Frequently Asked Questions

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Application

Common Questions

Seal-Once

Poly Blend

Poly Blend Tints

100% Polyurethane


APPLICATION QUESTIONS

General Application Questions

Can Seal-Once, Poly Blend, or Polyurethane be used in interior as well as exterior applications?
Yes.
How do I know if water is penetrating a substrate or surface?
A simple experiment can be done to test for water penetration. Spill some water on the surface.  If the water soaks into the material then you will know that the material is too porous and needs to be sealed or needs additional applications of a sealer.  If the water pools, puddles, or runs off the material then you know that the surface is not porous and you will need to either remove an existing coating or properly clean the surface.
What is the application procedure for each product?
Select the technical data sheet link in the technical information tabs at the bottom of each product page for the application information of each product.
How do I blend the tint in with Seal-Once or Poly Blend, are special tools required?
Pour the contents of the tint bottle, one bottle per gallon of product and stir with a paint stick until fully blended.  After pouring out the contents of the bottle, you may need to partially fill the bottle with Seal-Once or Poly Blend and shake until all the tint has been blended.
What temperatures Seal-Once, Poly Blend and Polyurethane can be applied in?
Seal-Once and Poly Blend are too thin for a roller to apply enough product to saturate the surface and the roller cover absorbs more product than it applies.
Why did my pump sprayer stop applying Seal-Once or Poly Blend and how can I prevent it from happening?
Excess solids or pigment can form at the bottom of the container which can clog the tip of the sprayer.  Use a larger tip size, .017-019 is recommended, and strain the product using a paint strainer, cheese cloth, or fabric window screen before filling the sprayer reservoir.
Why did my pump sprayer stop applying Seal-Once or Poly Blend and how can I prevent it from happening?
Excess solids or pigment can form at the bottom of the container which can clog the tip of the sprayer.  Use a larger tip size, .017-019 is recommended, and strain the product using a paint strainer, cheese cloth, or fabric window screen before filling the sprayer reservoir.
Can you use a stain pad for any of your products?
Yes.
Does tinted Seal-Once or Poly Blend leave dark or overlap marks?
No, not when applied properly according to directions with two coats wet on damp.  The second coat blends the tint color evenly.
Why does it seem like I am getting less than a 150 sq. ft. per Seal-Once gallon at two coats?
There are many conditions that can affect coverage such as the surface is very porous and an additional third coat of Seal-Once and Poly Blend is needed, too much product is applied to the surface and is not being spread out enough, or there is too much loss of product by over spray.
Do you recommend covering all materials and surfaces not being sealed?
Yes and it is best to remove overspray while still wet.
How can you remove Seal-Once or Poly Blend tint that gets on vinyl or other types of plastic?
You can use TSW (This Stuff Works) or Goof-off to remove Seal-Once and Poly Blend Tint off vinyl and other plastics. Follow the written instructions and precautions on the product labels.
What kind of surface preparation is required to reapply your products?
Ensure all surfaces are properly cleaned using a mild cleaning solution of 1 gallon of warm water, 14 oz. bleach, and 1 oz. of dawn dish detergent. Apply cleaning solution with a sprayer and allow to rest for twenty to thirty minutes before rinsing with water using a garden hose with a nozzle.

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Seal-Once Application Questions

How long does wood need to dry before Seal-Once can be applied to it?
Wood can be damp but not wet.  If a surface is dry to the touch, you can apply Seal-Once to it.
Can Seal-Once be applied to damp wood surfaces?
Seal-Once can be applied to damp wood surfaces but not wet surfaces.
Do I need to dampen the surface before I apply Seal-once and when is it necessary to dampen the surface?
You can dampen the surface before applying Seal-Once but it is only recommended in hot, dry conditions and in areas of direct sunlight.
Can I apply Seal-Once over water?
Yes, please select the following link for a toxicity summary:    Seal-Once Toxicity Summary
Why do I need to apply a second coat of Seal-Once?
To ensure that all pores of a material are properly sealed.
How long do I wait before applying the second coat?
As soon as the first coat is damp but not wet or dry to the touch.  It is recommended that the second coat be applied before the first coat dries.
Can I still apply a second coat of Seal-Once after the first coat has dried even if it is a day or two later?
Yes.
Why do I need to apply Seal-Once wet-on-damp if I can apply a second coat of Seal-Once after the first coat has dried?
To maximize adhesion between the two coats, but even if you wait too long to apply the second coat, Seal-Once will still bond to the material and you will not have the typical adhesion problems many coatings on the market would have.
How can I coat my entire deck or dock if I have to apply a second coat before the first coat dries?
Apply the second coat when the first coat is dry to the touch.
Can I apply other products over Seal-Once?
Yes, Seal-Once works very well as a primer for any film forming product such as opaque stains, paints, semi-transparent stains, etc that do not penetrate.
Can Seal-Once be applied to raised garden beds?
Seal-Once can be applied to exterior wood surfaces above ground on raised garden beds but not to the interior or the bottom wood surfaces where the wood comes in direct contact with the ground. Seal-Once cannot be applied in below grade applications. We recommend lining the interior boards with plastic and resting the raised planter beds on plastic.

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Seal-Once Poly Blend Application Questions

Can I apply Poly Blend over existing tinted Seal-Once?
Yes.
How long do I wait before applying the second coat of Poly Blend?
One to two hours.
Can I apply another coat of Poly Blend after it has dried more than two hours?
Yes.
Why do I need to apply Poly Blend in one to two hours if I can reapply after two hours?
To maximize adhesion between the two coats.

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100% Polyurethane Application Questions

Do I apply the Polyurethane in heavy or light coats?
Apply the Polyurethane in thin, light coats.
How long do I wait before applying the second coat of polyurethane?
One to two hours.
Can I apply another coat of Polyurethane after it has dried more than two hours?
Yes.
Do I need to sand between coats of polyurethane?
No, unless the polyurethane has been allowed to cure more than 24 hours then a light sanding with 220 grit is recommended.

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COMMON QUESTIONS

How long have your products been on the market?
Seal-Once products first appeared on the market in 2005, the Poly Blend product was released in 2014, and the polyurethane products were also released in 2014.
What is the difference between Seal-Once, Poly Blend, and Polyurethane?
Seal-Once is a penetrating waterproofer which does not form a film on the surface. Poly Blend contains 65% Seal-Once which will provide the same waterproof protection as 100% Seal-Once and contains 35% polyurethane which enhances the durability and weatherability of the Poly Blend tints. The Poly Blend also forms a slight film giving the material a slight matte finish. The 100% polyurethane forms a thicker film than the Poly Blend providing greater surface protection and is available in a Satin and Low Gloss finish.
Which product should I use to get the best possible protection?
It largely depends upon each unique application situation. For typical exterior wood applications the Poly Blend provides the best protection against water penetration and tint durability. Seal-Once provides the best protection against water penetration where the surface is allowed to age naturally in many different types of porous materials. In wood or concrete applications the polyurethane provides the best protection against surface abrasion.
Does Seal-Once and Poly Blend come tinted or do I need to add the tint myself?
Tints are sold separately and added to the Seal-Once or Poly Blend products in a one bottle per gallon ratio.
How long before your products fully cures?
All Seal-Once products, the Poly Blend product, and all the Polyurethane products fully cure in 24 hours.
How long do your products need to cure before it rains?
At least 12 hours is recommend for Seal-Once. Poly Blend and Polyurethane should fully cure before it rains.
Can your products freeze and can they freeze multiple times?
All Seal-Once products, the Poly Blend product, and all polyurethane products can go through up to 3 freeze-thaw cycles.
What does 'proprietary ingredients' mean?
Propriety ingredients means the ingredients are a trade secret.

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SEAL-ONCE QUESTIONS

General Seal-Once Questions

What is the difference between the Seal-Once products?
Yes, select the following link for more information: Seal-Once Retail SDS
Is Seal-Once a silicone, latex, or acrylic?
Seal-Once Is not a silicone, latex, or an acrylic. Seal-Once is a penetrating complex co-polymer.
How does Seal-Once provide such great protection?
Seal-Once is made from environmentally stable and safe polymers that are 100 times smaller than a micron, roughly equivalent to a fraction of a millionth of an inch. When applied to a porous surface, Seal-Once penetrates the external surface deeper than other products on the market, sealing and protecting the material for a longer period of time.
Does Seal-Once have a warranty and what does it specifically cover?
Seal-Once is warrantied against water ingress for six years on horizontal surfaces and ten years on vertical surfaces.
Does Seal-Once form a film?
No, it is a penetrating waterproofer.
Why is the water not beading up on my Seal-Once treated surface?
Beading indicates the applied product is coating the surface and susceptible to weathering, abrasion, and UV light. Seal-Once penetrates into the substrate becoming part of the molecular structure of the material leaving the surface of the material exposed. Water will “wet” the exposed surface but will not penetrate into the material causing the water to “sheet” on the surface and not “bead”.
Does Seal-Once change the appearance of surfaces?
No.
How deeply does Seal-Once penetrate?
It depends on the condition of the surface. Age, porosity, previous treatments, cracks, rough or smooth surfaces, etc. all affect how deeply Seal-Once penetrates.
Does the clear Seal-Once provide UV protection, will it eventually break down in the sun?
Clear Seal-Once is UV stable which means it will not degrade in UV radiation, but clear Seal-Once does not provide UV protection. Without adding a tint, Seal-Once is a penetrating sealer which allows the exposed surface to age naturally, all wood surfaces will turn to a patina gray.
Is Seal-Once resistant to salt and chlorides?
Yes.
Is Seal-Once breathable?
Yes, Seal-Once draws moisture out of the material keeping moisture from penetrating into the material.
Does Seal-Once prevent Mold and Mildew stains?
Yes, by stopping water and moisture penetration. Most types of existing mold and mildew stains can be removed using the All Wood Cleaner when used according to directions before applying Seal-Once.
Does Seal-Once prevent airborne mold?
Seal-Once cannot prevent airborne mold, but will prevent the mold from attaching itself to the wood and concrete making it easier to remove.
Does Seal-Once have a shelf life and how should I store it?
Seal-Once has no shelf life when kept in an unopened container above freezing.
Can I apply Seal-Once sooner than six or ten years?
Yes.
Why are there marks, stains, dirt, etc. on my Seal-Once treated surface, how do I remove them, can I recoat with Seal-Once, and what can I do to prevent it from happening?
Seal-Once prevents any marks, stains, dirt, etc. from penetrating into the surface but does not prevent it from occurring on the surface. Those surface contaminants can be treated with appropriate cleaners, we do not recommend using sodium percarbonate or caustic cleaners on tinted surfaces. Once clean, you can use Seal-Once to retreat any properly cleaned areas of the surface. To prevent the problem from happening or recurring, we recommend using the Poly Blend product to protect the surface of the substrate and still provide waterproof protection.
Does Seal-Once protect against hydrostatic pressure?
No.

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SEAL-ONCE QUESTIONS

Wood and Composite Decking Questions

How do I maintain my Seal-Once treated wood surface?
You can select the Maintenance and Care tab at the bottom of each Seal-Once product page to learn more about how to maintain each type of Seal-Once and Poly Blend treatment.
Can Seal-Once be applied to green or freshly cut wood?
Yes, Seal-Once is breathable so it will continue to draw out the moisture within the wood allowing the wood to continue to age naturally after it has been treated with Seal-Once.
Why do we recommend waiting 3 to 6 months before applying Seal-Once to pressure treated lumber?
Manufacturers recommend coating pressure treated wood as early as three months to six months. Pressure treated wood is treated with chemicals and other materials so the wood needs to sufficiently dry before applying a coating. Applying a coating to pressure treated wood too soon can cause peeling, cracking, bubbling, and other adhesion problems to film forming products. Seal-Once is a penetrating waterproofer and will not peel, crack, bubble, etc.; but applying Seal-Once too soon could prevent penetration. The best way to determine if pressure treated wood is porous enough to accept Seal-Once is to spill some water on the surface and see if it soaks in or pools and puddles. If the water soaks in you can apply Seal-Once.
What is mill glaze and how do I remove it, when is removal necessary?
Mill glaze is the result of processing logs in a saw mill and occurs when the blade heats up the resin in the wood forming an invisible film on the cut surface. Mill Glaze affects all coatings and must be removed before applying Seal-Once. Mill glaze can be removed by using the All Wood Cleaner according to directions.
How do I remove the black spots on my composite deck?
Use the Mold Stain eliminator according to directions. It is best to allow the cleaner to sit over night before rinsing.

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Concrete and Masonry Questions

Can I apply Seal-Once Concrete/Masonry to “green” Concrete and how soon can it be applied?
Yes, Seal-Once can be applied to green concrete as soon as the water has evaporated.
Can Seal-Once be used on pavers?
Yes, Seal-Once can be used on any porous substrate. Seal-Once cannot penetrate polished or glazed surfaces.
Will Seal-Once prevent spalling of concrete?
Yes, Seal-Once prevents spalling of concrete.
Does Seal-Once prevent efflorescence?
Yes, Seal-Once stops water ingress which causes efflorescence. Efflorescence must be removed before application.
Can the tints also be used with the Seal-Once Concrete & Masonry product?
Yes, we recommend using Mahogany, Brown, Slate Gray, Dark Gray, Shale Gray, or Battleship Gray.

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Seal-Once Multisurface Waterproofer Industrial Concentrate Questions

What does mix Multisurface Concentrate in a 1:1 ratio with water mean?
Mix each gallon of Multisurface concentrate with a gallon of clean water.
What kind of water can I use to dilute the Multisurface Concentrate?
Clean water without heavy minerals.
Can you store diluted Multisurface Concentrate for long periods of time?
It is not recommended. It is better to store Multisurface Concentrate in undiluted form.

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SEAL ONCE TINTS QUESTIONS

What is the difference between Seal-Once and Poly Blend pigments and competitor’s pigments?
Seal-Once and Poly Blend pigments are UV stable and nontoxic based on durable pigments like Iron Oxides and Carbon Black, and APE free non-ion surfactants. The tints react to UV energy by converting it into thermal energy. Other pigments are made from organic materials which can deplete after 18 months by weathering or degradation by UV light. Many other pigments on the market are also toxic.
Can I use other tints, stains, and pigment colors from other manufacturers to mix with your Seal-Once?
No, our tints are specially formulated for use in Seal-Once.
I am having hard time deciding between two or three different Seal-Once tint colors, how can I be sure I choose the right color for me?
We offer 4 oz. premixed bottles of all our tint colors so you can apply them to a small piece of the material you are coating and know what the final look of the tint will be on your particular material before you commit to one.
Why is the tint color I see on my Seal-Once coated surface different than what is displayed on the tint charts on the website?
Our tints are semi-transparent allowing the color and grain of the wood to show through. The samples you see on the website and on our color chains are coated on Western Red Cedar wood. Using a different kind of wood or other material will produce different results. Differences in application will also result in a darker or lighter color.
Why is the color fading on the surface I sealed with tinted Seal-Once?
Seal-Once tint colors can fade due to heavy weathering and abrasion.
Why has the Seal-Once tint washed away?
The tinted Seal-Once was not given enough time to bind properly with the surface before it rained. It is recommend to let the Seal-Once dry at least 12 hours before precipitation occurs.
What can I do to restore areas where the Seal-Once tint has faded?
Properly clean the affected area with mild cleaners then apply seal-once at two coats lightly overlapping with previous Seal-Once tinted areas.
Can I blend your Seal-Once tint colors together to make my own custom formulas?
You can mix our Seal-Once Tints together to create your own color but we do not guarantee the final results if the instructions on the tint bottles and on our products are not followed precisely.

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POLY BLEND

How long does the Poly Blend last?
When applied to according to directions with the surface properly prepared for sealing, the Poly Blend typically can last 4-6 years. The Poly Blend may experience a shorter life span on south and west exposure areas and in areas of above normal weathering and abrasion.
Does the Poly Blend provide UV protection?
Clear Poly Blend at two coats does not, but premixed Poly Blend with a Poly Blend Tint does provide UV protection.
Does the Poly Blend product have a shelf life and how should I store it?
Poly Blend has a shelf of 18-24 months and should be stored at room temperature out of direct sunlight.
When do I need to reapply Poly Blend, can I reapply at any time?
You can reapply Poly Blend at any time. Reapplication is recommended in areas where the tint may be fading tint or in areas where they may be a loss of the slight matte finish.
Why is the Poly Blend peeling?
Peeling is a common adhesion problem with film forming products. The polyurethane component of the product provides a thin film of protection on the surface that can peel if the surface has not been properly cleaned of mold and mildew stains, dirt, grime, mill glaze, previous coatings, etc.

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POLY BLEND TINTS

How are the Poly Blend tints different than the Seal-Once tints?
Our Poly Blend tints have been reformulated to work exclusively with the unique properties of the Poly Blend product.
Can I use other tints, stains, and pigment colors from other manufacturers to mix with your Poly Blend?
No, our tints are specially formulated for use with the Poly Blend product.
I am having hard time deciding between two or three different Poly Blend tint colors, how can I be sure I choose the right color for me?
We offer 4 oz. premixed bottles of all our tint colors so you can apply them to a small piece of the material you are coating and know what the final look of the tint will be on your particular material before you commit to one.
Why is the tint color I see on my Poly Blend coated surface different than what is displayed on the tint charts on the website?
Our tints are semi-transparent allowing the color and grain of the wood to show through. The samples you see on the website and on our color chains are coated on Western Red Cedar wood. Using a different kind of wood or other material will produce different results. Differences in application will also result in a darker or lighter color.
Can I blend your Poly Blend tint colors together to make my own custom formulas?
You can mix our Seal-Once Tints together to create your own color but we do not guarantee the final results if the instructions on the tint bottles and on our products are not followed precisely.

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100% POLYURETHANE QUESTIONS

Does the Polyurethane provide UV protection?
Yes.
Does the Polyurethane product have a shelf life and how should I store it?
The Polyurethane product has a shelf life of 18 months and should be stored at room temperature out of direct sunlight.
How do I stop the Polyurethane from leaving brush marks on wood?
Rolling is the best method of application to avoid brush marks.
Why is the Polyurethane peeling, cracking, forming white spots, etc.?
Peeling, cracking, white spot formation, etc. are all common adhesion problems with film forming products. The polyurethane product creates a film of protection on the surface that can peel, crack, form white spots, etc. if the surface has not been properly cleaned and free of mold and mildew satins, dirt, grime, mill glaze, previous coatings, etc. or if the material has not been adequately sealed with Seal-once to block moisture penetration in exterior applications. These adhesion problems can also be caused by applying the polyurethane in excess of 4-5 mils per coat as recommended by the manufacturer.

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