DOCSLIB.ORG

Facts About Moisture and Fiber Glass Metal Building Insulation

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Facts About Moisture and Fiber Glass Metal Building Insulation INSULATION FACTS Facts About # Moisture and Fiber Glass 26 Metal Building Insulation Information from NAIMA nlike many other insula- What effect does mois- tion products, fiber glass Q ture have on insulation metal building insulation performance? is often visible to the Uoccupants of the building. Making Moisture from rain, ground sure that roofs and walls do not A water,humidity or other leak, that the product is clean and forms of condensation creates the dry prior to installation, and that potential for several problems in condensation is controlled after metal buildings. First, the pres- installation is critical to the insula- ence of water (or ice) in the insu- tion performance and to the lation seriously degrades the building’s interior aesthetics. thermal performance and can Because of performance require- degrade the effective service life ments, fiber glass metal building of the insulation system. Second, insulations are most frequently water in contact with metals can installed with a facing material contribute to corrosion and laminated to the surfaces that may degrade the service life of the be visible.This facing serves building.Third, collection of several purposes: water can lead to dripping, stain- ing, and other undesirable effects I Provides vapor retarder such as mold, mildew and odors, protection to retard passage of which degrade the building’s water vapor through the insu- intended service. lation to cold surfaces where condensation can occur I Protects the insulation from damage Should wet insulation I Provides light reflectivity Q be replaced? I Provides an aesthetic appearance Yes. When fiber glass metal Fiber glass metal building insu- A building insulation is lation will provide long service exposed to storm waters or flood life and optimum performance damage, the wet insulation should when a few simple precautions be removed and replaced since are followed. The insulation the water may carry with it any should be kept clean and dry number of unknown contaminants. prior to installation and applied Although it is possible for the only to clean and dry surfaces. thermal and acoustical perfor- Care should be taken to protect mance of fiber glass insulation to the insulation from the incursion return if the material is allowed of water during the installation to completely dry out, there is no process. If adequately designed, assurance that the drying method regular inspection and mainte- used will be effective. There is www.naima.org nance of the vapor retarder will also no assurance that the forces protect the integrity of the acting on the wet insulation will system after installation. not result in loss of thickness, or for protection in the winter Materials rated at .02 perms are Facing Perm months when the inside ambient recommended where high Material Rating* air temperature is higher than the humidity interior conditions outside ambient air temperature. exist.Materials whose perm Vinyl 1.0 This is a design parameter ratings are greater than 1.0 are FSK .02 confirmed during installation. not considered to be vapor White Metalized retarders.General perm ratings The insulation must be Polypropylene Scrim Kraft .02 for the facings most commonly 2thick enough to maintain the used on metal building insulation Vinyl/Scrim/Foil .02 facing surface temperature above are shown in the table above. Polypropylene Scrim/Foil .02 the inside ambient air dew point Vinyl/Scrim/ temperature to prevent conden- Metalized Polyester .02 sation.This is a design parameter. References System thickness for condensa- 1. Fungal Contamination of HVAC * Perm ratings can be found in literature tion control may be different Surfaces: The Role of the Dew provided by the individual manufacturers of vapor retarder facings. from the thickness for energy Point in Microbial Amplification, conservation. Jerry J.Tulis, and Wayne R. Thomann; Occupational and that contaminants in the water Seams, joints, damage or punc- Environmental Medicine Division, will not contribute to corrosion, 3tures in the vapor retarder and Duke University Medical Center, mold or mildew growth or odors. penetrations should be sealed to Durham, N.C., 1997 For these reasons, it is best to err retard the passage of water vapor on the side of caution and replace around the insulation.This is 2. Ibid. the insulation. primarily an installation require- Fiber glass metal building insu- ment for good workmanship. lations must pass the mold Ventilation to the outdoors on About NAIMA growth test as specified in ASTM 4the cold side of the insulation NAIMA is the association for North C991: Specification for Flexible will help remove moisture that American manufacturers of fiber Glass Insulation in gets past the facing.This is a glass, rock wool, and slag wool insula- Pre-Engineered Buildings. Clean, design consideration. tion products. Its role is to promote dry fiber glass will not support energy efficiency and environmental 1 mold or fungus. However,once preservation through the use of fiber the insulation – or any product, glass, rock wool, and slag wool insula- for that matter – is exposed to How important is the perm rating of the tion, and to encourage the safe pro- dirt and moisture, the possibility Q duction and use of these materials. for microbial growth (mold or vapor retarder in con- 2 trolling condensation? mildew) exists. For additional information contact: Replacing the wet insulation is recommended to reduce the poten- The rate at which moisture NAIMA tial for indoor environmental quality A or water vapor passes 44 Canal Center Plaza, Suite 310 Alexandria, VA 22314 problems and to regain the energy- through a flat material induced by unit vapor pressure differ- Phone: 703-684-0084 efficiency and acoustical require- Fax: 703-684-0427 ments intended for the building. ence is defined as water vapor www.naima.org permeance. One perm is defined as 1.0 grain of water vapor trans- NAIMA BUILDING INSULATION mitted per hour per square foot What are some installa- COMMITTEE MEMBERS: per 1.0 inches of mercury vapor tion guidelines to protect CertainTeed Corp. Q pressure difference.The lower P.O. Box 860 against condensation? Valley Forge, PA 19482 the perm rating, the more effec- 800-233-8990 tive the retarder in controlling Controlling the condensa- moisture vapor transmission. Johns Manville tion in a metal building P.O. Box 5108 A When choosing a vapor retarder, Denver, CO 80217 depends on several design, instal- remember that the lower the 800-654-3103 lation and maintenance factors. perm rating means the less Knauf Insulation One Knauf Drive The insulation must have vapor water vapor that can pass Shelbyville, IN 46176 1retarder on the “warm-in- through the material. 800-825-4434 winter”side for the more severe Materials with a perm rating Owens Corning operating conditions. For most of 1.0 perms or less are consid- One Owens Corning Parkway buildings, this is the inside surface ered to be vapor retarders. Toledo, OH 43659 800-GET-P Pub. No. MB 306 10/04.
Load more

Recommended publications
  • Deep Energy Retrofits for Buildings a SHARING CITIES PLAYBOOK
    Deep energy retrofits for buildings A SHARING CITIES PLAYBOOK This project has received funding from the European Union’s Horizon 2020 research and innovation 2020 V.1 programme under Grant Agreement No 691895 Click on CONTENTS the buttons to navigate Introduction How to use this through this playbook and introduction What is this playbook? 3 document Who is this guide for? 5 1 Building retrofit: Enhancing energy efficiency 6 The challenge 8 Challenge & Solution Deep energy retrofits - What is it and why is this different to a regular building retrofit? 8 2 How to navigate the challenges of conducting building retrofits- Insights from 16 Sharing Cities Insights 3 What is the value of doing a deep retrofit 19 4 How to implement a deep retrofit 23 Exploring opportunity 24 Audience engagement 29 Benefits Technical design 35 Finance and implementation 38 Monitoring and sharing 42 Implementation Toolkit References 47 Acknowledgements 48 This playbook is produced by Sharing Cities, a major international smart cities project. It addresses some of the most pressing urban challenges cities face today across ten replicable solutions. 2 WHAT IS THIS PLAYBOOK? Introduction How to use this playbook and This guide gives an overview of how Sharing Cities rolled out introduction building retrofit schemes in its three ‘lighthouse cities’ – Lisbon, London and Milan. The aim was to address challenges in each city context and share the experience so other cities can learn from it. Challenge & Solution This playbook will: TOOLS & RESOURCES Help you understand what solutions were tested in the Sharing Cities Insights lighthouse cities and what urban challenges they address.
    [Show full text]
  • Environmental Considerations of Building Insulation National Park Service – Pacific West Region
    Environmental Considerations of Building Insulation National Park Service – Pacific West Region Overview Insulation is a commonly used product in the building industry. The manufacture, use, and disposal of insulation is associated with a number of positive and negative environmental impacts. What follows is a brief overview of “green” insulation, vendors, and an in-depth article from Environmental Building News on the environmental comparisons of insulation materials. • The most significant environmental issue associated with insulation manufacture in recent years has been the use of chlorofluorocarbons (CFCs) as foaming agents. By 1993 virtually all CFCs had been eliminated from insulation manufacture; hydrochlorofluorocarbons (HCFCs) have been substituted in most products. These are significantly better than CFCs, but they still result in some ozone depletion, and they contribute to global warming, and are, therefore, also scheduled for phaseout over the next decade. • All insulation materials reduce pollutant and greenhouse gas emissions by reducing heating and air-conditioning requirements of a building. This benefit almost always outweighs environmental problems associated with certain materials. • Do not substitute a “green” insulation material for a non-green material if doing so will result in lower overall energy performance. Even though the environmental impacts of the insulation material might be lower for the green product, the overall environmental impact of the building would likely be greater by lower insulating values. • Fiber insulation materials (cellulose, fiberglass, mineral wool, cotton) generally have lower environmental impacts associated with their manufacture than foam plastic insulation materials, although they usually do not offer as high per- inch R-values. When insulation thickness is not unduly restricted, specify fiber insulation.
    [Show full text]
  • Technical Performance Overview of Bio-Based Insulation Materials Compared to Expanded Polystyrene
    buildings Article Technical Performance Overview of Bio-Based Insulation Materials Compared to Expanded Polystyrene Cassandra Lafond and Pierre Blanchet * Department of Wood and Forest Sciences, Laval University, Québec, QC G1V0A6, Canada; [email protected] * Correspondence: [email protected] Received: 5 February 2020; Accepted: 22 April 2020; Published: 26 April 2020 Abstract: The energy efficiency of buildings is well documented. However, to improve standards of energy efficiency, the embodied energy of materials included in the envelope is also increasing. Natural fibers like wood and hemp are used to make low environmental impact insulation products. Technical characterizations of five bio-based materials are described and compared to a common, traditional, synthetic-based insulation material, i.e., expanded polystyrene. The study tests the thermal conductivity and the vapor transmission performance, as well as the combustibility of the material. Achieving densities below 60 kg/m3, wood and hemp batt insulation products show thermal conductivity in the same range as expanded polystyrene (0.036 kW/mK). The vapor permeability depends on the geometry of the internal structure of the material. With long fibers are intertwined with interstices, vapor can diffuse and flow through the natural insulation up to three times more than with cellular synthetic (polymer) -based insulation. Having a short ignition times, natural insulation materials are highly combustible. On the other hand, they release a significantly lower amount of smoke and heat during combustion, making them safer than the expanded polystyrene. The behavior of a bio-based building envelopes needs to be assessed to understand the hygrothermal characteristics of these nontraditional materials which are currently being used in building systems.
    [Show full text]
  • Study of Thermal Properties of Lightweight Insulation Made of Flax Straw
    Slovak Journal of Civil Engineering Vol. 26, 2018, No. 2, 9 – 14 DOI: 10.2478/sjce-2018-0008 STUDY OF THERMAL PROPERTIES OF LIGHTWEIGHT INSULATION MADE OF FLAX STRAW Maryna BABENKO1*, Adriana ESTOKOVA2, Mykola SAVYTSKYI1, Stanislav UNČÍK3 Abstract Address The article presents the results of a study of the properties of flax 1 “Prydniprovska State Academy of Civil Engineering and straw as a raw material and as a lightweight, environmental- Architecture” State Higher Education Establishment, Ukraine, ly-friendly insulation made of a two-component mixture of flax Department of Reinforced Concrete and Stone Constructions straw and liquid glass. The flax is considered to be renewable 2 Technical University of Kosice, Slovak Republic and Department and is a 100% natural waste product of the agriculture industry, of Material Engineering/Institute of Environmental Engineering, which may be widely used as sustainable building insulation af- Faculty of Civil Engineering ter light modifications. The ratio mixes of the two-component 3 Slovak University of Technology in Bratislava, Bratislava, Slovak eco-insulation of flax straw and liquid glass (Na2O(SiO2)) have Republic, Department of Material Engineering, Faculty of Civil been developed in terms of sustainability principles such as en- Engineering vironmental friendliness and energy efficiency. We used thermal * Corresponding author: [email protected] analysis to compare flax straw as a raw material, and a complex insulation made of flax straw demonstrated a slower decompo- sition of the composite and shorter peaks, which supports the Key words concept of the transformation of flax straw with liquid glass to in- ● Flax, straw, crease its fire resistance properties.
    [Show full text]
  • Identifying Design Opportunities for Deep Energy Retrofits
    RetroFit Depot Identifying Design Opportunities for Deep Energy Retrofits Available for download at www.RetroFitDepot.org Introducing the Retrofit Depot: Deep Energy Retrofit Guides Several commercial building energy retrofit guides already exist, but none address deep energy retrofits. Rocky Mountain Institute wants the owners, occupants, service providers, and retrofit practitioners1 of our nation’s commercial buildings to be aware of the opportunity in deep energy retrofits. We want them to know the value. We want them to have a solid understanding of the process. We also want to arm them with design recommendations that will help make their deep energy retrofits most effective. Provides comprehensive guidance on BuIlDInG framing and quantifying the value of thE CasE Such is the aim of the RetroFit Depot website. It is an unbiased source of 1 deep energy retrofits. information about deep energy retrofits for commercial buildings. On the website people are able to gain a high level understanding of the value of deep retrofits and the required process to achieve them. For those who would like to learn more, we have created a set of three guides. Lists the key components of the manaGInG deep energy retrofit process that Since you are now reading the Guide to Managing Deep Energy Retrofits, DEEp EnERGy limit or eliminate cost premiums, you are likely motivated to realize the value of deep energy retrofits as 2 REtROfIts enable risk management, and create described on the RetroFit Depot website and the Building the Case guide. maximum value. This guide will help you understand the key action items for a deep energy retrofit.
    [Show full text]
  • Energy Efficiency: Building Insulation Volume I – Theory & Materials
    PDHonline Course E446 (3 PDH) Energy Efficiency: Building Insulation Volume I – Theory & Materials Instructor: Lee Layton, P.E 2018 PDH Online | PDH Center 5272 Meadow Estates Drive Fairfax, VA 22030-6658 Phone & Fax: 703-988-0088 www.PDHonline.org www.PDHcenter.com An Approved Continuing Education Provider www.PDHcenter.com PDHonline Course E446 www.PDHonline.org Energy Efficiency: Building Insulation Volume I – Theory & Materials Lee Layton, P.E Table of Contents Section Page Introduction ……………………………………….. 3 Chapter 1, How Insulation Works .………….…..... 5 Chapter 2, Types of Insulation …………………..... 9 Chapter 3, Moisture Migration …………………… 27 Chapter 4, Environmental & Regulatory Issues ….. 30 Summary …………………………………………. 33 © Lee Layton. Page 2 of 33 www.PDHcenter.com PDHonline Course E446 www.PDHonline.org Introduction The efficiency of a building envelope, which includes anything that encloses a building such as walls, ceilings, windows, foundations, is a key to improving the energy efficiency of structures. Basically, the envelope is anything that separates the inside of a building from the outside environment. A good energy efficiency program begins with having a building envelope that efficiently minimizes heat loss. Heating and cooling accounts for 50 to 70% of the energy used in an average home. Inadequate insulation and air leakage are leading causes of energy waste in most residential homes. The benefits of a good building envelope include: • Saves money, • Makes the home more comfortable by helping to maintain a uniform temperature throughout the house, and • Makes walls, ceilings, and floors warmer in the winter and cooler in the summer. The amount of energy efficiency improvements depend on several factors: local climate; the size, shape, and construction of the house; the living habits; the type and efficiency of the heating and cooling systems; and the fuel used.
    [Show full text]
  • Deep Energy Retrofits Market in the Greater Boston Area
    DEEP ENERGY RETROFITS MARKET IN THE GREATER BOSTON AREA Commissioned by the Netherlands Enterprise Agency Final Report DEEP ENERGY RETROFITS MARKET IN THE GREATER BOSTON AREA Submitted: 13 October 2020 Prepared for: The Netherlands Innovation Network This report was commissioned by the Netherlands Enterprise Agency RVO. InnovationQuarter served as an advisor on the project. Contents I. Introduction ................................................................................................................................ 3 II. Overview of Policy Drivers ........................................................................................................... 5 III. Economic Opportunity Assessment .............................................................................................. 9 IV. Market Snapshot ....................................................................................................................... 11 V. Actor Profiles ............................................................................................................................. 24 VI. Appendix ................................................................................................................................... 33 2 I. Introduction Cadmus is supporting the Netherlands Innovation Network (NIN) by providing an overview of the deep energy retrofit market in the Greater Boston Area. This report is intended to help Dutch companies in identify strategic opportunities to enter or expand their business opportunities in the Greater
    [Show full text]
  • Unfaced Metal Building Insulation Temperature Limit: 350°F (177°C)
    Unfaced Metal Building Insulation Temperature Limit: 350°F (177°C) Unfaced Metal Building Insulation is a highly resilent flexible blanket with excellent thermal and acoustical properties. Unfaced Metal Building Insulation is supplied in R-Values to meet most energy conversation requirements and in widths to meet most building criteria. It is intended to be laminated on one side with suitable facing. USES Manson Unfaced Metal Building Insulation is used as primary insulation in exterior walls and standing seam roofing systems of pre- engineered metal buildings. It provides thermal, acoustical and condensation control in roofs and sidewalls. AVAILABILITY Manufactured dimensions are listed below. Please check with your Manson Territory Manager to assure information is current. SPECIFICatiON COMPLIANCE PRODUCT FEATURES In Canada: • Over 50% post-consumer recycled glass ASTM C 553 EUCEB • Type I • Type II Surface Burning Characteristics • When tested in accordance with ASTM E 84, NFPA 255 and CAN/ ASTM C 991 ULC S102-M88 • Type I • Does not exceed 25 Flame Spread, 50 Smoke Delvelopped HH-1-558C • Form B, Class 6 Temperature Range (ASTM C 411) • The unfaced blanket will not deteriorate up to 350°F (177°C) CAN/ULC S702-97 • Type I Water Vapor Sorption (ASTM C 1104) • Less than 2% volume • Less than 5% by weight Corrosiveness (ASTM C 665) • Will not accelerate corrosion on steel, copper or aluminum Mold Growth (ASTM C 1338) • No growth Odour Emission (ASTM C 1304) • Absence of any detectable odour CONTRACTOR: Manson Insulation Products Ltd.
    [Show full text]
  • The Path to the High Performance Thermal Building Insulation Materials and Solutions of Tomorrow
    View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by SINTEF Open Accepted for publication in Journal of Building Physics, 2010. The Path to the High Performance Thermal Building Insulation Materials and Solutions of Tomorrow Bjørn Petter Jelle ab*, Arild Gustavsen c and Ruben Baetens d a Department of Materials and Structures, SINTEF Building and Infrastructure, NO-7465 Trondheim, Norway. b Department of Civil and Transport Engineering, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway. c Department of Architectural Design, History and Technology, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway. d Department of Civil Engineering, Catholic University of Leuven (KUL), B-3001 Heverlee, Belgium. * Corresponding author, Phone +47 73 593377, Fax +47 73 593380, [email protected] Keywords: Vacuum Insulation Panel, VIP, Advanced Insulation Material, AIM, Vacuum Insulation Material, VIM, Nano Insulation Material, NIM, Gas Insulation Material, GIM, Dynamic Insulation Material, DIM. ABSTRACT In todays society there is an increased focus on various energy aspects. Buildings constitute a large part of the total energy consumption in the world. In this respect it is important to have the optimum heat balance in buildings. That is, in a cold climate one wants to have as well thermally insulated building envelopes as possible. However, even in cold climates there might often be relatively long periods with overheating in the buildings, e.g. due to solar heat gains and excessive heat loads from miscellaneous indoor activities. In warm climates overheating is most often the case, e.g. in office work spaces with large window glass facades and extensive use of electrical equipment.
    [Show full text]
  • Low and Net Zero Energy Buildings with EPS Insulation
    Low and net zero energy buildings with EPS Insulation EPS: expanding into a sustainable future What is EUMEPS? Founded in 1989, the European Manufacturers of Objectives: Expanded Polystyrene (EUMEPS) is an association 1. Successful co-ordination of the EPS industry which supports and promotes the European EPS 2. Generate credibility, trust and relationships within industry through National Associations. It is divided the broader construction industry and influencers into two interest groups, reflecting the main applica- to this industry tions for Expanded PolyStyrene (EPS): Packaging and 3. Be the knowledge center for the production and Building & Construction. application of EPS Membership of EUMEPS is open to the National 4. Be the proactive voice of the EPS industry in Europe Associations, raw material producers and multina- and establish positions in key areas (e.g. Insulation tional converters of EPS. performance, Energy Efficiency, Fire performance, Sustainability, HSE-issues) so that the industry can speak as one EUMEPS Building & Construction Group 5. Active representation of the interests of EPS con- The common interest between members is a belief verters and producers at the European level that EPS is the most cost effective insulation material 6. Active support of the interests of EPS converters for building and construction. EPS comprises about and producers at the national level 35 per cent of the total thermal insulation market in 7. Advocate EPS in the key areas, proving to the mar- Europe with over 55,000 people employed in the EPS ket that our facts are correct and that EPS offers industry. EUMEPS membership represents over 90% undisputed advantages.
    [Show full text]
  • The Impact on Global Climate Change by the North American Insulation Manufacturers Association (NAIMA)
    Energy Efficiency Through Insulation: The Impact on Global Climate Change by The North American Insulation Manufacturers Association (NAIMA) Presented at The Second Conference of the Parties to the Climate Convention, Geneva, Switzerland July 1996 Introduction In recent years, the international community has joined together in recognition of the growing threat from global climate change. Under the 1992 international treaty, developed countries are required to scale back their greenhouse gas emissions to 1990 levels by the year 2000. Under the auspices of the United Nations Framework Convention on Climate Change (FCCC)1, the parties are charged with designing a plan for significantly reducing carbon dioxide emissions in the post-2000 time period. In fact, as stated in Article 2, the ultimate objective of the FCCC is "...stabilization of greenhouse gas concentrations in the atmosphere at a level that would prevent dangerous anthropogenic interference with the climate system." "Greenhouse gases" such as carbon dioxide, methane and nitrous oxide exist naturally in the atmosphere, but also are released in great quantities as a result of human activities. Scientists predict that, given current trends of increasing emissions of most greenhouse gases, atmospheric concentrations are expected to increase through the next century and beyond. According to a summary report by the Intergovernmental Panel on Climate Change (IPCC) Second Assessment Synthesis of Scientific-Technical Information Relevant to Interpreting Article 2 of the U.N. FCCC (1995)2,
    [Show full text]
  • Building Insulation Basics
    PDHonline Course G183 (4 PDH) Building Insulation Basics Instructor: Helen Chen, Ph.D., PE, LEED AP 2012 PDH Online | PDH Center 5272 Meadow Estates Drive Fairfax, VA 22030-6658 Phone: 703-988-0088 www.PDHonline.com www.PDHcenter.org An Approved Continuing Education Provider www.PDHonline.com PDH Course G183 www.PDHcenter.org DOE/CE-0180, 2011 Department of Energy Assistant Secretary Energy Efficiency and Renewable Energy Contents Introduction Adding Insulation to an Existing House Why Insulate Your House? Where and How Much How Insulation Works How Much Insulation Do I Already Have? Which Kind of Insulation is Best? Air Sealing What Is an R-Value? Moisture Control and Ventilation Reading the Label Insulation Installation, the Retrofit Insulation Product Types Challenge o Precautions Insulating a New House o Attics Where and How Much o Walls Air Sealing o Basement Walls Moisture Control and Ventilation o Floors and Crawlspaces Installation Issues o Precautions Resources and Links o Attics o Walls Appendix – Related Technology Fact Design Options Sheets o Crawlspaces and Slabs Ceiling and Attics o Advanced Wall Framing Attics Access o Metal Framing Wall Insulation o Insulating Concrete Forms Basement Insulation o Massive Walls Crawlspace Insulation o Structural Insulated Panels Slab Insulation o External Insulation Finish System Air Sealing o Attic Ventilation or a Cathedralized Attic Whole-House Ventilation Systems Page 1 of 32 www.PDHonline.com PDH Course G183 www.PDHcenter.org Introduction Why Insulate Your House? Heating and cooling account for 50 to 70% of the energy used in the average American home. Inadequate insulation and air leakage are leading causes of energy waste in most homes.
    [Show full text]