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Asphalt resurfacing
asop
Member Posts: 8,977 ✭✭✭✭
So I thought they were going to remove the top 11/2" - 2" of existing asphalt and replaced with the same!! Should have their proposal more carefully. They are "overlaying" the existing and not removing (except a sidewalk and garage apron locations). Make any difference? Thanks
Comments
If the AC mates up to any other structures, they will need to do a profile grind.
It depends on the condition of the underlying asphalt. Also, the adhesion of the topcoat to the original surface. Done properly it won't make much difference. Cleaning, repairing and roughing up the surface and applying a tack coat before paving is the best procedure if laying over old asphalt. Bob
If they don't at least grind the surface, the top layer won't stick.
Don't let them do the job without surface prep, you'll just be throwing your money away especially if you live where it freezes or snows.
Is this company local or are they drive bys?
I agree with others. I would be out there watching to see if they rough up the old surface and apply something to make it stick. Otherwise, you are gonna be mad when it breaks off or rises up in the winter. Ask them before they start.
an overlay without prep work is the same as putting makeup on a pig. deep down you still have an ugly pig
Had an overlay, they did as Bobjudy suggests. No problem for last 7-8 years.
BobJudy is spot on with what they should do.
An overlay doesn't require "roughing" of the existing surface. The liquid "tack" is what adheres the new asphalt to the existing surface. It's the same as with new asphalt, the tar in the mix, or tack is the binding agent, that's why they can lay new a/c on smooth rock. When saw cut asphalt trenches are re-paved, tacking the sawed edges is standard practice, so no need to rough them up.
I stand corrected. That is nice to know. I would have thought the opposite. I just watch as they lay new highways over old asphalt, and they always cut the road up or scratch it with that machine. I did notice they put that layer of tact down first though. I guess it is like a very strong adhesive??? Learn something new every day. Thanks Todd.
They generally grind the existing asphalt with a cold milling machine. This serves two purposes, first, it's ground up and loaded into a truck via a conveyor belt on the machine and can be hauled back to the plant to be recycled into new asphalt. Second, if they didn't remove any asphalt, eventually, the road would be to high and the grades wouldn't work properly.
The title and video is a little funky, but it shows a milling machine in action.
Check out the next video on rock crawlers..
If new asphalt is applied over old cracked pavement, the cracks will work their way up to the surface.
Correct, you do need to have a good base.
Hey, not all pigs are ugly, remember Babe?