Commercial Roof Flashing: Types and Purpose You Should Know

Posted on January 7th, 2022 by Applied Roofing Services

Is your roof leaking? It could be because of the roofing system’s flashing failure. A damaged or insufficient flashing will make it difficult for your roof to repel the outside elements, thus causing leaks. Therefore, whether installing a roof or repairing the existing one, ensure the flashing is properly installed and compatible with your roof.

What Is Flashing on a Roof?

Flashing is a thin, metal material that directs water away from the roof’s critical areas including, chimneys, walls, vents, skylights, and roof valleys. It is usually installed everywhere the roof plane meets a vertical surface like a dormer or wall.

Commercial Roof Flashing Types

  • Continuous Flashing/Apron Flashing – A long, single metal piece that directs water down to the roof shingles.
  • Step Flashing – A rectangular flashing with a 90-degree bend in the middle is used to direct water away from the wall.
  • Base Flashing – Used as one of the flashings on chimneys, which require two flashings to ensure the rainwater always flows down to the gutter.
  • Counter Flashing – Installed against or above the base flashing to direct water away from the chimney.
  • Drip Edges – A thin metal flashing is installed on the roof’s edge to drip off the water, preventing leaks and damage to the home.

Also read: 5 Tips to Extend Your Commercial Roof’s Lifespan

Commercial Roof Flashing Materials

  • Copper Roof Flashing – This is malleable, highly durable, and usually found around chimneys.
  • Aluminum Flashing – It is an easy-to-form and lightweight flashing. However, aluminum needs to be coated when using it with concrete and masonry because plain aluminum can degrade when coming in contact with alkaline surfaces.
  • Steel Flashing – While increasing the aesthetic value of your roof, steel flashing is corrosion-resistant (when galvanized) and also malleable.

Roof Flashing Techniques

Plumbing Vent Boot Flashing

A cylindrical-shaped flashing is installed around the plumbing vent pipe to direct water to run around the vent.

Step Flashing

It is installed at the roof-wall intersection to keep water away from the wall.

Counter Flashing

It is used to seal chimneys and involves two flashing pieces:

  • Base flashing (first piece) – Installed around the chimney’s base.
  • Counter flashing (second piece) – Installed above the base flashing while embedded into the chimney’s masonry to ensure water does not flow behind the base flashing.

The Purpose of Roof Flashing

Roof flashing is required to protect buildings from water damage and leaks. Otherwise, water would gradually get into the roof-wall intersection and eventually into your building, causing significant damage.
Also read: 6 Reasons Why You Need Commercial Roof Cleaning

How Long Should Roof Flashing Last?

When installed properly, roof flashing can last up to 30 years. If you are looking for the best commercial roofing contractor in California, look no further than Applied Roofing Services. To get comprehensive commercial roofing solutions, contact us today at 714-632-8418 or request a quote online.

About Applied Roofing Services

Applied Roofing Services is a full service roofing company located in CA. We offer durable and high quality residential and commercial flat roofing. We provide roof installation as well as roof repair services, roof maintenance and inspection services. We specialize in low slope roofs, energy efficient, zero maintenance, and green roofing. We have 20+ years of experience in the roofing industry.


What Is Single Ply Roofing: Know the Basics

Posted on December 26th, 2016 by Applied Roofing Services

With the availability of a wide range of products in commercial and residential roofing industries, the type of roofing material one has to go with usually depends upon the specification of that particular project. Apart from all the other materials, single ply roofing has been increasingly high in demand for the past 30 years due to its competitive price, strength, ease of installation, durability and the flexibility of the material.

Single ply roofing is generally used for commercial purposes. These are compounded synthetic material manufactured under strict supervision in factories to maintain the quality.

Orange County Single-Ply Roofing

Which Products Are Considered Single Ply?
Single ply roofing has different options available in the market. But there are mainly three types of membranes categorized as single ply membranes.

Thermosets
These are blended from rubber polymers. EPDM is most commonly used thermoset polymer (referred as “rubber roofing”). Hypalon is another unique material because it’s produced as a thermoplastic, but as it cures over time and it turns into a thermoset. The proven ability to protect property from the dangerous effects of sunlight and other widespread chemicals on the roof, thermosets are really successful as roofing materials.

Thermoplastics
Thermoplastic membranes are made from plastic polymers. PVC (polyvinyl chloride) and TPO (thermoplastic polyolefin) are most common thermoplastic membranes. These materials are really flexible because they are made with certain ingredients known as plasticizers. A number of different products in this category are available, each having its own unique formula.

Modified Bitumens
These are hybrid membranes that incorporate the advanced technological formulations and prefabrication advantages of single ply. These also use some traditional installation techniques that were used in built-up-roofing. These materials are layers of asphalt, “modified” using a plastic or rubber ingredient for flexibility, and combined with a reinforcement for added stability and strength.

Which Type of Single Ply Membrane Should You Use?
Building height, wind exposure, anticipated roof traffic, aesthetics, and cost are some important factors which you should keep in mind before going for any single ply membrane. Check track records and reputation of certified roofing contractors before investing your money.

Single Ply Roofing Installation Methods
Single ply membranes can be installed fully adhered, held down with ballast or mechanically attached. This roofing does not require surfacing. Sometimes, combination of attachment methods are used to secure a roof system. In full adhered systems, you are fully dependent on the substrate you are attaching the membrane to hold the roof. Ballasted system is applied over a loosely laid roof and has low installation cost as compared to other installation methods. While considering the fastening method, you have to be careful when dealing with very lightweight decks.

Why Single Ply Roofing?
Though we have lots of other materials available for roofing, single ply is best of them. It’s because of its light colored, reflective roof surface that offers the occupants significant reduction in energy and even have the potential to downsize HVAC (Heating, ventilation, and air conditioning). They also offer lightweight solutions to accommodate the unconventional roof designs of modern architecture.

About Applied Roofing Services

Applied Roofing Services is a full service roofing company located in CA. We offer durable and high quality residential and commercial flat roofing. We provide roof installation as well as roof repair services, roof maintenance and inspection services. We specialize in low slope roofs, energy efficient, zero maintenance, and green roofing. We have 20+ years of experience in the roofing industry.


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Locations

APPLIED ROOFING SERVICES

Orange County Office:

1961 N. Main St.
Orange, CA. 92865
Phone: 714-632-8418 or
(800) 895-9589

Get Directions

Los Angeles Office:

1055 West 7th Street
33rd Floor Penthouse
Los Angeles, CA 90017
Phone: 213-255-3677

Get Directions

 

San Bernardino Office:

8333 Foothill Blvd
PMB # 411
Rancho Cucamonga CA 91730
Phone: 909-361-6119

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