The Fastnet System for Roof Protection
- to prevent wind storm damage.
Domestic Applications
It is now a recognised fact that the tiled roofs, prior to the late 1990’s, were seriously under-designed, possibly by as much as 50% in wind load, leading to the conclusion that a large percentage of these roofs are highly vulnerable to wind storm damage.
This is endorsed by the Building Research Establishment who have monitored the effects of storms since 1962 and report that, on average, roofs suffer 65% of all known wind storm damage to buildings.
Testing at the Building Research Establishment 1992
Several tests were carried out in the BRE wind tunnel on a test roof section clad in tiles and fitted with the Fastnet System for Roof Protection. The tests were carried out at various wind speeds up to a maximum of 64 m/sec (144mph) which is equivalent to hurricane force.
No signs of tile movement occurred even at the maximum wind speed.
The tests proved that the fitting of the Fastnet System for Roof Protection would prevent wind storm damage to pitched tile roofs even when subjected to hurricane force winds.
Installation of the Fastnet System for Roof Protection will permanently prevent wind storm damage to domestic property as illustrated by the following examples:
Case History 1 - 1993
Type of Building
A modern domestic bungalow with a pitched roof clad in concrete tiles.
Reason for installation of the Fastnet System
The bungalow is situated in an exposed position, particularly on the western elevation. The occupants reported that the roof of the property had suffered repeated damage due to high winds and that they were afraid of the possibility of injury due to flying debris. The situation had become so serious that the occupants were unable to sleep during storm winds due to the sound of the movement of the tiles and the expectation of further damage.
Installation
The Fastnet System for Roof Protection was fitted to the full area of the roof measuring about 90 sq.m.
Results and Observations
The installation proved completely successful. The occupants reported that no sounds of tile movement occurred after the fitting and that the Fastnet System had given them ‘peace of mind’.
In 2002, some nine years after installation, an inspection of the roof revealed that there had been no further damage and that the Paranet had fully retained it’s shape and tension.
Case History 2 - 2002
Type of Building
A large modern stone-built detached house, L-shaped on plan with a 30° pitched roof clad in concrete tiles.
Reasons for installation of the Fastnet System
The house is situated in an exposed, westerly-facing position and had suffered roof damage due to wind storms. The occupants were so concerned that further storm damage would occur that they had even considered selling the property and moving house. They enquired if the installation of the Fastnet System would ensure that no further storm damage would occur and they were assured that this was the case.
Installation
The Fastnet System was fitted to the full area of the roof measuring approximately 150 sq.m. The installation involved fitting the Paranet to two valleys in the roof and also fitting around a stone chimney stack.
Results and Observations
The occupants reported that no further storm damage had occurred after the fitting of the System, including during the severe storms of 27th October 2002, and that they were extremely pleased with the appearance of the System which proved to be very unobtrusive.