Description
Moisture doesn’t just wreck flooring — it feeds things. Mold, mildew, and odor-causing bacteria all start the same way: water in the pores of a concrete slab. Bone Dry Plus attacks the problem from both ends. It’s the same permanent penetrating seal as Bone Dry Original — a chemical vapor barrier that stops moisture from ever surfacing — with antimicrobial technology built directly into the formula. The result: nothing to drink, and a hostile neighborhood for anything that tries to grow anyway.
Tap to enlarge
The culture test: unsealed vs. sealed with Plus
Under unsealed slab conditions, moisture gets in and growth follows. Sealed with Bone Dry Plus, moisture is kept out and antimicrobial protection sits in the pores — no takers. (Illustrative — Plus prevents mold, mildew, and odor-causing bacteria in the pores of the slab.)
Same seal, second weapon
Plus is Bone Dry Original with advanced antimicrobial additives mixed into the product. The sealer penetrates, solidifies in the pores below the surface, and permanently blocks moisture vapor — while the antimicrobial formula prevents the growth of mold, mildew, and odor-causing bacteria inside those same pores. It keeps working for the life of the seal, so surfaces stay cleaner between cleanings, and any surface mold that does land wipes off easily instead of rooting in.
What it does for the slab
| Function | What it means for the space |
|---|---|
| FIGHTS | Antimicrobial technology built in — prevents mold, mildew, and odor-causing bacteria in the pores |
| SEALS | Permanent chemical vapor barrier — moisture never reaches the surface |
| STAYS CLEAN | Cleaner between cleanings; surface mold removes easily |
| DENSIFIES | Reacts with free lime for a harder, denser, more durable slab |
| ENDURES | Freeze-thaw protection in colder climates; extends the life of the slab |
Growth needs all three legs
Tap to enlarge
Growth stands on three legs
Microbial growth needs moisture, food, and time. The seal removes the moisture leg — and the built-in antimicrobial patrols the pores to handle whatever tries anyway.
Microbial growth in a slab needs moisture, a food source, and time. Take away the moisture and the whole thing tips over — that’s the seal’s job. The antimicrobial additives are the insurance policy: built into the sealer and working continuously against anything that tries to establish itself anyway. That double action is why mold, mildew, allergy irritation, and the musty odors they cause never get started.
Original or Plus?
| Bone Dry Original | Bone Dry Plus | |
|---|---|---|
| Waterproofing | Permanent penetrating seal | The same permanent seal |
| Antimicrobial additives | — | Built in — keeps working |
| Best for | Most slabs, garages, general sealing | Basements with moisture problems; healthcare, food production, and other hygiene-critical spaces |
| Coverage | 200–250 / 300–350 / 350–450 sq ft per gal by finish | The same: 200–250 / 300–350 / 350–450 sq ft per gal by finish |
Sealing a large commercial pour and want cure + seal in one step with a warranty program? That’s Bone Dry Pro.
Works under everything
| Flooring system | Examples |
|---|---|
| Adhered | Hardwood, vinyl, tile, broadloom carpet, carpet tile, sheet goods, luxury vinyl, VCT |
| Floating | Engineered hardwood, laminate, luxury vinyl, wood |
| Resinous coatings | Epoxy, urethane, polyaspartic, polyurea, PMMA and other resin systems — profile the concrete to CSP 3, apply Plus, then the coating; no cement-based top coating is required under resin systems |
| Paints | Floor, wall, acrylic, epoxy, and masonry paints |
Where hygiene is spec’d
Tap to enlarge
Where hygiene is spec’d
Hospitals, restaurants, food plants, distribution facilities, and basements — healthier indoor environments with Bone Dry Plus.
Plus is the family’s answer wherever organic growth carries a real cost: hospitals and clinics, restaurants, food manufacturing plants, distribution centers — and the humble mold-prone basement, which is exactly what the product was tagged for. Same slab protection everywhere; healthier air on top of it.
Application
Tap to enlarge
Application steps
- Prep — clean, porous surface; on remodels, mechanically profile prior coatings to CSP 2.
- Spray — pump or battery sprayer with a wide fan tip; one coat until the slab looks wet to slightly cloudy, then within 10 minutes a second coat only where the first penetrated.
- Dry — 18–24 hours before finished flooring; vacuum or hand-scrape any loose particles once dry.
Quick Dry option: flooring in 6 hours. Indoors or out, new pour or existing slab — one pail, one sprayer.
Good to know: apply one coat with a pump or battery sprayer and a wide fan tip (a squeegee or heavy-nap roller at the edges), indoors or out, on new or existing concrete, until the slab looks wet to slightly cloudy. After completing a section, let it sit no more than 10 minutes, then apply a second coat only where the sealer has penetrated and the concrete texture is visible again. At the pour, once the surface is hard enough to walk on without indentations, one coat at 50% overlap is all that is required. Allow 18–24 hours of drying before finished flooring goes down — or 6 hours with Quick Dry. Once dry the slab may look cloudy where product has solidified on the surface; remove any loose particles with a vacuum or hand scraper before finished flooring goes down. On remodels, existing concrete with prior surface coatings must be mechanically profiled to a minimum CSP 2; slabs with known moisture issues or over 10 years old must then receive a cement-based top coating. Floor leveling and skim coating must be completed before the sealer is applied. Mask cabinetry, glass, finished metal and painted surfaces with plastic up to 2 feet from the concrete; overspray can be removed with concentrated vinegar. Like all Bone Dry sealers, Plus is slightly corrosive — goggles or a face shield, rubber or plastic gloves, and a NIOSH-approved respirator in confined areas.
Technical data
| Type | Permanent penetrating concrete sealer and densifier, water-based |
| Antimicrobial | Built into the formula — mold, mildew, odor-causing bacteria |
| Coverage | 200–250 sq ft/gal broom-troweled · 300–350 mechanically troweled · 350–450 burnished/polished opened with Etch-a-Crete |
| Dry time | 18–24 hours before finished flooring; 6 hours with the Quick Dry option |
| Appearance | Concrete looks unchanged after application |
| Use | Interior and exterior; new and existing slabs — slab on grade, slab on deck, garages, driveways, patios, basements |
| Limitations | Not for existing decorative exposed aggregate or stained concrete (discoloration may occur). Leveling products must be cement-based, minimum 4,000 psi at 28 days; Gyp-Crete is prohibited with this product |
| Storage | Above freezing and below 90°F; shelf life 2 years |
| Standards | Complies with ASTM C156-17 (Water Loss), ASTM C39/C39M-18 (Compressive Strength of Cylindrical Concrete Specimens) and ASTM C1202-19 (Electrical Indication of Concrete’s Ability to Resist Chloride Ion Penetration) |
| Aftercare | Allow 18–24 hours (6 with Quick Dry); remove loose particles with a vacuum or hand scraper before finished flooring goes down |
| Safety | Slightly corrosive — goggles or face shield, gloves; NIOSH respirator in confined areas; see SDS |
Musty basement? Hygiene-critical floor? Send us the square footage and we’ll size the order — call 262-694-9748 or email info@bonedryproducts.com.




















