Backer Rod For Caulking Tub

Before caulking use the md building products 1 2 in.

Backer rod for caulking tub.

While caulk alone can be applied to narrow cracks gaps wider than 1 4 should be filled with foam backer rod first. The backer rod should be larger than the joint and be compressed into it. How to use backer rod caulking material step 1. They can be made of several different.

Backer rods are flexible foam tubes of different densities. Apply it directly onto the sealant to loosen it. Caulk backer rod to help fill gaps and openings in pavement cracks wall joints foundations sidewalks and driveways. 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.

The backer rod will fill up the excess space plus you can control how thick the sealant will be on top of the backer rod filling the joint. The sealant cannot be applied too thick or too thin for it to perform correctly. Use a cloth and water diluted detergent to scrub. Remove old sealant with caulk remover.

Many sizes diameters are available for optimal fitting to the size of the joint being sealed. The backer rod helps cushion and insulate and helps prevent 3 point bonding. Clean all surfaces to you want the caulking material to adhere.