Diamond Jumbolon backer rods consist of directly extruded Polyethylene foam of very fine closed cell structure giving best results in vast range of applications. It is supplied in cord form to be used as a back-up material for expansion joint sealants.
►Closed cell structure prevent water absorption.
►Chemical Resistant-inert to most dilute acids and alkalies, resistant to oil and hydrocarbons.
►Deformable-with minimum load transfer.
►Easy to handle- can be cut with knife. Economical in use, can go around corners due to flexibility
►Rot Rroof does not disintegrate and swell
► Structure expansion joints in concrete, brick and blockwalls.
►Bridge decks, airports, general construction projects
►As a back-up support for sealants.
METHOD OF APPLICATION
Pushed in a joint by a blunt tool to avoid damage to the cord. It is recommended to use approximately 25% greater diameter cord than the width of the joint so the cord fits tightly in the joint. This will give a firm backing and a correct width and depth required for sealant.