Concrete joint expansion

[rmankty]

Hello, does anyone do this or know credible people who do this in S.E.Michigan? I have started to fill in joints between concrete in driveway/parking areas on home. I can finish myself,but i thought I'd check on this with forum. Would be faster with good size portable air compressor, if cost is not more than Im willing to pay.Have a price now at $3.50 per lineal foot. Any advice? Thank you for your assistance!

 

[crash325]

Not sure what you are trying to do. Fill in joints in old concrete. pour more concrete or ???

Unless you have a very large area a calking gun will do the job.

Pouring new concrete 30# felt paper is fine to put between pours. There is also some thicker tar based products.

Modern thing is to just cut a grove every few feet to give it a place to crack.

 

[Bird]

I don't understand the question at all. What's an air-compressor got to do with expansion joints in concrete? I did use my air-compressor and blow gun to clean out expansion joints and cracks before partially filling them with sand and then SikaFlex SL.

 

[radioman]

I don't understand the question at all. What's an air-compressor got to do with expansion joints in concrete?

X2:confused3:

 

[NOTV8]

Looks like the compressor is for cleaning before sealing... if I read it correct. I use my blower (back pack or on wheels whichever I grab) when I do it. Put backer foam if it is too wide and deep then seal it.

 

[AGGIE00]

You're right that you need to clean the joints with compressed air. Get some backer rod to fill the crack so that you have 3/4'" left and seal with SL-1. If you have to rent a 185 it may be cheaper to hire out if there isn't enough footage to justify.

 

[Egon]

Pressure washer would also work. Many times just a garden hose will do it.