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
- 13 Lazy Cleaning Tricks for a Spotless Home
- Laundry Room Ideas to Knock Your Socks Off
- Insanely Easy 60-Minute Home Improvements
- 12 Sheds You Could Live (or Work) In
- Assembly Required: 15 DIY Kit Homes
- 7 House Sounds You Never Want to Ignore
- 10 Surprisingly Simple Woodworking Projects
- Worth It: 8 Renovations That Pay You Back
- Organize Your Life with 12 Dollar-Store Buys
- 9 Totally Amazing Mobile Home Makeovers
- Don't Make These 7 Mistakes in Small Spaces
- 20 Sneaky Storage Ideas
- 15 Totally Unexpected DIY Flooring Alternatives
- 7 Easy Budget-Friendly Backyard Makeovers
- 10 Closet Cures That Cost Less Than $100
- 11 Easy DIY Projects to Declutter Your Home
- 10 "Zero Dollar" Garden Hacks
- 10 Killproof Plants for a No-Effort Landscape
- 9 Insanely Easy 1-Hour Backyard Projects