Mobile Welding ServicesOn-site welding & metal repair across Texas — we come to you
Mobile pontoon repair across Texas
A leaking pontoon tube, a cracked bracket or a cross member that let go on the trailer can end your season fast. Alpha Mobile Welding TX connects pontoon owners with partner welders who repair aluminum pontoons on site, at the lake house, the marina lot or your driveway, from the Gulf Coast ports to the inland lakes. Send photos and we’ll tell you what the repair looks like before anyone shows up.
Send photos of the damage for a faster estimate. Same-day visits depend on partner availability.
What the work involves
Most pontoon tubes, often called logs, are rolled from marine-grade 5052 aluminum and welded into sealed chambers separated by internal baffles. That design keeps the boat floating if one chamber is damaged, but it also hides problems. A hairline crack at a seam can let water in slowly for a whole season before the boat starts to list or sit low at the stern.
Repairing a pontoon properly means finding the leak, draining the chamber, cleaning the aluminum down to bright metal and welding with a filler that suits the base metal. On 5052 tubes our partners normally use 5356 wire or rod, laid with a MIG spool gun or TIG depending on thickness, position and access. The repair is then checked with low air pressure and soapy water before the boat goes back in.
The same skills cover deck brackets, cross members, motor pods, ladder mounts and the trailer underneath. For V-hulls, bay boats and jon boats, see our boat and marine welding page, and for general aluminum jobs, aluminum welding near me.
Common damage
Texas pontoons work hard: long summers, shallow coves, saltwater bays and plenty of highway miles on the trailer.
A boat that lists to one side, sits nose-down or feels sluggish usually has water in a chamber. The source is often a pinhole at a weld seam, a stress crack near a bracket or corrosion pitting.
Nose cones take the hit from stumps, rock ledges, docks and beaching. Shallow dents can often be left alone, but punctures and cracked cone-to-tube seams need cutting out and rewelding.
The welded brackets that tie cross members to the tubes crack from flex, rough roads on the trailer and wave pounding. Left alone, the crack keeps running into the tube skin.
Boats kept near Galveston Bay, Corpus Christi Bay or Port Aransas show pitting where salt sits, and galvanic corrosion where stainless fasteners or steel trailer parts touch bare aluminum.
Keels and lifting strakes get ground down on boat ramps, oyster reefs and sandbars. Worn strakes change how the boat tracks and can eventually expose the tube skin underneath.
Bigger outboards on tritoons put real load on the transom pod or motor bracket. Cracks around the mounting plate are a safety problem, not a cosmetic one.
Mobile pontoon services
Every job starts with an inspection, because the crack you can see is not always the whole story.
Leak hunting, chamber draining, stop-drilling crack ends where needed and full-penetration TIG or MIG welds with 5356 filler, finished with a low-pressure air and soap test.
Patch plates for torn cones, rewelding the cone-to-tube joint, or fitting a new cone section when the original is too damaged to save.
Rewelding cracked tube brackets, adding gussets where the design flexes too much, and replacing bent or broken C-channel or Z-bar cross members under the deck.
Properly sized aluminum patches with rounded corners, so stress does not pile up at a sharp edge and start a fresh crack right beside the repair.
New keel guards and lifting strakes, transom pod crack repair and reinforcement around outboard mounting areas on pontoons and tritoons.
Bunk brackets, cracked crossmembers, tongue repairs and rusted steel frame sections on pontoon trailers, often handled on the same visit as the boat.
Why Alpha Welding
You need someone who knows thin aluminum, not just someone with a welder in the truck.
Pontoon work is thin-wall aluminum welding. Partner welders bring spool guns and TIG setups suited to it, not steel stick rigs.
No hauling a 24-foot tritoon across town. Repairs happen at your lift, lake house, storage lot or marina, with the marina’s permission.
Send photos and we’ll tell you whether it looks like a repair, a patch or a tube replacement before a visit is booked.
Coverage from Houston-area ports and Gulf Coast bays to lakes in East Texas, the Hill Country and DFW, confirmed per address.
How it works
A simple process, so you know what happens at each step.
Call 979-250-7486 or use the form. Photos of the damage and where the boat sits help us quote accurately.
We review the damage, check partner availability near you and explain the price and any prep needed.
The partner welder confirms the leak, drains and cleans the chamber, then welds and reinforces where needed.
The repair is checked with low air pressure and soap solution, then cleaned up so you can get back out.
Practical guide
A few honest points about pontoon repairs before you book, based on what partner welders run into on Texas lakes and bays.
No. The damaged area has to be dry, clean and out of the water. Most owners raise the boat on a lift, pull it onto the trailer or have it set on stands at a marina. Water inside the chamber has to come out first, through a drain plug or a small hole that gets welded shut afterward. Welding against trapped moisture causes porosity, and a porous weld leaks again. If the boat lives on a lift, many repairs can be done right there once the tube is up and dried out.
Water in a tube does not always come in where the obvious damage is. A common method is to seal the chamber, add a very small amount of air pressure, usually just a couple of psi, and brush soapy water along seams, brackets and the keel. Bubbles show the leak. Too much pressure can bulge or split a tube, so this is not a job for a shop compressor at full output. Older boats often have more than one leak, so partners check the whole chamber.
Pontoons used on Clear Lake, Galveston Bay, Matagorda Bay, the Laguna Madre or around Port Aransas and Rockport wear differently from lake boats. Salt left on the tubes causes pitting, especially under brackets and anywhere dirt and moisture collect. Stainless bolts and steel trailer bunks touching bare aluminum can start galvanic corrosion. Pitted metal has to be ground back to sound aluminum before welding, and badly thinned spots get a doubler plate rather than a weld buildup. Partner welders around Houston and Corpus Christi see a lot of this. A freshwater rinse after every salt trip makes a real difference.
Send a few photos plus the boat’s length and year. We’ll tell you honestly whether a repair makes sense or the tube is past saving.
Service areas
Pontoon welding is coordinated through partner welders across Texas, so coverage depends on your exact address and the partner schedule. We confirm availability for every job, whether the boat sits at a coastal marina, a lake house lift or a storage lot. Urgent breakdown? See emergency welding.
FAQs
Straight answers to the questions we hear most from pontoon owners.
Yes. Most pontoon tubes are 5052 marine aluminum, which welds well when the metal is clean and dry. Cracks, pinholes, seam leaks and bracket failures are usually repaired with TIG or a MIG spool gun using 5356 filler, then checked with low air pressure and soapy water.
Alpha Mobile Welding TX coordinates partner welders across Texas, from Houston, Galveston Bay and Corpus Christi to Lake Conroe, Lake Travis and the DFW lakes. Call 979-250-7486 or send photos through the form, and we’ll confirm whether a partner can reach your address and when.
Common signs are a boat that lists to one side, sits low at the bow or stern, is slow to get up to speed, or drains water when you pull a tube plug. If one tube rides noticeably lower than the others after the boat sits a few days, it likely has water inside.
No. The repair area must be out of the water, dry and clean before welding. A boat lift, the trailer or blocks at a marina all work. Any water inside the chamber is drained first, because moisture causes porous welds that leak again.
It depends on the damage, how easy it is to reach, whether the chamber needs draining or foam removed, and travel to your location. A single pinhole costs far less than a torn nose cone or several cracked brackets. Send clear photos and we’ll give you an estimate first.
Repair is usually the better choice for cracks, small punctures, seam leaks and bracket damage. Replacement makes sense when the tube has heavy pitting over large areas, thin walls in many places or a long crushed section. If the boat is under warranty, check with the builder before any outside welding.
Yes. Partner welders handle pontoons used on Galveston Bay, Clear Lake, Matagorda Bay, Corpus Christi Bay and the Laguna Madre. Saltwater boats often need pitted areas ground back to sound metal, doubler plates added, and fasteners and trailer contact points checked for galvanic corrosion.
Yes, with care. Welding heat can melt or ignite foam, so foam near the repair is cut back first. If a tritoon carries its fuel tank in the center log, the tank and any vapor space are emptied and made safe before heat is applied. Tell us about either when you call.
Yes. Pontoon trailers often need bunk bracket repairs, cracked crossmembers, tongue repairs and rusted frame sections replaced, especially after saltwater use. Many owners get the trailer and the boat repaired on the same visit, since the boat is already sitting on it.
A single crack or pinhole is often done in a few hours on site, including draining, cleaning, welding and testing. Nose cone replacements, multiple brackets or large patches take longer. Scheduling depends on partner availability, and same-day visits are possible but never guaranteed.
Request an estimate
Tell us where the boat is and what’s wrong, attach a few photos, and we’ll reply with an estimate and partner availability near you.

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