The Hansen House Part 11: The Kitchen

The workspace of the Hansen House’s kitchen is under the loft while the rest of the kitchen is open to above and out to the great room and dining area.  The open ceiling allows the natural light to flow in through the windows above and all around. IMG_2316 IMG_2330 IMG_2312 The flooring is ungauged slate.  The slate provides a natural earthy coloring and interesting cleft textures to the floor. Photo Feb 22, 11 28 10 AMPhoto Feb 22, 3 26 35 PM The back splash matches the slate on the flooring. IMG_2337 Shawn Hollenshead Cabinetry beautifully constructed the kitchen cabinetry as well was other elements throughout the Hansen House.  The flat panel Shaker doors were made out of soft maple with Sherwin Williams traditional Cherry stain with a sating sheen topcoat. Hansen Kitchen 01Hansen Kitchen 02 All of the doors and drawers are soft close and many have custom elements that were beautifully orchestrated by Shawn Hollenshead Cabinetry. Photo Mar 01, 12 47 47 PM The elegant countertops are made from Uba Tuba granite. IMG_2340IMG_2317 One of the unique features of the kitchen is the window seat with a built-in storage area. Hansen Finished (47) IMG_2328 The window seat is part of the seating area of the kitchen that has magnificent views of the gorgeous grounds.  These views extend throughout the great room, loft, master suite and guest rooms. Hansen Finished (3) Hansen Finished (7) Hansen_05-08-13 006 The kitchen opens up to the dining area and the great room. IMG_2310 IMG_2338

Hugh Lofting Gains PHIUS Certification

Congratulations to our sister company, Hugh Lofting Timber Framing, Inc: Hugh Lofting Timber Framing Gains Passive House Certification Company recognized by Passive House Institute US as one of only seven Certified PHIUS Builders in Pennsylvania; passive house project underway in West Chester, Pa. Hugh Lofting Timber Framing, Inc. has been recognized by the Passive House Institute US as a PHIUS Certified Builder, and has a passive house under construction in West Chester, Pa. The PHIUS designation means the company understands passive house principles, has mastered craftsmanship techniques specific to passive houses, and can meet challenges specific to the North American climate. A passive house achieves overall energy savings of 60-70 percent through super-insulation and airtight building envelopes, highly efficient HVAC systems or energy recovery ventilation, high-performance windows, and moisture control. Passive construction does not employ active technologies such as photovoltaics, and can thereby be less expensive when the principles are used alone. According to the U.S. Department of Energy’s Challenge Home program, passive and active design principles used together can be the best direction toward Net Zero houses. “Hugh Lofting Timber Framing has long been committed to energy and design efficiency,” said founder Hugh Lofting. “The firm has embraced the use of FSC-certified timbers, reclaimed and salvaged woods, and environmentally aware finishes. Attaining PHIUS certification demonstrates to our clients and colleagues that we remain focused on long-lasting, energy-efficient homes and buildings.” A passive house is heated primarily by passive solar gain and by internal gains from people and electrical equipment. Energy loss is minimized through super-insulation and an airtight building envelope. Shading and window orientation help to avoid heat gain, which limits cooling loads. Superior air quality and comfort are accomplished with a heat/energy recovery ventilator. PHIUS Certified Builders have passed a four-day training program and a written exam. There are 45 PHIUS Certified Builders in the U.S. Hugh Lofting Timber Framing, Inc. is one of seven in Pennsylvania. Hugh Lofting Timber Framing presently has a passive house in construction in West Chester, Pa.  To find out more on this project, visit the owner’s blog The Winding Path to a Simple Home.  The 2,000-square-foot residence includes high-performance Intus windows and a super-insulated structure. Completion is planned for early 2014. The house will stand as a local example of passive house techniques blended with timber frame craftsmanship. About Passive House Institute US Passive House Institute US is a registered 501(c)3. The organization’s goal is to build a network of other organizations and individuals to share expertise, resources, and effort toward goals of energy conservation, sustainability, smart growth, systems thinking in design, and a higher quality of life for all. For more information visit http://www.passivehouse.us.

The Hansen House Part 2: Foundation

Since HJLCMS broke ground on June 1st on the Hansen House, there has been a lot of progress on site.  We wanted to make sure that none of the trees were unnecessarily disturbed by the construction process so signs were placed at drip lines of the trees to protect the root systems. The new driveway was engineered to share a portion of the existing driveway to reduce the footprint of new construction.  Gravel was used because it is a permeable surface that allows rainwater to be absorbed and therefore naturally filtered. Once the driveway was complete, the crew excavated the area for the house and dug out the footers. The Hansen House is designed as an energy-efficient building.  One of the keys to an energy-efficient building is the use of high levels of insulation.  The concrete footers and block foundation both contribute to the super insulated slab and insulated slab ledge. Because heat is lost through foundation walls and concrete slabs, it is important to insulate them.  There is 2” rigid foam insulation along the perimeter walls of the block foundation.  The foundation is part of the house’s thermal envelope.  A clear penetrating sealer has been applied on all perimeter walls from the footers to the tops of walls to damp proof the foundation.  The insulated foundation contributes to the conservation of energy and heating and cooling costs and also eliminates potential moisture and mold problems. Check back for the next phase of construction.

Off-The-Grid Home

Just south of Annapolis, Maryland HJLCMS constructed an off-the-grid home.  Tucked far back from the road the property enjoys the peace and quiet of farmland views and a backdrop of forest. But don’t let the bucolic surroundings or the craftsman appearance fool you. This new residence is a thoroughly up-to-date, sustainable home filled with cutting edge technology that had a very aggressive mission – provide a modern lifestyle for a family of four while minimizing their footprint on the Earth. This project’s environmental highlights include:
  • Creating a beautiful structure that brings joy for many generations
  • Generate all electricity on-site
  • Source all domestic and landscape water from rainwater capture or on-site resources
  • Maintain all storm water on-site through capture or infiltration
  • Use of local tradespeople and utilizing natural, local and/or recycled materials
  • Minimize construction disturbance and waste
  • Create and maintain a healthy indoor environment
  • Off-the-grid living
HJLCMS and Hugh Lofting Timber Framing (HLTF) designed and built the home to work with the Earth.  “The house is sited to maximize passive solar gain in the winter but is designed to be shaded from too much sun in the summer,” says Hugh Lofting, company president. Concrete floors and a real fireplace, made from Avondale Quarry stone, were used to create a thermal mass to maximize passive solar heat gain. Coupled with tight construction and a seamless blanket of insulation is a solar thermal heating system installed by Radiant Comfort Systems that utilizes the heat energy of the sun to warm the in-floor radiant system.

South facing wall, designed for maximum solar gain

For those few really cold days, peak-heating demand can be met with two wood burning stoves and a geothermal heat pump.

This is where the wood stove now sits.

All three floors of the home contain radiant heat.  The basement and the first floor are hand troweled concrete which is stained then polished. Both locally sourced labor and material were used to help bolster LEED rating points.  Additionally the recycled content of the concrete was traced and documented to gain additional points. Local, yet nationally recognized, company Hyde Concrete was contracted to transform the concrete from a gray slab of material to a finished product with deep tones of color to create a warm atmosphere.

Hand troweled concrete floors

From the warm leather tones in the finished basement entertainment area to the accents in the terra-cotta first floor the polished concrete brings a modern touch to the home.

Stained and polished concrete floor.

The same solar thermal system provides domestic hot water to the home.  The domestic water system is backed up with a propane fired instant hot water system for peak demand. The hot, humid summers of coastal Maryland posed a comfort challenge.  The home is positioned to take advantage of prevailing winds for natural ventilation and is equipped with large, high-efficiency, operable windows throughout.

Positioned for prevailing winds and natural ventilation

The mechanical system includes passive nighttime cooling through the solar thermal panels with a geothermal heat pump as back up. Regardless of the mode of operation, a healthy indoor air is maintained via Energy Recovery Ventilator (ERV) that efficiently maintains temperature while introducing fresh air. In addition to using ERV, the home utilizes the radiant system to cool the home.  Radiant cooling along with minimal ducting help control the humidity and allow the home to be comfortable in the summer. HJLCMS utilized a systems approach to construction that reduced site generated waste and construction time while increasing quality control.  The precast concrete foundation wall system from Ideal Walls provides an R-23.5 at the basement walls. The timber frame crafted in the HLTF shop is enveloped by Murus Company Structural Insulated Panels (SIPS) that provides R-40 insulation on the walls and roof. Although there are a number of windows on the south wall for solar gain, windows on the other faces are limited and all windows are high-efficiency Serious Windows, series 700 or 900, providing at least an R-5.6 and SHGC of .21.  Energy modeling shading simulation software was used to determine the most efficient percentage of window area to wall for the North, South, East and West walls. This Off-The-Grid house has exceeded expectations with its performance and intuitive design.  The homeowners are thrilled that their dreams of an up-to-date, sustainable home filled with cutting edge technology have come true without having to sacrifice their craftsman style aesthetic.  This house proves that modern technology can be used in any style home.

LEED for Home Silver Certified Residence

This Kennett Square, PA residence is a hybrid construction bringing together timber framing with Structural Insulated Panels to form a framework that rests on a Superior Wall Foundation.  Built almost entirely off-site, little waste was generated during construction. The focus of the design and construction team was to reduce the home’s impact on the environment by sourcing materials locally and with high recycled content, minimizing site disturbance, installing energy and water efficient systems and appliances, installing native plant landscaping and implementing innovative green building techniques that include installing a sedum planted roof, natural ventilation and rain gardens for on-site stormwater recharge. The Kennett Square, PA Residence earned Silver Certification from the US Green Building Council’s LEED for Homes program.  Constructed in 2007-2008, the home was the first LEED for Homes certified residence in Chester County, PA.  The home was also awarded Energy Star home certification with a HERS (Home Energy Rating System) rating of 51, 34 points below the Energy Star target threshold. Sustainable elements in this residence: Foundation Superior Walls precast concrete foundation Xi (X-tra insulation) system with crushed stone footing system for basement and crawls space areas.  All concrete for slab footers and foundation contains either blast furnace slag or coal fly ash in 25% in mix. Basement, Garage, Crawl Space & Common Building Slab 4” concrete slab to contains either blast furnace slag or coal fly ash 25% in mix.  Entire slab insulated with 2” rigid foam with 6-mil polyethylene vapor barrier. Floor System Weyerhaeuser Trus Joist TJI Timberstrand LSL floor joist system and Timberstrand rim board.  Subfloor is ¾” T&G Advantech OSB. Radiant Floor This house boasts radiant heat floors, with multiple zone controls.  The homeowner can tailor room temperatures to suit each areas specific heating requirements.   Wall System Structural Insulated Panels (SIP’s) nominal 4.5” (two 7/16” OSB Skin) 3 11/16” polyurethane XPS structural core R-26 manufactured by Foard Panel, panels are XPS structural. Siding and Exterior Finish Siding is new rough sawn cypress, a rapidly renewable resource.  Moisture shield system consists of paper and cedar breather. Fieldstone walls and pavers constructed of local stone from the Avondale Quarry.  Blue stone paving material is from local sources for patio and walkways. Roof Framing SIP’s are nominal 6.5” (two 7/16” OSB Skin) 5 11/16” polyurethane EPS structural core R-40 manufactured by Foard Panel. Roofing All pitched roof areas are Galvalum standing seam metal roofing with paper and cedar breather underlayment.  The flat roof area is white reflective membrane material EPDM by Firestone and is planted out using Weston’s Green Grid roof containment system. Windows and Exterior Glass Doors All glazing is Loewen Heat Smart Plus 1 Energy Star rated U value of .33.  All exterior windows and doors are flashed with galvanized flashing and sealed with Grace “Vycor Plus” self-adhered membrane. Building Insulation Cor-Bond open cell spray foam installed over garage under second floor bedroom space, at joint between Superior Wall and Panels, at first and second floor joint and around al window and door penetrations.  Ceiling of garage augmented with Green Guard Knauf Industries R-19 batt insulation.  Flat roof areas built up with double layer of sheet insulation.  Ceiling of basement insulated with Green Guard Knauf Industries foil faced R-19 batt insulation.  Walls of heated areas of basement insulated with Green Guard Knauf Industries kraft faced R-13 batt insulation. Gypsum Wall Board & Adhesives Flu-gas gypsum wall board (GWB).  As many construction adhesives as possible were low VOC solvent free products. Interior Trim            All baseboard trim in lodge building, entry and basement and all door casting in-house are painted poplar from trees milled on property. All baseboards in first and second floors of remainder of house are FSC certified reclaimed heart pine to match flooring. Interior Doors Interior doors are solid wood FSC certified. Interior Finishes All paint is zero VOC, low odor and silica free product.  All stains and clear finishes are low VOC solvent free products. Flooring The lodge building features FSC reclaimed antique barn wood flooring finished with Tung Oil and a coat of polyurethane for finish.  At the fireplace hearth are paver bricks reclaimed from the Baltimore Depository/Mint.  The entry is tiled with African Slate, installed by a local tile company.  The remainder of the house features FSC reclaimed heart pine finished with Tung Oil and a coat of polyurethane for finish. Lighting Fixtures Many lighting fixtures are energy star rated, capable of accommodating compact fluorescent light bulbs, on dimmers or low voltage. Ceiling Fans All ceiling fans are energy star rated. Bathroom Fans All bathroom fans are Panasonic WhisperGreen with SmartAction. Plumbing All plumbing fixtures are high efficiency low flow fixtures (lavatory <2GPM, showerhead <2GPM).  All domestic water piping is PEX tubing.  Two Noritz Model N-084M Power Vent on demand propane water heaters. Kitchen Cabinets are made with FSC certified wood with natural, no VOC organic finishes and no urea formaldehyde.  The countertops are soapstone and wood. Fireplace The fireplace is constructed of Avondale Quarry stone with outside combustion air supply and damper system. HVAC System Heat on first floor, garage and 1/3 of basement is a combination of in-floor, staple down and staple up 4-zone radiant system utilizing a propane fired Munchkin Vision II boiler.  The boiler has 96% combustion efficiency.  Heat on second floor is a 1-zone forced air system fired by the Munchkin Vision II boiler.  Air conditioning is provided by two separate American Standard systems: one with one zone is a 16 SEE, 2.0 ton system, on with three zones is a 16 SEER, 4.0 ton system.  All metal duct joints sealed with tape or mastic as appropriate.  All flex duct sealed with tape or mastic.  All wall cavity returns are lined with thermonpan.  All floor registers sealed to keep out dust.