Safety

The test and classification for non-fragility is detailed in a the ACR[M]001 ‘Red Book’. Broadly speaking, the highest classification for most roof assemblies will be Class B. It is a classification for the whole roof assembly irrespective of the presence of a rooflight, so a

No. There are different options of weights and types of rooflight available that will all be safe, but if the roof might already be fragile, especially in the case of fibre cement sheeting, the classification of the rooflight can be regarded as no better or

For over 20 years now rooflights supplied by members of the National Association of Rooflight Manufacturers (NARM) have been designed and tested for long periods of non-fragility, subject to specification, but many other factors can impact on this. It is often likely to be the

There may be in some cases where roof access is not limited to those properly trained and knowledgeable about roofs, but generally not. These systems can significantly reduce that very important free resource of daylight and make effective cleaning difficult or impossible.