Extreme Cold Climate Home

Thanks/Recognition

● Special thanks to Dr. Joe Lstiburek and Betsy

Pettit AIA, principals of Building Science Corp,

and the DOE Building America Program for the

engineering, architectural drawings and support.

John Woodward , who was our technical advisor on the project ,Marquam George who helped us with the air tightness testing and he gave us the idea to attach the corners to the house . Phil Kaluzza who helped us with the heating and the HRV unit .

Special Thanks to these guys from HCA Housing Department for all there help

● This project was funded through BIA, and

constructed by Hydaburg Cooperative Assoc.,

Housing Dept.

Extreme Cold Climate Design

The important design changes from conventional

construction are:

● Placement and design of the thermal envelope

and weather barriers

● Energy target selected for a Low-Income

Housing project.

Gable/Thermal View

100 Year Design Lifespan

The purpose of installing the insulation to the exterior

of the structural framing and sheathing is:

● Keep the structural part of the building warm & dry,

substantially increasing durability

● Prevent poor thermal performance due to moisture

damage

● Eliminate thermal bridging

● Provide a continuous insulation layer around the

conditioned space

● Enhance insulation installation quality control

● Prevent condensing surfaces inside of the exterior

sheathing

Energy Efficiency

● This building rates 96% on the AHFC

Home Energy Rating System or a high

5*+.

● Design Heat Loss 9004 Btu/hr

● Estimated Space Heating Cost $200 per

yr

Structural Deck in Progress

Structural Deck Complete

Insulation Deck

Insulation Deck – structural

joists

Insulation Deck (hand saw)

1st layer floor Insulation

2nd layer floor Insulation

Insulation Deck Complete

Layout for Routered Grooves

PEX Layout 8” Centers

Jig for Return

Routering Complete

Site Manufactured 1

Site Manufactured 2

Site Manufactured 3

Main Floor PEX Install

Heat Loops Main Floor

Wire Staples for PEX

Main Floor PEX & Decking

PEX Heat Loops Complete

Screwing Down Floor Decking

Layout is Important

PEX Repair in Bathroom

PEX/Utility Room/Main Floor

Building Exterior Walls

Ext Wall Sheathing

12 ft Walls Complete

Ledger/Fire Blocking

Beam support 2nd Floor

Upstairs Floor Joists

Rafter Jig

Rafter Jig Peak & Gusset

Rafter Jig Heel

Rafters Complete

Rafter Setup

Rafter Installation Complete

Rafter Sheathing

Upstairs Gable View

Drainage Plane

Drainage Plane Complete

Bevel Roof Foam

Roof Insulation & False Rafters

More Roof Layers

Screwing down False rafters

Rafter Tails & Lookouts

False Rafter Detail/Screws

Rafter Tails/Beveled roof Foam

False Rafters Complete

Roof Decking

Sheathing & Tarpaper

Tarpaper Complete

Metal Roofing Installation

Metal Roofing Complete

Bottom Sill Corner Patch

Corner Patch Membrane flashing

Flashing/Bottom Sill & Jamb

Flashing with Corner Patch

Prep For Window Installation

Sill Dam

Jamb Flashing

Head Flap

Membrane Flashing – no face seal

Window Extension Boxes

Jamb Extension

Wall Foam

Sealing Cracks

Wall Insulation Layers

Corner Blocking

Furring Corner Detail

Furring Strips Near Completion

Gable View

Cedar Cladding Preserve 4 sides

Lap Cedar Cladding

More Lap Cedar

Window/Siding Detail

Window Installation Complete

Cedar Cladding Complete

Bock for Primary Heat & DHW

Primary Heat Source/Bock BCS 32

Circulation Pump Taco 007

Upstairs Heat Loops

Upstairs Separate Temp Zone

Vanguard Brass Manifolds

DW & Floor Heat Manifold

Assembly

Floor Heat Manifold & PEX Heat Loops

Fantech HRV - SH 704

Inside View/Small HRV

Domestic Water Plastic Manifolds

One Piece PEX DW

Tub/Plumbing Install on Ext Wall

Conventional Inside Finish

Utility Room

Finishing Up Downstairs

Upstairs

Air-Tightness Testing

Air-Tight House

Finished House

Finished House/Back View

Finished House/Gable