Getting the Most Out of Getting the Most Out of Your Roof AssetYour Roof Asset

Roof Work OptionsRoof Work Options• Patch and Repair? Patch and Repair? • Maintain?Maintain?• Replace?Replace?

Roof Work OptionsRoof Work Options• Age of roofAge of roof• Type of roofType of roof• Type of insulationType of insulation

– moisture contentmoisture content• Age of BuildingAge of Building• Space usageSpace usage• Needs of building ownerNeeds of building owner

Roof Work OptionsRoof Work Options• Roof showing signs of agingRoof showing signs of aging

– exposed feltsexposed felts– blueberriesblueberries– deteriorated base flashingsdeteriorated base flashings

• Good workmanship during original Good workmanship during original constructionconstruction– not leaking excessivelynot leaking excessively

Roof RestorationRoof RestorationA Low Cost Alternative To A Low Cost Alternative To

ReplacementReplacement

Wet InsulationWet Insulation• Wet Insulation Does Not Insulate Wet Insulation Does Not Insulate

and Can Cause Structural Damage and Can Cause Structural Damage to the Deckto the Deck

• A Non-Destructive Scan of Roof A Non-Destructive Scan of Roof May Be Needed to Locate Wet May Be Needed to Locate Wet AreasAreas

Roof Work OptionsRoof Work Options Restoration / Refurbish Restoration / Refurbish• Identification of weak or defective Identification of weak or defective

elements that require attentionelements that require attention• Infrared Thermal ScanInfrared Thermal Scan• Replacement of wet insulation / Replacement of wet insulation /

membranemembrane• Reinforcement of membrane Reinforcement of membrane

flashingflashing

Roof Work OptionsRoof Work Options Restoration / Refurbish Restoration / Refurbish• Parapet or wall waterproofingParapet or wall waterproofing• Correcting roof drainageCorrecting roof drainage• Repair of membrane defectsRepair of membrane defects

– blistersblisters– ridgesridges– splitssplits

• Re-working and / or re-sealing metal Re-working and / or re-sealing metal counter flashingcounter flashing

Roof Work OptionsRoof Work Options Restoration / Refurbish Restoration / Refurbish• Resaturation of roof membraneResaturation of roof membrane• RegravelingRegraveling

Removal of Wet InsulationRemoval of Wet Insulation

Roof RestorationRoof RestorationInvolves:Involves:• Removal of loose gravel and debrisRemoval of loose gravel and debris

Roof RestorationRoof RestorationClose-up Of Felt / LinesClose-up Of Felt / Lines

Roof RestorationRoof RestorationInvolves:Involves:• Reinforcement and repair of anomaliesReinforcement and repair of anomalies

Roof RestorationRoof RestorationInvolves:Involves:• Reinforcement of perimeter and projection flashingReinforcement of perimeter and projection flashing

Roof RestorationRoof RestorationInvolves:Involves:• Reinforcement of perimeter and projection flashingReinforcement of perimeter and projection flashing

Roof RestorationRoof RestorationInvolves:Involves:• Installation of new waterproofingInstallation of new waterproofing

Roof RestorationRoof RestorationInvolves:Involves:• Installation of new waterproofingInstallation of new waterproofing

Roof RestorationRoof RestorationRestoration CompletedRestoration Completed

Roof Work OptionsRoof Work Options Restoration / Refurbish Restoration / Refurbish• Insulation and most of the felts Insulation and most of the felts

have never seen daylighthave never seen daylight• Almost like newAlmost like new• Original roof installation was goodOriginal roof installation was good

(Please see flipchart)(Please see flipchart)

Roof Work OptionsRoof Work Options Restoration / Refurbish Restoration / Refurbish• Not all roofs are good candidates Not all roofs are good candidates

for roof restorationfor roof restoration• Certain criteria must be metCertain criteria must be met

Roof Work OptionsRoof Work Options Restoration Key Factors Restoration Key Factors

• Insulation conditionInsulation condition• Type and thickness of Type and thickness of

insulationinsulation• # of plies# of plies• Lamination between Lamination between

pliesplies• Amount of top pourAmount of top pour• Condition of feltsCondition of felts

– moisturemoisture– rottingrotting– shrinkingshrinking

• Type of feltsType of felts• Historical - leaksHistorical - leaks• Quantity of anomaliesQuantity of anomalies• AgeAge• Flashing type / conditionFlashing type / condition• Number / type of Number / type of

projectionsprojections• Roof TrafficRoof Traffic• Use of building - R-valueUse of building - R-value

Roof Work OptionsRoof Work Options Restoration Restoration• Typically 1/3 to 1/2 the cost of roof Typically 1/3 to 1/2 the cost of roof

replacementreplacement• ‘‘Good bang for your buck’Good bang for your buck’