Sure Snap: The only smoke and fire collar
Can I use a collar on any type of pipe and in any application?
You can only use the collar in specific pipe/collar/building element systems that have been tested or assessed and given a fire-rating. Refer to the collar product page and approval charts for a list of all fire-rated system configurations.
Can I push a pipe fitting up inside the collar from the underside to save on head height?
Sure Snap collars have been tested with fittings pushed up inside the collar for a number of pipe types and diameters. Refer to the collar datasheet to determine if the pipe thickness allows for a fitting.
Some pipe types are difficult to close and therefore fittings are not covered by testing or assessment.
What can I use to fill the gap between the collar and the pipe on the top of the slab?
The requirements for filling the gap between the collar and the pipe on the top of the slab vary depending on the size of the gap.
For gaps less than 10mm no backfill is required but if desired you can use Sika Everbuild Everflex LMA 200 Contractors Sealant or Non-shrink General Purpose Construction Grout.
If the gap is between 10mm and 20mm then Sika Everbuild Everflex LMA 200 Contractors Sealant or Non-shrink General Purpose Construction Grout is needed to fill the gap.
If the gap is larger than 20mm then Non-shrink General Purpose Construction Grout must be used to fill the gap.
If a fuse-link (the nylon link holding the springs ends together) breaks, does the collar need to be replaced?
If a fuse-link breaks before the pipe has been installed, the fire collar should be replaced or a new a fuse-link installed on the activated spring. Contact the distributor for a replacement.
If a fuse-link breaks after the pipe has been installed, the fire collar is still compliant and no further action need be taken.
Is it okay to leave acoustic lagging around the collar?
We have tested Sure Snap Cast-in Collars with Thermotec Nuwrap 5 acoustic lagging run right up to the base of the collar (Refer to Test Report FR5670 Specimens 2 & 3), and it had no appreciable impact on the performance of the collar.
Do not, however, tape the lagging to the ceiling and so cover the collar completely.
Is it okay to get concrete in the spring pockets?
There should never be any concrete in the spring pockets. If any has leaked in during installation it may interfere with the ability of the collar to activate in the event of a fire, leaving the collar non-compliant.
The collar should always be installed with the locator plate as it is designed to prevent the ingress of concrete into cast-in collars during a slab pour.
If a small amount of concrete does enter the spring pockets, in most cases it can be flicked out with a screwdriver after the formwork has been removed.
Can the fire collar be altered in any way?
The collar cannot be altered in any way other than as prescribed by the installation instructions.
Under no circumstances should you remove any of the dark grey ‘intumescent’ liner from the collar or any other component.