners to allow that same level of access to a work crew. A commercial roofing contractor will work with you to schedule your roofing project to allow for the least amount of disruption to your business or commercial property.

The Benefits Of Built-up Roofing Systems

October 19, 2010

Built Up Roofing (BUR)

Built Up Roofing (BUR) Systems From A Minnesota Roofing Contractor

  • Superior Water Resistance
    A multi-layered system of reinforcement offers more protection, reducing the risk for leaks, when a single-ply system only offers one chance at preventing a leak.  Also, nothing compares to asphalt when it comes to making a roof water resistant.  Asphalt is the glue that holds a Built-Up Roof together.  It seals and protects the entire roof, delivering up to five times greater water-resistant thickness.
  • Easier Installation
    When working with hot Built-Up Roofs, the multiple plies get fused together using hot-mopped asphalt to create a monolithic barrier.  Every inch is firmly and completely adhered over the entire roof area, without the need for ballast or fasteners.  Single-ply systems require ballast or fasteners because they are generally laid loose.  But ballast (such as stones) increases structural load and can be blown off by strong winds.  Fasteners can also create less stress points and additional opportunities for moisture leakage.
  • System Longevity
    Each ply of a Built-Up Roofing System contains a mat of glass fiber reinforcement while most single-ply systems contain no reinforcement at all.  When multiple plies are combined and positioned between layers of water-resistant asphalt, the result is a longer lasting roof.
  • Easy and economical to maintain.  And if necessary, can be repaired with conventional, time-proven materials, resulting in extended service life.
  • Product and material improvements have enhanced an already high-quality system.

Time tested and proven to be one of the best commercial solutions today, Built-Up Roofing Systems or “BUR” Systems have been around since the mid-1800s.  They should definitely be a strong consideration for your next roof.

Roof Repair, Roof Restoration or Roof Replacement?

August 17, 2010

Commercial Roofing Options

Commercial roofing is not easy to understand so to assist you in better understanding the low slope roofing options available to you, we have provided a standard list of roofing options for your review.

Repair Your Roof

Don’t procrastinate . . . Repair damage immediately so it doesn’t become a bigger problem later.

  • Always use the right materials recommended by a professional roofing contractor . . . this will insure proper performance and longevity of the repairs.
  • Use a professional roofing contractor, they know what to do – your plumber or lawn care technician doesn’t.
  • Proper and timely maintenance and repairs helps your roof perform to the manufacturers expectations.


  • Repairs can only extend the life of a roof so far.
  • Left in disrepair your roof life will diminish greatly.

Restore Your Roof


  • Budget friendly . . . restoring your roof can save up to half the cost of a new roof.
  • Extends the life of your roof . . . can add up to 15 years to the life of your existing roof
  • Extends the life of your roof . . . can add up to 15 years to the life of your existing roof
  • Minimal Disruption . . . installs significantly faster and with considerable less mess than a conventional new roof


  • Biggest budget impact . . . can be twice as much as a roof restoration.
  • Longest installation time and bigger impact to serviced area.
  • Moderate-to-Severe Disruption and inconvenience for occupants

Replace Your Roof


  • Best Long-Term Option . . . systems can often last up to 20 years or more.
  • Your Peace-of-Mind . . . our manufacturers’ can offer a no-dollar-limit guaranteed available up to 20 years.
  • Fewer installation worries . . . starting from scratch with less work-a-rounds than you’d find in a roof restoration.


  • Biggest budget impact . . . can be twice as much as a roof restoration.
  • Longest installation time and bigger impact to serviced area.
  • Moderate-to-Severe Disruption and inconvenience for occupants

Contact a qualified commercial roofing contractor to help you decide which roofing option will be the best solution for your property.

TPO Single Ply Membranes – An Economical Choice

July 29, 2010

Thermoplastic Polyolefin, or TPO, is part of a diverse family of rubber-like materials based on polypropylene and EP rubber polymerized together using a state-of-the-art manufacturing technology.  Unlike other popular thermoplastic roofing membranes (PVC), TPO does not contain chlorine or plasticizers.  Without chlorine being added, it can be classified as an environmentally safe “green” product.  It is also 100% recyclable.  In addition, the lack of plasticizers enables sheets to wear longer and not harden or become brittle over time.  Flame retardants, light stabilizers, antioxidants, light absorbers and pigments are blended to create a sheet that is “Title 24” compliant.  The white TPO roofing membrane typically has a reflectivity rating in the high 80% range when installed, and after 3 years still maintains a rating in the low 80% range.

In commercial roofing applications, the TPO membrane is installed using mechanical fasteners and plates placed along the leading edge with the next sheet lapped and then hot air-welded together. Hot air robots make larger jobs very quick with welds that are consistent.  One of the major benefits of TPO is that the welded seams actually become stronger than the sheets themselves, making for an ultra-strong roof.  TPO is suitable either as an overlay or for use in a complete tear-off.  Sheet thicknesses range from 45 mils to 80 mils, with the 60-mil sheet the most popular.  Because TPO roofing material is manufactured in wide sheets, labor requirements are reduced, especially on larger roof installations, which can result in significant cost savings, making TPO an economical choice.

Completely odorless, TPO is good choice for situations where fumes would be a problem and roofs that have limited access.  Manufacturer material and labor warranties for TPO roofing range from 10 to 20 years.

Types Of Flat Roof Systems

July 27, 2010

Flat Roofing

Although they are not as alluring as slate, tile or wood roofing, a flat roof is still extremely significant and may even require more attention.  Flat roof systems work by providing a waterproof covering over a building.  Water is then directed to drains, downspouts, and gutters by the slight pitch of the roof.

The Four Different Types of Flat Roofs

There are four main different types of flat roofing. They are:

  • Built-Up Roofing (BUR)
  • Single Ply Membrane
  • Sprayed Polyurethane Foam (SPF)
  • Roll Asphalt

Built-Up roofing (BUR) is composed of overlapping rolls of saturated or coated felts, literally built up to form layers. These roofs are designed to last 10 to 30 years, depending on the materials used.

Single Ply Membrane roofs come in two main types, thermoset membranes and thermoplastic membranes. Warranties of 10 to 12 years are typical, but as with any roofing system, proper installation is crucial and maintenance by the owner is still required.

Sprayed Polyurethane Foam (SPF) is a seamless roof system consisting of a layer of foam, sealed and protected by a resilient coating. It has been used successfully as a roofing and insulation material for over 30 years.

Roll Asphalt roofing has been used for the longest. This type of roofing typically consist of one layer of asphalt-saturated organic or fiberglass felt, applied with nails and cement, and then covered with a mineral surface. Generally, roll asphalt will last about 10 years.

Looking For More Information About Flat Roofing?

Roofing or re-roofing your home is a great investment. You’ll want to make sure you get a quote from a reliable roofing contractor.

EPDM Single – Ply Roofing Systems Part 2

July 13, 2010

How Long Do They Last?
As with most roofs, EPDM rubber roofs have varying lifespans that depend on numerous criteria.  These include environmental conditions such as what type of building (factory or church), how much foot traffic the roof gets, how much water remains on the roof after a rain, and how long it take that water to evaporate.  Not to mention geographical location.  Roofs in mild climates will outlast roofs in harsher climates.  Of course, one of the most important factors in a roof’s life expectancy is quality of workmanship.  If the roof is not properly installed, then its lifespan will be shortened.

Properly installed EPDM rubber roofs should last between 12 and 25 years.  Here’s a brief breakdown base on observations over the past 15 years::

  • 45 Mil Ballasted EPDM Rubber properly installed that drains well – 12 years
  • 45 Mil Mechanically Attached roof properly installed that drains well – 12 years
  • 45 Mil Adhered roof properly installed that drains well – 12+ years
  • 60 Mil Ballasted EPDM Rubber properly installed that drains well – 12+ years
  • 60 Mil Mechanically Attached roof properly installed that drains well – 15 years
  • 60 Mil Adhered roof properly installed that drains well – 15+ years
  • 80+ Mil Mechanically Attached roof properly installed that drains well – 20+ years
  • 80+ Mil Adhered roof properly installed that drains well – 20+ years
  • 80+ Mil Fleeceback Adhered roof properly installed that drains well – 25+ years

Available in a Variety of Membrane Thicknesses and Roll Sizes

Single Ply Roofing Systems

JM EPDM Roofing Membranes

Standard Roll Sizes (* Full-width, no-fold membrane)

Product Widths Lengths
45 FR 10′ (3.05 m) 50′, 100′ (15.24 m, 30.48 m)
20′ (6.1 m) 50′, 100′ (15.24 m, 30.48 m)
30′ (9.14 m) 100′ (30.48 m)
40′ (12.19 m) 100′ (30.48 m)
60 FR 10′ (3.05 m) 50′, 100′ (15.24 m, 30.48 m)
15′ (4.57 m)* 100′ (30.48 m)*
20′ (6.1 m) 50′, 100′ (15.24 m, 30.48 m)
30′ (9.14 m) 100′ (30.48 m)
90FR 10′ (3.05 m) 100′ (30.48 m)
45 R 10′ (3.05 m)
60 R 10′ (3.05 m) 100′ (30.48

EPDM Single – Ply Roofing Systems Part 1

July 8, 2010

EPDM Single – Ply Roofing System

EPDM: Ethylene Propylene Diene Monomer (or Terpolymer which is simply a product consisting of three distinct monomers).  EPDM is classified as a Thermoset material which means it is either fully-cured prior to being installed or that it cures during natural weathering after installation.  EPDM roofs are single-ply membranes meaning there is only one ply of roofing material, not multiple plies laminated together.

EPDM has been in use on roofs in the USA since the 1960’s and is one of the most common types of low-slope roofing materials.  This is because it is relatively inexpensive, simple to install, and fairly clean to work with when compared to conventional built-up roofs.  There aren’t the odors and fumes that accompany built-up roofs which appeals to many property owners and managers.

EPDM is a rubber material whose principal components consist of the compounds ethylene and propylene.  A flexible rubber matrix forms when a small amount of diene is added to the mix.  EPDM is available reinforced or unreinforced with both commonly used; it’s also available in either a cured (vulcanized) or uncured (non-vulcanized) state. Vulcanized EPDM is the most common with non-vulcanized often used for flashing purposes.

EPDM membrane thickness ranges from thirty mils (0.030″) to one-hundred mils (0.100″) with the most common thicknesses being forty-five mils (0.045″) and sixty mils (0.060″).  There are three standard application procedures:
(1) fully-adhered
(2) mechanically-fastened
(3) loose-laid

Fully-adhered EPDM uses water or solvent-based adhesives to adhere the rubber to the substrate.  Mechanically-fastened EPDM is attached by manufacturer-approved mechanical means to the substrate, and loose-laid membranes are secured only at the perimeters and any penetrations.  A ballast of round river rock or concrete pavers is used to hold the materials in place.  River rock is usually installed at a rate of 1000 – 1200 pounds per roof square (100 square feet) and the pavers generally weigh approximately 20 pounds per square foot.  Structural integrity is important with loose-laid roof systems.  The seams of all systems are then sealed using either an adhesive or a splice tape.  Splice tapes have tested with a higher tear-strength.