Cromar Alpha Chem Polyethylene Foam Sealant Joint Backer Rod 20mm x 350m Roll
MPN X1BACK20
Barcode 5036684022552
AlphaChem sealant backer rod 20mm round non absorbent compressible grey closed cell polyethylene foam backs up windows door frames expansion joints and also acts as bond breaker material.
Insert into a joint to control sealant depth and create a back stop to allow the proper depth of sealant ready for tooling.
Creates the correct depth to width of sealant a very important part of the sealant application process, it creates a flexible joint that is 2 sided not 3.
The correct width to depth of sealant allows for the correct amount of movement in the sealant being used whether its around door frame, window frames, floor or wall expansion joints.
Also has the added benefit of saving money on wasted sealant by far the most expensive side of the job.
3 sided sealant joints will not have the same movement capabilities as a 2 sided joint they will be hard and have little movement and will fail over time.
The normal joint requirement is 2 wide to 1 deep but check with the silicone or sealant literature.
Benefits
Applications
Available Sizes
Choosing the correct size:
Select a backer-rod diameter that is approximately 15 to 25% larger than the width of the joint to give a firm base that does not move when applying the sealant.
Data | |
Brand | Alpha Chem Alphachem |
Manufacturer | Cromar |
Reference Code | X1BACK20 |
Type | Sealant Joint polyethylene backer rod |
Size | 20mm x 350 meters |