Size : 15mm x 250m
It is inserted into a joint to control sealant depth and create a backstop to allow proper sealant tooling.
Joints requirements normally 2 wide to 1 deep but check with silicone sealant litrature Backer Rod is chemically insert and will resist oil gasoline and most other solvents.
This material will not stain nor adhere to sealant materials and is non-exuding.
Back Rod is an ideal non absorbent compressible backup material inserted into a joint to control sealant depth create a backstop to allow proper sealant wetting of the joint surfaces and yield proper bond breaker between the backup material and the sealant.
It can also be used as a temporary joint seal.
Commonly used in glazing operations window and door applications expansion joints curtain wall joints partitions log construction pavement joints and repairs precast units and copings.
Joint or opening must be clean dry and free of obstructions. Select proper rod diameter and cut to length or use directly from spool.
With a blunt instrument or roller uniformly install rod at the level recommended by the sealant manufacturer specifier or architect involved.
Generally the depth of the joint after the backer rod is installed is one half the width.
Very large and very small joints vary in terms of this depth to width ratio. (do not puncture stretch or overly compress)