Hello all, I have a 22 year old gunite pool with a failed expansion joint. The pool and or deck has settled thru the years so some places the expansion gap is larger than other spots. I have had some delineation and have some hollow red brick safety coping with some hollow tiles as well. I know the time is coming for an overhaul but the 23K quote is not in the budget with 2 kids in college. Right now I have all of the old expansion joint material removed and have deck o foam 1/2" x 3" to replace it with. Question is, some places I can see several inches of erosion on the deck side and under where the new joint will sit. Should I fill this in to a point where the expansion material will be just below the deck and if so with what? Topsoil, maybe expanding foam. Any ideas or input is much appreciated. Thanks gang!
Erosion Under Expansion Joint
- Thread starter jjmosc
- Start date
- Jul 21, 2013
- 52,665
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Can you post some pics of those erosion areas you need to fill?
I think the answer is to stuff foam backer rod into the spaces.
I think deck-o-foam is used for new construction but I would stuff foam backing rod into the joint and spaces and then top it with Deck-O-Seal.
DECK-O-SEAL - Polysulfide-Based Joint Sealant
Joint Sizes … Proper joint design practices and application techniques must be followed for successful performance. DECK-O-FOAM®, KOOL-ROD™, or KOOL-ROD SOFT from W. R. MEADOWS may be used as a joint backing material to control sealant depth and provide proper joint configuration. For larger joints, use a non-asphalt joint filler, such as CORK EXPANSION JOINT from W. R. MEADOWS, in the joint before sealing.
A 2:1 width-to-depth ratio should be maintained. However, in no case should joint sealant depth be less than 1/4″ (6.4 mm) or exceed 1/2″ (12.7 mm). DECK-O-SEAL should NOT be used in joints less than 1/4″ (6.4 mm) wide.
I think the answer is to stuff foam backer rod into the spaces.
I think deck-o-foam is used for new construction but I would stuff foam backing rod into the joint and spaces and then top it with Deck-O-Seal.
DECK-O-SEAL - Polysulfide-Based Joint Sealant
Joint Sizes … Proper joint design practices and application techniques must be followed for successful performance. DECK-O-FOAM®, KOOL-ROD™, or KOOL-ROD SOFT from W. R. MEADOWS may be used as a joint backing material to control sealant depth and provide proper joint configuration. For larger joints, use a non-asphalt joint filler, such as CORK EXPANSION JOINT from W. R. MEADOWS, in the joint before sealing.
A 2:1 width-to-depth ratio should be maintained. However, in no case should joint sealant depth be less than 1/4″ (6.4 mm) or exceed 1/2″ (12.7 mm). DECK-O-SEAL should NOT be used in joints less than 1/4″ (6.4 mm) wide.
Thanks ajw22, I will take some pics and post this evening. I was planning on using backer rod and thick closed cell foam strips for the wider sections. My plan was to place the deck o foam on the deck side so maybe it could be saved when I start repairing the hollow coping. I don't believe any joints are less than 1/4" but if I find any I was going to grind the edge of the deck as needed. Thanks again!
Hello again, I have the old expansion joint out and it was nonexistent in some places. My question is in a few places the beam and deck are touching. I don't believe this should be but not quite sure how to remedy it? Banging on the beam with a hammer and chisel seems a bit aggressive. I am trying to grind the deck to create the space for the new expansion joint but this is painfully slow. Any suggestions appreciated.
- Jul 21, 2013
- 52,665
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60