Full-depth repair · Based in Eau Claire
Saw Cut and Replace Asphalt Patching
A patch fails at its edges before it fails anywhere else. Cutting a clean vertical line and rebuilding to full depth is the difference between a repair that lasts and one you are looking at again in two winters.
Why the Edge Decides It
A failed area does not have a boundary. It has a middle that is obviously gone and an edge that fades out into asphalt that looks fine and is not. If you dig to the damage and stop, you leave a ragged, sloped, half-broken perimeter, and you lay new material against it.
That perimeter is where the patch dies. A sloped edge means the new asphalt tapers to nothing at the join, so it is thinnest exactly where the wheel loads cross it. A ragged edge cannot be compacted against, so the join is loose. And a broken edge is already cracked, so water goes straight down it into the base you just rebuilt.
A saw cut fixes all three at once. It gives a straight vertical face, full depth, through sound material, so the new asphalt is at full thickness right up to the join and there is something solid to compact against.
It is also why the cut is made outside the visible damage rather than on it. Where the failure ends is not where it looks like it ends.
When This Is the Right Repair
Saw cut and replace is for failure that goes through the surface into the base: potholes, alligator cracking, areas that flex under your foot, and anything that has sunk. Those are structural, and no surface treatment fixes them.
It is the wrong repair when the surface is only worn or cracked but still solid underneath. Cutting sound asphalt out costs money and adds joints, and joints are what you spend the rest of the lot's life sealing. Cracks in a sound surface get filled hot; a gray but solid surface gets sealed.
It also stops being the right answer when there is too much of it. Once roughly a quarter to a third of a lot has to be cut out, you are patching patches, and an overlay or a rebuild becomes better value. Measuring how much has actually failed is what the estimate is for.
The tell
- Flexes underfoot the base has gone, cut it out
- Cracked but solid fill the cracks
- Gray but sound seal it
- A third of the lot price an overlay instead
Standing on the broken area and feeling whether it moves is the quickest test there is, and it is one you can do yourself before anybody quotes it.
How We Do Saw Cut and Replace Patching
Where the cut goes, what comes out, what goes back, and how the joint is finished.
Find the edge of the failure
The visible hole is smaller than the damage. We sound out where the surface is still supported and mark the cut outside that, not around the hole.
Saw a vertical face, full depth
A saw gives a straight vertical face through sound material, full depth. New asphalt then sits at full thickness right up to the join, with something solid to compact against.
Break out and haul off
The whole thickness of the cut area comes out and gets hauled off, rather than a set depth ground off the top. That is what separates saw cut and replace from milling.
Dig to something firm underneath
Everything soft comes out. A wet bottom in an open cut is a drainage problem, and the best patch in the world will not last sitting on water.
Rebuild and compact the base
Base back in, compacted in layers rather than dumped and rolled once. It is the invisible step that decides whether the repair lasts two years or twenty.
Lay asphalt in lifts, compact each
Hot mix laid to the surrounding grade so water still runs where it is supposed to, in lifts, with each one compacted before the next goes on.
Seal the joint around the perimeter
The perimeter joint gets sealed against the next freeze. A patch fails at its edges before it fails anywhere else, and an open joint is where the water goes down.
What Usually Comes With It
Cutting the pavement open exposes what put it there in the first place.
This page is the method. For potholes, alligatoring and sunken areas generally, see asphalt repair.
Questions We Get
Why saw cut instead of just digging out the bad part?
How far outside the damage do you cut?
Is this the same as milling?
Will the patch be a different color to the rest of the lot?
How soon can we drive on it?
Send a Photo of the Worst Area
Stand on it first. Whether it moves under your weight is the single most useful thing you can tell us, and it decides which repair you are actually buying.
(715) 450-9897