Hybrid Solution for Nursing Home
Challenge - Part One
A large nursing home in Central Auckland had thousands of square metres of metal tray roofing with minimal pitch; a few areas of which were in a state of disrepair and leaking. Before a re-roof could take place, there were certain challenges to overcome:
- Budget – insufficient funds for the metal roof to be removed or for carpenters to build a support structure to re-pitch a new one at the three degrees required for metal roofs.
- Practicality – roof removal would require the inconvenient and expensive relocation of the elderly residents, while also requiring shrink-wrapped scaffolding, adding to the cost.
Challenge - Part Two
The buildings have a number of extractor fans, so the fumes from an adhesive system could find their way into a building and affect the patients and staff.
A number of other trades (plumbing and glazing) would be following the roofing project, so there would be a danger of the membrane surface being damaged (the installer’s handy work being undone).
Solution - Part One
Viking Roofspec suggested a Warm Roof overlay. This would provide the following advantages:
- The existing metal tray roof would remain in place so that the building would remain covered and therefore no building inhabitants would need to be relocated;
- The polyiso insulation would provide a flat surface for the membrane to be installed on and render an R-value of R-3.0, making the building more energy-efficient and comfortable for the patients. The insulation would also reinforce the spanning strength of the existing metal roof.
Solution - Part Two
To eliminate the use of potent adhesives, the RhinoBond system was commissioned. This allowed the membrane to be mechanically-fastened without penetrating the membrane.
With plumbers and glazers carrying out their work after membrane installation, Enviroclad APEEL was installed. This meant the roof would not be soiled by these other trades and thus would not require solvent cleaning. After all the trades had left, the APEEL film was easily peeled off, revealing a pristine membrane finish.
Result
The Nursing Home Trust Board members were thrilled with the fact that they ended up with a low-slope roof that was:
- Waterproof;
- Energy-efficient though the Viking Warm Roof which uses Kingspan Polyiso board;
- Solvent-free through the use of the RhinoBond mechanical fastening system;
- Pristinely-finished thanks to the Enviroclad APEEL membrane with its protective film;
- Backed by warranties of substance.And all of the above had been achieved without the expensive and painful process of having to apply for consent and relocate its precious elderly inhabitants respectively.
