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Demox

Miami-Dade County

Concrete Demolition

Slabs, footings, driveways, decks and walls cut, broken out and hauled.

Who usually calls

Often a sub-scope inside someone else's job. The buyer cares about cutting method, vibration and whether the opening lands on the line.

Concrete work splits into cutting and breaking, and choosing wrongly is expensive. A saw or a core drill gives a clean edge, controlled dimensions and far less vibration; a breaker is faster and cheaper where the edge does not matter and the surroundings can take it. Most jobs want both, in the right places.

Slabs, footings, driveways, decks, stairs, kerbs and walls all behave differently, and the reinforcement inside decides more than the thickness does. Mesh, rebar and post-tensioned slabs are three different jobs, and the last of those is genuinely dangerous to cut without knowing where the tendons run. A post-tensioned slab gets scanned before anyone starts.

Dust and water are part of the scope, not an afterthought. Cutting dry indoors without extraction puts silica in the air; cutting wet puts slurry on the floor and it has to go somewhere. Which one is used, and what happens to the result, belongs in the quote.

Licensing, plainly

This scope is licensed contracting in Florida, and ISP GROUP LLC does not hold that licence today. So we are not offering to perform it and you should not read this page as a bid for it. What is written here is what the work involves and what the county requires, which is true whoever does it.

What we can do now: walk the site, scope and document the work, handle the survey, the notification and the permit paperwork, bring in a licensed contractor who contracts that part directly with you, and do the clearance, haulage and disposal ourselves. When you take bids, ask every contractor for a licence number and verify it on the issuing register.

Wall saw running a clean vertical cut, water feed, slurry control.
Wall saw running a clean vertical cut, water feed, slurry control. Generated footage, not a job of ours and not a recording of one. It shows what the scope looks like. Our own work goes up as clients release it.

Scope

What is in the job.

Included

  • Scanning before cutting where reinforcement or post-tensioning is possible, or the drawings are missing
  • Saw cutting, core drilling, wall sawing or breaking, chosen per element and stated in the scope
  • Dust extraction or water suppression, with slurry collection where cutting wet
  • Shoring or temporary support where removal affects load paths, to an engineer's design
  • Material broken down to a liftable size, separated, hauled and weighed
  • Edges left to the stated finish, openings secured
Wall saw running a clean vertical cut, water feed, slurry control.
Licensed stock photograph of the same kind of work.

What moves the price

We do not publish a rate for this, because a number given without seeing the site is either useless or untrue. These are the things that decide it.

  • Thickness and reinforcement, which set the cutting rate more than the area does
  • Cut or break. A clean edge costs more per metre and is sometimes unavoidable
  • Disposal tonnage, because concrete is heavy and priced by weight
  • Access for the material to leave, especially above ground level
  • Whether the element is structural, which adds an engineer, shoring and a permit line

Permits

Where this scope sits with the county.

Cutting or removing a structural element is permitted work and needs an engineer's drawing before it is applied for. A non-structural slab or driveway often is not, but the county decides that on the detail, not on the word used in the quote. Miami-Dade requires an asbestos survey before demolition regardless of the year the building went up, and the federal NESHAP notification runs ten working days from a correctly filed notice. That clock runs in parallel with everything else, so it is filed first, not last.

Have this ready

  • Drawings if they exist, especially anything showing reinforcement or post-tensioning
  • Photographs of both faces of the element where both are reachable
  • What is under and behind it: services, occupied space, parked cars
  • Whether the edge is visible in the finished work, which decides cut against break

None of it is required to get a visit booked. All of it makes the number firmer and the date earlier.

The full permit sequence, with sources, is on the permits and asbestos page.

Questions

What people ask about concrete demolition.

Can you cut a slab without knowing what is in it?

Not responsibly. Scanning is cheap against cutting a tendon or a live conduit, and on a post-tensioned slab it is not optional.

Wet or dry cutting indoors?

Dry with extraction keeps the floor usable; wet keeps the dust down but produces slurry that has to be collected and disposed. Which one suits depends on the room and on what is below it.

Why is a small opening sometimes expensive?

Because the cost is in setting up, scanning, supporting and making good, and those barely change with the size of the hole.

Usually bundled with