Engineered Hardwood Installation in Lilburn, GA

A floating installation is one of the simplest ways to put engineered hardwood over a slab or an existing subfloor, and it is a common choice for Lilburn homeowners who want real wood without a full spread of adhesive or rows of fasteners. The planks lock or glue to one another rather than to the floor beneath, so the whole surface rests on an underlayment as one connected sheet.

That freedom comes with a few rules. Here is how floating engineered floors behave and what has to be right for one to perform well.

How a floating engineered floor works

Most floating engineered products have a click-lock edge that snaps rows together; some use tongue-and-groove edges glued along the joints. Either way, nothing ties the floor to the subfloor. As seasonal humidity changes, the floor expands and contracts slightly as a single unit, which is why it needs room to move at every edge.

Since the floor is not attached, installation goes faster than a glued or stapled job, and the planks can be removed later with less damage to what lies underneath. Whether floating is allowed at all, and over which subfloors, is set by the manufacturer’s instructions.

Flatness comes first

A floating floor spans small dips instead of following them, and a plank resting over a low spot flexes each time it is stepped on. Over time that movement can strain the locking joints, cause clicking or open small gaps. Manufacturers state how much variation is acceptable over a given distance, and the subfloor has to meet it.

We check substrate flatness with a long straightedge in several directions across the room. High spots on concrete are ground down, and low spots are filled with a cement-based patch or self-leveling compound. On plywood, raised seams are sanded and loose panels screwed tight before any underlayment goes in.

Underlayment and moisture control

The underlayment does several jobs. It cushions the floor, softens footstep noise and evens out tiny surface flaws. Over concrete it must also include a vapor retarder, either built into the pad or laid as a separate plastic sheet with taped seams, so moisture rising from the slab cannot reach the wood.

A moisture test still comes first. A slab gets the test the manufacturer names, and a wood subfloor is checked with a meter. A vapor retarder slows the normal moisture in a slab; it does not fix water entering because of drainage problems.

Expansion space and run lengths

Every floating floor needs a gap at walls, door frames, cabinets and other fixed objects. Baseboard or shoe molding hides the gap along walls. At door casings, the casing is undercut so the planks slide beneath it with space to move.

Many manufacturers also limit how far a floating floor can run in one direction before an expansion break is required. In a house with long connected spaces, that may mean a T-molding at a doorway or a planned break in a less visible spot. We check those limits while measuring so they appear on the layout rather than as a surprise on installation day.

Cabinets, islands and heavy loads

A floating floor must stay free to move, so nothing permanent should be fastened through it. Kitchen islands, built-in cabinets and heavy fixed shelving are normally installed first, with the planks fitted around them and a gap left at the base. Very heavy items such as a piano or a large aquarium can pin the floor and may justify a different method in that room.

Ordinary furniture is fine. Felt pads under chair and table legs protect the finish and let the floor move as designed.

Plank size, direction and transitions

Longer, wider planks show more grain and fewer seams, but they are less forgiving of an uneven subfloor, one more reason flatness gets so much attention. Plank direction usually follows the longest wall or the main view into the room.

Where the floating floor meets tile, carpet or another wood, the transition pieces have to allow for movement as well. Adjoining floor height decides the profile: a T-molding between similar heights, a reducer down to a thinner surface. Your written estimate should name the underlayment, the transition pieces and the trim, note any acclimation the product needs and explain how changes are approved before work continues. If you would rather have boards nailed down permanently, our solid hardwood floor installation page describes that approach.

Lilburn permit contact

Lilburn is in Gwinnett County. If your plans go beyond flooring to include structural, plumbing or electrical changes, you can ask the City of Lilburn Business Services Department, through its building and trade permits page, whether a permit applies.

Common questions about floating engineered floors

Why does a floating floor need a gap around the edges?

Wood takes on moisture in humid months and gives it up when the air is dry, and a floating floor moves as one piece when that happens. Without space at the walls, the floor has nowhere to go and can push against baseboards, lift at the joints or buckle. The gap is covered by baseboard or shoe molding, so it is not visible once trim is installed.

Can I put a kitchen island on top of a floating floor?

Generally not. Fastening an island or cabinet through a floating floor pins it in place, and the rest of the floor can no longer expand and contract freely. The usual approach is to install the island first and fit the planks around it with a small gap covered by trim. Check the manufacturer’s instructions, since some products allow limited fixed loads.

Does a floating engineered floor feel different from a glued one?

A little. Because it rests on an underlayment, a floating floor can feel slightly softer and sound more hollow underfoot, especially if the subfloor is not flat. A dense underlayment and careful preparation reduce both. Many people find the difference minor in daily life, but if a solid sound matters to you, ask whether your product can be glued instead.

Talk with us about your Lilburn floor

To find out whether floating makes sense for your rooms, call 404-409-4448. Describe the space and what is on the floor now, and we can set up a time to check flatness and moisture and put together a written estimate.