METAL ROOFS

Pitched metal roof with flat ceiling – CR002

ProctorWrap HTR

DCT PIR (vapour barrier)

 

Download CAD PDF

LocationUnder profiled metal roofing
Material
Sarking Membrane:
ProctorWrap HTR breathable (vapour permeable) membrane with vapour
resistance of not more than 0.26 MNs/g.
Installation:ProctorWrap HTR should be laid directly under metal roofing and above the
insulation to form a continuous membrane over the entire area of the roof,
allowing any water to drain down to the gutters.
Fixing:On low pitched roofs if ProctorWrap HTR is unsupported, laps should be
taped to prevent moisture draining back into the insulation
Thermal Break:Fit [thickness] mm DCT Thermal Break strip min 300kpa
Fixing:Screw fix between thermal break strips and purlin.
Acoustic Insulation:DCT Vento R [Glasswool/polyester] batt (not foil faced)
Safety Mesh:To AS 4389
Total R-Value:[Complete]
Location:Horizontal Ceiling
Insulation:DCT Vento R [Glasswool/polyester] batt
Vapour Barrier:Fix 13mm DCT PIR to underside of frame.
Standard Sizes =25,50,75mm DCT recommend a condensation risk analysis is undertaken to determine if a vapour barrier is required at the ceiling. Foil backed bulk insulation has a high risk of condensation if there is less than 2/3 of the total insulation on the cold side of the foil.
There are a large number of factors that need to be considered in assessing and managing condensation risk. Such factors include the local climate, building use, position, thickness and type of insulation, position and integrity of vapour barriers, and the degree and location of mechanical or passive ventilation both in the roof space and the interior. It is highly recommended that designers undertake a condensation risk analysis. The above is typical for a cold and temperate climate.
With standing seam roofing ensure that a drainage mat is used between the ProctorWrap HTR and the
roofing.

Pitched metal roof with flat ceiling – RR001a

ProctorWrap HT 

DCT Thermalcheck

Download CAD PDF

LocationUnder profiled metal roofing
Material
Sarking Membrane:
ProctorWrap HTR breathable (vapour permeable) membrane with vapour
resistance of not more than 0.26 MNs/g.
Installation:ProctorWrap HT should be laid directly under metal roofing and above the insulation to form a continuous membrane over the entire area of the roof, allowing any water to drain down to the gutters.Fixing on low pitched roofs if ProctorWrap HT is unsupported, laps should be taped to prevent moisture draining back into the insulation
Fixing:Screw fix between thermal break strips and purlin.
Acoustic Insulation:DCT Vento R [Glasswool/polyester] batt (not foil faced)
Safety Mesh:To AS 4389
Total R-Value:[Complete]
Location:Horizontal Ceiling
Insulation:[Glasswool/polyester] batt
Vapour Barrier:Fix DCT Thermal Laminate to underside of frame  [12.7mm Tuff-R + [Size]mm Plasterboard]
There are a large number of factors that need to be considered in assessing and managing condensation risk. Such factors include the local climate, building use, position, thickness and type of insulation, position and integrity of vapour barriers, and the degree and location of mechanical or passive ventilation both in the roof space and the interior. It is highly recommended that designers undertake a condensation risk analysis. With standing seam roofing ensure that a drainage mat is used between the ProctorWrap HT and the roofing.

Metal roof with cathedral celing below rafters – CR004b

ProctorWrap HT 

DCT Thermalcheck

Dow Styrofoam Deckmate

Download CAD PDF

LocationUnder profiled metal roofing
Material
Sarking Membrane:
ProctorWrap HTR breathable (vapour permeable) membrane with vapour
resistance of not more than 0.26 MNs/g.
Installation:ProctorWrap HT should be laid directly under metal roofing and above the insulation to form a continuous membrane over the entire area of the roof, allowing any water to drain down to the gutters.Fixing on low pitched roofs if Proctor Roofshield is unsupported, laps should be taped to prevent moisture draining back into the insulation
Thermal Break:Fit [thickness] mm Dow Deckmate 300 strips fixed to the purlin.
Fixing:Screw fix between thermal break strips and purlin.
Acoustic Insulation:[Glasswool/polyester] batt (not foil faced)
Safety Mesh:To AS 4389
Total R-Value:[Complete]
Location:Ceiling
Insulation:[Glasswool/polyester] batt
Vapour Barrier:Fix  DCT Thermal Laminate to underside of frame [12.7mm Tuff-R + [Size]mm Plasterboard]
Dow Deckmate 300, Width = [Frame width] x Thickness = [0.5 x Blanket Thickness].  Standard Sizes = 25, 50 and 75mm. There are a large number of factors that need to be considered in assessing and managing condensation risk. Such factors include the local climate, building use, position, thickness and type of insulation, position and integrity of vapour barriers, and the degree and location of mechanical or passive ventilation both in the roof space and the interior. It is highly recommended that designers undertake a condensation risk analysis.

With standing seam roofing ensure that a drainage mat is used between the ProctorWrap HT and the roofing.

Metal roof with cathedral ceiling below rafters – CR004a

ProctorWrap HT 

DCT Thermalcheck

LocationUnder profiled metal roofing
Material
Sarking Membrane:
ProctorWrap HTR breathable (vapour permeable) membrane with vapour
resistance of not more than 0.26 MNs/g.
Installation:Lay ProctorWrap HT horizontally across the insulation rafters starting at eaves. Secure in place with battens in accordance with AS/NZS 4200.2. Avoid blockages that would prevent free drainage.Fixing on low pitched roofs if ProctorWrap HT is unsupported, laps should be taped to prevent moisture draining back into the insulation.
Insulation:[Glasswool/polyester] batt (not foil backed)
Vapour Barrier:Fix DCT Thermal Laminate to inside of frame. [12.7mm Dow Tuff-R +[Size]mm Plasterboard]
Dow Deckmate 300, Width = [Frame width] x Thickness = [0.5 x Blanket Thickness].  Standard Sizes = 25, 50 and 75mm. There are a large number of factors that need to be considered in assessing and managing condensation risk. Such factors include the local climate, building use, position, thickness and type of insulation, position and integrity of vapour barriers, and the degree and location of mechanical or passive ventilation both in the roof space and the interior. It is highly recommended that designers undertake a condensation risk analysis.

With standing seam roofing ensure that a drainage mat is used between the ProctorWrap HT and the roofing.

Metal roof with cathedral ceiling below rafters – CR004a

ProctorWrap HT 

DCT Thermalcheck

LocationUnder profiled metal roofing
Material
Sarking Membrane:
ProctorWrap HTR breathable (vapour permeable) membrane with vapour
resistance of not more than 0.26 MNs/g.
Installation:ProctorWrap HT should be laid directly under metal roofing and above the insulation to form a continuous membrane over the entire area of the roof, allowing any water to drain down to the gutters.Fixing on low pitched roofs if ProctorWrap HT is unsupported, laps should be taped to prevent moisture draining back into the insulation
Insulation:[Glasswool/polyester] batt (not foil backed)
Vapour Barrier:Fix  DCT Thermal Laminate to underside of battens [Size]mm Tuff-R + [Size]mm Plasterboard

There are a large number of factors that need to be considered in assessing and managing condensation risk. Such factors include the local climate, building use, position, thickness and type of insulation, position and integrity of vapour barriers, and the degree and location of mechanical or passive ventilation both in the roof space and the interior. It is highly recommended that designers undertake a condensation risk analysis.

With standing seam roofing ensure that a drainage mat is used between the ProctorWrap HT and the roofing.

Metal roof with cathedral ceiling below rafters – RR002a

ProctorWrap HT 

DCT Thermalcheck

Download CAD PDF

Location:Under profiled metal roofing
Material
Sarking Membrane:
ProctorWrap HTR breathable (vapour permeable) membrane with vapour
resistance of not more than 0.26 MNs/g.
Installation:ProctorWrap HT should be laid directly under metal roofing and above the insulation to form a continuous membrane over the entire area of the roof, allowing any water to drain down to the gutters.Fixing on low pitched roofs if ProctorWrap HT is unsupported, laps should be taped to prevent moisture draining back into the insulation
Acoustic Insulation:[Glasswool/polyester] batt (not foil faced)
Safety Mesh:To AS 4389
Total R-Value:[Complete]
Location:Ceiling
Insulation:[Glasswool/polyester] batt
Vapour Barrier:Fix  DCT Thermal Laminate to underside of frame  [12.7mm Tuff-R + [Size]mm Plasterboard]

There are a large number of factors that need to be considered in assessing and managing
condensation risk. Such factors include the local climate, building use, position, thickness and type of
insulation, position and integrity of vapour barriers, and the degree and location of mechanical or passive ventilation both in the roof space and the interior. It is highly recommended that designers undertake a condensation risk analysis.

With standing seam roofing ensure that a drainage mat is used between the ProctorWrap HT and the roofing.

Metal roof with cathedral ceiling below rafters – RR002a

ProctorWrap HTR 

Dow Styrofoam Thermal Break Strips

DCT Thermalcheck

Location:Under profiled metal roofing
Material
Sarking Membrane:
ProctorWrap HTR breathable (vapour permeable) membrane with vapour
resistance of not more than 0.26 MNs/g.
Installation:ProctorWrap HT should be laid directly under metal roofing and above the insulation to form a continuous membrane over the entire area of the roof, allowing any water to drain down to the gutters.
Fixing:If ProctorWrap HT is unsupported, laps should be taped to prevent moisture draining back into the insulation
Thermal Break:Fit [thickness] mm Dow Deckmate 300 strips fixed to the purlin.
Fixing:Screw fix between thermal break strip and purlin.
Acoustic Insulation:[Glasswool/polyester] batt (not foil faced)
Safety Mesh:To AS 4389
Total R-Value:[Complete]
Location:Ceiling
Insulation:[Glasswool/polyester] batt
Vapour Barrier:Fix  DCT Thermal Laminate to underside of frame  [12.7mm Tuff-R + [Size]mm Plasterboard]
Dow Deckmate 300, Width = [Frame width] x Thickness = [0.5 x Blanket Thickness].  Standard Sizes = 25, 50 and 75mm. There are a large number of factors that need to be considered in assessing and managing condensation risk. Such factors include the local climate, building use, position, thickness and type of insulation, position and integrity of vapour barriers, and the degree and location of mechanical or passive ventilation both in the roof space and the interior. It is highly recommended that designers undertake a condensation risk analysis.
With standing seam roofing ensure that a drainage mat is used between the ProctorWrap HT and the roofing.

Low pitched metal roof with plasterboard ceiling above exposed rafters – CR008a

ProctorWrap HTR 

DCT Thermalcheck

Download CAD PDF

LocationUnder profiled metal roofing
Material
Sarking Membrane:
ProctorWrap HTR breathable (vapour permeable) membrane with vapour
resistance of not more than 0.26 MNs/g.
Installation:ProctorWrap HT should be laid directly under metal roofing and above the insulation to form a continuous membrane over the entire area of the roof, allowing any water to drain down to the gutters.
Fixing:If ProctorWrap HT is unsupported, laps should be taped to prevent moisture draining back into the insulation
Acoustic Insulation:[Glasswool/polyester] batt (not foil backed)
Vapour Barrier:Fix  DCT Thermal Laminate to underside of battens [Size]mm Tuff-R + [Size]mm Plasterboard
Standard Sizes =25,50,75mm DCT recommend a condensation risk analysis is undertaken to determine if a vapour barrier is required at the ceiling. Foil backed bulk insulation has a high risk of condensation if there is less than 2/3 of the total insulation on the cold side of the foil.
There are a large number of factors that need to be considered in assessing and managing condensation risk. Such factors include the local climate, building use, position, thickness and type of insulation, position and integrity of vapour barriers, and the degree and location of mechanical or passive ventilation both in the roof space and the interior. It is highly recommended that designers undertake a condensation risk analysis. The above is typical for a cold and temperate climate.
With standing seam roofing ensure that a drainage mat is used between the ProctorWrap HTR and the
roofing.

Low pitched metal roof with plasterboard ceiling – RR007a

ProctorWrap HTR 

DCT Thermalcheck

Download CAD PDF

LocationUnder profiled metal roofing
Material
Sarking Membrane:
ProctorWrap HTR breathable (vapour permeable) membrane with vapour
resistance of not more than 0.26 MNs/g.
Installation:ProctorWrap HT should be laid directly under metal roofing and above the insulation to form a continuous membrane over the entire area of the roof, allowing any water to drain down to the gutters.
Fixing:If ProctorWrap HT is unsupported, laps should be taped to prevent moisture draining back into the insulation
Fixing:Screw fix between thermal break strip and purlin.
Acoustic Insulation:[Glasswool/polyester] batt (not foil faced)
Safety Mesh:To AS 4389
Total R-Value:[Complete]
Location:Ceiling
Insulation:[Glasswool/polyester] batt
Vapour Barrier:Fix  DCT Thermal Laminate to underside of frame  [12.7mm Tuff-R + [Size]mm Plasterboard]
There are a large number of factors that need to be considered in assessing and managing
condensation risk. Such factors include the local climate, building use, position, thickness and type of
insulation, position and integrity of vapour barriers, and the degree and location of mechanical or passive ventilation both in the roof space and the interior. It is highly recommended that designers undertake a condensation risk analysis. With standing seam roofing ensure that a drainage mat is used between the ProctorWrap HT and the roofing.

Low pitched metal roof with suspended ceiling – CR010a

ProctorWrap HTR 

Dow Tuff-R or Dow Thermax LD

Dow Styrofoam Deckmate Thermal Break Strips

Download CAD PDF

LocationUnder profiled metal roofing
Material
Sarking Membrane:
ProctorWrap HTR breathable (vapour permeable) membrane with vapour
resistance of not more than 0.26 MNs/g.
Installation:ProctorWrap HT should be laid directly under metal roofing and above the insulation to form a continuous membrane over the entire area of the roof, allowing any water to drain down to the gutters.
Fixing:If ProctorWrap HT is unsupported, laps should be taped to prevent moisture draining back into the insulation.
Thermal Break:Fit [thickness] mm Dow Deckmate 300 strips fixed to the purlin.
Fixing:Screw fix between thermal break strip and purlin.
Acoustic Insulation:[Glasswool/polyester] batt (not foil faced)
Safety Mesh:To AS 4389
Total R-Value:[Complete]
Location:Horizontal Ceiling
Insulation:[Glasswool/polyester] batt
Vapour Barrier:Fix Dow Tuff-R or Dow Thermax to underside of frame  [12.7mm Tuff-R + [Size]mm Plasterboard]
Dow Deckmate 300, Width = [Frame width] x Thickness = [0.5 x Blanket Thickness].  Standard Sizes = 25, 50 and 75mm. There are a large number of factors that need to be considered in assessing and managing condensation risk. Such factors include the local climate, building use, position, thickness and type of insulation, position and integrity of vapour barriers, and the degree and location of mechanical or passive ventilation both in the roof space and the interior. It is highly recommended that designers undertake a condensation risk analysis.

TILED ROOFS

Pitched tiled roof with flat ceiling – CR001a

ProctorWrap HTR 

DCT Thermalcheck

 

Download CAD PDF

LocationTile, slate and shingle roofs
Material
Sarking Membrane:
ProctorWrap HTR breathable (vapour permeable) membrane or equivalent with vapour resistance of not more than 0.26MNs/g
Installation:Lay horizontally across rafters starting at eaves. Secure in place with battens in accordance with AS/NZS 4200.2 and product user guide. Avoid blockages that would prevent free drainage of moisture.
Total R-Value:[Complete]
Location:Horizontal Ceiling
Insulation:[Glasswool/polyester] batt
Vapour Barrier:Fix DCT Thermal Laminate to inside of frame. [12.7mm Dow Tuff-R + [Size]mm Plasterboard]
DCT recommend a condensation risk analysis is undertaken to determine if a vapour barrier is required at the ceiling. There are a large number of factors that need to be considered in assessing and managing condensation risk. Such factors include the local climate, building use, position, thickness and type of insulation, position and integrity of vapour barriers, and the degree and location of mechanical or passive ventilation both in the roof space and the interior. It is highly recommended that designers undertake a condensation risk analysis.

Pitched tiled roof with cathedral ceiling below rafters – CR003a

ProctorWrap HTR

Dow Tuff-R

Download CAD PDF

LocationTiled roof
Material
Sarking Membrane:
ProctorWrap HTR breathable (vapour permeable) membrane with vapour resistance of not more than 0.26MNs/g
Acoustic Insulation :[Glasswool/polyester] batt (not foil faced)
Installation :Lay horizontally across rafters starting at eaves. Secure in place with battens in accordance with AS/NZS 4200.2 and product user guide. Avoid blockages that would prevent free drainage of moisture.
Total R-Value:[Complete]
Fixing:Screw fix between roof sheet/batten and rafter/purlin.
Vapour Barrier:Fix DCT Thermal Laminate to underside of rafter. [12.7mm Dow Tuff-R + [Size]mm Plasterboard]
DCT recommend a condensation risk analysis is undertaken to determine if a vapour barrier is required at the ceiling. There are a large number of factors that need to be considered in assessing and managing condensation risk. Such factors include the local climate, building use, position, thickness and type of insulation, position and integrity of vapour barriers, and the degree and location of mechanical or passive ventilation both in the roof space and the interior. It is highly recommended that designers undertake a condensation risk analysis.

Pitched tiled roof with cathedral ceiling below rafters – CR003B

 

ProctorWrap HTR

Dow Styrofoam Roofmate

Download CAD PDF

LocationTo tile roof structure
Material
Sarking Membrane:
ProctorWrap HT breathable (vapour permeable) membrane or equivalent with vapour resistance of not more than 0.26MNs/g
InstallationLay horizontally across rafters starting at eaves. Secure in place with battens in accordance with AS/NZS 4200.2 and product user guide. Avoid blockages that would prevent free drainage of moisture.
Thermal Insulation :Dow Styrofoam Roofmate
Total R-Value:[Complete]
Fixing:Screw fix between counter batten and rafter.
InstallationSee manufacturers details in conjunction with finishes.
DCT recommend a condensation risk analysis is undertaken to determine if a vapour barrier is required at the ceiling. Foil backed bulk insulation has a high risk of condensation if there is less than 2/3 of the total insulation on the cold side of the foil.
There are a large number of factors that need to be considered in assessing and managing condensation risk. Such factors include the local climate, building use, position, thickness and type of insulation, position and integrity of vapour barriers, and the degree and location of mechanical or passive ventilation both in the roof space and the interior. It is highly recommended that designers undertake a condensation risk analysis.

Tiled roof with cathedral ceiling above exposed rafters – CR005a

ProctorWrap HT 

DCT Thermalcheck

Download CAD PDF

LocationTo tile roof structure.
Material
Sarking Membrane:
ProctorWrap HT breathable (vapour permeable) membrane  with vapour resistance of not more than 0.26MNs/g
InstallationLay horizontally across rafters starting at eaves. Secure in place with battens in accordance with AS/NZS 4200.2 and product user guide. Avoid blockages that would prevent free drainage of moisture.
Thermal Insulation :Dow Styrofoam Roofmate
Total R-Value:[Complete]
Fixing:Screw fix between counter batten and rafter.
InstallationSee manufacturers details in conjunction with finishes.
There are a large number of factors that need to be considered in assessing and managing condensation risk. Such factors include the local climate, building use, position, thickness and type of insulation, position and integrity of vapour barriers, and the degree and location of mechanical or passive ventilation both in the roof space and the interior. It is highly recommended that designers undertake a condensation risk analysis.

GREEN ROOFS

Greenroof over concrete roof

ProctorWrap IRMA 

ProctorGeo DC8 Plus

DCT GA300

Roofs with insulating membrane protection are also known as IRMA (inverted roof membrane assembly) or PMR (protective membrane roof).

Preparation :Ensure membrane is clean and free of loose material.
Separation layerLay ProctorGeo IRMA and ProctorGeo DC8 Plus
Total R-Value[Complete]
Above Slab R-Value:[Complete]
Insulation:DCT GA300
Final finish[Complete]
Using DCT GA300 above the slab will minimise the risk of condensation below the slab. Care, should be taken in allowing builders to remove insulation above the slab as condensation may result in toxic mould formation.

CONCRETE ROOFS

Flat concrete roof with suspended ceiling – CR013a

ProctorWrap IRMA

Dow Styrofoam RTM-X or Dow Roofmate SL-X

Download CAD PDF

PreparationEnsure membrane is clean and free of loose material.
Installation:Lay insulation boards in brick pattern with square edges pushed together firmly, cut neatly around penetrations and extended up upstands.
Separation layer:Lay ProctorWrap IRMA over insulation with edges lapped 300mm and turned down at upstands and penetrations.
InsulationDow Styrofoam RTM-X or DOW Roofmate SL-X
Total R-Value[Complete]
Above Slab R-Value[Complete]
Roofs with insulating membrane protection are also known as IRMA (inverted roof membrane assembly) or PMR (protective membrane roof).Specify separation layer in the Waterproofing – external and tanking worksection, or delete if not required.
Using Dow Styrofoam RTM-X above the slab will minimise the risk of condensation below the slab. Care, should be taken in allowing builders to remove insulation above the slab as condensation may result in toxic mould formation. [Size] – Determined by required material R-value and k-value. In a ventilated space, the reflective foil values are diminished.

Flat Concrete roof with suspended ceiling – CR012a

ProctorWrap IRMA 

Dow Styrofoam RTM-X

Dow Tuff-R

PreparationEnsure membrane is clean and free of loose material.
Installation:Lay insulation boards in brick pattern with square edges pushed together firmly, cut neatly around penetrations and extended up upstands.
Separation layer:Lay ProctorWrap IRMA over insulation with edges lapped 300mm and turned down at upstands and penetrations.
InsulationDow Styrofoam RTM-X
Total R-Value[Complete]
Above Slab R-Value[Complete]
InsulationDow Tuff-R
Below Slab R-Value[Complete]
Roofs with insulating membrane protection are also known as IRMA (inverted roof membrane assembly) or PMR (protective membrane roof). Specify separation layer in the Waterproofing – external and tanking work section, or delete if not required. Using Dow Styrofoam RTM-X above the slab will minimise the risk of condensation below the slab. Care, should be taken in allowing builders to remove insulation above the slab as condensation may result in toxic mould formation.

[Size] – Determined by required material  R-value and k-value. In a ventilated space, the reflective foil values are diminished.

Pitched tiled roof with cathedral ceiling below rafters – CR003B

 

ProctorWrap IRMA 

Dow Styrofoam RTM-X / SMTG / Roofmate-X

Dow Tuff-R or Dow Thermax LD

Download CAD PDF

LocationTo tile roof structure
Material
Sarking Membrane:
ProctorWrap HT breathable (vapour permeable) membrane or equivalent with vapour resistance of not more than 0.26MNs/g
 Installation:Lay horizontally across rafters starting at eaves. Secure in place with battens in accordance with AS/NZS 4200.2 and product user guide. Avoid blockages that would prevent free drainage of moisture.
Thermal Insulation:Dow Styrofoam Roofmate
Total R-Value[Complete]
FixingScrew fix between counter batten and rafter.
InsulationSee manufacturers details in conjunction with finishes.
DCT recommend a condensation risk analysis is undertaken to determine if a vapour barrier is required at the ceiling. Foil backed bulk insulation has a high risk of condensation if there is less than 2/3 of the total insulation on the cold side of the foil.
There are a large number of factors that need to be considered in assessing and managing condensation risk. Such factors include the local climate, building use, position, thickness and type of insulation, position and integrity of vapour barriers, and the degree and location of mechanical or passive ventilation both in the roof space and the interior. It is highly recommended that designers undertake a condensation risk analysis.