Archive for Green Construction Ideas

Mission Valley Estates

FGBC Score = 242

FGBC Score = 242

Josh Wynne Construction, Inc. is proud to announce that its recently completed Mission Valley Estates Home has been awarded a score of 242 by the FGBC (Florida Green Building Coalition). With the certification of this home, Josh Wynne Construction has constructed 3 of the top 9 FGBC certified homes in the state, including the current best score of 267. Josh Wynne Construction is the only builder in the state with more than one home in the top 10.

This home is especially interesting because of its value. Great care was taken to reduce the electrical load on this home. In spite of having no gas available, and installing a swimming pool, this home achieved a HERS index of 52! This was enough to qualify this home for the DOE Builder’s Challenge. It is quite remarkable considering the total build costs were under $100/sqft!

The site has a rustic, native feel reminiscent of old Florida. The neighborhood features acreage lots, many of which are used as horse paddocks. These details, along with the client’s taste, steered the architecture toward a new Ranch style. Carriage style garage doors, lap siding, open rafters, and a covered front porch complete the feeling that this home inspires.

Long eaves, large insulated, impact patio doors, and intelligently located windows of the same construction make the most of Florida’s offerings while maintaining indoor comfort. The beautiful and durable polished concrete floors help to regulate the temperatures as well. Of course none of these design features can completely replace a well designed HVAC system when the Florida summer arrives. An advanced dampering system is the heart of the Bryant Evolution installed in this home. Two zones and two fan speeds help this 22 SEER Puron system maintain a comfortable home while sipping energy.

The HVAC requirements of this home are exactly half that of a code built home of the same size! Quality windows, doors, and insulation systems along with quality construction techniques make this home air-tight!

Durability was not sacrificed for cost! The roof consists of a secondary moisture barrier and solid soffit designs to control wind driven rains in the worst of Florida’s hurricane seasons. All roof decking was glued and nailed to ensure a solid adhesion. The foundation features installed tubes for combating any future termite/pest issues with minimal expenses. All wood members from the floor to the roof peak are treated with Bora Care, a natural, safe termiticide with mold inhibiting properties. For easy maintenance, a TAEXX tubular pest control system was installed throughout the home.

Indoor air quality was addressed in all areas. The duct system was sealed at installation. A MERV 10 filter cleans the air as the HVAC system runs. Sherwin-Williams Pro Green low-VOC paints make breathing easy and alleviate concerns of toxic off-gassing associated with other paints. Even the cabinet finishes are low-VOC!

Materials management is a major factor in smart construction. 75% of the waste from this project was diverted from the landfill for recycling! Construction techniques to reduce material usage were employed including smart design, stack wall construction, and good estimating practices. Many of the products in this home contain recycled materials. Concrete countertops with 98% recycled material content, fly ash, recycled content drywall, and engineered wood products are just a few examples.

Water usage is a major issue in Florida. 520 gallons of rainwater storage capacity severely cuts the need for supplemental water in the already drought tolerant landscape. The overflow even feeds the raised bed vegetable garden! Toilet technologies allowed for the use of 1.28 gal/flush toilets while maintaining a MAP rating of 10 (out of 10) in flush power. Aerators made it simple to use our favorite fixture designs while being responsible with water flow rates.

In addition to FGBC, the home is certified by Energy Star, FPL Build Smart, and Florida Yards & Neighborhoods. It was constructed in just four months. The price included site work, fees, pool and cage.

The FGBC is a nonprofit 501(C)3 Florida corporation dedicated to improving the build environment. “Our mission is to lead and promote sustainability with environmental, economic, and social benefits through regional education and certification programs.” For more information on FGBC visit www.floridagreenbuilding.org.

What the hell is ‘green’ anyway?

What is "Green"You can’t escape it!  Everywhere you go retailers are trying to sell you ‘green’ options.  Some promise a better product, others a clear conscious but most promise nothing.  It may be a safe assumption that they deliver nothing as well.  ’Green’ has become the catch word for selling anything these days.  Cars, food, bags, flat screen TV’s, furniture, paint, carpet, knives, cookware, xmas lights, bulbs, landscape, etc…..are all available as ‘green’.

So what is ‘green’?  How can it describe so many things?  Will it make you live longer?  Will it make you healthier?  Can it make you happier?  Green is a secondary color on the color wheel located between primary blue and primary yellow.  That’s it!  ’Green’ is not a standard, criteria, benchmark or certification.  It really is just a color that many people have associated with any effort or perceived effort to reduce pollution and/or live healthier.  At first it was innocent enough. It is certainly easier to describe your new home as ‘green’ than it is to define the qualities of your home that may or may not make it somehow superior to most others.  Today ‘green’ as a label is being abused.

Most of you have likely already heard the term ‘green washing’.  This term is used to describe a product or service that has somehow abused someone’s interpretation of the label ‘green’.  Absurd isn’t it?   An absurd and generic word like ‘green’ has now earned it’s own absurd retort.  I am still uncertain how there can be ‘green washing’ at all since the word ‘green’ describes no specific standard for which to live up to.

Personally I try to avoid the word ‘green’ when referring to my homes. Instead, I refer to the specific standards that my homes meet/exceed. In my business these standards include: USGBC LEED, FGBC, Energy Star, FPL BuildSmart, Florida Yards and Neighborhoods, NAHB Green, WaterStar Gold, and National Wildlife Federation.  While meeting any of these standards on a home may make you believe that the home is in fact  ’green’, there is a world of difference between these standards.  For instance, a home that meets all of these standards could be considered ‘green’.  Also, a different home that meets only the FPL BuildSmart standard could be referred to as ‘green’.  Does that mean that they are the same?  Absolutely not!  The point is that it is important to determine the standards by which a product or service might be measured rather than simply settling with the ‘green’ label.

There are a lot of local businesses who go way out of their way to make you believe that they are dedicated to your salvation and that of the earth.  Some go so far as to use the word ‘green’ in their company name!  Do not assume that they are in fact ‘green’.  Ask them if the follow a set of standards with regional credentials.  Ask them if ALL of the their projects or products meet those standards.  There are many builders locally who claim to build ‘green buildings’ even in their names and marketing and yet most of their projects do not meet any standards!  In my opinion, this is the bait and switch using our favorite word….. ‘green’.

Ask your purveyor or service provider what their intentions are regarding their choice to be ‘green’.  Is it to save the Earth?  Reduce electric and water bills?  Create a healthier person?  A healthier environment?  Or is it just marketing pressure in a down economy.  I have been labeled by others as a ‘green’ builder because I only build homes that meet the standards associated with our favorite word.  I have no designs on saving the Earth one home at a time.  I build the way I build because I believe in building my customers’ the best homes that their money can buy.  I believe that they deserve to live in the healthiest homes that technology allows.  I believe that if I can find value in water and energy conservation for my customers, then they deserve my effort to create that value.  I believe that my customers deserve low waste service fees, low home owner’s insurance costs, low maintenance costs, and low landscape maintenance fees.  For those reasons, I build durable homes that have native landscapes and I manage my waste during construction.  I won’t recommend anything ‘green’ to my customers unless it is free or it creates value in some way. These points qualify my homes for the toughest standards generally associated with the ‘green’ label.

‘Green’ is NOT a bad thing!  It is misunderstood because of the reasons that I have stated.  I don’t suggest that you run away from everyone and everything that uses the word ‘green’ as a hook.  I propose the opposite!  Stand and ask the tough questions.  Ask them why.  Ask them how.  Ask them how often and by what measure.  Ask them to explain why you should give your green in exchange for their ‘green’!  If you see red (as in blushing) turn and run!

I hope this helps your understanding of the word ‘green’!

Great Article on our trade partner, Concrete Countertops, Etc.

From cement and water, a niche industry is born

Click here to read the full story

Click here to learn more about Concrete Countertops, Etc.

Key West

Key West 5 Bay HouseAs I write this blog, I am returning from a long weekend visit to Key West. Being among the oldest cities in Florida, Key West offers a rare glimpse into Florida’s past. Most Notable to me is how their lifestyles, weather, trade skills and material availability sculpted the vernacular architecture.

Key West is an inspired place. The fact that for over 50 years it was the wealthiest city in America per capita, is apparent in the intricately crafted woodwork on the oldest of homes. Being a maritime society gave Key West an unusually high number of skilled woodworkers, most of whom had worked in the construction or salvage of ships. It is amazing to me that in spite of the fact that there were no power tools, high tech mills, routers, and other modern conveniences, such incredible consideration was given to each home’s adornments. In my opinion, it is a testament to the pride of ownership that is nearly lost on America today.

The Key West vernacular architecture is, naturally, a blend of many traditional schools. Since there were indigenous peoples here, residents brought with them their knowledge of the prevailing architectural trends from their homelands and infused it with the local conditions, and materials that were available. As such, you will find Cracker, Bahamian, Antebellum, Greek Gothic and other styles. They are generally infused with the period popular, Victorian style. It is the Victorian element that most people associate with Key West, often referred to as “gingerbread”. The unique balustrade detailing that is so common on the island always enamors me.

It is hard to imagine ever building a home that is easier on the environment than these old homes. Most of the homes were built using the existing cypress and pine trees, present on the intended home-site. Many more were built with materials salvaged from the steady supply of shipwrecks present along the coast. These guys were recycling 180 years ago! No power was available on the island until the 1940’s so every home was designed using passive ventilation and cooling principles. The foundations were built from the quarried limestone that was removed to make way for the cistern. Cisterns were the only source of fresh water on the island so every home and business had one.

Leaving Key West leaves me feeling a bit sad that people now consider homes as assets that are to be traded or sold rather than the treasures that they once were. Those homes were built to house a family for generations. The pride and commitment to build an heirloom such as those homes, is rarely present today. The craftsmanship required to fill that need is rapidly being lost as we strive to live faster, bigger, cheaper, and more disposable. Do yourselves a favor and visit any historic city. When you look into those magnificent homes that still remain, consider the effort, pride, quality and commitment it must have taken build them in their day. Perhaps you will find yourself driven to build a home worthy of a conversation 150 years from now. If you do, I’ll be ready to assist you!

The making of a high performance green home on a budget - Framing, Rough-Ins, Insulation

For this home, concrete block was chosen for exterior walls. The materials and manufacturing are local and the cost is effective. SIPS (Structural Insulated Panel Systems) claim faster building times, less material waste, higher “R” values, and easier construction but I have not found this to be true. Concrete block is readily available, strong, can be fitted with insulation superior to most SIPS, can be completely recycled locally, and can be installed in just a few days. It is also about 15% cheaper than most SIPS. In some instances certain SIPS systems are superior but this was not such an application. The walls took just four days to install including the concrete beam work. All concrete and steel was recycled locally.

Concrete Block

 

 

 

 

 

 

 

 

Engineered, open webbed roof trusses were installed. These trusses are designed to be as strong as possible while keeping material use at a minimum.  Our trusses are treated at the plant with a proprietary boric acid product known as Frame Guard. The plant is local. Frame Guard is easily recognized by its green color. It is designed as a moldicide to prevent the growth of mold during the construction process and beyond. Boric acid also deters wood boring insects and is completely harmless to people. In fact, it is often used as a wash agent in the eyes of newborn babies.

Trusses

 

 

 

 

 

 

 

 

The roof deck is constructed of a product called ZIP-Ply. It is made from wood chips much like OSB. However, this product uses glues that are far superior to ordinary OSB. It is rated for direct exterior exposure. This is due in part to the pre-applied exterior membrane. This product is Miami-Dade rated as an approved secondary moisture barrier. If the primary roof ever blew off in a storm, this product would protect the home from moisture damage. Most homes utilize a nail down felt sheet that will blow off in a storm. This extra protection adds to the durability of the home and allows for a reduced home owner’s insurance rate. It also reduces materials and labor.

 

For interior framing, we utilized a locally sourced white pine framing, and treated with Borate where necessary for moisture exposure in wet walls and in contact with concrete. Low waste factors were used to ensure that nothing was wasted. Also, we used stacked wall construction to reduce the length requirements in the lumber. This saves money and materials without affecting quality.

 Interior Framing

Interior Framing

 

 

 

 

 

 

 

 

 

 

 

 

High efficiency vinyl windows with LOW-E, insulated, impact resistant glass were installed. The doors were of the same variety. All of these were sourced locally. Impact resistant glass is superior to protective coverings (shutters) for several reasons. Impact glass provides for an insurance discount, offers constant security, and protects your home without fail. Shutters only work if you’re there to install them and offer no insurance savings. I will only build with impact glass. The investment into these superior performing windows is quickly recovered through energy savings and insurance discounts. Not to mention piece of mind and comfort!

 Windows

Low-E Windows

Front Door

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Electrical rough-in included pre-wire for fluorescent lighting in all closet and utility applications. Switched circuits were used for LED rope light to provide ambiance without using much energy. All other lighting will be CFL or LED. There will be no incandescent or halogen lighting in this home. Bath fans were wired for timers to ensure that they are not left on longer than necessary. This home also includes a full structured wiring package and alarm pre-wire. The panel is ready to accept an inverter for a future installed solar PV system.

 

A solar hot water system is installed on the lighter colored roof shingle. This will provide all of the hot water to the 80 gallon tank located in the garage. A single valve shut-off for the washer supply is used to ensure easy shut-off in case of a flood. The utility room is located adjacent to the garage to control washer flooding if it ever occurs. Access to all in-wall valves has been framed for future service.

 Single Valve Shut Off

 

 

 

 

 

 

The HVAC system was sized by a mechanical engineer. In spite of this home’s size, only a 1.42 ton air conditioner is required to service this home. A 2 ton, 2 speed system using 2 zones is installed. It is a 20 SEER, Puron system by Bryant Evolution. All duct runs are centralized with remote returns. The entire system was sealed at install to ensure no construction debris enters the ducts. The air handler is located in a serviceable attic that is completely sealed and insulated. This will allow the system to operate at its peak efficiency. This system is tested by a third party using the ‘smoke test ‘ standard. It is a prerequisite to the Energy Star certification.

 HVAC

 

 

 

 

 

The exterior walls use to separate insulating systems. The primary is a Tri-polymer, urea-formaldehyde free, non-expanding foam. This will provide an R-10 factor. The second is perforated radiant barrier providing R-4.1. These systems are healthy, effective insulators that do not create a vapor barrier. Vapor barriers in FL create prime opportunity for mold growth. Foil-faced rigid insulation is such a vapor barrier and it only provides R-5.

Insulation

Insulation

 

 

 

 

 

 

 

 

All overhead insulation is R-21 Bio-Based sprayed foam insulation in an open-cell configuration. This creates a cool attic allowing for a better climate for your duct-work, and a cleaner indoor air quality. It also makes a really tight home. In fact, it is so tight that we use a ducted fresh air return for the HVAC system to keep the home’s pressure balanced! The insulation barriers are tested to the ‘Thermal By-Pass’ standard as a prerequisite to the Energy Star certification. We also created a barrier to the roof at the garage to prevent possible air contamination from vehicle exhaust.

Overhead Insulation

HVAC

 

 

 

 

 

 

 

 

All interior walls adjacent to common areas are insulated using a formaldehyde-free, healthy batt insulation to control sound. This feature is important to the livability and comfort of the home. All slab penetrations were sealed using a no-VOC sealant.

 

Interior considerations were made for pest control as well. The bottom three feet of all walls were treated with Bora-care, another boric acid based pest control designed to combat termites. All other lumber in the home is treated with Tim-Bor, a boric acid product designed to combat wood boring insects, and dry-wood and Formosan termites. For ordinary pest control we installed the Taexx system. It is a system of perforated tubes run in the walls. A mounting valve on the exterior of the home allows a pest control service to treat your home using EPE exempt products without even being home. No more baseboard spraying!

Exterior Termite Tube Junction Box

 

 

 

 

 

 

Drywall was installed on June 20th! We started digging on April 16th. How is that for efficient? Stay tuned for more. I will be finished by mid-August.

The making of a high performance green home on a budget - Foundation

Once all site conditions were considered, it was time to ’scalp’ the lot.
Scalping is the act of removing the organic matter (grass in this case) and
debris from the earth’s surface. This is done to ensure a good solid base
for construction. Organic’s will decompose and compromise the foundation if
not removed. The scalping are piled neatly on the lot and covered to prevent
erosion and speed the decomposition process. Rather than hauling them
offsite, they will be reused on site later in the process.

Clean fill was brought in to the appropriate grade. The footers were poured
using a high fly-ash content concrete. Fly-ash is an industrial waste
product. Using it in concrete is a great use for an otherwise useless waste
component. Using fly-ash also reduces the amount of mined aggregate
necessary for the mix. Fly-ash is sourced locally as are the other
aggregates in our concrete. All of our re-bar contains a high recycled
materials content as well.

Once the foundation walls were in and backfilled, it was time to install the
rough plumbing. The wastes are all PVC and the water lines CPVC. The making
of PVC is not an environmentally friendly process. However, the durability
of PVC over other available plumbing materials makes it the best option
available today. The plumbing layout was designed in a loop. This allows for
the use of a re-circulating pump. This will save water that is normally
wasted while waiting for hot water at the point of use. All hot water lines
were wrapped in Armor-Flex. It is in an insulator that protects the pipes
form the naturally cool earth. This will reduce hot water use and save
power.

No soil poison is used on my projects. These poisons are toxic to most
living things and are unnecessary for controlling sub-terranean termites.
Instead, I use a series of pest control measures that work independent of
one another. Below the slab, perforated tubes are installed and a fitting is
attached outside the home. If it any time termites are discovered below the
home, a single specific treatment may be applied without any damage to the
home or environment. Generally, sub-terranean termites are exterminated by
drilling holes throughout the home’s slab, and poison is injected. The
home’s floors are ruined.

Once the slab is prepped it is time to pour concrete. High fly-ash concrete
is used in conjunction with fiber-mesh. Fiber-mesh creates a stronger slab
and is used in place of wire mesh. Steel is a finite substance so we try to
minimize its use in areas with equally strong alternatives. Fly-ash slows
the curing process. Fast curing is the cause of most slab cracks in Florida.
Our slabs are stronger, and crack much less than equivalent slabs containing
no fly-ash.

Foundation 1Foundation 2

 

 

 

 

 

Foundation 3Foundation 4

The making of a high performance green home on a budget - Site Considerations

The Coon project got off to a late start. The site was in an area within 500 feet of a previously known Florida Scrub Jay nest. The portion of the site that we selected for construction was nothing more than pasture grass. There was no brush, bushes, or trees in the area of construction activity. For this reason, quick approval for construction was granted by the state EPA.

The site is a 3.5 acre parcel. The client currently resides in a home on the lot. The house is old with bad bones and a layout that we decided we couldn’t work with. Rather than tearing the current home down, it will be converted to a storage building/workshop. This will minimize landfill impacts.

 

A portion of the parcel is within the flood zone A12. The new home location was carefully placed outside of this area to reduce the risk of flooding. As a secondary measure, the home’s elevation will still exceed the flood elevation standard.

 

A drainage swale is located across the road frontage. The swale will remain open in keeping with the neighborhood. A culvert was placed for driveway access. Once the culvert was set, silt fence was placed in the front of the site to control erosion during construction. We also used grass seed to control erosion on the swale banks. A boundary for access was set to reduce soil compaction outside of the immediate construction zone.

Erosion ControlSilt FenceSilt Fence at Swale

Josh Wynne Construction featured in Green Home Builder Magazine!

Click here to read the article.

Asbestos in the Home - Guest Article

Constructing a home is a journey that is regarded as an old American Tradition. It will bring about many happy moments for you and your family. It is an investment of a lifetime but one that brings additional responsibilities. Many older homes may require structural repairs or renovations, especially for those who live near areas where natural disasters may occur. If your home was constructed before 1980, there is a chance it may still feature obsolete construction applications such as asbestos.

A fibrous mineral utilized for a greater part of the 20th century, it is still regarded as one of the more toxic building materials. If you are purchasing, remodeling or foreclosing an older home, you should be aware that many green Eco-friendly green options exist that replace the need for asbestos. By taking simple precautions, you can ensure that asbestos exposure will not occur in your home.

If any asbestos or hazardous materials are located, the best thing to do is leave it alone. Disturbing it can potentially damage and release its fibers airborne. Asbestos was used as prominent form of insulation for piping, flooring and roofing. It can appear in dry wall, attic insulation, popcorn ceilings, electrical wires and roof shingles. A Professional home inspector can identify the materials and provide an expert consultation for you. If the materials are deemed dangerous, removal may be necessary.

Consistent exposure to asbestos can potentially lead to the development of asbestos lung cancers such as asbestosis and mesothelioma. Due to the fact many mesothelioma symptoms are similar to less serious ailments, Diagnosis of mesothelioma is one of the more difficult tasks physicians encounter. The asbestos scandal was perpetuated by the asbestos industry and various corporate sectors in the country who buried any evidence that suggested the health concerns associated with asbestos. The high amount of asbestos-related incidents has lead to Mesothelioma lawyer firms advocating for victim rights.

Licensed abatement contractors who remove asbestos, will be familiar with the regulations in protecting you and themselves from exposure to asbestos. They must wear protective equipment such as masks and gloves to avoid any exposure. Once the removal is completed, it will be time to replace asbestos with healthy, green alternatives.

Recycled building materials that are viable options to asbestos include: cellulose, cotton fiber and lcynene foam. Cotton fiber is quickly becoming a favorite for home builders and renovators. Made from recycled batted material, it is also treated to be fireproof.

On February 17, 2009, President Barack Obama signed The American Recovery and Reinvestment Act into law. Included in this act were extensions of the Energy Efficiency Tax Incentives first enacted in 2005 as well as some new tax credits for people building or remodeling their homes using Eco-friendly or “green” materials.

The United Nations Environmental Program states that usage of recycled materials such as green insulation methods and lighting can reduce energy use by 25 percent. With a lackluster economy, these kinds of figures have attracted those who were unaware of Eco-friendly construction. The move to a greener lifestyle will build on the change to healthier methods of building products, home remodeling and renovation.

Installing Bio Based sprayed foam soybean insulation in a LEED Platinum Home

This video shows the installation technique used while installing sprayed
foam insulation. This video was shot at the Codding Cottage, one of the
highest scoring LEED Platinum homes in America. This house is located in
Sarasota Florida and was built by Josh Wynne Construction. The foam was
supplied by EcoTechnologies.