Gap Filler Sealant Foam Round Shape Polyethylene Backer Rod for Road and Building Construction Gap Filling Thickness 20mm Length 3 Meter (White)

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Backer rods are usually round, flexible lengths of foam that are used as a backing in joints or cracks to help control the amount of sealant/caulking used and create a back stop. Many sizes/diameters are available for optimal fitting to the size of the joint being sealed. Besides shape, an important attribute is the variety of foam cell structure types: closed cell, open cell. Its important to understand that cell structure makes a critical difference when it comes to irregular joint application, the desired flexibility in the joint, or sealant being used. Backer rod material is made from polyethylene or polyurethane foam, making it compatible with the common industry joint sealants or caulking Backer Rod Enclosure Material is High Quality Foam Light Weight Long Lengthy Foam Backer Rod. Very helpful for the execution of Construction Works filling cracks in concrete prior For Instance fills cracks, wall joints, frames and foundation, Cracks and Damaged Sides And Bottoms Of windows Doors and Windows. Use as a filler in large gaps before applying caulk Insulates and cushions Packaging Type: Bagged. Twist multiple strands of cord together for extra large gaps Just Apply This Backer ROD In The Cracks Carefully To Fulfill The Unusual Empty Concrete Gaps Of The Walls, Windows, Roads And Other Cements Compositions.