Across
- 2. __________-_____ (us dept of energy )- the amount of insulation or r-value you'll need depends on your climate, type of heating and cooling system, and the part of the house you plan to insulate.
- 4. an electromagnetic wave, think sunlite.
- 7. ___-____ is a ridge of ice that forms at the edge of a roof and prevents melting snow (water) from draining off the roof. the water that backs up behind the dam can leak into a home and cause damage to walls, ceilings, insulation and other areas.
- 9. is a system that uses the heat in stale exhaust air to preheat incoming fresh air. this reduces the energy required to bring outside air up to ambient room temperature so saves money on heating bills.
- 12. _-_____ is a measure of insulation’s ability to resist heat traveling through it.
- 13. is the most common insulation, but has the lowest r-value. it’s made from molten glass, recycled industrial waste and post-consumer content.
- 14. heat that moves from one body to another by direct contact. touch a steam pipe and it burns you.
- 15. is an open-cell foam. flammable, most foams must be covered with sheetrock or other approved materials.
- 16. wood and paper products.
- 17. _____-_____ drawn through insulation from warm to cold. inside the wall, this can condense into liquid water on cold surfaces, such as the back side of the siding in winter and can lead to structural decay and insect damage.
- 18. _______-________ the movement of heat across an object that is more conductive than the materials around it. a major source of energy loss in homes and buildings, leading to higher utility bills.
Down
- 1. it is molten mineral or rock material insulation such as slag and ceramics.
- 3. _________-________-______ usually consist of osb sandwiched with a core of expanded foam.
- 5. concrete forms stay-in-place formwork made from insulating materials used in cast-in-place concrete walls.
- 6. _-_____ an alternative to solid 2×6 framing lumber. can be used for pretty much any framing element in exterior walls: studs, jacks, cripples, plates, and headers. they are designed for advanced framing.
- 8. a silicate mineral that expands greatly when heated and used as insulation. an asbestos containing insulation in homes up to the 1960s but more common in older homes.
- 10. ___-___ is the most destructive wood decaying fungus found in building timber. it can develop and destroy wood very quickly.
- 11. panels rigid panel insulation is made from fibrous materials (fiberglass, rock and slag wool) or from plastic foam.
- 16. warm fluids (air) tend to rise while the surrounding cool fluids (air) fall. this rising-and-falling motion tends to form loops, or convective loops. a forced example would be a fan forced furnace or a blow dryer.