 | Perform a HERS Rating before building |
| Never use a batt type insulation |
| Roofs should be R-50 or better |
| Walls should be R-20 or better |
| 1" exterior foam cuts thermal bridging at framing |
| Windows should be low-E |
| No thermal bypass |
| No voids |
| Limit window areas, especially on north walls |
| Use insulated doors |
| Use high efficiency furnaces and boilers |
| Insulate under radiant slabs, foils are not insulation |
| Prevent exterior flat work ( patios, garage floors, sidewalks) from
connecting to radiant slab edges |
| Ducts must be leak proof and pressure tested |
| Use heeled energy trusses with a minimum 16" heel on pitched roofs. |
| Flat roofs trusses need a 16" web at low side |
| Trusses are moore ventable than TJIs |
| Use heat recovery ventilators |
