Welcome to the ACRís Frequently Asked Questions (FAQ) page.
Below are links to answers to the most common questions visitors to our Web site have asked about the work of the Committee and itís publications.
If you do not find the answer here, please email your clarification question to us
Please note the primary remit of the ACR is promoting roofwork and roof safety - the Committee only accept questions relating to its work and itís publications. If your question relates to roof or roofwork specifications or products, or site specific /general roofwork and roof safety issues not covered in our publications, you are asked to contact the various constituent Trade Associations who made or install the products - links to their web pages can be found here
Questions about publication dates
Questions about the red book and non fragility
Is there a scientific basis to justify the red book test ?
What factors of safety are built into the test?
I have concerns about a claim of non fragility being made by a supplier?
Does the red book test apply to glass assemblies?
How is the red book test applied to GRP Rooflights?
What is the correct way to reference the Red Book test in publications and manufacturers literature?
A manufacturer says his product is tested to an earlier version of the Red Book are his claims still valid?
Questions about other ACR publications and roofwork issues
When can I move nets during the installation of class C assemblies?
Why does the orange book indicate that hi-visibility tape is inadequate to prevent approach to fragile areas?
Is there a guidance wind speed above which roofing works should stop?
General Questions about this site
What is RSS/XML and how do I get ACR news updates?
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