Best Concrete Patio Addition Contractors Burlington NC

Marrying new concrete to old is the entire discipline of patio additions, and it's less forgiving than fresh work. Three variables have to line up: the elevation must carry across the joint without a lip, the finish must be close enough that a season of weathering erases the difference, and the two slabs must be pinned together so Burlington's shrink-swell clay can't tilt one away from the other. We drill and epoxy dowels into the existing edge, form the addition a hair under flush, then match the finish — broom direction included, since texture running the wrong way announces the seam from across the yard. Get those right and the patio reads as one pour that was always this size.

In Burlington specifically, patio addition work runs through neighborhoods like West Davis Street, East Davis Street, South Broad-East Fifth. Neighborhoods that housed textile workers and managers, Beverly Hills, the Davis Street districts, and Glencoe Mill Village, were built between the 1890s and 1940s, and their driveways and walks are the oldest concrete we replace anywhere in the Triad region. That local ground truth — not a generic spec sheet — is what the crew builds against when they form up a Burlington addition.

Our Patio Addition Services

Patio addition work looks simple from the outside — a rectangle poured next to another rectangle. What actually decides whether it looks and holds up as one patio is the tie-in detail and how the base under the new section is built.

• Small extensions to add a grill zone, fire-pit landing, or dining area next to an existing slab
• Full patio expansions that double or triple the original footprint
• Wraparound additions that turn a corner of the house and connect to the existing patio
• Step-down or step-up extensions when the yard grade changes across the addition
• Pergola or screen-room pads added off an existing patio with anchor points planned before the pour
• Connection pours that bridge an existing patio to a new pool deck, walkway, or driveway apron
• Finish and color match on broom, stamped, exposed aggregate, and integral color patios
• Complete tear-out and repour when the existing slab is too far gone to tie into cleanly

Some additions are honestly better done as a full replacement — if the original patio is cracked, sunken, or has a finish that can't be matched, chasing a tie-in on a failing slab just stacks two problems together. We will walk the patio, tell you where you stand, and price both options.

Why the Cold Joint Detail Matters

A patio addition creates a cold joint — the seam where new concrete meets fully cured concrete. That joint is the single most important detail on the job. Done right, it disappears visually and holds tight for decades. Done wrong, it opens up within a season and telegraphs across the whole patio.

What a proper cold joint tie-in looks like:

• The existing slab edge is cleaned back to sound concrete, saw-cut straight if the edge is broken up
• Steel dowel bars are drilled into the existing slab edge on 12-to-18-inch centers, epoxied in place, and extend into the new pour
• The dowels are typically sleeved on the new side so the two slabs can expand and contract independently without shearing the joint
• The new base is compacted to match — or exceed — the compaction of the original base under the existing slab
• The new pour is placed at the exact same finish elevation as the old slab, with the finisher working the seam by hand to blend the surface texture
• A control joint or expansion joint gets tooled or sawed at the cold joint line so any future movement happens along a planned seam

Skipping the dowels is the most common shortcut on patio additions in NC. It saves an hour of drilling and epoxy at the pour and costs a re-crack repair within three to five winters.