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Home Energy Guide - Techniques, Tactics, and Tips: Ice Dams

Reference

Article describing the causes that form ice dams, as well as solutions for preventing future ice dams on roofs, focusing on air sealing to prevent hot air leakage.

Walls Adjoining Porch Roof

Guide

This guide describes how to install a rigid air barrier to separate the porch attic from the conditioned space.

Pre-Retrofit Assessment of Attics, Ceilings, and Roofs

Information Guide

Information guide describing things to consider in the attic, ceiling, or roof before attempting retrofits of items including HVAC, wiring, or structural systems.

DOE ZERH HIA 2017 Case Study: Thrive Home Builders, Lowry Plan, Denver, CO

Case Study

Case study describing a DOE Zero Energy Ready Home 2017 Housing Innovation Award winner that scored HERS 38 without PV and 4 with PV.

DOE ZERH HIA 2017 Case Study: Thrive Home Builders, Courtyard Rows, Lone Tree, CO

Case Study

Case study describing a DOE Zero Energy Ready Home 2017 Housing Innovation Award winner that scored HERS 41 without PV and 8 with PV.

The thermal boundary for a gable roof can be located at either a) the flat ceiling with a vented attic or b) the roof line for an unvented attic

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A low-sloped shed roof with the thermal boundary located at either a) the flat ceiling with a vented attic or b) the roof line for an unvented attic

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Unvented Attic Insulation

Guide

Guide describing methods for insulating an unvented attic along the roof line.

A 1- and ½-story home with a room located in the attic and the thermal boundary located at either a) the walls and ceiling of the attic room with small vented attic spaces or b) the roof line for an unvented attic

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Construct Roofs and Attics for Ice Dam Prevention

Guide

Guide describing how ice dams form and how roofs can be constructed to prevent them.

Attic Ventilation Fans

Information Guide

Information guide describing the use of attic ventilation fans to mechanically pull outside air through the attic in an attempt to cool the attic, control moisture, and prevent ice dams.