How to Caulk Outside the House

Beginner 10 min 18 steps 3399 views Rating: 5.0/5 Published: 2026-05-08

Caulk where walls meet at an angle.. Caulk around doorways and windows, and under door thresholds .. Caulk around wall lamps and electrical outlets that are mounted into walls.

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Steps

1

Caulk where walls meet at an angle.

Step 1

Caulk where walls meet at an angle.

2

Caulk around doorways and windows, and under door thresholds .

Step 2

Caulk around doorways and windows, and under door thresholds .

3

Caulk around wall lamps and electrical outlets that are mounted into walls.

Step 3

Caulk around wall lamps and electrical outlets that are mounted into walls.

4

Caulk around anything that goes through a wall.

Step 4

Caulk around anything that goes through a wall.

5

Fill cracks in brick, stone, block, and concrete walls.

Step 5

Fill cracks in brick, stone, block, and concrete walls.

6

Seal holes in wall between crawl space and basement.

Step 6

Seal holes in wall between crawl space and basement.

7

Seal the gaps around a dryer hood that is mounted to a plastic window pane.

Step 7

Seal the gaps around a dryer hood that is mounted to a plastic window pane.

8

Apply the caulk or sealant when the surfaces are very dry.

Step 8

Apply the caulk or sealant when the surfaces are very dry.

9

Remove the old caulking.

Step 9

Remove the old caulking.

10

Clean the area before caulking if it is very dirty.

Step 10

Clean the area before caulking if it is very dirty.

11

Push the caulking gun forward to force the caulk or sealant into the gap.

Step 11

Push the caulking gun forward to force the caulk or sealant into the gap.

12

Fill cracks that are too deep with foam backer rods before caulking.

Step 12

Fill cracks that are too deep with foam backer rods before caulking.

13

Nail loose siding to the wall before caulking.

Step 13

Nail loose siding to the wall before caulking.

14

Use sealant instead of caulk where you can.

Step 14

Use sealant instead of caulk where you can.

15

Use silicone or silicone rubber sealant for damp or hot areas.

Step 15

Use silicone or silicone rubber sealant for damp or hot areas.

16

Use polyurethane sealant for strong adhesion to wood, glass, metal, masonry, sto

Step 16

Use polyurethane sealant for strong adhesion to wood, glass, metal, masonry, stone or PVC.

17

Use masonry sealant for brick, stone, concrete and stucco walls.

Step 17

Use masonry sealant for brick, stone, concrete and stucco walls.

18

Use siliconized acrylic latex caulk to match a color.

Step 18

Use siliconized acrylic latex caulk to match a color.

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