Frequently Asked Questions
From owners, and from the shops running units at volume.
For Fleets & Shops
How many units can a crew do in a day?
Spray time is short — a towable roof is under an hour of actual application. Prep is the constraint. A crew running a wash-and-strip station in parallel with the spray bay can move two to three towables a day. Class A coaches with multiple slides and heavy roof equipment are generally a two-day unit including prep.
Does this affect the manufacturer warranty on a newer unit?
Coating a roof is an aftermarket modification and how a given manufacturer treats it varies. On in-warranty units, check the specific coverage language first. In practice most of this work happens on units past the roof warranty period, or on trade-ins and rental inventory where it is a reconditioning decision rather than a warranty question.
Can you build a quotable scope by coach class?
Yes — that is what most dealers and fleets ask for first. Send us your unit mix and we will put together a scope, material takeoff, and DFT schedule per class that a service writer can price consistently.
Do you help shops that want to bring this in-house?
Yes. If you already run plural-component equipment we supply material, parts, and spec support. If you are adding the capability, we help with proportioner and hose selection, training, and working through the first several units. We would rather your first ten jobs go well than sell you a pallet and disappear.
Performance & Materials
Does it work on every roof material?
Yes — EPDM, TPO, fiberglass, and aluminum all take the system. What changes is prep. EPDM needs the most cleaning because of the plasticizer it sheds; TPO needs the primer most because it is slick; fiberglass needs scuffing to kill gloss and remove mold-release wax; aluminum needs degreasing and attention at rivet lines.
What happens in extreme heat or cold?
Service range is −40°F to 250°F. A black roof in Arizona in August and a stored coach in a Minnesota February are both inside it. The membrane does not soften and track dirt in summer heat and does not go glassy and crack under winter deck flex — the two failure modes that catch rigid roof coatings.
What about hail?
A 60-mil elastomeric membrane at 300–400% elongation absorbs impact instead of fracturing. Hail may dent the substrate; the membrane stretches over the deformation and stays watertight. This is a meaningful difference from acrylic and asphaltic products, which crack at the dent perimeter.
Does it help at resale or trade-in?
Water intrusion is the largest single destroyer of RV value, and a documented seamless roof and seam seal is a real line item on an appraisal. It is also a straightforward selling point on a used unit, because the buyer's first question about any coach older than five years is whether the roof has been maintained.
Scope & Limits
Do I need to do the whole unit or just the roof?
The roof and all its penetrations is the core scope and where most of the leaks are. Caps, slide rails, bays, and chassis are additional scope with real value — cap seams in particular are a top-three leak source and are often the actual culprit when a "roof leak" gets diagnosed properly. We will price it either way.
Can you coat a unit that already has water damage?
Only after the damage is addressed. Sealing over saturated laminate traps moisture inside where the rot continues. If the panels are firm and the moisture meter reads dry, seal it now. If the wall is soft or delaminated, that section has to be rebuilt first — we will tell you honestly which one you are looking at.
Can I roll this on myself?
No. Alasta Seal is a plural-component material requiring a proportioner with a heated hose — Graco Reactor E-20/E-30 class or equivalent. For owners without a rig, we can refer an applicator or a mobile tech in your area.
How much material does a unit take?
One gallon yields 1,604 mil-sq-ft. A 200 sq ft travel trailer roof runs about 7–8 gallons of field material at 50 mil; a 340 sq ft Class A roof runs 12–14. Detail build at flanges, seams, and caps adds on top of that. Send us the unit list and we will do the takeoff.
Question About Your Fleet or Your Unit?
Ask us. Someone who has sprayed these will answer, and they will tell you when the answer is no.
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