Our condensation barrier fits on the inner track of our 4 channel system, this creates an air gap between the outer and inner sheets which reduces the condensation.
This air barrier provides insulation to the inner roof sheet, significantly reducing the temperature difference across the inner skin. Thus the warm damp air in the structure is not touching PVC at the outside air temperature and thus a significant reduction in condensation is achieved.
Where condensation occurs on the underside of the outer sheet, this is caught by the inner sheet and led to an integral gutter at each eave. It is then discharged via a built in down pipe.
The whole system minimising any condensation within the structure. The twin layers of PVC, with their associated air gap, also increases the structures’ insulation. Typically reducing the U value from 5 to 0.65 W/m2 K. This U value is a measure of the heat loss through the barrier, with a lower number being better
Condensations forms when warm damp air within the structure meets a PVC roof sheet which is at the same temperature as the cold outside air.
Fitting a second, inner, PVC skin insulates the warm air from this cold air. This significantly reduces the temperature difference across the inner roof and hence minimises the generation of condensation.
In addition, if condensation forms between the air trapped between the layers and the outer PVC roof, then this is held within the second roof and led to an integral gutter at the eave and drained by downpipe to the ground. The insulation provided by the two layers of PVC and the air gap will also help insulate the tent giving an approximate U value of 2.5W/m2K for the combined roof.
• 2 piece roof section with added gable where required
• Installs from eave to ridge and uses the inside keder track
• Fitted with eave gutter to direct any condensation away
• Compatible with existing aluminium frame structures
• Fits behind decorative linings
• The extra layer of PVC gives an added insulation benefit due to the trapped layer of air