Is all roofing material delivered to the construction site?

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If not, specify that this must be done. In addition, make sure that the roofing structure you purchase or specify, including the insulation, is UL classified and labeled. Use of insulation other than that tested with the Roofers Dublin membrane may invalidate the UL classification.


Make sure the product Roofers in Dublin you are getting is the actual product that has been tested. You don’t want something comparable, but not equal. Locate the job site label and make sure that all components of the system have been tested together. You want the membrane to be tested with the insulation you use on your building.

Does the system require a wind load?

Wind rise damage can be extensive and expensive. The American Society of Civil Engineers Standard 7-95, “Minimum Design Loads for Buildings and Other Structures”, is accepted as an industry standard and can be used to determine the wind zone of the building. Wind testing tests, such as those performed at Factory Mutual Roofing Service or Underwriters Laboratories, can be used to determine whether the selected roof system meets or exceeds local wind rise requirements.

How much does the completed system add to the weight of the roofing construction?

When choosing Roof Contractors a re-covering option, the facility manager should be aware of the load-bearing capacity of the roof deck to ensure that the correct flexible membrane option is selected. In new construction, savings can often be made on structural steel by installing one of the lighter flexible membrane systems.

A ballasted thermoplastic or EPDM roof can require more than 1,000 pounds per 100 square feet, while a mechanically attached or fully bonded thermoplastic or thermoplastic membrane weighs 33 pounds per 100 square feet. A lighter system often allows you to extinguish directly over your existing roof, while heavier systems require you to tear off the old roof and start over. But weight is just one consideration when choosing a roofing membrane and mounting system. A ballasted roof may be the best choice for a particular facility. Facility executives must ensure that all relevant considerations, including weight, are taken into account in the decision-making process.

What are the expertise and financial strengths of the roofer you are considering?

Roof Repair Dublin should be chosen with great care. The introduction of new roofing materials and application techniques over the past 10 years has led to many changes. A professional roofer should be familiar with different types of roofing systems to help you make the best decision for your facility, based on your budget.

Insist that the contractor provide you with copies of insurance certificates verifying workers’ compensation and general liability coverage. Check that those coverages are in effect for the duration of your roofing membrane. If the contractor is not properly insured, your company, as the owner of the property, may be liable for accidents that occur on the property. Also, check your state’s licensing requirements and see if the contractor is bound by a surety company.


The installation Roofing Service of different roofing systems varies considerably. Education and training are the most important elements in the installation of roofing systems. Make sure the roofer you choose has detailed and ongoing training on the system being installed.

A rule of thumb is to find out if the contractor has installed at least 100,000 square feet of the desired system in the past 18 months. Also, make sure the contractor is approved by the manufacturer to install that particular system.


The quality of the workmanship is crucial for good roof performance. The National Roofing Contractors Association offers a professional roofing selection guide. Additionally, many manufacturers have approved contractor programs with specific qualifications that roofers must complete before getting good

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