Example: Use a 3/4"-7/8" rod to fill a 1/2" gap. Compress the rod into the crack leaving it about 1/4‚Äù-3/8" below the surface then fill in over top of it using the caulking.
If you use self leveling polyurethane caulking, it will flow out flat filling the crack.
You do not want to fill the entire depth of the crack with caulking. Without using the backer rod first the caulk will not adhere well to the wall and the concrete slab through periods of movement caused by expansion and contraction.
- 15 Old House Features We Shouldn't Abandon
- 17 Tiny Bathrooms We Love
- 30 Things Everyone Should Know
- 21 Expert Choices for Fail-Safe Paint Colors
- 20 Easy 60-Minute Home Improvements
- 10 IKEA Favorites Made New with Paint
- The Tiniest Appliances You Never Knew Existed
- 133 Smart Storage Ideas for the Whole House
- 16 New Ways to Store Kitchen Necessities
- 8 Ways to Make a Small Room Look Big
- Sweet Dreams: 15 Inventive Beds You Can Make Yourself
- 10 Fall Door DIYs for the Best House on the Block
- The Cheapest Ways to Boost Home Value
- 10 New Uses for Old Doors
- 26 Easy Painted Pumpkins for Halloween
- 15 Once-Popular Home Items Now Vanishing
- 8 Unique Ways to Build Your Own Table
- Woodworking for Beginners: 10 Projects
- 7 Reasons to Reconsider Wallpaper
- 10 New Uses for Old Dressers
- 7 Upgrades You Can Do in Under 300 Seconds
- 10 Thrifty DIY Ways to Organize Your Home
- 12 "Different" Ways to Store Firewood
- 5 DIY Farm Table Projects That Will Last a Lifetime
- Beyond White: 11 Bathroom Paint Colors
- 10 DIYs for a Festive Front Door This Fall
- 10 Creative New Ways to Use Old Bottles
- The 10 Best Things to Buy Secondhand
- 16 Must-See Coffee Tables You Can DIY—Easily!