b'CumulativeCumulativeCumulative Annual totaltotal energyenergy costtotal CO2 per Zone Building type energy savings cost savingssavings persquare metre square metre2(CAD) (m 2 ) (m )Primary school 8 per cent $245,427 $35.72 110 kg (242 lb)4: Mixed climate areas Retail store 5 per cent $58,328 $23.15 60 kg (132 lb)(e.g. Vancouver) Strip mall 6 per cent $70,970 $33.95 90 kg (198 lb)Small office 4 per cent $11,021 $21.57 20 kg (44 lb)Primary school 10 per cent $395,480 $57.56 170 kg (374 lb)5: Cooler climate zones Retail store 6 per cent $91,924 $39.64 100 kg (220 lb)(e.g. Toronto) Strip mall 7 per cent $114,381 $54.72 150 kg (330 lb)Polyiso boards enable building teams to achieve the desired thermal performance in a multi-layered system with joints staggered. Small office 7 per cent $21,289 $41.67 60 kg (132 lb)Primary school 11 per cent $464,859 $67.66 120 kg (264 lb)low-sloped roofs located in ClimateThe study results reveal that by6: Cold climate areasRetail store 6 per cent $93,327 $40.25 110 kg (242 lb)Zones 4, 5, 6 and 7A, as described inspecifyingincreasinglevelsofroof the National Energy Code of Can- insulation installed above the deck,(e.g. Montreal) Strip mall 8 per cent $130,645 $62.50 170 kg (374 lb)adaforBuildings(NECB)2020.specifiers can help building ownersSmall office 8 per cent $22,891 $44.80 70 kg (154 lb)Within these commercial structures,economicallyreachenergyreduc-the building typologies in focus aretiongoals.WhethertheaimistoPrimary school 10 per cent $475,581 $69.22 210 kg (462 lb)primary schools, retail stores, stripregulatetemperatureandcontrol7A: Very cold climatesRetail store 9 per cent $127,517 $54.99 160 kg (352 lb)malls and small offices. moisture to prevent mould growth This independent analysis indi- (Climate Zone 4), or regulate cold(e.g. Edmonton) Strip mall 11 per cent $176,580 $84.40 250 kg (551 lb)catesenergy-efficientroofreplace- seasonal temperatures and resist heat mentsoncommercialbuildingsloss (Climate Zones 5, 6 and 7A),Small office 11 per cent $32,906 $64.40 120 kg (264 lb)located in Climate Zone 4 (mixedhigh-performinginsulationmateri-climateareassuchasVancouver,als such as polyisocyanurate (polyi- Moreover,polyisopanelsareered system of polyiso boards withmentsoftheNationalBuilding B.C.)cangeneratewhole-buildingso) can help meet performance goalsmanufactured in incremental thick- jointsstaggered.PolyisosprovenCodeofCanada(NBC).Building energy savings of four to eight perand reduce energy consumption bynesses typically ranging from 25 tothermal performance makes it a pop- designerswillfindenergy-efficient centannually.ThoseinClimatefour to 11 per cent annually when115 mm (1 to 4.5 in.), with greaterular choice in residential and com- roof assembly options that meet the Zone5(coolerclimateareassuchroofs are replaced. thicknessoptionsavailablefrommercial applications to insulate roofNBC requirements for interior and as Toronto) stand to save six to 10Polyiso,asarigidfoamboardmanufacturers. The long-term ther- assemblies,aswellaswallsystemsexterior fire exposure, as well as other per cent annually depending on theinsulation,hasoneofthehighestmal resistance value for polyiso in- and below-grade applications. critical performance metrics such as buildingtype.Commercialbuild- thermal resistance (R-value per inchsulation is 1 RSI (R-5.7) for 25-mmWithin roof assemblies that havewind uplift. By specifying code-con-ings in Climate Zone 6 (cold climateor RSI per mm) compared to other(1-in.) boards, and polyiso roof in- been tested and evaluated for fire per-areas such as Montreal) and Climateinsulatingoptions.Asaresult,itsulation boards are typically manu- formance, polyiso can be attached di- gruentlevelsofpolyisoinsulation Zone 7A (very cold climate areas in- provides excellent resistance to heatfactured with a labelled compressiverectly to steel decks, without needingduringroofreplacementretrofits, cluding Edmonton) are positionedtransfer,whichlowersspaceheat- strength of 138 kPa (20 psi) or 172an additional thermal barrier prod- buildingdesignersandspecifiers to generate up to 11 per cent annualing and cooling requirements, andkPa (25 psi). The sheets are easy touct such as gypsum board. In addi- can deliver resilient, energy-efficient energy savings by integrating code- minimizesenergyconsumptiontohandleandlightweight,enablingtion, a wide range of roof assembliesbuildingenvelopesandsimultane-congruentroofinsulationintheirmaintainconsistentandcomfort- building teams to achieve the desiredthat include polyiso insulation haveously reduce carbon emissions and existing building envelopes. able indoor temperatures. thermal performance in a multi-lay- been evaluated to meet the require- operating costs for owners.Serving the roofing industry since 2005 with responsive and dependable service and advice.The Fenn & Fenn Roofing Insurance Program General Liability and Excess Liability Insurance including Hot WorksBusiness Property Insurance Builders Risk, Contractors Equipment & Wrap Up Liability InsuranceAutomobile FleetContractors Pollution Liability InsuranceEasy Certificate of Insurance Programme saves time Contract Surety (Bonding)Exceptional Service and contract risk and insurance adviceFenn & Fenn Construction Practice, a division of Hub International Ontario Ltd.Tel:(905) 836-6066Toll Free:(866) 269-879970 Main Street St. S.Newmarket, ONL3Y 3Y6ORN THE ONLY SOURCE FOR PROFESSIONAL ICI ROOFING CONTRACTORS IN ONTARIO ONTARIO ROOFING NEWSISSUE 2 202421'