Upstand with a galvanised steel cover is the core of the machine which is 300 mm high. A colaminated cover can be added to obtain perfect adherence to the PVC membrane.
Upstand for renovations
Metal upstand with a galvanised cover is 150 mm high and can be adapted to any type of existing upstand without any further intervention. These types of domes also allow for changing the initial function of a machine installed on a roof while preserving its original upstand.