CARBON SMART = Reducing Operational and Embodied Energy
Embodied Carbon Reduction With Natural, Responsible Carbon Sequestering Assemblies
Holzraum System Performance Envelopes
Our envelopes are built with only wood-based materials allowing nature to deliver extremely high-tech benefits that synthetics just can't touch. (Currently available for project sites within a delivery radius of 4 hours from Baltimore - some exceptions will be considered)
Vapor Open Exterior Insulation
Wood fiber’s natural ability to store and release moisture and its' high vapor permeability of 20 perms allows the wall and roof assemblies to provide between 2x and 4x the drying capacity when compared to outside layers for typical plywood or OSB sheathed assemblies.
Health and Indoor Air Quality
Indoor air quality starts with how the structure is built and what products were used to build it. Holzraum System's use of only natural and fully breathable layers in our wall and roof assemblies insures that synthetic chemicals are not introduced into the structure and that unhealthy conditions like mold and rot won't develop during occupancy.
Thermal Storage Capacity
Compared with conventional insulation materials like glass wool or foam, wood fiber insulation comes with an especially high density. This creates a phase shift or delay in thermal transfer time through the fabric of the building so that the midday temperatures only reach the internal side when it's already cooler outside.
Moisture Management | Hygric Buffering
Holzraum wooden assemblies are hygroscopic, meaning they can absorb, store, and redistribute water - acting as a moisture buffer. When the air is very dry, the materials will release moisture into the indoor air (by evaporation). Eliminating low permeability layers like foam insulation allows the movement of excess moisture through the envelope instead of trapping it within the wall or roof assemblies where it can cause problems like mold, rot, and reduced insulating capacity.
Carbon Sequestration = Carbon Smart
Building construction and operation represent a large portion of annual CO2 emissions. Unlike concrete, steel, and other synthetic materials which release large amounts of CO2 during production, wooden assemblies hold carbon in their structure, significantly reducing your project's embodied energy footprint while also reducing operational energy by employing passive house strategies.
Chain of Custody Material Sourcing - PEFC Certified
A critical requirement to delivering our envelope's extremely low carbon footprint is to ensure sustainable material sourcing. All structural and non-structural framing elements in Holzraum System interior/exterior wall panels, roof panels and floor panels are manufactured using PEFC certified materials. www.pefc.org
WOOD BASED PARTS deliver High Tech Performance
OPERATIONAL CARBON REDUCTION with PASSIVE HOUSE STRATEGIES
Holzraum System staffs certified passive house consultants who can provide a customized level of energy modeling through full Phius +2018 building certification. Learn more about Passive House at www.phius.org
Passive building comprises a set of design principles used to attain a quantifiable and rigorous level of energy efficiency, indoor air quality, comfort, and building resilience.
The Passive House Core Principles include:
Employs continuous insulation throughout its entire envelope without any thermal bridging.
The building envelope is extremely airtight, preventing infiltration of outside air and loss of conditioned air.
Employs high-performance doors and windows (double or triple-paned windows depending on climate and building type)
Solar gain is managed to harness the sun's energy for heating purposes in the heating season and to minimize overheating during the cooling season.
Uses some form of balanced heat and moisture-recovery ventilation.
Uses a minimal space conditioning system. Passive design strategy carefully models and balances a comprehensive set of factors including heat emissions from appliances and occupants to keep the building at comfortable and consistent indoor temperatures throughout the heating and cooling seasons.