what can we afford? sustainability, performance, and roof insulation brought to you by hunter panels...

What Can We Afford?Sustainability, Performance, and Roof Insulation

Brought to you by Hunter Panels

Makers of Polyiso Roof Insulation and CoolVent®

Energy Efficiency, Sustainability, and Roof Insulation 2

Sustainability, Performance, and Roof Insulation

Hunter Panels 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 are 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.

This presentation is protected by US and International copyright laws. Reproduction, distribution, display and use of the presentation without written permission of the publisher is prohibited. Copyright © 2009 Hunter Panels. Program development by SpecGuy.



Learning objectives: Participants will be able to: Explain the difference between First Cost, Building

Operating Cost, and Whole System Cost in relationship to roof insulation selection

Establish design requirements for roof insulation performance based on sustainable design principles and LEED credit criteria

Identify other important performance requirements used to select roof insulation products


What Can We Afford?

It's not a simple question

Our clients expect an answer

The answer may not be what they or we expect


What Can We Afford?

We'd better become cost experts First Cost Building Operating Cost Whole System Cost


What Can We Afford? First Cost

Definition of First Cost Site acquisition Development fees Design services Materials costs Installation costs


What Can We Afford? Building Operating Cost

Definition of Building Operating Cost Owning Operating Heating and cooling Cleaning Maintaining Renewing


What Can We Afford? Whole System Cost

Definition of Whole System Cost Social and political Environmental Infrastructure Military


What Can We Afford? Sustainability


What Can We Afford? Sustainability

Definition of SustainabilitySustainability: Situations where the environmental impacts of present human activities do not reduce the potential for the environment to support future human activities


Environmental impact of our buildings

Buildings are our biggest producers of greenhouse gases 76% of planned coal-based power expansion will go

toward operating buildings Current energy costs and energy codes

do not reflect long term costs We're still building like it's 1970!


First Cost and Roof Insulation Selection

First cost drives the majority of construction industry roof system designs Meet only minimum requirements for manufacturer

warranty Meet only minimum building code requirements Meet only minimum energy code



Contractors advocate first cost decisions Market pressures result in minimally acceptable

systems Contractors resolve owner budgets to get projects

started First Cost may cost owners more …



Architects advocate long term owner and community interest Economic climate now is creating an environmental

imperative Architects can support decisions that look beyond first

cost Owners are forced to consider long term interest



Comparison of first cost roof insulation design choices for foam plastic roof insulation Market conditions? Project conditions? Related construction costs? Relation to HVAC system design? Relation to electrical system design?

Polyisocyanurate (PIR) ?Extruded polystyrene (XPS) ?Expanded polystyrene (EPS) ?Lightweight insulating concrete (LWIC) ?


Operating Cost and Roof Insulation Selection

Life cycle costs affect future facility owners and leasees Energy purchase costs HVAC system maintenance System renewal costs


Whole System Costs and Roof Insulation Selection

Life cycle costs affect future facility owners, leasees, and communities: Building abandonment costs


LEED and Roof Insulation Selection

LEED emphasizes the importance of environmental impact as part of design process Comparison of optimal energy performance to base

energy code-compliant building Restrictions on chemically-undesirable substances Re-usability of materials Use of recycled materials Reduced transportation costs for materials



A reminder when you're reading product literature about sustainability: "Although USGBC does not certify,

promote, or endorse products and services of individual companies, products and services do play a role and can help projects with credit achievement. (Note that products and services do not earn projects points.)"



LEED credits related to roof insulation selection LEED Energy and Atmosphere EA Prerequisite 2:

Minimum Energy Performance•Compliance with ASHRAE 90.1-1999 and local energy

codes

LEED Energy and Atmosphere EA Credit 1: Optimize Energy Performance• Increased roof insulation levels

contribute to optimized energy performance



LEED credits related to roof insulation selection LEED Materials and Resources MR Credit 1:

Building Reuse•Roof insulation from some systems is reusable in

recover and partial tear off applications

LEED Materials and Resources MR Credit 2: Construction Waste Management•Alternatively, reuse of roof insulation may

help achieve future points under recycling portion of this credit



LEED credits related to roof insulation selection LEED Materials and

Resources MR Credit 4: Recycled Content•Certain roof insulation

types from certain manufacturers contain recycled materials



LEED credits related to roof insulation selection LEED Environmental Quality EQ Credit 4:

VOC limits•Roof insulation materials located inboard of the

roofing membrane may affect interior VOC or formaldehyde levels, though these items are not addressed under this credit

LEED Innovation in Design ID Credit 1:•Addresses sustainable design practices not

specifically addressed under existing LEED credits


Life Cycle Cost and Roof Insulation Selection

Life cycle cost analysis (LCA) is an emerging sustainable design best practice Building purchasers and leasees

use LCA in due diligence analysis

Applies to whole building and to individual building systems

Addresses present and future costs LEED 2009 will include LCA

considerations

ASTM E917-05 "Standard Practice for Measuring Life-Cycle Costs of Buildings and Building Systems"


Value Engineering and Roof Insulation Selection

Value Engineering or Value Methodology is a professional discipline applied to functional analysis of choices during the design process

Savings advantages of Value Engineering: From The Whole Building Design Guide



Typical VE analysis related to roof insulation selection includes: Relationship between roof insulation levels and annual

energy costs across life of system Relationship between roof insulation levels and HVAC

system size Relationship between roof insulation thickness and

building perimeter enclosure costs



Typical VE analysis related to roof insulation selection includes Long-term thermal performance Longevity of roofing and roof

insulation Roofing and roof insulation

renewal capability to extend service life Roofing and roof insulation reusability


Roof Insulation Fire Safety Selection Criteria

Building codes address roof insulation fire safety through 4 sets of criteria UL fire resistance rated roof/ceiling assembly (hourly

rating) External fire resistance rating (Class A, B, or C) Internal standard Class 1 FMG 4450/4470 Use of foam plastic insulation



International Building Code (IBC) Section 2603: Foam plastic insulation Must meet external fire-resistance Class A, B, or C Must use approved thermal separation board, or Must be used as part of identical tested

roof covering assembly•Factory Mutual Global (FMG) 4450/4470

•Underwriters Laboratories (UL)1256

•Tests using other assemblies do not meet code requirements



International Building Code (IBC) Section 2603: Polyiso is the only foam plastic insulation approved for

most roof covering assemblies without use of a thermal separation board•Polyiso meets both FMG 4450/4470 and UL 1256 as a

component of most high slope and low slope roofing systems

•Extruded polystyrene does not meet FMG 4450/4470

•Extruded polystyrene does not meet UL 1256 in steep slope or most low slope roofing



Foam plastics vary in their performance when exposed to heat

Service temp

Melting point

Flash point

Polyisocyanurate (PIR) 250 none none

Extruded polystyrene (XPS) 165 167 615

Expanded polystyrene (EPS) 165 175 610


Other Roof Insulation Selection Criteria

Design impact of thickness to long-term R value Reduced fascia, rake, and curb profiles for high slope

roofs Reduced gravel stop, curb, and parapet heights for low-

slope roofs Reduced perimeter nailer thickness Reduced flashing depth Reduced thickness allowance for re-roofing

Inches needed for R-30 insulation

Polyisocyanurate (PIR) 5 inches

Extruded polystyrene (XPS) 6 inches

Expanded polystyrene (EPS) 7 inches


Other Roof Insulation Selection Criteria

Tolerance of roof surface traffic for equipment access


We Can Afford More

The cost savings of going beyond the minimum


We Can Afford More

Breaking even is better than breaking even Whole system costs of energy supply are

not directly passed to building end users Conserving energy relieves social

and political pressures If life cycle cost of energy-saving

improvements is just break even, it's better than break even

We can't afford to not afford thermal performance


We Can Afford Sustainability


For more information

List of resources and websites Polyisocyanurate Insulation Manufacturers Association

(PIMA): www.polyiso.org Department of Energy Building Energy Codes Center:

www.energycodes.gov US Green Building Council (USGBC): www.usgbc.org ASTM International: www.astm.org SAVE International Value Engineering Society:

www.value-eng.org Value Engineering article:

http://en.wikipedia.org/wiki/Value_engineering The Whole Building Design Guide: www.wbdg.org



Learning objectives: Participants are be able to: Explain the difference between First Cost, Operating

Cost, and Whole System Cost in relationship to roof insulation selection

Establish design requirements for roof insulation performance based on sustainable design principles and LEED credit criteria

Identify other important product selection criteria used to select roof insulation products

Questions?

This concludes this AIA/CES education program

What Can We Afford?Sustainability, Performance, and Roof Insulation

Brought to you by Hunter Panels

Makers of Polyiso Roof Insulation and CoolVent®

www.hpanels.com

what can we afford? sustainability, performance, and roof insulation brought to you by hunter panels...

Documents

sustainability slide

roof insulation performance

roof insulation products

energy efficiency

roof insulation hunter

system cost slide

insulation selection

cost building operating