Ultra Single Foil

Eco Shield™ Ultra Single Foil has been developed specifically for use under roof tiles and is certified under SANS 1381-4 Class D. The aluminium foil layer will not radiate or emit heat downwards and the product is applied with the aluminium surface facing down towards the interior of the building. The spunbond membrane gives the product substantial strenght and stability.

Eco Shield™ Ultra Single Foil does not have foil on the section of the membrane which acts as the overlap, this reduces the cost of the membrane as the section where the membrane overlaps the layer underneath makes the foil surface ineffective as it needs an airspace to function as an insulator.

Other than insulate the roofspace the membrane will reduce draughts and dust penetration into the roof area. The membrane is also designed to prevent moisture from damp air from condensing on the ceiling boards and other vulnerable points in the building fabric.

Most home loan institutions insist on the use of an under-tile membrane where the roof pitch is less than 26 degrees or more than 45 degrees and in exposed coastal areas as the membrane will prevent strong winds from ripping off roof tiles.

  Data Unit Unit
Eco Shield™ Ultra Single Foil® - SANS 1381-4: Class D Class - D
Form - Roll
Length m 40 m
Width mm 1250 ± 5%
Mass per unit area g/m2 130 ± 10%
Resistance to delamination
  1. Dry at elevated ambient temperatures
  2. Wet at elevated ambient temperatures

-
-

No delamination
No delamination
Shrinkage:
  1. Machine direction
  2. Cross machine direction

%
%

<1.5
<1.5
Emissivity - -
Water vapour permeance:
Reflective surface fire index
g/(s.MN)
Class
<0.002
1
Tensile breaking strength:
  1. Machine direction
  2. Cross machine direction

kN/m
kN/m

>3.5
>3.4
Bursting strength kPa 430
Puncture resistance mJ >1320
Edge tear resistance
  1. Machine direction
  2. Cross machine direction

N
N

>70
>50
System thermal resistance: (m2.K)/W >0.9
Installation Instructions
1) Domestic specifications
One layer of Eco Shield Ultra or Eco Shield Ultra Double Foil over rafters and under battens. Lay Eco Shield longitudinally over the rafters working from the eaves to the ridge and lapped 150 mm at joints.
Special precautions
The foil layer has a poor resistance to acids and alkalis and must not be used in contact with wet concrete or be exposed to a corrosive environment. Unless special precautions are taken, the atmosphere in the roof space can cause corrosion of the foil layer that will directly effect its emissivity and therefore its thermal insulation properties.
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Ultra Single Foil
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Ultra Single Foil