In recent years there have been changes to the British and Irish standards regarding the fixing of Rooftiles, and our Technical by Quinn team receive a number of queries about these standards. Ollie Fay, our resident Rooftiles technical expert explains the requirements in our latest Your Questions Answered video.
The British standard is BS 5534:2014 and the Irish standard is SR 82:2017. These standards are set out as an industry guidance for roof fixing. In the standards you have the fixing method, which covers the nails and clips required for fixing the tiles. Requirements for batten sizes has also changed in recent revisions of the national standards. The standards also cover requirements for mortars and underlays.
The recent changes to the requirements set out in the British and Irish standards are due to the increase in the frequency of extreme weather conditions and to bring us up in line with European standards.
The changes include:
Let’s look in more detail at the new requirements regarding the mechanical fixings.
The perimeter tile is the tile along the eaves, the verge and the ridge line. In the UK the perimeter tile requires 2 fixings, so that’s normally two nails or a clip and a nail. In Ireland the perimeter tile requires one fixing, so either a nail or a clip. Other proprietary systems such as dry verge systems may be included as a fixing in certain situations.
Depending on other factors such as the size of the building and degree of exposure, other rows and courses of tiles adjacent to the perimeter tiles will likely require more onerous fixing requirements compared to that in the remaining area known as the general roof area.
For the general roof area these requirements can vary depending on site location. If the site is in a very exposed area the requirements can increase, so one fixing may become two fixings, and where every second row requires fixed in a standard location, this may be every tile in a severely exposed location.
One of the technical services provided by the Technical by Quinn team is the preparation of a fixing schedule to meet the requirements of the British and Irish standards. To prepare this schedule, the following information is required:
To have a fixing spec prepared, or for any other technical queries, please contact our Technical by Quinn team.
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