Serious waterproofing that doesn’t shout.
The same flexible elastomeric membrane in a clean, neutral gray that complements most exteriors and hides everyday dirt.
- Bridges hairline cracks, moves with the substrate
- UV- and weather-resistant
- Withstands rain and temporary standing water
- Strong adhesion to prepared concrete and masonry
- Clean, neutral gray finish that hides everyday dirt
- Water cleanup, low odor
Rubberseal Gray is a water-based, low-VOC elastomeric waterproof coating that cures into a flexible, seamless membrane with a clean, neutral gray finish. One of our most popular products, it protects roofs and exterior surfaces from water and weather with a finish that complements most exteriors and hides everyday dirt well.
Where to use: Roofs (including RV and mobile-home roofs), exterior walls, balconies and terraces, and other exterior surfaces where a durable, neutral-toned finish is desired.
For ponds, pools, or anywhere water stands, use Rubberseal Black — our strongest, true-waterproofing membrane.
Coverage: about 32 sq ft per gallon at 40 mils (thin decorative coats about 130–150 sq ft per gallon).




oops_all_coating –
Jobsite note
Mixed easily with a paddle. Good visual coverage. Used brush at terminations, roller in field.
RoofRookie –
Lid fought me
Opening the pail without mangling the rim was harder than applying the product. Once inside, everything was fine. Mixed well, spread evenly, and dried to the gray I wanted.
Priya S. –
Needed a mixing paddle
A hand stir wasn’t cutting it for the large pail. Proper paddle mixing produced consistent texture and color quickly. After that, application was uneventful—in a good way.
Dev C. –
Cold morning, long afternoon
Started when the surface was colder than ideal and progress was sluggish. Once conditions improved, the material handled more predictably. Read the weather, not just the calendar.
Vik S. –
Good visual match around masonry
Applied beside gray block and the transition is pleasantly quiet. I appreciate a waterproof coating that doesn’t make the repaired section the focal point.
Bucket Enjoyer –
Small commercial maintenance job
We used it on a non-traffic roof detail behind a storefront. The neutral color and cold application suited a location where disruption needed to stay low.
WeekendPatch –
Kinda expensive
Used more on rough block than expected. Result is good, wallet noticed.
Keiko –
Better second coat
First coat made me nervous. Second coat made the whole surface look deliberate and complete.
Sam T. –
3 stars for the lid
Why are pail lids always a wrestling match? Coating gets five.
PailOpener –
Better than black for us
Doesn’t stand out beside the concrete.
xXRoofFixerXx –
Patio planter
Clean gray finish. Wife approves, which was the real specification.
LadderLunch –
Wind deposited souvenirs
Applied on a breezy spring day and ended up picking pollen and tiny leaves out of the wet surface. Not the manufacturer’s fault, but a real-world issue. Choose a calm day for a visible area.
RollWithIt –
Brush marks remained in one area
Where I overworked the material with a brush, some texture remained. The rolled sections leveled more evenly. Performance seems fine; this is mainly a cosmetic observation.
Gabriel T. –
Roller marks
Mine has some texture. Probably overworked it. Still looks decent from normal distance.
Anonymous –
More material on textured concrete
Happy with how it looks, less happy with the extra order. Our concrete was very rough and used substantially more coating than the smooth-surface estimate I had in mind. Account for texture.
J. Okafor –
Comfortable DIY scale
Coated a small equipment-pad surround. I’m not especially experienced, but dividing it into sections and tracking how much material I used kept the application under control.
MudRoomMike –
More please
Good but I needed another gallon.
raincheck –
Would recommend with caveats
Prepare carefully, calculate for your actual texture, and don’t apply in bad weather. Do those three things and it’s a very approachable system.
Definitely Not Handy –
Slow and steady on the slope
I poured too much at once on the first sloped section and had to chase it with the roller. Smaller amounts gave much better control. Once I adjusted, the rest went smoothly.
RV_Tinkerer –
Gray blends with concrete
Used it on a concrete planter after completing the necessary repairs. The neutral gray looks far less conspicuous than black would have. Corners needed a brush; broad areas were easy with a roller.
Caleb D. –
Helpful phone support
Had a basic question about my surface and got a patient answer. Project went smoothly after that.
Jo Park –
Good finish after correcting my prep
One edge lifted in a dusty test patch. I cleaned the rest much more aggressively and had no repeat problem. The lesson was obvious: gray coating cannot compensate for gray dust.
Mei W. –
Bird walked in it
One tiny set of footprints. Not included in the product photos. Pick a quieter work area.
DIY Homeowner –
Helpful on a visible utility roof
We can see this roof from a bedroom window, so appearance mattered. Gray looks professional and doesn’t shout “repair.” The seamless finish is a major improvement over the old patchwork.
Noor A. –
Went on chunky at first
I hadn’t mixed the bottom well. Once properly stirred, the consistency became uniform.
A Human With A Roller –
Gray hides dust better
White would show every speck on our rural property. Gray stays presentable while still making cracks and missed spots visible during application. Practical choice.