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Weatherizin g Cape Style Homes 1. Identifying Weatherization Opportunities and Challenges in a Cape. 2. Using Mass Save to make these homes more energy efficient!

Green needham nsl weatherization capes

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Green Needham / Next Step Living Weatherization Seminar for owners of Capes

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Weatherizing Cape Style Homes1. Identifying Weatherization

Opportunities and Challenges in a Cape.

2. Using Mass Save to make these homes more energy efficient!

Green Needham CollaborativeSince 2012, Green Needham and Next Step Living have: Signed up 1,089 residents for home

energy assessments Almost 600 scheduled assessments, and

500 were completed in 2012 These assessments resulted in 162

weatherization jobs, which saved homeowners on average $500/year

Mass Save

Cape Style HomeWeatherization Areas To Focus On Attic Cap Knee Wall Area Slopes of the

Upstairs rooms

WEATHERIZATION

A comfortable, safe, and energy-efficient home requiresContinuous thermal boundaries and air barriers that are in contact with one another. (US.DOE)

Typical Cape Attic

1

2

3

4

#1 Kneewall Typically Insulated

with fiberglass or nothing at all

Even though insulation is present, air movement around insulation and thermal breaks

Knee Wall Application Adding Foam

Board (Polyiso) on top of existing insulation

Sealed with spray foam

Insulates and Air Seal

#2 KWL Floor and Transition Typically the KWL

Floor is not insulated

KWL transition extends 2 feet into living space

KWL Floor Application Dense Pack the

Floor and Transition with Blown in Cellulose

Holes are drilled in floor, hose delivers insulation, holes are sealed up

KWL area treatment often improves more than one room: the adjacent bedroom and the living space below!

Attic Cap and Slopes(#3/4) Challenge: Attic Caps

with Low head room, cant insulate properly

Opportunity: Attic spaces with dimensioned "5 - 5 - 5". The slopes can be treated from the KWL area and insulation can be added to the cap without access.

5

55

Attic or Wall Hatches

Thermal Boundary

Air Barrier

An uninsulated attic hatch is a gap in the attic’s thermal boundary.

Ventilation Types Mushroom Vent Roof Vent Ridge vent

Gable Vents Soffit vents

Ventilation Bath fans Improperly

vented will cause moisture problems in attic

Will also recommend adding an insulated ventilation pipe cover. Why?

1sf of ventilation for every 300sf of attic space (not a big problem in capes)

Propavents

Heat Loan Helps Support High Efficiency Heating Systems: Oil

Customers can save 40-50% in heating costs by switching

Single Pane to Double Pane Windows Conversion: Least Cost Effective energy efficiency option, but may be necessary with older homes

Heat Pumps

Why use a Total Climate Control:• CONTROL: Room-by-room heating and cooling in a single

unit

• AIR QUALITY: Filtered air circulation that improves indoor air quality

• SAVINGS: Up to 40% less expensive to heat your home than oil and more efficient cooling than central air or window units

• EASY INSTALL: No duct work or need to remove your current heating system

Ductless mini-split heating and cooling systems are covered by the 0% interest heat loan!

The Total Climate Control System Integrates Into Your Home’s Decor

ENERGY EFFICIENT WINDOWS Replacing single pane

windows is covered under the 0% interest HEAT loan

Questions and CommentsMichael Cucchiara

Community Programs ManagerNext Step Living917-612-9190

[email protected]