Builder's Notebook Podcast: Stephanie Horowitz Joins!

ZED’s Stephanie Horowitz joins hosts Sarah Lawson and Bruce Irving to discuss the differences between high-performance, net zero, and passive homes and what it takes to design them. Stephanie, Sarah and Bruce also share their knowledge on updating an older home to make it more energy efficient, and why windows can make a world of a difference.

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Builder's Notebook: The Podcast shares practical advice to help listeners make informed and intelligent decisions about renovating or building a home. Hosted by Sarah Lawson and Bruce Irving, this informative, nuts and bolts series on home design, construction, and renovation will welcome industry experts and touch on a variety of topics.

ZED WINS GOLD AND SILVER IN 2021 PRISM AWARDS

ZeroEnergy Design took home two medals at the 2021 PRISM Awards, held annually to celebrate the best of the best in the local residential building industry. A record 331 PRISM entries were received this year with 12 judges from across the country choosing Gold and Silver crystal award winners who were announced at the gala.

ZED’s Hingham Marshfront home won a Gold PRISM Award for Best Single Family Home: 3,000 to 4,500 SF. This green home was designed for a Hingham-based couple who commuted to Boston for work and desired a modern residence on their marshfront property that fit with their green lifestyle. Outdoor connections include a gracious 1,000 SF deck with al fresco living areas overlooking the vegetated salt marsh, a vegetable garden and an outdoor shower. Green features include a super insulated enclosure, triple-glazed windows, efficient cold climate heat pumps for heating and cooling, plus a rooftop solar electric system to offset energy consumption. These features not only reflect the owners’ efforts to be ecologically responsible, but also their desire for year-round resilience, protection from the elements, and optimal thermal comfort.

ZED’s Mt. Hope Modern home won a Silver PRISM Award for Best High Performance/Energy Efficient Home. This seaside Portsmouth, Rhode Island home home features warm stylish interiors, incorporates coastal resilience, and achieves near net zero performance, all while capturing commanding ocean views. While the design of the home gives it the appearance of being light on its feet, it is truly heavy on both energy performance and durability. The all-electric, super-insulated home’s consumption is offset with clean energy production from a 20kW solar electric system - and in terms of performance, the home has an amazing 2.8kBtu/sf/yr actual EUI, which is effectively 95% better than a typical code build house in New England.

The Builders and Remodelers Association of Greater Boston (BRAGB) is one of the leading trade associations in New England since its inception in 1944. The PRISM Awards Gala is the BRAGB’s flagship event of the year and winning an award is considered a sign of excellence and superior achievement. Each entry submitted in the PRISM awards competition is judged on its own merit by a national panel of distinguished industry professionals.

MORE: Awards Presentation

 

In Progress: Acton Passive House

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New Home Targeting Passive House Certification. This newly constructed home nestled in the Acton woods is an exercise in restraint, simplicity and form, all working together to create a stylish, environmentally sensitive residence. The home is Passive House (PHIUS) pre-certified and is on its way to receiving full Passive House certification. As construction nears completion, we take a look at the blend of features that were carefully balanced to create a tranquil indoor environment with an efficient footprint. 

Designed for Respite from the City. ZED was engaged to design this custom home as a primary residence for the client, who desired quiet and respite from urban life. The client envisioned a combined living/kitchen/dining room as the home’s nexus, which we designed with a wall of continuous glass that wraps the southeast corner of the house, connecting the interior to the natural surroundings. The rest of the home’s 1,650 SF rectangular footprint is composed of two bedrooms, two bathrooms, an office and mechanical/laundry room, all of which follow a simple, modern aesthetic – polished concrete floors, minimalist fixtures, and glazed so as not to have to turn on a single light during the day.

Constructed for Small Operational Impact. Adhering to the Passive House standard means that this Acton home will have incredibly low operational energy. A floating raft of insulation beneath the concrete foundation, known as a mono form EZ slab, creates a thermal break as well as a form for the concrete slab. To complete the airtight foundation, Stego Wrap was installed as a vapor barrier before the concrete was poured. Construction wasn’t easy, interrupted more than once by major snowstorms and high winds, but contractor Adams + Beasley was up to the task, weathering the challenging elements without compromising on the super insulated envelope or energy features.

This Acton residence is a Pre-Certified Passive House (PHIUS+) and will target Passive House Certification once completed

This Acton residence is a Pre-Certified Passive House (PHIUS+) and will target Passive House Certification once completed

Vastly Reduced Embodied Energy. For the home’s walls, wood fiber continuous exterior insulation, combined with dense pack cellulose in the wall cavities, was used - not only is wood fiber 100% compostable at the end of its life, but also exceptional for acoustic insulation and fire safety. Air tightness was achieved through a continuous exterior air/water barrier. An 18-inch truss of dense pack cellulose was used to insulate the top-vented shed roof, minimizing the use of foam. Since there is no basement, there was far less concrete used to construct the foundation, meaning less embodied energy. The home also faces due south, so there will be exceptional solar access for the photovoltaic panels, which will produce enough electricity to arrive at net zero or net positive energy.

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Check out More Construction Imagery and Time Lapse Video from Adams + Beasley’s Portfolio Page.

FEATURE STORY IN OCEAN HOME MAGAZINE

Mt. Hope Modern, ZED’s green coastal home in Portsmouth, Rhode Island, was recently showcased by Ocean Home Magazine. This 4,700 SF modern home offers warm stylish interiors, incredible ocean views, and plenty of ways to enjoy the New England outdoor lifestyle.

The piece includes interviews with the owners, Kerry Tyson and Zack King, who describe stumbling upon the house while it was still under construction for the previous owner. They were so taken with it that they left their just-remodeled home in nearby Bristol in order to purchase and complete it. The couple was attracted to the modern, energy efficient design as well as the stunning views of Mount Hope Bay.

A pivot to the new owners was made possible by ZED’s flexible design. “We design custom homes that are tailored to the clients’ needs and aesthetics, but we’re always thinking about how they might be adapted in the future,” said architect Stephanie Horowitz. This was a great example of that process playing out, allowing the King’s to move in with their two children a year later.

Modifications to the design were made primarily to engage the exterior spaces. These included transforming the carport into a sheltered outdoor lounge, adding a pool with a clear glass panel enclosure, and building a fire table with outdoor dining areas beneath the second story deck. The King’s are thrilled with their new home and added, “there was no better place to be during the pandemic, especially for our kids.”

MORE: OCEAN HOME ARTICLE

MORE: MT. HOPE MODERN CASE

Hempcrete Comes to Cape Cod

Get a first look at this ZED consulting project (energy + HVAC design) in Harwich Port, MA where a hempcrete house is being built, one of the first of its kind in the country. ZeroEnergy Design provided the energy consulting and mechanical design for this forward-looking, carbon sequestering home. 

What is Hempcrete?
Hempcrete is a cutting edge biocomposite building material made from the chopped stalk of the hemp plant, a lime-based binder, and water. The result is a healthy, resilient and carbon beneficial building material that can be used to create a building’s thermal envelope, and which looks a bit like concrete. But unlike concrete, hempcrete actually sequesters carbon dioxide; a recent study showed that hempcrete can sequester 19 pounds of C02 per cubic foot. This progressive material is incredibly useful for: 1) reducing a building’s operational energy requirements with a well insulated, thermally broken, airtight enclosure, 2) sequestering carbon in the material itself, and 3) providing healthy indoor air via thermal mass and moisture absorbing behavior. 

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Material Attributes
Lime in the application of hempcrete uses about 80% less energy to calcine than when used in concrete. As an ‘air set’ material, the lime in hempcrete reabsorbs the CO2 that is driven off in calcining.

Hempcrete is resistant to mold growth, deters pests and won’t burn. The vapor permeable property of hempcrete also helps regulate building humidity, while its matrix structure provides excellent sound absorption.  

In addition to being a non-toxic and biodegradable material, hempcrete can be used to reduce construction waste by replacing drywall, which represents about 10% of building construction debris. Furthermore, hemp is a rapidly renewable resource with the greatest CO2-storing potential of any other insulation building material.

The Cape Cod Hemp House
The Cape Cod Hemp House exemplifies future focused, healthy, low carbon, net positive energy design. As this progressive home takes shape, we take a closer look at the carbon sequestering envelope, all-electric systems, and renewable energy sources that contribute to its net-zero energy makeup.

Envelope
The home's super-insulated envelope begins with 12 inch-thick walls with continuous hempcrete on the exterior and spray applied to a wood frame with bamboo wall lathe. The interior will be finished with a plaster coat. The roof includes hempcrete, wood sheathing, building wrap, and metal roofing. Triple pane windows round out the super insulated, airtight building enclosure.

Workers prep and spray hempcrete insulation between the 12 inch-thick exterior walls.

Workers prep and spray hempcrete insulation between the 12 inch-thick exterior walls.

Systems
High efficiency systems in the home include air source heat pumps, a heat pump hot water heater, and energy recovery ventilation. Rightsized air source heat pumps provide heating and cooling matched with the thermally improved building enclosure. Balanced heat and energy mechanical ventilation systems provide constant fresh air while also managing humidity levels. A heat pump hot water heater efficiently provides domestic hot water. 

Renewables
The all-electric home’s consumption is offset with clean energy production on the roof from a 15kW solar electric system with a whole-house backup battery. The photovoltaic array is expected to offset 120% of the total annual energy consumption, resulting in a net positive energy house. 

A Future for Hempcrete
While builders continue to see value in hempcrete, one of the limitations to its wider use is availability. Facilities capable of processing hemp into hempcrete are mostly in Europe and some regulatory challenges still exist in growing hemp itself, particularly in the U.S. But once more forward-thinking producers and builders start utilizing hemp for construction, it could lead to many more eco-friendly, high performance buildings.

MORE:  CAPE COD HEMP HOUSE

The interior side of the exterior envelope includes bamboo lathe with hempcrete inside the cavity.

The interior side of the exterior envelope includes bamboo lathe with hempcrete inside the cavity.

High-production European spray-applied hempcrete system. When completed, this project will be the first in North America to employ this system.

High-production European spray-applied hempcrete system. When completed, this project will be the first in North America to employ this system.

Brookline Masked Modern Home profiled in Modern Luxury Interiors Boston

Modern Luxury Interiors Boston profiled ZED’s Brookline Masked Modern residence, resulting in a detailed look inside this historic, green renovation project. The piece, titled ‘Framing History,’ touches on the design challenge of creating a modern home within an existing historic shell, and features many of the brands utilized throughout the home’s contemporary interior.

One of ZED’s goals for the project was to balance the historic front elevation of the home with the modern aesthetic of the interior and rear. This interplay is immediately apparent upon entering the home ground level, which features clean and elevated details throughout. Custom casework by Henrybuilt spruces up the entry area, Tom Dixon pendants add flair to the dining room, and distinctive Cle tile adds vibrancy to the kitchen backsplash. For the rear of the home, a gorgeous terraced landscape cascades down to a lower lawn, featuring outdoor dining areas and a swimming pool in between. Designing these functional outdoor spaces on such a steep slope was a particular challenge, notes ZED Senior Project Manager John Mucciarone, managed successfully through collaborating with Soren Deniord Design Studio.

The client, a family of five who had left their downtown Boston loft for a more generous home, desired plenty of recreational space inside as well. A home gym, an acoustically buffered entertainment center, and a play loft accessible via a climbing wall, are all examples of the family’s playful and active lifestyle.

The Brookline Masked Modern project completely renovated the building enclosure, adding super-insulation and triple pane windows to maximize thermal comfort with a minimal carbon footprint. ZED Managing Director Stephanie Horowitz adds, “When paired with all-electric, right-sized mechanical systems, the result is exceptionally low energy consumption - steps ahead of Brookline’s proposed ban on fossil fuels.” The result is a modern, low carbon home that masks modern with traditional, all while adhering to Brookline’s historic requirements.

Check out the profile here: Modern Luxury Interiors Boston

Boston Home Features ZED's Hingham Marshfront in Spring 2021 Issue

ZED’s new modern home in Hingham MA was featured in the Spring 2021 issue of Boston Home magazine alongside other incredible projects and helpful building green tips. The article, titled ‘Everything You Need to Know to Design a Greener Home,’ focuses on three forward-thinking projects that embody the best of sustainable design today. It’s also chock-full of useful tidbits and vernacular for anyone starting the conversation about building a net zero energy home, and includes concepts from green appliances to paint selections that contribute to a healthier home.

The net zero ‘eco-oasis’ in Hingham, designed by ZED’s Stephanie Horowitz and John Mucciarone, is profiled in detail. The 4,200 square foot home takes advantage of its natural surroundings with multiple decks overlooking the marsh and a large vegetable garden, all part of the owners desire to live a greener lifestyle. The home also includes a private guest studio above the garage, which allows their adult children added privacy and the ability to really spread out when visiting.

The Hingham home’s green features include continuous insulation, triple pane windows, air-source heat pumps, and a solar electric system, all contributing to net zero energy performance.

Check out the article here: Boston Home

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More project images and details coming soon to ZED’s Portfolio page.

Watch: ZED's Jordan Goldman Joins Clean Heat for Lexington Panel Discussion

ZED’s Jordan Goldman recently joined a virtual panel of local experts in construction, architectural engineering, and real estate to discuss the benefits of electrifying home heating and cooling systems.

The discussion was held by the Sustainable Lexington Committee (SLC) in order to gain support for Article 29, which petitions the Commonwealth to allow Lexington to regulate fossil fuel infrastructure in new construction and gut rehab renovations – an important step toward Lexington’s goal of ending greenhouse gas emissions by 2035.

Watch the video below:

The Panel:

CRAIG FOLEY, Chief Sustainability Officer at LAER Realty Partners, sold many high-performance properties in the Boston area and was 2019 chair of the National Association of Realtors Sustainability Advisory Group.

JORDAN GOLDMAN, Engineering Principal at ZeroEnergy Design, is an expert in energy modeling, HVAC systems, and mechanical design with extensive experience in energy-efficient system design, sizing, and construction.

MARK DOUGHTY, President of ThoughtForms Corp., brings 20 years of experience building energy-efficient buildings.

More information is available on the Clean Heat for Lexington website that was developed to promote the article.

ZED Awarded Best of Houzz 2021 for Design

ZED has won a Best of Houzz award for Design on Houzz, the leading online platform for home remodeling and design.

ZED is honored to receive this award for the ninth time. Only a small percentage of the 2.5 million home professionals on the platform receive a Best of Houzz award, a thrilling validation of ZED’s continued hard work providing the highest level of design service in the industry.

The Best of Houzz badge is awarded annually, in three categories: Design, Customer Service and Photography. Design awards honor professionals whose work was the most popular among the 40 million plus Houzz community.

“The Best of Houzz awards are an emblem of trust and credibility for home professionals across the U.S. and around the world, and we are excited to celebrate this year’s winners,” said Liza Hausman, vice president of Industry Marketing for Houzz. “The COVID-19 pandemic has highlighted the critical need for people to feel comfortable before inviting pros into and around their homes, and the Best Of Houzz badge is a powerful way for pros to communicate the trust that homeowners have in their business. It’s just one of many tools on the Houzz platform that help pros to communicate their unique expertise, and homeowners to find the right professionals for their projects.”

The 2021 Best of Houzz award is ZED’s ninth year winning the Best of Houzz Design award and thirteenth Best of Houzz award overall.

MORE: AWARDS

ZED'S PASSIVE HOUSE RETREAT FEATURED IN HOMIFY

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Homify, an online architecture and interior design platform, recently featured ZeroEnergy Design’s Passive House Retreat in an article about space saving kitchens. Specifically focused on single-wall kitchens, the article mentions how the Passive House Retreat kitchen utilizes a large island to increase the usable surface area, while also creating a pleasing separation of the cooking space from the open dining and living areas.

The Passive House Retreat’s single-wall kitchen makes a statement with its playful red wall and gable form, which was planned as the defining aesthetic feature of the home. Its iconic shape and red color is carried from the eastern exterior red gable, through to the interior kitchen wall, to the living space, and back outside to the opposite western exterior gable end. Inside, a clean fresh look is achieved with minimal trim, simple polished concrete floors, and careful glazing selection.

MORE: Homify Article

ZED EARNS 2021 AWARD FOR EXCELLENCE IN SUSTAINABLE ARCHITECTURE

LUX Life Magazine has selected ZeroEnergy Design for the 2021 Award for Excellence in Sustainable Architecture - Massachusetts.

Now in its fourth year, the 2021 Leading Designers Awards have been designed to recognize the companies, teams and individuals who are excelling in this ever-growing industry - those who set the highest standards by pushing creative boundaries within the industry of architecture, interior design, furniture and product design, and property development.

LUX Life’s dedicated team of in-house researchers have handpicked each participant - ranging from the most innovative full-service design firms, to experts in bespoke furniture design, all the way to home transformation specialists. This proven approach ensures that firms are awarded on merit, and not popularity, and recognize the very best in the business.

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AIA 2030 Commitment Report + ZeroEnergy Design

According to the newly released 2019 Summary of the AIA 2030 Commitment report, ZeroEnergy Design is one of only 27 firms nationwide to achieve 70% or greater predicted EUI savings across their entire architectural portfolio in 2019.

The AIA 2030 Commitment program supports the AIA 2030 challenge, which calls for all new construction and major renovations to be carbon neutral by the year 2030 and provides architects, engineers, and owners a global platform to demonstrate action against climate change through energy-efficient design.

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Each year, the 2030 signatories track and report their annual progress against increasingly aggressive energy reduction targets. This year, ZED reported an impressive 97.9% reduction in pEUI savings across its entire architectural portfolio, easily achieving the targeted 70% carbon reduction for the ninth consecutive year.

The 2030 Commitment currently has 549 active signatories, out of which 311 firms submitted portfolios in 2019 on projects totaling 3.3 billion square feet across 107 countries. Together, these projects accounted for an overall pEUI reduction equivalent to avoiding 20.2 million tons of CO2 emissions.

Click below for the full report.

MORE: AIA 2030 Commitment Report

Top 10 Coastal Architect of 2020

Ocean Modern Home named ZeroEnergy Design as a Top 10 Coastal Architect of 2020. In the words of Ocean Modern, they selected "ten award-winning firms recognized for their commitment to excellence, innovative design, and sustainable building practices. Each firm represents best-in-class architects with forward-thinking designs for building the spaces of the future."

ZeroEnergy Design is grateful to be among those selected!

MORE: Ocean Modern Article

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Home Builder Digest Names ZED on ‘Best Beach House Architects’ List

ZeroEnergy Design is delighted to be named by Home Builder Digest as one of the ‘Best Beach House Architects’ in the nation. Each of the 50 architects featured in the list was chosen by the editorial team at Home Builder Digest based on experience, merit, and portfolio.

Beachfront sites feature some of the most beautiful houses in the country, and designing such homes comes both with challenges and requires certain expertise. The article features ZED’s Truro Modern Beach Home, an award-winning project with an AIA Sustainable Design Citation. Spanning 6,600 sq. ft., the house features several amenities such as a chef’s kitchen, radiant floors, a photovoltaic system, no-VOC materials, and more.

MORE: HOME BUILDER DIGEST | TRURO BEACH HOME

Brookline Masked Modern - New Case Study - Custom Home Design

ZED is pleased to release our latest Custom Home Design Case Study - the Brookline Masked Modern home in Brookline, Massachusetts. Architecture and Mechanical Design by ZED.

Listed in the National Register of Historic Places in the Fisher Hill neighborhood, the home was originally built as a stable for a larger estate before it was relocated and converted to a residence in the 1920s. ZED’s new design revisions the space to better suit a growing family of five and creates a comfortable and environmentally sensible place to live with modern aesthetics, plenty of natural light, and multiple outdoor recreational spaces - all while preserving the historic exterior.

Full case study is linked below.

MORE: BROOKLINE MASKED MODERN CASE STUDY

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ZED's Lincoln Net Positive Farmhouse Featured in Houzz

Houzz’s new article on sustainability solutions from across the world showcases ZeroEnergy Design’s Lincoln Net Positive Farmhouse - a modern home that utilizes energy-efficient techniques to produce more energy than it consumes while blending into the rich, cultural landscape of Lincoln, Massachusetts.

With a super-insulated building envelope, high-performance triple-pane windows, thoughtfully designed mechanical systems, and high-efficiency appliances, the all-electric Lincoln Net Positive Home consumes 70% less energy than a similar house built to code. An air source heat pump and an energy recovery ventilator ensure optimal thermal comfort and fresh, clean air throughout the year while a 13.1 kW array of solar panels produces 67% more energy than its annual consumption. The article and complete case study are linked below.

MORE: HOUZZ ARTICLE
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ZED's Jordan Goldman To Discuss Mini-Splits on The BS* + Beer Show

The BS* + Beer Show, a weekly talk show focusing on hot topics in building science, will have its next broadcast on Thursday, April 30, 2020 at 6: 00 - 7:30 PM EST. This session “Making the Most of Mini-Splits” will focus on how and where are mini-split air source heat pumps best used, if they are right for every situation, and when are they not the best choice.

Special panelists for this live discussion include ZED Mechanical Engineering Principal Jordan Goldman, Positive Energy’s Kristof Irwin, and Ripcord Engineering’s Jacob Staub.

You can register in advance for the Zoom meeting here.

Fine Homebuilding Magazine and Green Building Advisor provide technical and organization support for the BS* + Beer Show. Previous show recordings are available on Green Building Advisor.

MORE: THE BS* + BEER SHOW (MINI-SPLITS)

Forbes PROFILES Zero Energy Architecture LEADER

Noted author and expert on small/prefabricated houses, Sheri Koones, profiled ZED and interviewed Managing Director, Stephanie Horowitz, for Forbes.

Horowitz described how the firm’s commitment to making energy efficiency, health, and comfort baseline attributes for all projects, allows it to instead use the design time to create spaces that are beautiful, functional, and durable.

She also discussed ZED’s Lincoln Farmhouse and Dartmouth Oceanfront projects, while sharing that changes in the building codes were necessary to bring energy-efficient homes into the mainstream.

Full article is linked below.

MORE: ZED - LEADERS IN ZERO ENERGY ARCHITECTURE

South End Family Loft by ZED In Archinect's Spotlight On Boston

Popular online resource for architects and designers, Archinect, just selected ZED’s Boston Family Loft as one of their 10 favorite residential architectural projects in the greater Boston area. The list was published as part of their month-long Spotlight on Boston and will be followed next week by Boston’s outstanding academic and workplace projects.

The two-story Boston Family Loft was originally built in the 1990s. ZED transformed this space for a growing family in an urban setting, adding a fresh, new look and increased functionality. Read all about it here - BOSTON FAMILY LOFT CASE STUDY.

MORE: BOSTON FAMILY LOFT IN ARCHINECT

ZED's Concord Green Home in Forbes

We are excited to see ZED’s Concord Green Home featured in the new Forbes article on the role of the thermal envelope in limiting energy and water consumption. Describing the Concord, MA, project as “one of the best examples of thoughtful use of appropriate materials,” the writer explains how the use of small windows in the north-facing front of the house and the larger windows in the rear work together to optimize solar gain and minimize heat loss.

ZED designed the Concord home to be a healthy and energy-efficient home right from the start. Since indoor air quality was one of the highest priorities for the client, care was taken to specify building materials that would not emit irritating gases. ZED also used design and energy modeling to prioritize efficiency improvements (such as extra insulation, high-performance windows, and an efficient heating and cooling system) and help the owner evaluate numerous window layouts, window models/manufacturers, and glazing options to select a package that offered the most attractive total cost of ownership, daylit space, and a future upgrade path for renewable energy.

As a result, each room in the house has windows on at least two walls - ensuring two different light sources and optimal cross ventilation. The overall design is Energy Star Certified to consume 50% less energy than a typical brand new home.

Read more about Concord Green Home case study.

MORE: CONCORD GREEN HOME IN FORBES