Order as many floor samples as you like and we'll ship all samples to you for free! You may then return them, within six months, and receive a refund for all returned samples. Please note: We do not reimburse for return shipping costs.
An EPA approved, zero VOC, mold and mildew inhibitor for interior walls and ceilings
Caliwel Home and Office is a revolutionary, multi-patented, zero VOC, antimicrobial flat paint that effectively and responsibly resists the growth of mold, mildew, algae, fungi and odor causing bacteria. As a mold remediation tool, it will inhibit its re-growth for many years to come. As a superior surface treatment, it comes in white and looks just like a traditional architectural paint but cannot be color matched to other brands. It also guards against deterioration and discoloration caused by microorganisms.
Caliwel's unique award-winning formula has three separate EPA approvals which required 7 years of testing. Unlike most antimicrobial products that contain pesticides or other harmful VOCs, Caliwel has no biocides, zero VOCs and is virtually odorless. The EPA protocol is extremely stringent and validates each approval for safety and efficacy.
Caliwel utilizes as its active ingredient calcium hydroxide (hydrated lime), which is a highly alkaline naturally occurring mineral with the longest history of clean and effective use. It's an important component in pharmaceutical and dental products, supplements, as well as dairy, sugar and baking industries. (For more info about the benefits of hydrated lime, see side bar to right.) Caliwel's proprietary Bi-Neutralizing Agent (BNA) safely prolongs the neutralizing power of calcium hydroxide while resisting degradation long after it has been applied.
Caliwel Home and Office antimicrobial paint is a full substitute for conventional architectural latex paint. It is water-based, quick drying and easy to apply with a brush, roller or sprayer and takes effect immediately within minutes of application. Use on properly primed gypsum drywall, masonry/concrete, plaster, wood interior walls or spray foam insulation. It comes in a flat white color and covers 250 square feet per gallon. Two coats are recommended. Ideal for all interior residential, retail, healthcare, eldercare and educational facilities, manufacturing and warehouse facilities.
NOTE: Primer is required over new drywall, skimcoat, plaster, plywood, OSB, 2x4s, metal and when color difference is high. No primer is required over existing water-based interior similar color paint or existing Caliwel.
NOTE2: Caliwel protects your surfaces from mold. However, should you decide to paint over it in the future, Caliwel will also protect the substrate core beneath it. We recommend waiting at least 6 months before painting as some paint may react with the high pH in Caliwel. As always, please test first before application.
Caliwel also provides excellent fire resistance. It has a flame Spread Index (FSI): 0, Smoke Developed Index (SDI): 0 and Class I FSI 0 - 25. Caliwel BNA has been tested under Protocol: ASTM E84-99 “Standard Test Method for Surface Burning Characteristics of Building Material” NFPA 255, ANSI/UL 723 and UBC 8-1.
The growth of mold can be damaging to your building and your health. Whether you are building new or remodeling an old structure, removal of pathogens and preventing their return is of utmost concern. It can be very expensive to mitigate and remediate old surfaces, not to mention the cost of health care to those affected by pathogens. Caliwel with BNA is a proactive approach to creating and maintaining a cleaner indoor environment without the use of biocides, pesticides or toxic chemicals.
Caliwel also makes two other products: Caliwel Industrial Mold and Mildew Inhibitor for behind stud walls, crawl spaces and basements and Caliwel HVAC only for professionals to use inside HVAC ducts. Please call 800-405-0222 for more info.
Awards: Frost & Sullivan's 2005 Technology Innovation Award in the field of coatings and surface technologies. Building Magazine, 2002 Top 100 products.
At last, we've finally found a natural alternative that will not only mitigate your existing mold and mildew problems but will protect your home or office or warehouse for years to come. Unlike almost all mold killing products on the market from Microban to Tea Tree or Thyme oils to Concrobium, this product contains no VOCs, triclosan, pesticides or any strong odors. Now you don't have to worry that any potentially hazardous ingredients will leach out into your living space. Note: While this is a non-toxic product, it has a pH of 12.4 which should be applied with gloves and eye protection. Once it has dried, it will not react to your skin.
Features & benefits
Anti-microbial — zero VOC and virtually odorless; contains no biocides, fungicides or toxic ingredients
Versatile — use on almost any primed interior surface: drywall, painted surfaces, masonry/concrete, plaster and most wood. Previously painted surfaces with interior water-based paint or Caliwel need not be primed.
Prevents the growth of pathogens — utilizes calcium hydroxide which is a natural occuring mineral with a pH of 12.4; it naturally attacks mold, mildew, algae, fungi and odor-causing bacteria on any surface
Stain resistant — inhibits staining from algae and fungi
Fire retardant — non-flammable and with a flame spread = zero, smoke spread = 0 and Class I FSI 0-25
Long-lasting — unlike most products with hydrated lime that wear off quickly, this product incorporates Bi-Neutralizing Agent (BNA) which extends the power of hydrated lime for numerous years
Superior paint — Flat, architectural water-based latex paint; applies easily with a brush, roller or sprayer
State Nexus Fee may apply A state nexus fee will be applied to this item if drop shipped to the following states: . We're sorry for the inconvenience. Click here to read more about the state nexus fee.
Coverage (1 Coat)
250 SF per Gallon
Recommended # of Coats
@ 70 F, 50% RH: 15 minutes to the touch
Square Feet / Box
Thickness or Height
Veneer Cut Thickness
Boxes / Pallet
Square Feet / Pallet
Boards / Box
Pieces / Box
Weight / Box
Interior or Exterior
Use On Material
Concrete, Fiberboard, Gypsum, Plaster, Wood
May be applied over primed gypsum drywall, wood, plaster, fiberboard, cured masonry/concrete, wood or concrete subfloors. No primer needed over water-based interior paint or Caliwel.
Application temp: 45 F to 120 F
Do not shake. Stir gently before use.
Recommended mil thickness: 2 mills dry.
Recoat after 4 hours.
2 coats recommended over properly primed substrate.
May be applied over gypsum drywall, wood, OSB, plaster, fiberboard, cured masonry and metal. No primer needed over painted surfaces that use interior water-based paint or Caliwel.
Mold/Mildew On Surface – scrape/remove all loose material.
New Drywall - repair holes/cracks by patching with joint compound and sanding. Sweep and wipe with a clean damp rag to remove sanding dust. Prime, then apply 2 coats of Caliwel.
Masonry/Concrete –must cure for 30 days before coating. Remove form-release agents. Prime, then apply 2 coats of Caliwel.
Plaster – bare plaster must be cured and hard. Textured, soft, porous or powdery plaster should be treated with 1 pint household vinegar to 1 gallon of distilled water. Repeat until surface is hard. Rinse and allow to dry. Prime, then apply 2 coats of Caliwel.
Wood – sand exposed areas to a fresh surface. Fill nail holes and other surface damage with wood filler or putty. Sand smooth. Prime, then apply 2 coats of Caliwel.
Previously Painted Surfaces – remove all loose paint, dirt, chalk and damaged substrate. Clean thoroughly to remove wax, grease and/or oil residue. Scuff-sand glossy surfaces. Wipe with a clean damp rag to remove sanding dust. Stains from water, smoke, grease, ink, etc. must be sealed with a suitable stain-blocking primer. If applying over oil-based or exterior paint, Prime, then apply 2 coats of Caliwel. However, if applying over water-based interior paint, no primer is necessary. We recommend ECOS Universal Primer.
Do not mix with tap water or add paint or paint thinners. Such action may adversely impact biocidal properties.
Brushing - 5% max
Rolling - 5% max
Spraying - 10% max
Product is best applied with airless sprayer.
Avoid use of sponge roller or sponge brush.
Due to rapid dry time of coating, only small areas should be brushed or rolled.
Caution: when spraying, always wear goggles and high-efficiency particulate respirator.
Clean up: Water immediately after use
Maintenance: Wait at least four weeks after application before washing. May be cleaned with water and soft cloth or sponge, mild household general cleaning solution.
Surface or Product Preparation
Appearance When Dry
Cleans Up With
Store in cool dry place out of sunlight
Recycling or Disposal
Finish Contains Aluminum Oxide?
Floor Item Type
Janka Hardness Rating
Number of Plys
Range of Resistance
Risk in Dry Climates
Shade (1 Light) - (7 Dark)
Strips / Plank
Surface Treatment Color
Touch Up Kit
Can be indoor?
Can be outdoor?
Max Gallons Per Minute
Max BTU's / Hour
- BTU's / Hour
Multi Control Capabilities
Temperature Range (with remote)
Color Rendering Index (CRI)
Caliwel Home and Office performs just like a name brand standard architectural paint. It is zero VOC and very low odor when wet which dissipates within a day.
It comes in a white color. Unfortunately, we cannot color match to other major brands.
Questions & Answers
Green Building Supplies:
Area of room (sq ft):.
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