Mobile Home Roof-Over and Roof Coating in Myrtle Beach

Roofing is not leveling work, but it lands on our list for the same reason skirting and vapor barriers do: we are the crew already under and around your home, and a roof that has been leaking long enough eventually becomes our problem too. Water that gets in at the ridge or a seam does not stop at the ceiling. It works down through the panels, into the wall cavity, and eventually into the floor decking and the frame we would otherwise be releveling.

By the time a soft spot shows up in the floor from a roof that has been leaking for a year, the expensive repair is not the roof anymore.

Roof-over or coating: two different jobs

Getting this choice wrong is the expensive mistake, so it is worth being specific about what each product actually is.

A coating is maintenance for a roof that has aged but not failed. An elastomeric or silicone coating goes on over the existing metal, sealing every seam and every exposed fastener head and adding a reflective surface on top. It does not fix a roof that has already given out, it protects one that has not. Done at the right time, a coating adds years to a roof at a fraction of what a full roof-over costs.

A roof-over is a replacement, not a repair. A new insulated aluminium or steel panel system, or a membrane roof, goes on over the existing roof rather than tearing it off, fastened through to the structure and sealed and trimmed at every edge. That is the answer once the existing roof has widespread rust-through, seams that have opened and will not reseal, or low spots holding standing water after every rain. None of those are things a coating fixes; a coating over a failed roof just traps the moisture that is already getting in.

Coating a roof that needs a roof-over is the most common mistake. It looks fixed through the next dry season, then the trapped moisture finishes off the metal underneath, and the homeowner ends up paying for the coating and the roof-over that was always coming.

What to check before anyone quotes you

A few minutes from inside the home tells you most of what you need to know:

1. Ceiling panels. Soft spots, bowing between trusses, staining around a ceiling vent or along a panel seam, or a musty smell, all point to water already past the roof.
2. Seams and fasteners from the outside. Sealant that has cracked and lifted along a whole seam, or screw heads showing rust rings, is failure rather than ordinary wear.
3. Standing water. If water is sitting on the roof a day after rain, the roof has lost its pitch or its drainage, and no coating changes that shape.
4. How many times it has already been coated. A roof carrying two or three old coatings has a thick, cracked buildup that a new coating will not bond to properly.

Why Horry County is hard on a mobile home roof

Two things work against a roof here, and they are different problems.

Heat and UV do the slow damage. Myrtle Beach averages more than 2,800 hours of sunshine a year, and July and August mean highs run in the mid- to high-80s, with the summer record reaching 104°F. That sun bakes the sealant out of every seam and every fastener long before a storm ever gets the blame for a leak. An annual look at the roof catches this stage; waiting for a visible leak means the sealant has usually been failing for a couple of summers already.

Storms and salt air do the fast damage. Horry County sits on the Atlantic coast, and the Grand Strand has taken direct and near-direct hits going back to Hurricane Hazel in 1954, still regarded as the worst hurricane in Myrtle Beach’s history, through Hugo in 1989 and Florence in 2018, whose rainfall put record flooding on the Waccamaw at Conway. Wind-driven rain during any of these finds a weak seam fast, and salt-laden air off the ocean corrodes exposed fasteners faster the closer a home sits to the coast, which matters more right around Myrtle Beach and Surfside Beach than it does further inland toward Conway, Loris, or Aynor. September and August are also our wettest months on average even without a named storm, so a roof with a marginal seam gets tested every year, storm or not.

Every manufactured home in Horry County is built and has to be maintained to HUD Wind Zone II, a 100 mph design standard. Whichever product goes on, a coating system rated for the surface it is going over, or a roof-over system installed and fastened to the manufacturer’s Wind Zone II spec, has to hold to that rating. That is a question worth asking any roofer who quotes you: what wind rating is this system installed to, and is that written into the job.

What we could verify on permits and licensing, and what we could not

South Carolina requires roofing work over $500 in labor and materials to be performed by someone registered with LLR, either as a licensed Residential Builder or as a Residential Specialty Contractor holding the Roofer trade classification, which LLR defines as installing, altering, and repairing the materials that form a watertight surface on a residential roof. That is a separate registration from the Manufactured Housing Board licence that covers the leveling, pier, and anchor work described elsewhere on this site, so it is worth asking a roofing crew which one they hold.

On permits: Horry County does not require a permit to replace shingles on a like-for-like basis, unless the structural roof sheathing itself is being replaced. A roof-over is not that case, it is a new roof system built over the old one rather than a shingle swap, so we cannot tell you from here whether your specific job needs a county or city permit. Ask Horry County Code Enforcement, or your city’s building department if your address is inside Myrtle Beach, North Myrtle Beach, or Conway city limits, before work starts.

Why we raise it on a leveling call

Because the downstream damage shows up underneath first. A home with a roof that has been leaking for a while shows it in a predictable order: wet, sagging ceiling panels, wet framing at the top of the walls, and eventually wet floor decking, usually starting at an outside wall, which is the kind of soft floor that turns into a much bigger repair than the roof ever was. When a crew is under a home doing a relevel or checking the vapor barrier, a soft spot at an outside wall with no sign of ground moisture below usually means the water came from above, and that points back to this page.

What it costs

Roof work gets quoted from the actual roof rather than a table, because size, existing condition, and how much trim and edge work is involved move the number more than a published range can honestly capture. As a starting point:

• A coating on a sound roof runs roughly $1,000–$3,000 on a singlewide and $2,000–$5,000 on a doublewide.
• A metal or membrane roof-over runs roughly $4,000–$12,000, with a singlewide toward the lower end and a doublewide with more trim work toward the top.
• Small leak and seam repairs, short of either full product, run $300–$1,200.
• Decking or framing repair found once a roof-over starts comes in as its own line item, priced before the work continues, not folded quietly into the total.

The leveling, pier, and anchor pricing this business is built on stays on the published pricing page.

Get the roof looked at

Tell us your home’s size, roughly how old the roof is, whether it has ever been coated, and what you can see from inside. Photos of the ceiling and of the roof surface help us tell you which conversation you are having before anyone climbs up. We cover Myrtle Beach and the rest of the Grand Strand, including Conway, Socastee, North Myrtle Beach, Surfside Beach, Murrells Inlet, Garden City, Little River, Loris, Longs, Carolina Forest, and Aynor.