2 Dow Chemical is a Registered Provider with The American Institute of Architects Continuing Education Systems. Credit earned on completion of this program will be reported to CES Records for AIA members. Certificates of Completion for non-aia members available on request. This program is registered with the AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product. Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation. Thank you!
4 This presentation is protected by US and International copyright laws. Reproduction, distribution, display and use of the presentation without written permission of the speaker is prohibited. The Dow Chemical Company 2004
5 Understanding the key issues in Proper Wall Design based on Building Science fundamentals. Framing & cavities Understanding Insulation Basic frame wall physics Air infiltration The drainage plane Key problems with frame walls
6 !"#$# Energy Moisture The cost of energy continues to escalate and moisture issues are growing with every failure. Contractors can build or remodel the right way and extract value.
7 % The cost of energy continues to escalate. Energy efficiency is of growing concern. Cost of Energy Energy bill for an average family in the U.S. has increased 25% since Americans spend $131 billion each year on household energy costs. Home heating and cooling payments are the single largest payment for families after the mortgage. Low-income families spend a quarter of their household income on winter heating bills. Over Time
8 #&' Build on our knowledge. The solution is Building Science...
9 $$"#$ Good materials and good workmanship no longer constitute a high quality home we must now understand how homes work. Joseph Lstiburek, P. Eng. Building Science Corporation
10 (' ) " We will cover the following: Framing and cavities. Understanding insulation. Basic frame wall physics. Air infiltration. The drainage plane. Key problems with frame walls.
11 (' # Wood Framing The framing creates the structure of the house. Cavities are a byproduct of the structure. Cavity Insulation
12 $$# What is Insulation? Is it... A. The glass fibers in fiberglass insulation. B. The paper fibers in cellulose insulation. C. The plastic resin in rigid foam insulation. D. All of the above. E. The trapped air in any carrier material.
13 $$# Insulation is basically air. Carrier materials create compartments to trap air. Generally, the more compartments of air across the same span, the greater the thermal resistance. If insulation is compressed, its R-value is reduced. If moisture takes over the compartments of air, its R-value is reduced. If the air is forced to move from air infiltration or convection, then the insulation is less efficient.
14 $$# R-values of various products: 6 R-Value (per inch) Wood studs OSB Gypsum Wet spray cellulose Fiber glass XPS rigid foam ISO rigid foam
15 "(' ) & Warm migrates toward cold. When heating, warm indoor air migrates toward a cold exterior. When cooling, warm exterior air migrates toward an air conditioned interior. More moisture moves toward less moisture. Nature tries to equalize. Warmer air holds more moisture while cooler air is drier. The vapor drive will typically be from warmer moisture toward cooler drier.
16 % Causes of air infiltration: Penetrations (gaps/cracks) in the home envelope. Can be direct to conditioned air space or into insulation cavities. Impact of air infiltration: Significant energy loss. Reduces efficiency of cavity insulation by forcing air movement. Causes greatest transfer of moisture vapor (versus diffusion).
17 % Common air infiltration materials. #15 felt (asphalt-impregnated building paper) Housewraps Insulated sheathing Extruded polystyrene foam insulation Polyisocyanurate foam insulation
18 & The drainage plane is The exterior water barrier for your wall. Exterior finishes such as siding and brick are known as the primary weather barrier, but you should know they all leak. The primary causes of water penetrating behind siding and brick are: Wind-driven rain Dew point condensation
20 (' ) # Key problems with wood frame walls today: Thermal bridging through wood framing. Factors limiting the use of cavity insulation. Wood framing (more than 16 centers) Plumbing Heating and cooling ductwork Electrical wiring, outlets and junctions Wall cavity convection currents. Dew-point condensation.
21 ' "$* #$ What is Thermal Bridging? Energy loss through wood framing.
22 ' "$* #$ Wood framing is not a good insulator. Heated and cooled air is bridged through uninsulated wood framing.
23 ' "$* #$ Note the surface area of the wood without additional framing for windows and doors.
24 ' "$* #$ Remove the wood framing and ask... Is this wall insulated?
25 ' "$* #$ Now it is! A layer of insulated sheathing covers the entire opaque wall, including the framing.
26 ' "$* #$ 55% of heat loss in typical homes comes from air infiltration (38%) and wood frame walls (17%). Without insulated sheathing, a quarter of your walls are not insulated! of the Surface Area is Wood! On a square house, it s the equivalent of one whole wall!
27 ' "$* #$ Thermal bridging is significant in both heating and cooling climates. Heated outside air Heated inside air If you re heating in the winter or cooling in the summer, stud loss means energy loss. Wood Stud
28 ' "$* #$ Insulated sheathings cover everything, including the wood framing. Insulated sheathing will enhance the efficiency of the entire wall system. Heated outside air Heated inside air Wood Stud
29 (' ) # Key problems with wood frame walls today: Thermal bridging through wood framing. Factors limiting the use of cavity insulation. Wood framing (more than you think) Plumbing Heating and cooling ductwork Electrical wiring, outlets and junctions Wall cavity convection currents. Dew-point condensation.
30 # ' $ Heating and cooling loss occurs on outside walls anywhere cavity insulation doesn t cover. Window Oriented Interior Plumbing Stud Jack Heating/cooling Electrical Buck Warm Cripplers Actual Air Exterior Cold Cavity Wood barrier loss studs outside support inside studs heating insulation gypsum vapor frame siding strand to junction vent (housewrap) to support retarder for pipe & board supply 16 header cooling wall & centers wiring window partition header (OSB) duct losses! sill
31 # ' $ Structural requirements often times completely restrict the use of cavity insulation. Here it is! None here... None here... No cavity insulation here...
32 # ' $ Worse yet, there are open pockets created by structural designs that typically don t get filled. Note pieshaped gap! Top View of 45º corner
33 # ' $ Insulated sheathings are the first line of thermal defense and the only consistent layer of thermal protection for a home.
35 # ' $ Wood framing occurs far more than every 16 or 24 inches on center. Everywhere there s wood framing, there can t be cavity insulation. Note additional wood framing beyond 16 centers.
36 # ' $ Plumbing on the exterior walls further limits the use and effectiveness of cavity insulation. How efficient will the cavity insulation be in these areas?
37 # ' $ HVAC ductwork on the perimeter wall also limits the use of cavity insulation. Note poor installation of cavity insulation.
38 # ' $ HVAC ductwork on the perimeter wall also limits the use of cavity insulation. Top view of this area shows deficiencies.
39 # ' $ Heating and cooling losses are more dramatic because supply ducts contain conditioned air. HVAC Supply Duct Little or no thermal protection between supply duct and outside of wall. When cooling the interior, this could cause moisture problems.
40 # ' $ Insulated sheathings span the entire wall surface to provide a wall s only consistent thickness of thermal protection. HVAC Supply Duct
41 # ' $ The only consistent thing about batt insulation is the inconsistent installation.
42 # ' $ The only consistent thing about batt insulation is the inconsistent installation. Note the gaps and compressions even on standard cavity widths.
43 R-7 R-4 R-11 # R-8 ' $ Insulated sheathings enhance the cavity insulation and makes it work better. R-2 R-6 R-9 R-17 R-7 R-12 R-14 R-10 R-19 Batt R-5 Dow R-5 R-5 R-5 R-5
44 # ' $ Even wet spray cellulose can t insulate the wood framing and it s also limited by electrical, plumbing and HVAC ducts.
45 # ' $ Though wet spray cellulose can provide a better fill, gaps and voids still occur.
46 # ' $ Insulated sheathings span the entire wall surface to provide the only consistent thickness of thermal protection.
47 # ' $ Wood studs occur far more than every 16. Header Window sill Red outlines are 16 centers Heating/cooling supply duct Plumbing vent pipe Jack stud - header support Buck - interior wall support Crippler - sill support Electrical box and wiring
48 # ' $ Is this wall insulated? Window The yellow areas show how little of the opaque wall is covered by cavity insulation.
49 # ' $ Window A layer of Insulated sheathing covers the entire opaque wall area, insulating wood framing and areas not covered by the cavity insulation.
50 (' ) # Key problems with wood frame walls today: Thermal bridging through wood framing. Factors limiting the use of cavity insulation. Wood framing (more than 16 centers) Plumbing Heating and cooling ductwork Electrical wiring, outlets and junctions Wall cavity convection currents. Dew-point condensation.
51 ) Warm Side Cold Side What is cavity convection? Energy loss through movement or looping of heated and cooled air.
52 ) Air movement in the cavity reduces insulation efficiency, contributing to energy loss. Warm Side Air near the inside wall is heated and rises. Cold Side Air near the outside wall is cooled and falls. Cold Side Air near the inside wall is cooled and falls. Warm Side Air near the outside wall is heated and rises. Cold climate Hot climate Trapped air (insulation) becomes less efficient with movement.
53 ) Insulated sheathings will warm-up the exterior side of the cavity and improve the thermal efficiency of the entire wall. In a warm or cold climate, insulated sheathings moderate the cavity temperature and reduce convection currents, making the cavity insulation more effective.
54 (' ) # Key problems with wood frame walls today: Thermal bridging through wood framing. Factors limiting the use of cavity insulation. Wood framing (more than 16 centers) Plumbing Heating and cooling ductwork Electrical wiring, outlets and junctions Wall cavity convection currents. Dew-point condensation.
55 #&' Moisture is the #1 enemy of most building materials. It only takes a small amount of consistent moisture to lead to: Reduced R-value Deterioration / Rot Mold & mildew
56 +*&$ What is dew-point condensation? The point when water in a gas form (vapor) changes to liquid -- a factor of temperature and humidity.
57 +*&$ A dew-point calculation chart shows all. % Relative Humidity Temperature F Temp + 35% RH = 40 Dew-Point Temp
58 +*&$ A dew-point analysis can show what the wetting potential may be for certain wall systems under specific climate conditions. Dew-Point Theory predicts condensation in a system at any point where the actual and dew-point temperature lines cross.
59 +*&$ Dew-Point Analysis: Winter, 2x4, R-13 batt, 7/16 OSB Temperature (Degrees F) ABC D E F G H Distance From Interior (in Inches) Actual Temp Dew-Point Temp Conditions: Interior Exterior Temperature Humidity A. Interior air film B. Latex paint 2 coat C. Drywall 1/2 inch D. Kraft-facer for batt E. R-13 fiberglass batt F. OSB 7/16 inch G. Vinyl siding H. Outside air film NOTICE: This calculation is based on the theory of water vapor migration presented in the ASHRAE 93 Fundamentals *Trademark Handbood. of The Actual Dow performance Chemical Company may vary depending upon air infiltration, workmanship and building materials. Since the A information business unit is of provided The Dow without Chemical charge, Company The and Dow its subsidiaries Chemical Company assume no obligation or liability for its use.
60 +*&$ Dew-Point Analysis: Winter, 2x4, R-13 batt, 3/4 DURAMATE Plus Temperature (Degrees F) ABC D E F G H Distance From Interior (in Inches) Actual Temp Dew-Point Temp Conditions: Interior Exterior Temperature Humidity A. Interior air film B. Latex paint 2 coat C. Drywall 1/2 inch D. Kraft-facer for batt E. R-13 fiberglass batt F. DURAMATE Plus G. Vinyl siding H. Outside air film NOTICE: This calculation is based on the theory of water vapor migration presented in the ASHRAE 93 Fundamentals *Trademark Handbood. of The Actual Dow performance Chemical Company may vary depending upon air infiltration, workmanship and building materials. Since the A information business unit is of provided The Dow without Chemical charge, Company The and Dow its subsidiaries Chemical Company assume no obligation or liability for its use.
61 +*&$ If the surface of the can is colder than the dew-point temperature, then water vapor will condense on its surface just as it will in your walls, unless you address it.
62 +*&$ Hot climate Cool Interior Warm Interior Vapor drive outside-in Warm Exterior Cool Exterior Just like on the can, if either surface of the wall is colder than the dew-point temp, vapor in the wall will condense into liquid water. Vapor drive inside-out Cold climate
63 +*&$ Condensation forms in very small droplets. Pressure differences, surface tension and capillary forces cause water droplets to be absorbed into wood sheathing, studs and cavity insulation. But if you warm up the surface, you don t allow the vapor to condense into water droplets.
64 +*&$ Empty part of the can. No condensation. Why? See the line? Warm the cavity of the can above the dew-point temp and eliminate the condensation.
65 +*&$ Much like a can insulator, a layer of rigid insulation serves to reduce the potential for dew-point condensation.
66 +*&$ An appropriate thickness of insulated sheathing can warm the wall cavity above the dew-point temperature. Let us help you select the right thickness based on dew point analysis. Insulated sheathing moderates the temperature in the cavity to reduce the potential for dew-point condensation.
67 ' ' Moisture issues are growing with every failure. Builders can address energy and moisture issues and extract value with Insulated sheathing.
68 "' Knowing what you now know, why wouldn t you use insulated sheathing to enhance your wall system performance?
69 "' New construction or remodeling The science and benefits are the same.
70 "' Insulated sheathings enhance the performance of the entire wall system. For instance, extruded polystyrene provides an R-value of 5 per inch, but by Insulating the wood framing. Insulating the mechanicals in the cavities. Insulating the exterior wall to reduce convection currents in the cavity insulation. Insulating the exterior wall to reduce dew point condensation. Insulated sheathing will return more than it offers in pure R value - it makes the whole wall system perform better.
71 "' You can t drink coffee from a Styrofoam cup! Expanded polystyrene foam versus extruded polystyrene and polyisocyanurate foams... There are differences.
72 ,-#. This concludes the American Institute of Architects Continuing Education System Program. Copyright 2002 The Dow Chemical Company All rights reserved
More Bang for Your Buck: Combining Thermal, Air and Water Barrier Linda Jeng, Dow Building Solutions 2014 RESNET Atlanta, Jan. 29, 2014 Actual high: 30 F Actual low: 12 F Effect of polar vortex on Atlanta,
TechNotes A builder s source for construction information December 0 Vapor Retarders: Reducing Moisture Risk in Frame Walls For Low-Rise Residential Buildings Vapor retarders are used primarily in cold
Presented by: Jennifer Doyle, P.E., RRC, LEED AP Moisture Gas: Molecules are spread out "Vapor" suspended in air forms a mixture, present everywhere Liquid: Molecules are closer Rain Condensation Pipes
building science.com 2006 Building Science Press All rights of reproduction in any form reserved. Renovating Your Building America Report - 0309 2003 (revised 2007) Building Science Corporation Abstract:
Low-cost Construction for High-energy Savings Brian J. Wimmer Construction Manager Rochester Area Habitat for Humanity firstname.lastname@example.org Objectives: 1. Control air & moisture in high-performance, low-cost
Moisture Aside from structural concerns, the most important consideration for foundation design is moisture. No client wants a wet basement. No client wants a damp basement. No client wants mold in their
building science.com 2008 Building Science Press All rights of reproduction in any form reserved. Vapor Barriers and Wall Design Research Report - 0410 November-2004 Joseph Lstiburek Abstract: Good design
Increased Thermal Performance with James Hardie AUGUST 2014 Technical Bulletin #2 A Complete Solution With James Hardie Energy efficient home design is increasing in importance and is directly associated
Appendix C: Moisture, Mold and Mildew Molds and mildew are fungi that grow on the surfaces of objects, within pores, and in deteriorated materials. They can cause discoloration and odor problems, deteriorate
C e r t a i n Te e d Air Barrier Installation Instructions for Wood Framing Introduction In addition to performing as an interior vapor retarder, MemBrain may be installed as a continuous, interior air
Vapor Drive and How it Affects Mold Growth in Buildings AIHCE 2006 Chicago, Illinois G. Crawford, CIH M. Cornwell, AIA R. Rottersman, CIH P. Morey, PhD, CIH Boelter & Yates, Inc. Park Ridge, Illinois What
AIR INFILTRATION AND ENERGY EFFICIENCY IN YOUR HOME When you think about the energy efficiency of a home, things like the heating and cooling system and insulation readily come to mind. These are certainly
Air Barriers vs. Vapor Barriers Roger G. Morse AIA, Stephen M. Lattanzio PE Paul Haas CIH, Gordon A. Brandon Brian Crowder Morse Zehnter Associates Rensselaer Technology Park 165 Jordan Road Troy, NY 12180
What s under your roof? Do you want Hot Box or Cool Closed Attic? Smart Choice for Smart Minds! SPRAY FOAM INSULATION WHY SEALECTION 500 It reduces sensible and latent heat loads. It eliminates air infiltration:
F ROM THE F OUNDATION Water Vapor and EIFS by Robert Thomas, Jr. Introduction Exterior Insulation and Finish Systems (EIFS) came to the U.S. from Europe where buildings usually have masonry or concrete
7 th th Annual North American Passive House Conference September 27-30, 2012 Denver CO High Performance Wood Framed Wall Systems for Passive House Design Stanley D. Gatland II CertainTeed Corporation 7
BEST 2 WB 3 4 SIX WAYS FOR CONDENSATION IN BUILDINGS Wagdy Anis, FAIA, LEED ap* Abstract: Six of the ways condensation can occur on cold surfaces in buildings are discussed here. They are: 1. Air Leakage,
STAYFLEX CORROSION CONTROL AND THERMAL INSULATION SYSTEM Installed in Pre-engineered Steel Buildings Provides Lowest Cost Construction Method for CORROSIVE AND WET Environments PREFERRED SOLUTIONS, INC.
T e c h n i c a l n o t e Water Vapor Permeance of Wood Structural Panels and Wood Wall Construction Number J450 February 2009 Controlling against moisture damage in structures depends upon proper system
Mark Bartel, P.E., Technical Director International Beams Page 1 of 8 Fire protection requirement of R503.1, IRC-2012 Here are some solutions to meeting the fire protection requirements of IRC-2012 that
R-H-DI1 INSULATION BATT NR-E-IB1 Avoid Using Batt Insulation With Metal Framing Batt insulation should not be used with metal framing systems. Although it is common to see fiberglass batt insulation installed
Best Practices for Crawl Space Insulation Copyright 2011 Basement Systems Inc. All Rights Reserved Table of Contents I - Introduction II - Step By Step Guide 1 - Providing Adequate Drainage 2 - Controling
Builder s Guide to Continuous Insulation Written by: Peter Baker, P.Eng. Joseph Lstiburek, Ph.D., P.Eng. Builder s Guide to Continuous Insulation Dow Building Solutions 200 Larkin Midland, MI 48674 2014
The Optimum Basement Wall Solutions to the Wet Blanket Basement Problem February 27 th, 2014 1 Adapting to Change! We ve made significant advances in water management. Customers no longer accept that musty
Wise Energy Guide solutions & tips 32 AIR SEALING Is your house leaking money? six Building envelope solutions and simple tips If your home is like most, the greatest amount of heat loss is from air leakage;
AGENDA l Study of Poured-In-Place Concrete Wall Performance in Coastal British Columbia l Types of Concrete Walls l Water Penetration Control Strategies l Focus on Poured In Place Concrete Walls CONTEXT
Moisture Control in Museums Presented by Boggarm S. Setty, P.E. Setty & Associates, Ltd. ASHRAE Winter Meeting, New York, January 2008 Case in Point Hirshhorn Museum,Washington, DC Issues Issues relate
2//11 Dew Point What is Dew Point? Kris Anderson, P.E What is Dew Point? Dew Point What is Dew Point? Dew point is the temperature at which dew starts to form or vapor to condense into a liquid. led Dehumidification
R-Value and Densities Chart Material R-Value Per Inch R-Value Per Unit Inside Air Film 0.68 Air Space between Studs 0.95 Building Pa 0.06 ½ in. Fiberboard Sheathing 1.52 Gypsum Wallboard or Drywall 0.90
DuPont Building Innovations VAPOR PERMEABLE OR IMPERMEABLE BUILDING ENVELOPE MATERIALS, DOES IT MATTER? MARIA SPINU, PHD, DUPONT BUILDING INNOVATIONS W H I T E P A P E R The building envelope (or enclosure)
Avoiding Air Barrier Pitfalls Design & Durability November 2013 Air barriers, when correctly installed, help buildings achieve high levels of energy efficiency by decreasing heat loss. For example, great
Advanced Renewable Energy 201 Net Zero Energy Homes The next big trend in green building INSULATION 101 INSULATION OF A NET ZERO ENERGY HOMES BY ECO ESTATES This paper summarizes spray foam wall construction
Building Enclosure Design and Best Practices for Wood-Framed Buildings COLIN SHANE M.ENG., P.ENG. ASSOCIATE, SENIOR PROJECT ENGINEER RDH BUILDING SCIENCES INC. MARCH 4, 2015 Disclaimer: This presentation
Cool Roofs Cause Condensation Fact or Fiction? by Phil Dregger, PE, RRC, Technical Roof Services, Inc. (Editor s Note: Phil Dregger is a professional engineer, registered roof consultant, author, and fellow
Special Applications and Building Type. Special precautions are required for buildings with high indoor humidities or spaces with sensitive electronic equipment or artifacts. These include swimming pools,
Underwriters Laboratories Testing Information R-8078 Underwriters Laboratories Inc. R-13173 Classified Spray Fiber Surface burning characteristics applied to inorganic reinforced cement board with a maximum
CONDENSATION IN REFRIDGERATED BUILDINGS By: Steve Salisbury Nov. 10, 2010 (revised Nov. 14, 2013) Introduction The following discussion reviews the basic causes of condensation in refrigerated buildings
Fast, Low-Cost Ways to Save Energy SEAL AND INSULATE EXISTING HOMES Improving a home s energy efficiency may sound complicated, but take our advice: Start easy, work fast and save now! It s so easy. Just
The Implications of Drying Gypsum Plaster in Walls with Vapour Retardant Paint Joel Schwartz P.Eng., FEC, BEP 1, Stephen Cork, BA 2 1 JRS Engineering Ltd., Burnaby, Canada. email@example.com 2 JRS
Waterproofing and interior insulation for basements takes new twist in technology. Free report reveals how to stop all call backs for basements for the life of the structure by installing these 3 low cost
Open-cell spray foam & what every contractor should know Overview Open-cell or Closed-cell? The age old question that many stumped - from industry bloggers to homeowners - is whether to choose opencell
ROOFS, SNOW AND ICE DAMS The Problem Ice dams are a common roof performance problem in cold climate buildings. Simply put, they are ridges of ice and icicles caused by melt water from further up the roof
FOAMULAR Extruded Polystyrene Insulation Owens Corning manufactures a complete line of FOAMULAR extruded polystyrene insulation (XPS) products for use in residential and commercial construction. The primary
Spray Foam Guide enclosure details using open-cell 0.5 pcf and closed-cell 2.0 pcf polyurethane spray foam in DOE climate zones 1-8 John Straube, Ph.D., P.Eng. Jonathan Smegal Alex Lukachko 2011 Building
Field Performance of Different Interior Basement Insulation Systems Marc Zuluaga Robb Aldrich Dianne Griffiths, P.E. Associate Member ASHRAE ABSTRACT With the support of the Department of Energy s Building
Energy Efficient Home Construction TABLE OF CONTENTS ENERGY SAVINGS - TWO PLANS... 1 REQUIRED FEATURES CHART... 2 THE ELECTRIC HEAT PUMP... 4 ELECTRIC HEATING COST CHART... 5 AIR SEALING... 6 INSULATION...
Below Grade/Walk Out Wall Designs Paul Ellringer PE, CIH Air Tamarack, Inc. March 2013 Below Grade Wall Designs Outlined in Figure 21 are the preferred ways of insulating below grade walls/ walkout walls.
Insulation Check-Up Housing Fact Sheets Introduction Heating and cooling account for the majority of energy costs in homes throughout the United States. Although current energy prices are relatively low,
Enclosing Timber Frames with Structural Insulated Panels Frank Baker Founder, Riverbend Timber Framing and Insulspan Outline What are SIPs? Structural advantage of SIPs for timber frames Energy performance
Comment Form on Gut Rehabilitation Alternatives Name: Organization: Email: Instructions Submission: Please submit this form to firstname.lastname@example.org by October 10 th, 2012 with the subject line
000768PACBPHW_Flashing Bro 5/23/03 2:52 PM Page 1 For the most current product information, go to www.green-guard.com. Pactiv Building Products believes the information and recommendations herein to be
MOISTURE PERFORManCE STUDY OF TYPICal RESIDEnTIal Wall assemblies Build something great a comparison of cladding materials sponsored by: U.S. Department of Housing and Urban Development U.S. Department
The Pennsylvania Housing Research Center Insulating Basements: Part 3 Basement Wall Systems Builder Brief: BB0710 Brian Wolfgang, PHRC Fellow INTRODUCTION The perception of a basement has changed significantly
Insulating Unvented Attics With Spray Foam Closed-cell polyurethane foam provides the insulation, air barrier, and vapor retarder necessary for an unvented attic assembly by James Morshead As a general
Vapour Diffusion for Residential Construction Canada and Northern USA Brookfield Homes, Niagara, Ontario Vapour Diffusion and Condensation Control in Exterior and Split Insulated Wood-Frame Walls in Canada
Introduction Conduction is the transfer of heat through solid materials. Thermal conductivity is the measure of how fast a material conducts heat. The opposite of conductivity is resistivity, or insulating
September 3, 2009 Ric Boyd, Public Works Director Ketchikan Gateway Borough 344 Front St. Ketchikan, AK 99901 RE: Ketchikan Gateway Borough Gateway Recreation Center Roof Observations and Intrusive Inspections
ROXUL Insulation Products For Residential Thermal Applications Better Best ROXUL Solutions For Residential Thermal Applications. Better Best Better. Best. This thermal guide to ROXUL Insulation s Better
PIMA Technical Bulletin #403 Continuous Insulation Using Polyiso Wall Sheathing What it is, what it does, and why you need it About Polyiso Insulation Polyiso is a rigid foam insulation used in over 70%
Construction Technology Update No. 41 Low-Permeance Materials in Building Envelopes by M.K. Kumaran and J.C. Haysom This Update provides guidance on the use of low-permeance materials towards the outside
Basements are Changing John Straube, Ph.D., P.Eng Basements: New & Retrofit Energy Efficient, Durable, Healthy Increasingly used as living space Not a root /coal cellar anymore! High quality space expected
Alternative techniques From the Saskatchewan Conservation House to the Toller House with some R2000 thrown in along the way Insanity. Continuing to do things the same, and expecting a different outcome
SIPA 2014 An American Institute of Architects (AIA) Continuing Education Program Provider: Structural Insulated Panel Association Designing With Structural Insulated Panels Advanced Credit for this course
PROJECT ENGINEER RESPONSIBILITY: This is a general specification guide, intended to be used by experienced construction professionals, in conjunction with good construction practice and professional judgment.
What You Need to Know About Wet-Spray Cellulose Interest in wet-spray cellulose insulation systems among builders, utility personnel and others has been growing in recent years. Manufacturers claims for
CONDENSATION Elimination of condensation on or within walls and floors is as important as reducing the heat loss through the wall or floor. In addition to the moisture damage caused to buildings by condensation,
INSULATION DEFECTS HOW THEY EFFECT THERMAL PERFORMANCE Charles Cottrell, Vice-President of Technical Services OUTLINE Introduction RESNET insulation grading criteria New grading criteria? Possible defects
District of Houston 250-845-2238 2014 British Columbia Building Code Changes A District of Houston interpretation of the 2014 Building Code Changes for 9.36 & 9.32 The following changes reflect the most
Roof Insulation Building Codes & Energy Efficiency Environment friendly e-library Building Code Driver Buildings consumer almost 50% of all energy. Experts believe that a 30% increase in building efficiency
5.3.3 Thermal Resistance (R-value) Common thermal properties of materials and air spaces are based on steady state tests, which measure the heat that passes from the warm side to the cool side of the test
High R-Value Does Not Always Mean High Performance By Charlie Gohman, Building Science and Efficiency Manager, Energy Office, Arizona Department of Commerce Ever since the energy crisis of the 70s we have
Managing Moisture in Low-Rise Building Enclosures A Prescriptive Guide for Building Professionals on Proper Moisture Management Solutions. www.benjaminobdyke.com INTRODUCTION Increasingly, builders, contractors
Building for the Future Durability Considerations for Energy Efficient Wood Frame Building Enclosure Assemblies Graham Finch, MASc, P.Eng NRC-IRAP & FPInnovations Energy Code Workshop February 29, 2012
Selecting Energy-Efficient Windows E N E R I N F O A D V I S O R S E R I E S Key Points Improving the energy performance of windows is important, since windows are the least insulated surface of most homes.
CONDENSATION IN THE WALLS Home inspectors are not mold inspectors, however they do inspect for defects that can result in mold. Mold grows in wet or damp environments. Defects that result in a wet or damp
Insulation for the Building Envelope ROOF WALL SPECIALTY PRODUCT DESCRIPTION Rmax R-Matte Plus-3 is an energy-efficient thermal insulation board composed of a closed-cell polyisocyanurate (polyiso) foam
Keeping the Heat In 7 Insulating walls 7.1 Blown-in insulation 7.2 Renovating the interior 7.3 Renovating the exterior 7.4 Miscellaneous spaces: attached garages and more 7.5 Additions and new construction
Building Envelope Overview The design of the building envelope involves many considerations Both indoor and outdoor materials must be durable, resistant to vandalism, easy to maintain, and affordable They
Insulation R-Value Comparisons American Ingenuity s component panels for the 22 48 domes contains seven inch thick rigid Expanded Polystyrene (E.P.S.) insulation which has an R value of 28. American Ingenuity
INSULATION FACTS # 32 A Guide To Selecting Fiber Glass Insulation Products For New Home Construction And Remodeling Today builders and homeowners are looking for ways to make homes more energy efficient.
TECHNICAL NOTES on Brick Construction 1850 Centennial Park Drive, Reston, Virginia 20191 www.gobrick.com 703-620-0010 Introduction to Energy Performance of Brick Masonry 4 January 2016 Abstract: Thermal
CLOSED CRAWLSPACES What s In the Crawlspace? Wet Sagging Fiberglass Improper Drainage Have you ever been in your crawlspace? If not, have you ever even opened the door to look inside and see what it looked