Wind Loading, Chemical And Environmental
Attack
Wind Loading
Any panel mounted outside a building will be subject to wind loading.
Panels mounted on walls will not be critically affected by positive wind
pressures which force the sheet against the wall: however, negative or suction
pressures will tend to pull the sheet away from the wall.
In many external applications eg. where panels are edge mounted in frames, they will be subject to wind pressures from both sides. When designing an external application, wind loads should be estimated and provision made for secure means of fixing.
Wind loads can be estimated using BS CP3:Chapter V: Part 2.
Precipitation
All panels in external situations will be subject to precipitation in the form of rain, sleet, snow and hail. Foamalux and Foamalux Ultra do not absorb moisture from precipitation: they will not therefore degrade or deteriorate in the presence of moisture. Hail storms may cause damage through impact of large hail stones on cold panels.
Chemical and Environmental Attack
The base material for Foamalux and Foamalux Ultra, PVC, is highly resistant to attack from chemicals and from pollutants in the atmosphere.
Contact with solvents and wet wood preservatives must be avoided. |
