Designing & Building Home As System
- 1. Presented by Cheryl Lee C/L Design-Build, Inc. Designing & Building the Home as a System
- 2. Designing & Building a Home as a System WELCOME! FACT: Buildings use close to half of the world’s energy production with many of our new buildings being no more efficient than those built more than a century ago. Throughout this Expo, we will explore: Site Planning Building Envelope Resource Efficiency Energy Efficiency Water Efficiency Indoor Air Quality
- 3. Designing & Building a Home as a System
- 4. Designing & Building a Home as a System Site Planning Protect & enhance the natural features Minimize soil disturbance & erosion Manage storm water Landscape for water & energy conservation Consider solar orientation
- 5. Designing & Building a Home as a System Building Envelope Foundations Keep groundwater & water vapor out (water proofing; drainage) Keep soil gases out (vapor retarder; sealing) Keep heat in during winter (insulate) Thermal Envelope/Exterior Wall Assembly Airtight Construction Moisture Management Environmentally Appropriate Insulation Windows & Doors
- 6. Designing & Building a Home as a System
- 7. Designing & Building a Home as a System Airtight Construction Seal bottom plate with caulk (inside edge after walls are up) Seal rim/band joist Insulate exterior walls behind tubs/showers w/spray foam & insulation board Seal door thresholds to subfloor Seal windows & exterior door rough opening w/backer rod & caulk or non-expanding latex-based spray foam Seal electrical boxes on exterior walls w/caulk or foil tape Seal plumbing or HVAC penetrations w/caulk Install weatherstripping & insulate attic hatches
- 8. Designing & Building a Home as a System I-Joist & LVL Caulk at framing Cellulose Insulation
- 9. Designing & Building a Home as a System Moisture Management Deflection Roof overhangs (Eave & Rake) Illinois Climate Index is 35-65 For 2-story w/lap siding: overhangs should be 12”-18” Covered Entries Gutters & downspouts Divert water minimum 5’ away from home foundation Drainage Housewraps Metal flashing
- 10. Designing & Building a Home as a System Environmentally appropriate insulation
- 11. Designing & Building a Home as a System Windows & Glass Doors Low-e Glass Coatings- Transparent metallic oxides that Reflect up to 90% of long wave heat energy back into house While passing shorter wave, visible light Improves insulating value like adding another pane of glass Argon gas fillings Safe inert gas Boosts energy efficiency U-Factor Lower U-Factor indicates higher insulating value Solar Heat Gain Coefficient (SHGC) The fraction of solar radiation admitted through a window Lower number equals less solar heat/better shading
- 12. Designing & Building a Home as a System Resource Efficiency Reduce quantities of materials Enhance durability/reduce maintenance Use recycled materials Use renewable materials Recycle waste materials
- 13. Designing & Building a Home as a System Envelope Strategies Simplify house designs Optimize value engineering Align framing; eliminate unnecessary framing; “California Corners”; single top plate for non-bearing interior walls. Engineered wood products Uses 80% of each log vs. 50% for solid sawn Enhanced design values=longer spans Plywood; Oriented strand boards (OSB); I-joists; Laminated veneer lumber (LVL); Parallel strand lumber (PSL) Alternative Framing Systems Insulated Concrete Forms (ICF’s); Structurally Insulated Panels (SIP’s); Modular; Panelized wall systems; Trusses Alternative Siding Products Fibercement; Vinyl; Masonry
- 14. Designing & Building a Home as a System Envelope Strategies, Cont. Use Recycled Materials Reclaimed Flooring Reclaimed Timbers Cellulose Insulation Recycled Content Decking Glass tiles Composite Materials (MDF) for cabinets & trim Use Rapidly Renewable Materials Bamboo & cork flooring Eucalyptus wood in cabinetry
- 15. Designing & Building a Home as a System Envelope Strategies, Cont. Recycle Building Waste materials Masonry (as fill under porches, walks, and driveways) Cardboard Wood Copper Aluminum Drywall (reused in new drywall) Plastics Habitat For Humanity
- 16. Designing & Building a Home as a System Energy Efficiency Heating and Cooling Options Gas Furnace Direct Vent-High Efficient Furnace >90% 13 Seer AC is Code (17-20 Seer is best) Centralized Returns Equipment Sizing Programmable (set-back) Thermostat Duct Sealing Keeping Filters Clean Hydronic Systems Imbedded Floor Loops Geothermal Heat Pumps Shallow Trenches Bore Holes
- 17. Designing & Building a Home as a System Energy Efficiency Heating and Cooling Options, Cont. Humidity Control Humidistat/Hygrometer (30%) Ventilation & Fresh Air HRV; ERV; Fan-Air Cyclers Solar Thermal Passive & Active Solar Thermal Collectors Testing by Energy Raters/Inspection Services Blower Door Testing Duct Blaster Infrared Thermal Imaging
- 18. Designing & Building a Home as a System Energy Efficiency, Cont. Lighting (consumes 15% of household electricity) Lighting Control reduces electricity costs Dimmer Controls Timers Occupancy Sensors LED & Compact Fluorescent Bulbs Maximize Day Lighting Design Lighting for Performed Functions Exterior Solar Lighting Hot Water Distribution Direct Vent Gas Fired Tankless Solar with Electric or Gas Back-up
- 19. Designing & Building a Home as a System Energy Efficiency, Cont. Appliances Typical Household spends $1500/year & Energy Star Appliances save up to 30% Save water & electricity
- 20. Designing & Building a Home as a System Water Efficiency Indoor Water Conservation Practices Low-Flow Toilets Low-Flow Shower Heads Front-Loading Washing Machines Water Efficient Dishwashers Outdoor Water Conservation Practices Rainwater Collection Systems Sustainable Landscaping High-efficient Irrigation Programmable switches Timers Moisture/Rain Sensors
- 21. Designing & Building a Home as a System Indoor Air Quality Eliminate Pollutants Low VOC Materials Ventilate Controlled (Exhaust/Spot, Balanced/HRV’s) Filtrate/Air Cleaning Hepa Filters MERV Ratings (Min. Eff. Reporting Value-Higher number is better) Central Vacuum Systems Separate Seal Garage from rest of house
- 22. Designing & Building a Home as a System Last But Not Least Design & Build your home for your region Adobe construction not good for Midwest! Consider Universal Design for sustainability/longevity Good for resale- increases the number of buyers Use local products and native landscaping materials Usually a lower initial investment Helps the local economy, less shipping that can be better for environment Take the time to learn how to operate/maintain your home A well designed, quality home will fail if not maintained!
- 23. Designing & Building a Home as a System Next Presenter: Brandon Leavitt/Solar Service