Category Archives: Green Roofing

From Roofs To Roads Asphalt Shingle Recycling

Asphalt Shingle Recycling, The Responsible Choice

Relieving Our Landfills Of Unnecessary Waste

Green Roofers Washington StateA challenge we face today as a generation of environmental watch dogs is monitoring what is going into our landfills. Regulations are tightening up and programs are being created to reduce the amount of toxic materials or recyclable waste that is dumped each year. This trend has impacted the construction industry in a huge way as it produces up to 1/3 of the waste in our landfills in the U.S. With an eye on the environment you should expect to see more and more recycling programs utilized and enforced in order to preserve our eco-system.

Environmental Impact Report

Green Roofing

At Chase Construction North West, Inc we have made a commitment to recycle our asphalt roofing shingles. Here are a couple of startling facts about how much asphalt roofing is in our U.S. landfills and the impact it has on our environment.

-11 million tons of asphalt roofing are dumped at U.S. landfills each year. 
-At $100 a ton in dump fees that equates to $2.2 trillion dollars in annual dumping costs.
-Asphalt shingles are estimated to take up to 300 years to decompose.
-Asphalt shingles are made of petroleum products which increases the risk of negative environmental impact.

The Metal Roofing Alliance states “If a years worth of tossed out shingles were loaded onto tractor-trailers, and then set bumper to bumper, they would stretch from New York to Los Angeles, back to New York, and then on to Chicago.”

 The Green Answer, From Roofs To Roads

Roofs To RoadsThere is a very simple solution to this mammoth problem. New technology now allows us to grind asphalt shingles and turn them into a substance  known as RAS (recycled asphalt shingles). In many places specifications are now allowing up to 5% of the asphalt for our roads to be RAS. Common products that are created from recycled roofing shingles are roofing cement, crack filler, cold patch, roof boards, pavement enhancer and more.

 

Our Commitment

GAF Green Roofer Washington StateChase Construction North West, Inc is a GAF Certified Green Roofer and is  committed to recycling our asphalt roofing shingles. As partners with GAF’s green roofing and shingle recycling initiatives we are part of the solution, not the problem. You can depend on us to offer green roofing solutions for Pacific Northwest families and to be environmentally friendly. 

Contact Us For A Free Estimate

Are you ready to re-roof your home? Chase NW has been providing exceptional re-roofs in the Puget Sound for over 12 years. Call 253-445-8950 today for a free no obligation roofing estimate. We specialize in asphalt composition, metal, wood shake, torchdown, single ply, slate, concrete tile, roof repair, gutters, solar tubes and skylights. 

We provide service to Sumner, Puyallup, Tacoma, Federal Way, Olympia, Kent, Renton, Des Moines, Seattle and the surrounding Puget Sound cities. 

Flat Roof Ponding

Is It Acceptable to Have Ponding On My Flat Roof?

By Allen Sensel

Moderate Water Ponding

Introduction

There is a lot of speculation with older building designs and how their flat roofs have a tendency to collect pools of standing water referred to as ponding. The purpose of this report is to provide clarity for a commonly misunderstood notion that a flat roof, whether it’s asphaltic built-up, modified bitumen, or any kind of single-ply membrane, should not bear any kind of collection of rain water. I will provide brief examples from the IBC, U.S. Department of Housing and Urban Development, and Factory Mutual, all of whom mandate construction and renovation standards to comply with regional climates,weather patterns, and safety.

Definition

Ponding water, as described by the IBC and recognized by the U.S. Department of Housing and Urban Development, is water that remains on a roof surface longer than 48 hours after the termination of the most recent rain event.

Standing Water

This explanation from the IBC can also point out that directly following persistent rainfall, water is not considered standing until after 48 hours of dry weather, after which, can evaporate efficiently at temperatures above 45 degrees Fahrenheit. Only when the same volume of water exists after this period can there be a concern for potential leaks, providing that the roof system was properly installed.  The U.S. Department of Housing and Urban Development elaborates on how building inspectors approach ponding after an installation:

“48 hours before conducting a physical inspection, check the local weather forecast to see if precipitation is expected. If there has been precipitation within 48 hours prior to your inspection, use your judgement in deciding if observable ponding is due to the recent precipitation or because of an ongoing problem. Keep in mind that some flat roofs are designed to allow ponding.”

Concurrent with the size of the roof, Factory Mutual Global explains rain load on a dead flat roof:

“2.1.1.1.7 Roofs should be designed with positive drainage: however, dead-flat roofs consistent with this guideline are acceptable.”

An older building will lack modern specifications for framing slopes a minimum of  1/4” rise per 12” run. The solution to controlling water flow on a dead flat roof, if ponding is still a noticeable concern after following the aforementioned provisions, is designing a framed slope for positive drainage to scuppers and/or bowl drains.

Resources

“Definitions Supplement.” U.S Department of Housing and Urban Development Real Estate Assessment, October, 2001: 3

“Roof Loads for New Construction.” FM Global Property Loss Prevention Data Sheets, September 2006: 3-5

International Code Council. 2009 International Building Code. 2009

 

 

Guest Blog: How Energy Efficient Roofing Systems Help Lower Utility Bills

How Energy Efficient Roofing Systems Help Lower Utility Bills

Energy Efficient Roofs Everyone knows that it can get hot in the Summer. For many people, this leads to high utility bills because the air conditioner needs to be on almost constantly in order to battle the heat. However, there are some things that can help reduce this need for energy. The right choice in roofing makes a huge difference in the energy utilization of a home and there are several choices that can help a home be more efficient.

Cool Roofs

This is a fairly broad term that encompasses several different types of roofs. Cool roofs are those that are designed to reflect sunlight back rather than absorb it. This decreases the amount of heat energy that is absorbed into the system and keeps the space cooler naturally. It can also reduce energy bills for air conditioning and other home cooling systems.

The main disadvantage that cool roofs have is that they prevent heat gain year-round, including during the winter when gaining heat is appreciated. This can increase heating costs sharply in areas where it gets fairly cold. Some studies have shown that even in cold climates the savings during hot months financially outweigh the losses during cooler months.

Any roofing contractor that you hire should be aware of the existence of cool roofs. However, because there are many different types of cool roofs available, the contractor may or may not be well-versed in the technology any given individual is interested in. Contractors can usually give referrals for services that they themselves do not provide, though.

Low-Sloped Roofs

Many buildings all over the world have flat or nearly-flat rooftops. This type of roof allows the greatest use of indoor space and in some locations is used to add an additional area of use. Flat roofs may have trouble draining which has led to the invention and use of low-slope roofs which are nearly but not completely flat.

Some types of energy efficient roofing such as green roofs only work with low-slope or flat rooftops. Commercial low-slope roofs are often made of metal as this substance is more durable than tar or other traditional materials. PVC, which is a type of plastic, is another common flat or low-slope roofing material. Roofs made of thermoplastic PVC are considered cool roofs in that they reflect much more light than a tar roof can.

Steep Sloped Roofs

Although many roofs are too steeply sloped to be called low-slope roofs, truly steep roofs are fairly uncommon. Among other reasons, this is because roof repair on these steep slopes is difficult and most builders won’t create them. Even if a roofing contractor is willing to build a steep roof there are other reasons to avoid doing so.

For people who are set on having a steeply sloped roof, however, it can be made just as cool as its flatter cousins. Metal in cool colors is an attractive option for a steeply sloped roof and there are Energy Star qualified options available. For people who like the traditional look, there are also asphalt shingles that are Energy Star certified for creating cool roofs.

Green Roofs

Some people have accidental green roofs but there has been a recent push towards purposeful ones. A green roof is one where plants are being purposefully grown or allowed to grow on it. These plants and the layer of soil between them and the roof help insulate the building and can reduce energy costs significantly.

Although there are traditional pitched green roofs in some parts of the world, American green roofs are almost entirely low-sloped or flat. Some are created with the addition of soil and seeds while others are allowed to collect these things naturally. All green roofs are built with a strong layer of waterproofing to protect the building from the frequently-damp soil.

Green roofs come in several varieties. One distinction is made based on the amount of vegetation grown. Intensive roofs require stronger support systems and more maintenance but can support more growth and are sometimes gardened on. Extensive roofs typically have only a thin layer of soil and small plants or mosses. They are accessed only for roof repair.

Guest Blog Published By:

Arizona Native Roofing
24008 N. 104th Avenue
Peoria, Arizona 85383
Office: 602-348-6559

Cover-Boards: Purpose & Application

by Allen Sensel

Glass-Matt Roof Protection

When putting a low-slope roof together it’s important, as a building owner or engineer, to understand how to control moisture, combat mold, and provide fire protection. Cover-boards offer sufficient roof deck protection that meet these requirement for installing a roof. They can also serve as a purpose for re-covering your roof. These boards provide a clean, smooth surface to attach your next roof system to.

Glass-Mat Roof BoardUSG manufactures Securock, a glass-mat board that can be used on a flat roof for dimensional stability, surface protection, and overall increased lifespan of a structure. When installed correctly, Securock acts as vapor and fire barrier, keeping the roof membrane from developing mold and succeeding in fire standard ratings (rated at the maximum ’10’ with Factory Mutual [FM] Class 1 and a Class A Fire rating with Underwriters Laboratories [UL]). This is a great way to qualify for lower insurance rates as your building is less prone to fire damage.

One of the other benefits to using Securock is its ease of installation. The packaging is efficient and the board utilizes a high-quality, mat-to-core tensile bond, making each piece easy to cut and hand-break. This creates a faster labor work-flow and less of a mess to clean off of the roof surface, which helps to cut cost and keep workers focused on installing a quality roof as a whole.

As a local certified Seattle roofing contractor, we’re all about installing a quality commercial flat roof and so we recommend using USG Securock for our installations. We also specialize in single-ply residential roof systems. Give us a call at 253-445-8950 for a free estimate or drop by our website, http://www.chasenw.com.