How to Spray a Roof
Most contractors will do it from a roof ladder, using a conventional knapsack. This is usually fine, but requires moving the ladder often which takes time. The fastest way is to use a telescopic spraying boom connected to an electric pump. The operater can work from the eaves or from a static roof ladder.
TVSP, suppliers of Moss-Go, have selected a kit comprising a telescopic boom with trigger and nozzle, a unit comprising a 100 PSI pump with flow control and a 85 Amp battery sufficient for over two days of spraying. The pump unit and tank stay on the ground. The kit adjusts the pressure to maintain a constant flow at variable heights. The variable flow feature saves on both product and battery.
The Streambox houses a 85 AH battery designed to take full charge/discharge cycles.
The pump has a 100 PSI / 6.9 Bars maximum pressure capacity. The pump controller allows adjustment of the flow at the nozzle. The Streambox will provide a vigorous spray 8 storeys up.
The pressure switch incorporated to the pump stops the motor when the boom trigger is closed.
The spraying time capacity varies with the controller setting. At full pressure/flow the continuous spraying of the fully charged battery is 10 hours. At 2 storey height, the continuous spraying time will increase to approximately 15 hours.
The fibre glass boom stretches to 7 meters and weights 5 kg. The standard quick-fit nozzle has a 40o spray angle. 25o and 10o nozzles are also available. A harness belt lessens the strain on the arms and shoulders of the operator.
The pump controller is set 1 to 100, giving the operator a given flow rate in % of the pump capacity. The pump will maintain the flow when the rise changes.
Cost: This will vary with the precise specification. For a single kit comprising the Streambox, boom and harness belt a budget of £525 is realistic.
