Mastic Removal in Portland, OR and Vancouver, WA
Complete Coatings NW removes old mastic and adhesive from concrete across Portland, OR and Vancouver, WA and nearby areas, grinding the stubborn residue off your slab so a new coating, polished floor, or new flooring can bond. Mastic is the sticky, often black adhesive found beneath old tile, vinyl, and parquet, and it is one of the most difficult residues to clear from a floor. Scraping alone will not do it. We grind it off properly and prepare the slab, leaving a clean surface ready for whatever comes next. If old mastic is standing between you and a new floor, this is the service that clears the way.
What mastic is and where it is found
Mastic is an adhesive that was widely used to glue down flooring, and it tends to turn up when older floors come out. You will most often find it under:
- Old vinyl tile and sheet flooring: including vinyl composition tile, where mastic held it to the slab.
- Ceramic tile: some older tile was set in mastic rather than modern thinset.
- Parquet and wood flooring: glued down over concrete.
It frequently appears as a dark, tar-like layer, sometimes called black mastic or cutback adhesive, smeared across the concrete once the flooring above it is gone.
Why mastic is so stubborn
Mastic does not behave like a residue you can scrape and sweep away. It is sticky and, depending on temperature, either hard and brittle or soft and smeary, and it clings to the concrete in a thin, uneven film that fills the surface pores. Hand-scraping tends to just move it around, and solvents sold for home use rarely clear it fully from a real floor. Removing mastic reliably takes professional grinding to work the adhesive off the slab and bring the concrete back to a clean, even surface. That is the only way to be sure none is left to interfere with the next floor.
A note on older mastic
If your mastic dates from an older building, it is worth knowing that some black mastic and cutback adhesives from certain eras can contain materials that should be identified before they are disturbed. If you are unsure of its age or makeup, having the material tested before removal begins is a sensible precaution. We are glad to talk through your situation and point you in the right direction so the job is handled responsibly from the start.
The process is straightforward once the right approach is set:
- Assess the mastic. We look at the type, age, and how it is bonded to determine the right removal method.
- Grind it off. The mastic is ground away from the slab with professional equipment and dust control.
- Clean and profile. The concrete is cleaned and ground to an even surface with the profile a new floor needs.
- Ready the slab. The clean, sound concrete is prepared for a coating, polish, or new flooring.
Mastic is one of the toughest things to get off a slab. Grinding it away completely is what gives the next floor a clean surface to bond to.
What comes next
Once the mastic is ground off and the slab prepared, your floor is ready for a fresh start. Many customers choose polished concrete or a durable new coating, while others install flooring of their choice. Mastic removal is part of the broader demolition and removal work we handle. It often goes hand in hand with tile removal, since mastic hides beneath old tile, and with carpet and adhesive removal when a space has more than one kind of glued-down material.
Clear the old mastic, ready your slab
If old adhesive is in the way of your new floor, we will grind it off and prepare the slab for what comes next. As a family owned and operated company that handles removal and installation together, we take the project from residue-covered concrete to a finished floor.
Call (971) 247-9844 to get started. We are based in Portland, OR and serve the Portland metro, Vancouver, WA, and SW Washington and nearby areas.