Plastic versus Metal
You will see dented metal “whirlybirds” that no longer turn on a building as you drive past. Enter the great plastic versus metal debate !! All of the early roof whirly vents (commonly referred to as “whirlybirds”) were made of metal. However now most, if not all, suppliers of “whirlybirds” offer a full range of plastic roof mounted wind turbine ventilators. It is because of the significant benefits of plastic versus metal that plastic roof mounted wind turbine ventilators have gained so much popularity.
Wind powered roof turbine ventilators (a whirlybird style ventilator) have been a common sight on industrial, commercial and farm buildings (agriculture) for many years. More recently they have become popular on houses (domestic) and public buildings. The fundamental design has not changed from early designs until now.
Plastic versus Metal – Reasons you would choose a plastic whirly vent wind turbine ventilator
Choose plastic over metal (galvanised or aluminium) because:-
- Price – Plastic RoofWhirlys4Africa are less expensive than any of the metal wind turbine ventilators currently available.
- Durability – The plastic used is heat stabilised and has been UV stabilised for in excess of 10 years (they wont melt in the sun nor will UV affect them) – they don’t rust.
- Sturdier and lighter – They are lighter but sturdier than the metal equivalent which allows them to start up more quickly. Slow start up can result in leaks.
- Beautiful – The quality is exceptional – they are aesthetically very pleasing, and come standard in silver, green, terracotta or black (the colour is in the material so can’t and doesn’t peel off).
- Exceptionally free moving – They starts in a whisper of a breeze because of the 2 x sealed bearings. The bearings make this unit exceptionally free moving and quiet (NO SQUEAKING).
- Damage proof – The plastic is slightly flexible and is unlikely to dent in most hail storms (metal dents really easily).
- Theft “proof” – plastic does not have a scrap value so they are unlikely to be stolen – theft it is a real issue with anything metal.
- Chemical tolerant – this plastic is extremely chemical resistant (ammonia etc) unlike most metals.
The further advantages of choosing a RoofWhirly4Africa product:-
- Quality – customers love the quality of the product
- Very affordable
- Completely serviceable – spares are readily available and inexpensive
- Comprehensive 5 year guarantee (including normal wear and tear)
Plastic versus Metal – Where you would not use a plastic wind turbine ventilator
You would not use a plastic roof mounted wind turbine ventilator on your chimney as this may get too hot.