Can I Use Thompson's Water Seal On Painted Wood

Wood sealer is like sunscreen for your painted wood projects. It protects the paint from sun impairment and fading while also repelling h2o, clay, and mildew.

Learning how to seal painted wood for outdoor use is a elementary process that volition extend the life of your project. Whether you're sealing a deck, mailbox, or patio piece of furniture, we'll show you how to practice it in simply a few steps.

Let'southward get started on the journey to protect painted wood!

How to Seal Painted Wood for Outdoor Apply

Cull the correct sealant
Clean painted wood
Prepare the sealant
Lightly sand painted woods and make clean
Apply sealant on painted wood
Sand lightly and reapply the sealant
Dry wood

How to Seal Painted Wood for Outdoor Use – (Stride by Step Process)

First, choose the right sealant to seal painted wood for outdoor utilize. Then, prepare the wood for sealing by cleaning and lightly sanding.

Utilise sealant on painted woods with a brush, roller, or sponge. Sand the forest and reapply the sealant. Always ensure your wood is dry before and afterward sealing.

Before commencing the sealing process, y'all need to get your tools and materials gear up. They are outlined below.

Tools and materials for sealing painted wood

As you get set to seal painted wood, the following are necessary tools to set up your workspace.

Protective gear and centre protection
Fresh rags or a tack cloth
Sandpaper
Quality paintbrush, roller, or sponge
Outdoor sealer

Steps on sealing painted wood for outdoor apply

Let's go into more than particular on the steps involved in sealing painted forest for outdoor use.

Step i: Choose the right sealant

Choosing the correct sealant is perhaps the about of import step in sealing painted woods.

The blazon of paint coat on the blank wood surface will decide the sealant type y'all will work with. For example, oil-based paint volition naturally get well with an oil-based sealant.

There are plenty of wood sealants in the market, but nosotros have narrowed it to the three listed below.

Polyurethane

When we talk nearly sealant types, a major example is a polyurethane. Polyurethane is a long-lasting clear coating that comes in two forms: oil-based polyurethane and h2o-based polyurethane.

Oil-based polyurethane

Oil-based polyurethane is too known equally solvent-based polyurethane.

This form of polyurethane sealant contains a higher percentage of Volatile Organic Compounds (VOCs), making it more durable than h2o-based ones.

Another plus for oil-based polyurethane is that it is cheaper. Information technology besides provides a glossier appearance; however, it may darken and turn yellow with time.

A major reason, however, that might discourage your apply of oil-based polyurethane is that information technology requires a long curing time resulting from its meaning corporeality of VOCs.

These VOCs are harmful to the body; hence enough time must exist allocated for the toxic fumes to be released.

Water-based polyurethane

Though both polyurethane forms requite off an odour, h2o-based polyurethane is less smelly due to its lower percentage of VOCs, which is great.

What's even better is that this reduced quantity of VOCs in water-based polyurethane makes it less harmful to humans and is, therefore, requires a shorter time for information technology to dry completely.

Finally, h2o-based polyurethane remains clear with time, and it is useful for acrylic and latex painted finishes.

Keep in listen that a clear polyurethane topcoat non simply seals outside paints, thereby extending the duration of the pigment but also giving the painted wood a shiny appearance.

Polycrylic

A Polycrylic sealant is like to water-based polyurethane. Polycrylic contains polyurethane resins which serve to protect the painted wood from sunlight, moisture, and extreme weather atmospheric condition.

It is clear, less smelly, and has a low percent of VOCs, therefore less toxic. Information technology is also very suitable for employ with flat latex paint and very piece of cake to make clean. You tin go unlike forms of paint finishes with polycrylic: clear, satin, or high gloss.

Polycrylic, however, is not as durable as polyurethane. Another disadvantage is that it volition not bail with oil-based paints; there will most likely exist adhesion issues as Polycrylic is water-based.

Paint Sealer combos

Recently, products known every bit sealer combos have appeared in the market. Sealer combos are an innovative combination of paint and sealant in a can. In addition, these products do not require whatever topping with additional coats.

They also practice not stain as they accept a clear coat and are less prone to discolouration; hence, they are suitable for painting and sealing white piece of furniture or outdoor forest of light colour.

Furthermore, sealer combos come up with specific instructions from the manufacturers for their grooming and application, and then do well to read and follow these earlier utilize.

Epoxy

Epoxy is another suitable instance of a wood sealant. Epoxy provides a long-lasting stop for outdoor furniture due to its hard, protective picture. This non-porous coating and, equally such, extremely water-repellent tin last for 5-x years.

Boatbuilders use Epoxy for this reason. Epoxy coatings are available in ii forms: either clear or coloured. Too, Epoxy tin can be used in combination with exterior varnish.

Epoxy provides the hard, protective covering and the exterior varnish serves equally protection against the UV rays from the sun. Withal, a major downside is that Epoxy is expensive.

Exterior Oils

Naturally occurring oils can be used to seal the wood. Linseed oil, Tung oil, Coconut oil, and Walnut oil are popular examples.

However, in recent years, companies have manufactured different blends of these oils. Usually, linseed oil and tung oil, mineral spirits, and other components are used to create products with improved wood sealing activity.

Danish oil, a blended product, gives a lustrous or glossy stop. Another instance of a composite production is teak oil, and which gives a slight sheen appearance that is more durable.

Step two: Make clean painted wood

Before sealing painted wood, ensure the forest surface is clean, clear of any grit, dirt, or grime, and the surface is dry out.

Unremoved dirt, oil, or other heavy residues on the wood will prevent the bonding of the clear polyurethane or polycrylic sealants to the paint. For this cleaning, utilise one-half cup of trisodium phosphate (TSP) mixed with warm h2o.

While wearing rubber or latex gloves, wipe down the wood with a rag soaked in the TSP solution. Nevertheless, ensure yous don't soak the surface of the painted wood.

Step 3: Prepare the sealant

Y'all must prepare the sealant earlier applying information technology. To exercise this, mix the binders and pigment thoroughly past stirring with a long, clean stick. To prevent separation, ensure all the components are well blended. Also, stir gently to avoid bubbles.

Sealer combos normally contain specific instructions on use from the manufacturers. Ensure you read the instructions carefully to ensure a hitch-costless sealing process.

Stride 4: Lightly sand painted woods and clean

Start past wearing safety goggles to protect your eyes from sawdust. Adjacent, remove all crude spots on the painted wood surface by lightly sanding with 220-320 grits of sandpaper. The surface, however, must be dry out.

After sanding, wipe down the woods surface make clean with a tack material.

Step 5: Apply sealant on painted wood

Dip the castor into the tin can of sealant and do non wipe off backlog sealant on the border of the tin can to prevent the formation of bubbles.

Paint in one direction and utilize the forest sealant evenly from edge to edge and in the direction of the wood grain. Bated from making your paint wait natural, this technique prevents bubbles from forming.

Note that it is preferable to paint frontwards rather than backward. In case bubbles or drips form, immediately shine them out with the paintbrush when the coat is still wet.

And allow the wood sealant to dry according to the manufacturer's instructions. Also, practice non brush excessively, as over-brushing tin introduce bubbles of air which may ruin your finish. In improver, over-brushing makes your brush sticky.

Step 6: Sand lightly and reapply the sealant

Once again sand lightly, and make clean the wood surface with a fresh rag or tack cloth to remove all sawdust and residues.

Then, reapply the sealant.

You can employ up to three additional coats of polycrylic or polyurethane wood sealants. However, sand between coatings and let the forest dry out before recoating to avoid stickiness.

Pace vii: Dry wood

Subsequently adding the last coat and sealing the wood, let the forest to dry.

You either let the finished piece stand overnight or, according to the manufacturer'southward instructions, allow for proper drying or curing before it is used.

Why Seal Woods with Outside Paints for Outdoor Use?

Exterior paint, though extremely useful, is sometimes not enough protection confronting the extreme weather condition conditions pieces of outdoor furniture confront.

UV rays from sunlight can harm outdoor piece of furniture. Such damage, known every bit photodegradation, occurs as the pigments on the painted woods blot the UV rays leading to the breakdown of the bonds holding the paint together.

This breakup of the bonds in pigment leads to fading. The fading of paint on woods makes information technology lose its pleasant appearance, and while this is bad enough, things can actually get worse.

Some other subversive agent can come up in when wood loses its pigment and water. Past itself, water can weaken the wood. Furthermore, the presence of water in wood will encourage the growth of fungi which can further damage the forest.

When to Paint and Seal Bare Wood Surfaces?

To start with, check the moisture content of the wood. Normally, 15-20% wet content is considered adequate, but no more else, in that location will exist a loss of adhesion between the wood and the paint practical.

Next, remove all stale up and oozing sap, so apply a suitable primer to seal off all knots and affected sap areas. Finally, fill in all the cracks and holes using a high-grade filler, after which y'all can begin to sand the wood with sandpaper.

Ensure you sand in the same direction as the wood grain for a shine terminate, then clean off the sawdust. Now, your wood is set to be painted and sealed.

Other Post: Tin You Paint Teak Woods or Furniture?

FAQs

Does exterior paint seal wood?

Exterior paints usually contain chemicals that brand forest waterproof and resistant to farthermost weather weather condition. Still, exterior paint finishes sometimes require further protection to shield wood. Woods sealants are used to seal painted forest and increase the immovability of the paint.

What is the best exterior clear coat for the painted wood?

Exterior Polyurethane. Polyurethane provides an splendid, durable clear topcoat for painted woods. It also comes in two forms: h2o-based polyurethane and oil-based polyurethane. Water-based polyurethane is useful for acrylic and latex painted finishes, while oil-based polyurethane is suitable for oil-based painted surfaces.

Can polyurethane be used exterior?

Yes, polyurethane can be used outside. Exterior polyurethane can be used to seal wood for outdoor employ, but interior polyurethane is not suitable for outdoor utilise. Interior polyurethane lacks the additives that protect outside paint finishes from the degrading UV rays of the sunday.

Can you put polyurethane over the painted deck?

Inputting polyurethane over a painted deck, you must consider whether or not the deck wood is stained. Unlike paint, stains and wood sealants are not necessarily designed to adhere to each other. Besides, a clear forest sealant like polyurethane tin can not give any more protection to the deck stain, and this can pb to issues maintaining the deck stain with fourth dimension.

What is the best paint to protect the woods from conditions

Oil-based paints are an first-class option when it comes to protecting wood from the weather due to the long-lasting finish they give. However, they require a long curing time as they are toxic. Acrylic exterior paints are also very suitable for protecting wood, and they are less decumbent to cracking, unlike latex paints.

How to seal acrylic pigment on forest for outdoors

To seal acrylic paint on wood for outdoors, first, sand the wood lightly with sandpaper, make clean it, then apply an advisable woods sealant and finally allow the forest to dry. You tin can utilize polycrylic or water-based polyurethane to seal acrylic paint on forest for outdoor apply. These sealers will non impairment the acrylic pigment on the wood.

Does pigment protect wood?

Yep, paint protects the wood. Paint is formulated with chemicals that help improve the overall advent of wood and protect it from moisture, mold growth, rot, stains, and photodegradation due to sunlight. Ensure you sand wood properly, clean and prime number information technology before painting.

Conclusion

Sometimes, outside paint alone is not enough to protect outdoor wood furniture from the damaging furnishings of sunlight, water, and extreme weather conditions.

Sealing painted wood for outdoor use is a way of giving information technology an extra protective coating. Woods sealants used in sealing can protect the paint on wood and improve its appearance. They are also durable and affordable.

Use protective gear, especially safety goggles, gloves, and a mask while working. Also, ensure yous work in a well-ventilated place, preferably an open space like your yard. Have fun.

Farther more, you can larn on how to seal mdf board.