Split, Cracked or Checked deck support posts is common, it’s normal and there isn’t a thing which can be done about it, The thicker the post the more it will crack and the lower the density of the wood the deeper the cracks will go. Wet pressure treated lumber is wet and will crack or check as it dries out. Red Cedar is the second lightest wood next to balsa so of any wood used cedar is the one that will crack the deepest
Cracked or Split Deck Support Posts is Normal | Don’t Worry
- Checking: Small surface cracks, or checks, are a natural part of wood drying and are usually cosmetic. They are not a structural concern and can even be considered desirable because they show that the wood is dry.
- Structural cracks: Deeper splits at the end of the post can weaken the wood.
- Rapid drying: If new decking dries quickly in direct sunlight, the wood can crack due to the rapid evaporation of moisture.
- 4×4 and 4×6 deck rail post will also split like a 6×6 support post
Cracked or Split Deck Post | How Much is to Much?
Checks and splits are common in wooden timbers and dimension lumber. In most instances they are acceptable under the current grading rules for timbers and lumber.
How to Fill Split Deck Support Posts
We recommend Big Stretch Caulk to fill the cracks. Then seal with a solid-color stain.
An outdoor deck serves as an extension of your home, offering a comfortable space to relax and entertain. But like any other part of your home, it requires regular maintenance. One common issue homeowners face is cracks in their outdoor deck posts.
If you’ve noticed that your deck support posts are showing signs of wear and tear, this guide is for you. Learn how to repair those unsightly cracks and ensure your deck remains stable for years to come.
This year large cracks have developed in most of the posts. The cracks are mostly 15 to 20mm in depth, but some run as deep as 50mm. They occur on multiple sides of the posts and tend to run more than half of the height of each post.
How to Repair Cracks in Outdoor Deck Posts Michigan
Choosing the Right Filler
- We recommend exterior caulk – Best to use Big Stretch or Dap Extreme Stretch for deck support posts
- There are various wood fillers available, it’s crucial to choose one specifically designed for outdoor use. Outdoor wood fillers or epoxies are more resistant to weather conditions and can withstand the test of time.
- Seal with a solid color stain or a semi transparent stain in Metro Detroit Michigan
Michigan Deck Repair | Common Deck Posts Questions | Split Deck Support Posts | Deck Posts Splitting
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