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.
High performance, one-step, non-toxic wood stain-sealer
Cold Weather Alert:
This product may not perform properly if applied below the required temperature. Please check installation instructions on our website.
Because this is a water-based product, it may freeze during shipping. For that reason we will not ship over a weekend if temperatures dip below 32 degrees F. If you want us to ship anyway, it will be at your own risk. Please call to arrange with a GBS eco-advisor. 800-405-0222
Vermont Natural Coatings Exterior Penetrating Stain with PolyWhey technology is a low-odor, durable, element-repelling, semi-transparent stain and topcoat for the outside of raised garden beds, wood siding, decks, fences, furniture, and other outdoor wood surfaces. It may be used on new, pressure-treated and weathered wood (pressure treated wood should sit for 6 mo to a year before application).
NOTE: Image swatches on our website are on Pine. If you have a different specie of wood, the appearance may be different. Please order a sample to confirm the actual appearance on your wood.
The natural strength of whey protein makes Vermont Natural Coatings Exterior Penetrating Stain a protective, environmentally safe finish for all exterior wood applications. It is non-toxic, has low odor and contains no biocides, fungicides or anti-microbial agents. The pigments act as a natural UV inhibitor.
By using recycled whey protein, Vermont Natural Coatings eliminates the need for heavy metal driers, toxic co-binders and carcinogenic solvents typically found in wood finishes. The whey used in this product is a natural by-product of the cheese-making process used by Vermont farmers. It surpasses every national, regional, state and county air quality regulation.
NOTE2: This product requires a wet on damp two-coat application. This means apply the second coat while still damp, but BEFORE it dries. If you wait too long and the first coat dries, you will not be able to apply the second coat—it will just bead up. How long you wait in between coats depends heavily on temperature, humidity and wind conditions. If it's windy and >80 degrees it will dry in a few minutes so you will need to work faster and in smaller areas 3' x 3' at a time before moving to the next section. Best practices require application in shade and during cooler part of the day. Cooler damp conditions mean it will dry more slowly and you will have more time in between coats.
NOTE3: Not recommended for use over super dense woods such as Teak, Ipe or Garapa/Brazilian Ash.
NOTE 4: It's the pigments in the different colors that block UV rays and protect the wood much longer. Using the Caspian Clear will not hold up as long.
NOTE 5: Can be applied over oil-based stain or finish, as well as other water-based finishes. HOWEVER, the product can only be applied over other finishes that have been sanded. The Exterior Penetrating stain NEEDS to be able to penetrate the wood, which it can do IF an old finish has been sanded, but cannot if the film build of the original finish remains.
Apply with brush, paint pad, or spray. Under normal conditions treated wood will be fully cured in 48 hours. One gallon will cover approximately 200 sq. ft on rough sawn-400 sq. ft. on smooth wood depending on porosity of wood. Colors include: Caspian Clear, Autumn Red, Lakeside Cedar, Acorn Brown, Sterling Gray, Royal Cherry, Balsam Green, Bison Brown, Brackish Brown, Golden Cedar, Coastal Gray and Granite Gray.
We've tested dozens of exterior sealers over the past 20 years to find one that will hold up to Iowa weather; hot/damp in summer and cold/dry in winter. We've been selling oil based products for exterior use only because we have not felt confident that a water-based product would perform well — until now. Vermont's Exterior Stain/Sealer holds up under intense direct sun, lots of rain, snow and anything Mother Nature can throw at it. While no stain/sealer will hold up forever under these conditions, this is the best non-toxic product we have found so far.
Features & benefits
Easy-To-Use — paint pad, brush or spray; soap and water cleanup
One-Step application — provides color and water-proof barrier all in one
Versatile — use indoors or outdoors on new, pressure treated or weathered wood surfaces such as decks, furniture, siding, railings, etc.
Long-lasting — durable coating protects against UV rays
Very low-odor — non-offensive to installer and occupant
Non-toxic — very low VOC 45 g/L; no solvents, dyes, biocides or fungicides
Eco-friendly — made from renewable resources, biodegradable
Dries quickly — in less than two hours and cures completely in 48 hours
Alert: Do not freeze. Do not thin.
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)
1-Quart = 50-100 SF 1-Gallon = 200-400 SF 5-Gallon = 1,000-2,000 SF
Recommended # of Coats
Under 2 Hours, allow 48 hours without precipitation for curing.
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
Any new, pressure treated or weathered wood. Can be applied over oil-based stain or finish, as well as other water-based finishes. NOTE: The product can be applied over other finishes that have been sanded. The Exterior Penetrating stain NEEDS to be able to penetrate the wood, which it can do IF an old finish has been sanded, but cannot if the film build of the original finish remains.
Indoor Environmental Quality/4.2 Low-Emitting Material/ Paints and Coatings: 1 point, Materials & Resources/5 Regional Materials: 1 to 2 points, Materials & Resources/6 Rapidly Renewable Materials: 1 point, MR Credit 5 - Regional Materials
LEED® Regional Materials Zip Code
Meets or exceeds California South Coast Air Quality Management District (SCAQMD) requirements
Country of Manufacture
Use With These Prodcuts
Number of Colors
Critical Radiant Flux
Face or Pile Weight
Pile Height (High)
Pile Height (Low)
Resistance to Insect Pests
Stitches Per Inch
Surface Texture, Construction, Style
Tufts per Sq. In.
Tufts / Sq In
Bundles per Pallet
Bundles per Square 6" Exposure
Bundles per Square 7" Exposure
Bundles per Square 7-1/2" Exposure
Bundles per Square 8" Exposure
Pounds per Bundle
Pounds per Pallet
Pounds per Roll
Pounds per Square
Pounds per Square 6" Exposure
Pounds per Square 7" Exposure
Pounds per Square 7-1/2" Exposure
Pounds per Square 8" Exposure
Lin Feet per Bundle
Lin Feet per Pallet
Rolls per Pallet
Squares per Roll
Tiles per bundle
Tiles per Lin Foot
Natural Whey Protein (By-Product of Cheese Making Process)
brush, paint pad, roller, spray, T-Bar Applicator
Application Temperature Range
Surface Preparation: Hammer down any raised nails. Sand with the grain to completely remove old finishes. Be sure surface is thoroughly cleaned and dried. Do not apply if precipitation is expected within 48 hours. Warning! If you scrape, sand, or remove old paint, you may release lead dust. LEAD IS TOXIC. EXPOSURE TO LEAD DUST CAN CAUSE SERIOUS ILLNESS, SUCH AS BRAIN DAMAGE, ESPECIALLY IN CHILDREN. PREGNANT WOMEN SHOULD ALSO AVOID EXPOSURE. Wear a NIOSH-approved respirator to control lead exposure. Clean up carefully with a HEPA vacuum and a wet mop. Before you start, find out how to protect yourself and your family by contacting the National Lead Information Hotline at 1-800-424-LEAD or log onto www.epa.gov/lead. Application: 1) Stir thoroughly prior to use. Do not thin. 2) Test the stain on a sample piece of wood or less visible area of surface to be finished. 3) Apply with brush, paint pad, foam brush or spray. DO NOT THIN : Thinning will result in reduced product performance. Apply an even coat with the grain. Maintain a wet edge. Coat the end grain of all exposed boards. 4) Two coats are recommended. Apply second coat in one hour in normal conditions. Do not sand between coats. 5) Apply when air and surface temperatures are between 50°-80°F and relative air humidity of 40%-60%. Drying/Curing: Under normal conditions treated wood will be fully cured in 48 hours. One gallon will cover approximately 200-400 sq. ft. depending on porosity of wood. Cleanup and Storage: Wipe excess stain from lip of container with a clean cloth prior to sealing. Brushes and other equipment can be cleaned with warm water.
Surface or Product Preparation
Appearance When Dry
Cleans Up With
Store in cool dry place out of sunlight
Recycling or Disposal
Dispose of excess product in accordance with all local state and federal regulations