Louver - A vented opening into the home that has a series of horizontal slats and arranged to permit ventilation but to exclude rain, snow, light, insects, or other living creatures.

Outrigger - An extension of a rafter beyond the wall line. Usually a smaller member nailed to a larger rafter to form a cornice or roof overhang.

Bedrock - A subsurface layer of earth that is suitable to support a structure.

Blocked (rafters) - Short "2 by 4's" used to keep rafters from twisting, and installed at the ends and at mid -span.

EER (energy efficiency ratio) - A measure of cooling efficiency computer by dividing a cooling unit's output in BTUs by its input in watts.

Incandescent lamp - A lamp employing an electrically charged metal filament that glows at white heat. A typical light bulb.

ú Septic permit - A health department authorization to build or modify a septic system.

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