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Denby Energy Home Energy Consultant Program
Denby Energy Home Energy Consultant Program
Module 5:
Insulation,
Doors and Windows
Module 5:
Insulation,
Doors and Windows
Denby Energy, LLC © 2009, All Rights Reserved
1Insulation
a Types of Insulation
b R Value
c Inspecting
2Air Leaks and Gaps
a Finding Air Gaps
OutlineOutline
b Filling Air Gaps
c Problems with Tightness
4Windows
Outline (continued)Outline (continued)
a Types
bBarriers
3Fireplaces
5Summary
InsulationInsulation
According to Energy Star, 20% can be saved on heating and cooling by using proper insulating and sealing.
Insulation: Types Insulation: Types Form Insulation
MaterialsWhere Applicable Insulation Methods Advantages
Blanket or Batts
Fiberglass, mineral wool, plastic fibers, natural fibers
Unfinished walls Fitted between studs, joists and beams
Do-it-yourself
Foam Board or Rigid Foam
Polystyrene, Polyisocyanurate (polyiso), Poylurethane
Unfinished walls Must be covered with building code approved materials for fire safety
High insulation value for relatively little thickness
Loose Fill Cellulose, Fiberglass, Mineral Wool
Existing wall or open new wall cavities, unfinished attic floors; hard to reach places
Blown into places using special equipment; sometimes poured in
Good for adding insulation to existing finished areas
Sprayed Foam
Cementitious, Phenolic, Polyisocyanurate, Polyurethane
Enclosed existing wall or open new wall cavities, unfinished attic floors
Sprayed in Good for adding insulation to existing finished areas
Reflective System
Foil-faced kraft paper, plastic film, polyethylene bubbles, cardboard
Unfinished walls, ceilings and floors
Foils, films, or papers: fitted between wood frame studs, joists, beams
Do-it-yourself, effectiveness varies
Insulation: InspectingInsulation: Inspecting
What You See What It Probably Is
Depth (inches)
Total R-Value
Loose Fibers
Light weight yellow, pink, or white dense gray or near-white, may have black specks
FiberglassRock wool
= 2.5 x depth= 2.8 x depth
Small gray flat pieces or fibers (from newsprint)
Cellulose = 3.7 x depth
Granules Light-weight Vermiculite or perlite
= 2.7 x depth
Batts Light-weight yellow, pink or white
Fiberglass = 3.2 x depth
• Inspect the attic and any other areas of the house where there might be exposed insulation, such as walls and floors adjacent to the unheated space, like a garage or basement.
• Check for gaps in the insulation• Check for compression of the insulation