Engineered Hardwood Installation in Doraville, GA

For a house built on a concrete slab, engineered hardwood is often the most practical way to get a real wood floor. The main question for Doraville homeowners in that situation is how the planks will be held down: glued directly to the slab or floated over it. Both work, and the right answer depends on the slab, the product and how you want the floor to feel.

Glue-down versus floating on concrete

A glued floor is held to the slab by a full spread of flooring adhesive. It feels solid, sounds like a traditional wood floor when you walk on it and has no limit on how far it can run without a break. It does ask more of the slab: the concrete must be flat, clean and dry enough for the adhesive.

A floating floor joins the planks to one another and rests on an underlayment with a vapor retarder. It goes in faster and is easier to remove later, and it can tolerate some surface imperfections that would cause trouble for glue. The trade-offs are a slightly hollower sound underfoot and limits on run length and on fixed weight placed on it, such as cabinets.

Moisture control on slabs

Concrete can release moisture for a long time, and a slab that looks dry can still fail a test. Before any adhesive or underlayment is chosen, the slab is tested using the method the adhesive or flooring manufacturer names. Common approaches include relative humidity probes set into the concrete and calcium chloride emission tests.

If readings exceed the limits, there are options: an adhesive formulated to resist moisture, a separate moisture-control membrane, or a floating floor over a vapor retarder. Persistent moisture from drainage problems should be addressed before any wood goes in.

Substrate flatness and how it is fixed

Glued planks follow every contour of the slab, so a dip becomes a hollow spot under the floor and a hump becomes a high ridge. We check flatness with a long straightedge and compare it with the manufacturer’s tolerance. Ridges and trowel marks are ground down, and low areas are filled with a cement-based patch or self-leveling compound.

Floating floors also have a flatness tolerance, so even when we float, low spots are corrected before the underlayment goes down.

Plank dimensions

Wider and longer planks look striking, but they need a flatter slab, and wide planks in particular are more sensitive to moisture. Narrower planks are more forgiving and fit smaller rooms visually. Thickness affects the height at doorways and next to other floors. We review those trade-offs with you while you are choosing samples, so the order matches what the slab can support.

Plank direction and adhesive layout

Over a slab, there are no joists to worry about, so plank direction is mostly about appearance and room shape. Planks running the length of a room or along the main sightline usually look best. In a long, narrow room, running them lengthwise keeps the space from looking chopped up.

For glue-down, adhesive is spread in sections small enough to set planks before it skins over, using the trowel notch the adhesive label requires. We lift a plank now and then to confirm the adhesive is transferring fully to its back.

What the estimate includes

The written estimate lists the rooms and square footage, slab testing, grinding or leveling, the chosen method with its adhesive or underlayment, transitions, trim and cleanup. It also states exclusions and how newly found problems will be priced and approved. Solid flooring is generally not laid straight onto concrete, which is one reason slab homes lean toward engineered planks; solid hardwood installation in Doraville covers the other product.

Doraville permits for related work

Doraville is in DeKalb County. If your project includes structural, plumbing or electrical work along with the floor, check the City of Doraville Community Development permits page or ask that office whether a permit is required.

Slab flooring questions

Is a glued engineered floor quieter than a floating one?

Usually, yes, at least for the person walking on it. A glued floor has no air space beneath it, so it sounds and feels much like traditional hardwood. A floating floor can produce a slightly hollow sound, which a good underlayment reduces. For noise reaching rooms below, the underlayment and subfloor matter more than the method alone.

What happens if the slab fails the moisture test?

The plan changes before any flooring goes down. Depending on how high the readings are and what the manufacturer allows, the fix might be a moisture-resistant adhesive, a separate moisture-control membrane, or a floating floor over a vapor retarder. If water is entering from outside, drainage or grading problems should be fixed first, because no product will hold up to ongoing water.

Which direction should planks run in a narrow room?

In most narrow rooms, lengthwise. Running planks along the long walls keeps the floor visually calm and avoids lots of short rows. On a slab, there are no joists to dictate direction, so appearance and how the room connects to neighboring spaces decide it. We confirm the direction with you before marking layout lines.

Talk with us about your slab

To find out which method your slab supports, call 404-409-4448. We will test the concrete, check flatness and price the method that suits it in a written estimate.