Waterproof Trailer
A trailer roof leak never ruins the trailer first — it ruins what you were hauling. HaulTight seals roofs, seams, decks, and floors under one flexible membrane, from a single weekend trailer to a hundred-unit fleet.
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Complete Water Barrier
Seamless waterproof membrane technology seals cracks, seams, and penetrations to keep moisture out.
Flexible & Durable
Moves with substrate expansion and contraction without cracking or peeling, even in extreme temperature swings.
RV, Camper & Trailer Ready
Specially formulated for mobile applications where vibration and flex demand superior adhesion and elasticity.
UV Stable Finish
Stays watertight and color-stable through years of direct sun exposure.
What We Keep Dry
Engineered for demanding real-world conditions across a wide range of applications.
- RV & camper roofs
- Cargo & utility trailers
- Flat & low-slope roofs
- Foundations & basements
- Planters & ponds
- Seams, joints & flashings
Waterproofing That Lasts
Professional-grade formulation backed by decades of coatings experience.
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Tell us about your project and we will follow up with product details, technical data sheets, and pricing.
Frequently Asked Questions
Trailer Questions, Answered
Can my yard crew apply this, or do we need a contractor?
Your crew can. The product is single-component and the spec is two pages: prep, seams at double build, two field coats. If a person can paint a gate, they can seal a trailer roof. Contractors make sense for fleets over ~50 units on a deadline, and we can price it either way.
The roof already has surface rust at the seams. Coat over it?
Wire-brush loose scale, degrease, and spot-prime the bare spots first — then yes. The membrane seals oxygen and water away from the steel, which stops rust from progressing. What you cannot do is coat over flaking rust; it will take the coating with it.
What about my horse trailer floor?
Coat the underside of wood floors (or the top of steel floors, under the mats) after a thorough wash and full drying. Seal the end grain hard — that is where urine and washdown water enter. Give it 48 hours before animals load. Combined with roof sealing, it addresses the two failures that scrap horse trailers.
How much for a 7x16 enclosed trailer?
Roof is ~112 sq ft: at 80 sq ft/gal and two coats plus seam detail, that is 3–3.5 gallons. Add a gallon if you are doing the ramp-door seams and fender tops. We will do exact math from your dimensions.
How soon can the trailer work again?
Rain-safe in 4 hours, towable in 24, deck load-ready in 48. Full cure at 7 days — schedule coating at the start of a unit's down week and it costs you zero service days.
Can we coat trailers in the winter shop?
Yes — that is the ideal fleet schedule. Keep the shop at 50°F+, make sure the roof is dry and frost-free, and cure times run close to normal. Outdoor winter application is a no: frost, dew, and sub-50°F cure stalls all work against the bond.