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In our fifth decade in the roofing industry, we take great pride in the people and professionalism that drive CentiMark to new levels of success and excellence in roofing and flooring.

Safe Roof Series (Part 4): Roof Hatches

Safety and Roof Access Hatches


What are Roof Access Hatches?

Many roofs, especially low sloped roofs, are accessed via a fixed ladder or stairway leading to a roof hatch or scuttle. Most hatches are equipped with a hinged lid that has pistons or springs to assist in opening the lid along with a locking mechanism to keep it open. These fixed ladders and hatchways make climbing onto a roof more convenient than using an extension ladder.

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Safe Roof Series (Part 3): Roof edge railing types, applications and installation

Roof Edge Railing System2Roof edge railing types, applications and installation

In our previous article: Safe Roof Series (Part 2): Skylight Fall Protection, we discussed Skylight Fall Protection. This week we move from the center roof to the roof edge.

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CentiMark & Ed Dunlap – An American Success Story: 2000s

CentiMark & Ed Dunlap – An American Success Story: 2000s

Growth, diversification, new leadership, safety, service and technology were the milestones of this decade.

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CentiMark & Ed Dunlap – An American Success Story: 1968 - 1970s

CentiMark & Ed Dunlap – An American Success Story: 1968 - 1970s

Edward B. Dunlap started D&B Laboratories in 1967 as a part-time industrial cleaning products business in the basement of his home in Pittsburgh, PA. Dunlap started Northern Chemical Company (later Northern Industrial Maintenance) with $1,000 and one associate in 1968. The upstart building maintenance products and services business produced first year sales of $98,500.

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Winter Weather - At What Cost To Your Roof?

Winter Weather - At What Cost To Your Roof?

The harsh winter of 2015 is almost over. But what did it do to your roof?

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Sustainable Roofing and Flooring Options

Sustainable Roofing and Flooring Options

Sustainability is a commitment to future generations to minimize negative impacts on the environment. CentiMark and QuestMark are very committed to environmentally friendly products and services and recycling practices.

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CentiMark & QuestMark Safety Report - 2014

CentiMark & QuestMark Safety Report - 2014

At CentiMark and QuestMark, we take great pride in the safety of our workers. Our goal is for every CentiMark and QuestMark associate to return home safely to their families every evening. In 2014, 24 of our offices did not have a work injury during the year.

Our safety Incidence Rate in 2014 for roofing was 2.56, lower than the national Incidence Rate of 4.8. For QuestMark, the safety Incidence Rate for flooring was 2.56, lower than the national Incidence Rate of 2.90.

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Roofing Decisions Are Complex

Roofing Decisions Are Complex

by Michael Rew, Vice President of Technical Services, CentiMark

At CentiMark, we re-roof commercial and industrial flat roofs throughout North America. We install roof systems including: Thermoplastics (TPO, PVC), EPDM (rubber), modified bitumen, coatings, metal, spray polyurethane foam and BUR (built-up roofing).

Roofing decisions include considerations of building use, climate and budget.

Roofs must withstand more attacks from nature than any other building component. These factors include: large temperature range of performance, thermal shock (large temperature swings), solar radiation (UV and heat), rain, snow, airborne pollutants, fungal attacks and wind forces.

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Roofing Industry Updates in 2015

Roofing Industry Updates in 2015

CentiMark and QuestMark take the responsibility of providing our customers with high quality products and services very seriously. We want to save our customers both time and money. It is our goal to anticipate your needs and exceed your expectations.

CentiMark’s industry leaders use advanced knowledge, experience and cutting-edge technology to keep our customers best interests in mind. Read more about advancements and changes with roofing codes, tough decisions our customers face, technology in the roofing industry.

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Baby Boomers Influence on Residential Roofing

Baby Boomers Influence on Residential Roofing

CentiMark is the largest commercial and industrial roofing contractor in North America. We specialize in flat roofs. Typically, we install white TPO roofs or black EPDM roofs or white spray polyurethane foam roofs.

Although CentiMark is not a residential roofing contractor, we thought this press release on Baby Boomers influence on residential roofing was really funny. As baby boomers age, they are even influencing the color of residential roofs!

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Budgeting for Roofing - Spend Your Capital Dollars Wisely

Budgeting for Roofing - Spend Your Capital Dollars Wisely

Here's how to make the most of your capital and operating dollars.

1. Review local and national building codes. What are the R-values (measure of thermal insulation) and wind-uplift requirements that need to be considered?

2. Your roofing contractor can provide the criteria for roof system assemblies that your insurance carrier will need to determine if the roof replacement system that you are considering meets their insurance requirements.

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EPDM (Rubber) Roof System

EPDM (Rubber) Roof System

Not all roofing systems can brag that they’ve been around for more than four decades!

Technically known as “ethylene propylene diene terpolymer,” EPDM is an exceptionally strong and resilient roofing system that can last 30 years or longer when installed and maintained correctly.


If you’re in the market for a new facility roof or you just want to know what your options are – you might be interested in knowing that EPDM is among the best roofing choices for affordability, energy savings and for reducing your building’s carbon footprint.

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