DIY Repair Sidewalk Expansion Joints | Storage of cleaning accessories at Best

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DIY Repair Sidewalk Expansion Joints
DIY Repair Sidewalk Expansion Joints

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Looking for a cheaper way to seal sidewalk expansion joints? Try using the extra large size self-leveling sealant and watch this video for other tips. Never seal with mortar…my neighbors do this and it just cracks..

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  1. I have a cement patio and I have a gap between the house and slab, can I do this same approach up against the foundation or would you do something different?

  2. Backer rod can be combined to fill the gap. A 3/4 and a 1/2" inserted and "rolled in" together will make a tight fit and save you $$$ on the sealant.

  3. Can I use a 4.5 gallon bucket of black tar instead ??? I have a 2 inch spread by 80 feet total between cement slabs. Thanks 👍🏼

  4. That stuff looks great when you first install it but give it a few years and see what the UV rays do to it. I did my driveway and sidewalk with that stuff to the tune of about 200 bucks for sealant and it is all shriveled up and cracked now. Maybe pouring sand over it before it dries out will protect it from the UV rays.

  5. I just used this technique for many of my joints…. Some I added baker rod if it was wide and deep enough. My question is, how many years should I expect this to last before it needs to be redone?

  6. A suggestion to anyone applying this. You may want to cover the joint after you apply the sealant because it stays sticky for a few hours. If there is even the slightest breeze then debris will be blown into your joint and mess it up. So cover with something that will not touch the surface of the sealant. You might try cutting some strips of cardboard and bend them into a V shape that you place inverted over the joint. And of course you want to keep any traffic off the joint for as long as you can but a minimum of 24 hours.

  7. As a business man that owns a caulking company; HOMEOWNERS call the pros please. Anytime you go with a professional company you always get a warranty. Not only does that tar need to come off but the whole joint need ground out for fresh adhesion. And never use sand as a foundational barrier; use backer rod as sand will leave dust behind on the inside walls of the joint which therfore causes the caulking to separate once cured. This happens because the caulking could not adhere to dust. And if you are a home owner repairing your driveway please go to the nearest caulking distributor that specializes in "industrial grade" caulking. Not to mention these local distributors should have backer rod all the way up to 4 inches in width. Let this dry no less than 24 hours. Do not caulk if moisture is in the subgrade as it will evaporate and cause bubbles in the caulking. Same goes for a very hot and humid day. Best temperature is anywhere from 60 to 80 degrees. This joint here that was performed on this video should have been a half inch depth considering how wide the joint was. Never go more than a half inch depth on any sized joint otherwise it will fail.

  8. I've used the same product for my driveway expansion cracks and I found that paver base or finely crushed stone works better than sand to strengthen the adhesion of the caulk to the concrete surface. If the crack is deep enough I put pebble size landscape rock from my yard inside the crack so you get adhesion from all around the rocks and concrete sides of the crack. To damn up the sides, if you don't have a paint stick, I used a large piece of a cedar chip mulch from my flower beds or find a large flat stone laying around. The shallower the crack the longer the sealer will last. Preferable no more than a 1/4" in depth is the longest lasting adhesion.

  9. The joint was indeed wide for the available sizes of backer rod. However, I have seen backer rod as large as 4 inch. I found some 2" which is what would have been required in this instance, but is was about a $1/foot (in 2016). Sika recommends: "Where the depth will not permit the use of a backer rod a polyethylene bondbreaker tape may be used." It's best that the sealant bonds only to the 2 sides of the joint and not the bottom to prevent failure from extended flexion and/or aging.

  10. Why did you elect not to apply sand to the top of this repair as you did with your driveway expansion joint repair video?

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