Install Backer Rod

1:36

4:33

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Repairing Large Cracks: Using Backer Rod & Big Stretch Caulking

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What happens here

Take the chosen backer rod and insert it into the woodpecker hole. The backer rod should be pushed in far enough to create a shallow, uniform channel for the sealant, ensuring that the sealant can adhere to the two opposing surfaces of the gap, rather than all three (which can lead to failure due to limited flexibility). The backer rod can be cut to length with a knife or torn by hand if it's the flexible type.

Goal: Fill the void in the hole to prepare for sealant application

Tools and materials

Knife — Cutting backer rod to length
Sashco Hybrid Backer Rod Sashco — Filling voids

What they say

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using um sash Go's Big Stretch right here Big Stretch bonds extremely well has a lot of flex has a lot of stretch so I'm going to show you exactly how I do this I'm just going to take this backer rod this is once again extremely important step to actually you know stuff this backer rod in there you can cut it with a knife just take and rip it with your hands it rips pretty easily so I'm going to stuff this back of Rod down in there far enough now that I can get just a nice bead of sealant over the top of that this smaller hole um probably could get away with almost no backer rod but it would be better just throw some back rod in there so once again this is a hybrid backer rod that our sealant won't stick to from sashco they got different sizes um they got smaller uh back Rod than this larger back Rod now I'm just going

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