How to Fill a Gap with Latex Caulk

15% Off Selected iFixit Tools<\/a> \u2014 Limited Time<br\/>\nFree Shipping on Domestic Orders $75+<\/p>","createdAt":"2026-06-15T16:37:24.835Z","updatedAt":"2026-06-16T07:34:16.264Z","publishedAt":"2026-06-16T07:34:16.302Z","locale":"en","documentId":"s1gcjvoe15hdc1os0ndw1ggb"}}">

15% Off Selected iFixit Tools — Limited Time
Free Shipping on Domestic Orders $75+

Introduction

This guide will show you how to fill gaps and replace the latex caulk between a wall and a sink (or anywhere in your home that may need recaulking). The new latex caulk material will be added to the gaps using a latex caulk gun.

What you need

Step 1 How to Fill a Gap with Latex Caulk

How to Fill a Gap with Latex Caulk, How to Fill a Gap with Latex Caulk: step 1, image 1 of 3

How to Fill a Gap with Latex Caulk, How to Fill a Gap with Latex Caulk: step 1, image 2 of 3

How to Fill a Gap with Latex Caulk, How to Fill a Gap with Latex Caulk: step 1, image 3 of 3

Clean all surfaces and remove any clutter.

Edit

Ask FixBot

Step 2

How to Fill a Gap with Latex Caulk: step 2, image 3 of 3

Use the latex paint remover spray for the areas that have remaining material along with the gaps. These areas also need to be replaced with new material.

Edit

Ask FixBot

Step 3

How to Fill a Gap with Latex Caulk: step 3, image 3 of 3

Use scissors to cut the head of the caulk tube at a 45 degree angle.
This will help to better fill the gaps.

Edit

Ask FixBot

Step 4

How to Fill a Gap with Latex Caulk: step 4, image 3 of 3

Insert the seal punch into the tip of the latex tube to pierce a hole.

Edit

Ask FixBot

Step 5

How to Fill a Gap with Latex Caulk: step 5, image 3 of 3

Pull back the handle of the caulk gun.
Place the caulk tube inside it.
Twist the metal bar until it is completely inside the caulk tube and the curved handle is on top.

Edit

Ask FixBot

Step 6

How to Fill a Gap with Latex Caulk: step 6, image 3 of 3

Add the latex to the areas you see gaps.
After finishing each side, slide your finger along the caulk to push the material inside the gaps.
Use a wipe to immediately clean the excess from the filled areas.