Exterior Mildew Exterior Paint Solution

Mildew: Mildew is the formation of brown, black or gray spots or blotches on the surface of paint or caulk due to the presence of fungi that feed on the paint film and other organic matter.

Possible Causes:

Damp areas that receive little or no direct sunlight (thus, such areas as walls with a northern exposure and the underside of eaves are particularly vulnerable).

Use of a lower quality paint with an insufficient amount of mildewcide.

Painting over a substrate or coating on which mildew is present.

Failure to prime bare wood before painting.

Solution:

First, make sure that the discoloration really is mildew, and not just dirt. Apply a few drops of household bleach to it, wait five minutes, then rinse. If the dark color disappears, the discoloration is probably mildew. Remove all mildew by scrubbing with a diluted household bleach solution (one part bleach, three parts water). Be sure to take the proper safety precautions -wear rubber gloves and eye protection. Leave the bleach on the surface for several minutes, then rinse. Next, thoroughly clean the surface with a detergent solution to remove dirt and other organic material on which mildew can feed. This can be done by hand or with a power washer. Rinse again. When the surface is dry, apply one or two coats of top quality acrylic latex paint — this type of paint contains extra mildewcide and will resist mildew better than oil-based or alkyd paints.


Exterior Painting – Frequently asked questions

Can I paint over aluminum/vinyl siding?
Yes. Always make sure the surface is cleaned to remove any chalk or dirt. Never apply paint that is darker than the original painted surface on vinyl siding.

Do I need to wash my house before I paint?
Yes. Surfaces must be clean before painting. Thoroughly wash with a house cleaner and water solution, making sure to remove any and all mildew. Rinse and allow to dry.

How much paint do I need?
Be sure to utilize our Paint Gallon Calculator in the Project Planner section to help you determine how many cans to buy for your next project.

To achieve one-coat coverage, paint should be applied at a maximum of 400 square feet per gallon. Rough or textured surfaces may require more paint. On these areas allow for 25-30 square feet per gallon. Some bright colors may require multiple costs to achieve sufficient hide.

How do I apply the paint?
When using more than one gallon of the same product, mix the gallons together to insure color and sheen uniformity. Two coats of this paint will provide maximum protection.

How do I paint shingles & shakes?
Shingles offer natural breaking points, paint in a vertical direction.

How do I care for freshly painted surfaces?
We suggest not washing your newly painted surface for at least 30 days. After that time, dirt and stains may be removed using a mild, non-abrasive cleanser and water.

I have never painted the exterior of my home before….?
When painting the exterior of your home always start with a clean surface; paint one side of the house at a time, starting with the highest point; apply a full even coat to one side of the house at a time and always paint the trim last.

What conditions are best for painting my house?
Generally you should only paint when the surface is between 50F and 85F. High temperatures cause the water in the paint to evaporate too quickly, while low temperatures prevent latex from covering properly. Always avoid painting in direct sunlight, strong winds, or when rain is expected within 8 hours.

What tools do I need?
Depending on your project and the type of structure you are painting, paints may be applied with a nylon/polyester brush, a paint pad or spray unit.

What is the proper way to use spray equipment?
It is always safe to operate spray equipment with safety cautions. Use respiratory and eye protection. All spray units are different and it is important to follow the manufacturer’s instructions carefully.

HOW TO PAINT A CEILING | USING MASKING TAPE

HOW TO PAINT A CEILING

You can paint a ceiling working from a stepladder or a work platform (make sure yours is stable) or from the floor using a roller or paint pad with a handle extension. If you are standing on a platform, leave at least 3 in (7.5 cm) above your head, Divide the ceiling into sections of about 1-1/2ft (30-45 cm) wide and work each section away from the main light source.

A ROLLER WITH AN EXTENSION

USING MASKING TAPE

If you intend to divide an area horizontally into two colors or to paint around an object such as a switchplate, it is helpful to stick down low-tack masking tape to create a straight line between the different color divisions. You can use tape along the edge of the floor to keep it free of paint when you decorate the baseboards. Also use masking tape to attach stencils to a wall.


1. Mark the line between the two colors with a soft pencil and a ruler. Check the alignment of the horizontal line with a level and the vertical line with a level or plumb line.


2. Stick down the masking tape along the line, making sure that the pencil line is still visible. If your dividing line is vertical, stick the masking tape along the far edge of the line.


3. Apply paint from the middle of the masking tape downward with a small decorating brush. Once you have covered the immediate area, paint the rest of the surface with a large brush.


4. When you have finished painting the wall and the paint is completely dry, you can pull off the tape. The use of low tack masking tape keeps the paint from being peeled off at the same time.

Exterior Frosting Exterior Paint Solution

Frosting: A white, salt-like substance on the paint surface. Frosting can occur on any paint color, but it is less noticeable on white paint or light tints. On masonry, it can be mistaken for efflorescence see Efflorescence and Mottling.

Possible Causes:

Forms mostly in protected areas (such as under eaves and on open porch ceilings) that do not receive the cleansing action of rain, dew and other moisture.

Use of dark-colored paints that have been formulated with calcium carbonate extender.

Application of a dark-colored paint over a paint or primer containing calcium carbonate extender.

Solution:

Frosting can be a stubborn problem. It often cannot be washed off readily. Moreover, the condition can recur even as a bleed-through when a new top coat is applied. In extreme cases, it can interfere with adhesion. The best remedy is to remove the frosting by wirebrushing masonry or sanding wood surfaces; rinse, then apply an alkyd-based primer before adding a coat of high quality exterior paint.


Exterior Painting – Frequently asked questions

Can I paint over aluminum/vinyl siding?
Yes. Always make sure the surface is cleaned to remove any chalk or dirt. Never apply paint that is darker than the original painted surface on vinyl siding.

Do I need to wash my house before I paint?
Yes. Surfaces must be clean before painting. Thoroughly wash with a house cleaner and water solution, making sure to remove any and all mildew. Rinse and allow to dry.

How much paint do I need?
Be sure to utilize our Paint Gallon Calculator in the Project Planner section to help you determine how many cans to buy for your next project.

To achieve one-coat coverage, paint should be applied at a maximum of 400 square feet per gallon. Rough or textured surfaces may require more paint. On these areas allow for 25-30 square feet per gallon. Some bright colors may require multiple costs to achieve sufficient hide.

How do I apply the paint?
When using more than one gallon of the same product, mix the gallons together to insure color and sheen uniformity. Two coats of this paint will provide maximum protection.

How do I paint shingles & shakes?
Shingles offer natural breaking points, paint in a vertical direction.

How do I care for freshly painted surfaces?
We suggest not washing your newly painted surface for at least 30 days. After that time, dirt and stains may be removed using a mild, non-abrasive cleanser and water.

I have never painted the exterior of my home before….?
When painting the exterior of your home always start with a clean surface; paint one side of the house at a time, starting with the highest point; apply a full even coat to one side of the house at a time and always paint the trim last.

What conditions are best for painting my house?
Generally you should only paint when the surface is between 50F and 85F. High temperatures cause the water in the paint to evaporate too quickly, while low temperatures prevent latex from covering properly. Always avoid painting in direct sunlight, strong winds, or when rain is expected within 8 hours.

What tools do I need?
Depending on your project and the type of structure you are painting, paints may be applied with a nylon/polyester brush, a paint pad or spray unit.

What is the proper way to use spray equipment?
It is always safe to operate spray equipment with safety cautions. Use respiratory and eye protection. All spray units are different and it is important to follow the manufacturer’s instructions carefully.

Fresh Paint Smell – Paint Tips

Eliminate paint odor by adding two teaspoons of vanilla to a quart of paint.


Handy Person Tips

1. To avoid cleaning paint brushes and rollers if you intend to use the same color later, or if you do not have time to clean immediately, place the brushes and rollers in a plastic bag, tie shut and place in the freezer. They will keep for several days without drying up.
2. Protect hands from paint solvent by putting the brush and solvent into a strong plastic bag. With hands outside the bag, work the solvent into the brush through the plastic.
3. After cleaning your paint brush, a few drops of oil worked into the bristles will leave the brush soft and ready to use.
4. To clean paint rollers, fill an empty one-quart milk carton with solvent, put the roller inside and crimp the ends shut. Give the carton a few shakes, then let sit for a couple of hours.
5. Simmer hardened paint brushes in full-strength vinegar. Re move the softened paint with a wire comb or brush.
6. To remove oil or enamel paint from your hands, rub on paste floor wax and then wash with plenty of soap and warm water. There is no odor and it’s easier on the skin than paint remover.
7. In time, a partly used can of paint will develop a skin on top. To prevent this, cut wax paper the size of the can and drop it in.
8. To save partial cans of leftover paint, fill the airspace with a lightly inflated balloon before pressing on the lid.
9. A coat of penetrating stain applied to a smooth wood surface may last only three or four years, but a second application after the wood has weathered will last as long as 10.
10. To give bathroom fixtures a new look, paint with an epoxy paint, sold especially for that purpose.
11. Never stir varnish. It has no color pigments which need blending and stirring will create air bubbles which can ruin a smooth finish.
12. To frost a bathroom or garage window, make a solution of one cup of beer to four tbsp. Epsom salts and paint on the window. It washes off when you want a clear pane again.
13. If you have a small hole in your wall (after moving pictures etc.) take a wax crayon as near the color of your wall as possible. Rub the hole with the crayon, polish with a dry cloth and the hole is invisible.
14. Clean out old nail polish bottles and fill with ‘touch-up’ paint for scuffs and scratches that may occur on your walls.
15. When hanging pictures on plaster walls, put a small piece of adhesive tape where the nail is to go in. Drive the nail through the tape. This helps prevent the plaster from cracking.
16. When drilling a hole in any kind of wall, take an envelope, crease the edges to hold it open, then fasten it to the wall just under where you are drilling. It keeps a great deal of mess from hitting the floor and makes clean-up easier.
17. After wallpaper or painting, write the amount under a light-switch plate and you’ll always know how much wallpaper or paint you need for that room.

Exterior Surfactant Leaching Exterior Paint Solution

Surfactant Leaching: Concentration of water-soluble ingredients on latex paint, creating a blotchy, sometimes glossy appearance, often with a tan or brownish cast. More likely with tinted paints than with white or factory-coloured paints.

Possible Causes:

Painting in cool, humid conditions or just before they occur. The longer drying time allows the paint’s water-soluble ingredients — which would normally evaporate, or be leached out by rain or dew — to rise to the surface before paint thoroughly dries.

Mist, dew or other moisture drying on the painted surface shortly after it has dried.

Solution:

Avoid painting in the late afternoon if cool, damp conditions are expected in the evening or overnight. If the problem occurs in the first day or so after the paint is applied, the water-soluble material can sometimes be rinsed off rather easily. Fortunately, even more stubborn cases will generally weather off in a month or so. Surfactant leaching should not affect the ultimate durability of the coating.


Exterior Painting – Frequently asked questions

Can I paint over aluminum/vinyl siding?
Yes. Always make sure the surface is cleaned to remove any chalk or dirt. Never apply paint that is darker than the original painted surface on vinyl siding.

Do I need to wash my house before I paint?
Yes. Surfaces must be clean before painting. Thoroughly wash with a house cleaner and water solution, making sure to remove any and all mildew. Rinse and allow to dry.

How much paint do I need?
Be sure to utilize our Paint Gallon Calculator in the Project Planner section to help you determine how many cans to buy for your next project.

To achieve one-coat coverage, paint should be applied at a maximum of 400 square feet per gallon. Rough or textured surfaces may require more paint. On these areas allow for 25-30 square feet per gallon. Some bright colors may require multiple costs to achieve sufficient hide.

How do I apply the paint?
When using more than one gallon of the same product, mix the gallons together to insure color and sheen uniformity. Two coats of this paint will provide maximum protection.

How do I paint shingles & shakes?
Shingles offer natural breaking points, paint in a vertical direction.

How do I care for freshly painted surfaces?
We suggest not washing your newly painted surface for at least 30 days. After that time, dirt and stains may be removed using a mild, non-abrasive cleanser and water.

I have never painted the exterior of my home before….?
When painting the exterior of your home always start with a clean surface; paint one side of the house at a time, starting with the highest point; apply a full even coat to one side of the house at a time and always paint the trim last.

What conditions are best for painting my house?
Generally you should only paint when the surface is between 50F and 85F. High temperatures cause the water in the paint to evaporate too quickly, while low temperatures prevent latex from covering properly. Always avoid painting in direct sunlight, strong winds, or when rain is expected within 8 hours.

What tools do I need?
Depending on your project and the type of structure you are painting, paints may be applied with a nylon/polyester brush, a paint pad or spray unit.

What is the proper way to use spray equipment?
It is always safe to operate spray equipment with safety cautions. Use respiratory and eye protection. All spray units are different and it is important to follow the manufacturer’s instructions carefully.

PAINTING WITH A ROLLER | WHEN TO USE A PAINT PAD

PAINTING WITH A ROLLER

Rollers are useful for painting large areas and are available in different sizes and textures. Foam and mohair sleeves are good for covering smooth surfaces; wood and deep-pile synthetic suit rough surfaces. Cut in edges before using on a wall.


1. Rollers are suitable for applying latex paint: oil-based paint can be difficult to clean off from the cover. Prepare for painting by pouring a quantity of paint into a clean, dry roller tray.


2. Place the roller sleeve over the roller. Dip the roller in the paint, rolling it up and down the incline of the tray until it is well covered.


3. Apply the paint randomly by running the roller up and down the wall and from side to side. Spread the paint as evenly as possible, and try not to let the roller slide across the wall.


4. To complete one area, lift off in an upward stroke. When you move to an adjacent area, roll over the wet edges to blend. Be careful not to splash paint onto the woodwork.


WHEN TO USE A PAINT PAD

Paint pads are interchangeable with rollers. They are ideal for applying water-based paint to large areas. Although they can be used with oil-based paints, it is possible that the cleaning solvents required to remove oil-based paint could damage the sponge. Paint pads can be used to paint metalwork and wood.


1. Pour the paint into a paint-pad tray or a roller tray. Lightly dip the pad into the paint, keeping the pad flat. Do not submerge it. If overloaded, wipe off the excess. Alternatively, buy an applicator to apply paint to the pad.


2. Cover the surface randomly in a light, crisscross motion. Do not press too hard or the paint will drip. Reload the pad only when you can see that the paint coverage is beginning to thin.

WHEN TO SIEVE PAINT | PAINTBRUSH KNOW-HOW

WHEN TO SIEVE PAINT

Sieve paint if you see bits of debris in it, or if a skin has formed. A just-opened new can does not need to be sieved.


1. Use a knife to cut around the top skin. Remove the skin by carefully pulling it to one side of the can.


2. Stretch muslin or old nylon hose across the bucket and pour the paint through. Store the paint in an airtight jar.


PAINTBRUSH KNOW-HOW

For large areas use a wide brush or roller. Tackle intricate areas with an artist’s brush. A range of in-between brush sizes is available.


1. Use only new brushes for priming as they may shed bristles. To remove debris, flick the brush against your hand.


2. Dip a third of the bristle length into the paint. Dab the bristles against the bucket side to remove any excess paint.

PREPARING PAINT | WHY USE A PAINT BUCKET?

PREPARING PAINT

Once a can of paint has been opened dirt may contaminate it or a skin may form on the surface. To prevent any contamination, always replace the lid after use and store the can upside down.


1. To prevent debris on the can surface from falling into the paint; brush the rim with a paintbrush.


2. Work around the rim of the lid with the blunt edge of a flat-bladed knife, prying the lid until it springs open.


3. Stir the paint with a piece of wooden doweling in wide and narrow circles to give a consistent color.


WHY USE A PAINT BUCKET?


FOIL-LINED BUCKET

It makes sense to work out of a paint bucket rather than paint can. It will enable you to transfer as much paint as you need at one time, and a bucket with a handle can be hung from a ladder. Once you have mixed the paint, pour as much as you need into the bucket. Line the bucket with aluminum foil before you fill it, as paint can be difficult to remove. Place the foil with the shiny surface up.

REMOVING FLAKING PAINT | HOW TO FILL HOLES

REMOVING FLAKING PAINT

If a painted surface is in poor condition and the paint is flaking, you will have to strip it off before repainting. Use a wide scraper to remove the paint. If the paint is stubborn, apply a chemical stripper. When the surface is bare, smooth it with medium-grain sandpaper wrapped around a cork block, lithe surface has been painted with tempera; seal it with a stabilizing solution after you have sanded it down.


HOW TO FILL HOLES

It is worth filling even small cracks and holes for a professional result. You can buy filler as ready-mixed paste or as a powder that must be mixed before use. Always check manufacturers’ instructions before preparing the paste. The average drying time is 30 minutes. Fill large holes with several layers of filler if necessary. After filling, sand down the surface. Filler can be difficult to remove from equipment, so if you are mixing your own, line the container with a plastic bag to avoid a messy cleaning job afterward.


1. Stat by brushing away loose debris with a small decorating brush.


2. Wet the hole with a small, damp brush to ensure that the filler stays inside the hole.


3. Press the filler into hole with a putty knife. Allow filler to dry between layers. Wipe off excess.


4. Smooth with the wet blade of a putty knife. Once dry, sand with fine-grain sandpaper.

Exterior Peeling Exterior Paint Solution

Peeling: Spontaneous loss of ribbons or sheets of paint due to loss of adhesion. When the surface is coated with a primer and topcoat, or with several coats of paint, the peeling may involve all the coats, some of them, or just the topcoat.

Possible Causes:

Swelling of wood due to seepage or penetration of rain, humidity and other forms of moisture into the home through uncaulked joints, deteriorated caulk, leaking roof or other areas.

Excess humidity or other moisture escaping from within the home through the exterior walls (less likely with latex paints, which allow water vapor to escape without affecting the paint film).
Inadequate surface preparation.

Use of a lower quality paint that has inadequate adhesion and flexibility characteristics.
Applying latex paint under conditions that hinder good film formation, e.g., on a very hot or cold day; in windy weather.

Applying an oil-based paint over a damp or wet surface.
Earlier blistering of paint see Blistering.

Solution:

If exterior moisture is the cause, eliminate the source by doing necessary repairs and maintenance: replace caulking; repair roof; clean gutters and downspouts; cut heavy vegetation away from the building. If moist air is originating from inside, consider installing vents (especially in rooms that tend to get humid such as the kitchen, bathroom and laundry room); attic louvers, exhaust fans and dehumidifiers may also help. Remove all loose paint with a scraper or wire brush, sand rough surfaces and prime any bare wood. Repaint with a top quality acrylic latex paint — it will provide excellent adhesion and allow water vapor to escape without harming the coating.


Exterior Painting – Frequently asked questions

Can I paint over aluminum/vinyl siding?
Yes. Always make sure the surface is cleaned to remove any chalk or dirt. Never apply paint that is darker than the original painted surface on vinyl siding.

Do I need to wash my house before I paint?
Yes. Surfaces must be clean before painting. Thoroughly wash with a house cleaner and water solution, making sure to remove any and all mildew. Rinse and allow to dry.

How much paint do I need?
Be sure to utilize our Paint Gallon Calculator in the Project Planner section to help you determine how many cans to buy for your next project.

To achieve one-coat coverage, paint should be applied at a maximum of 400 square feet per gallon. Rough or textured surfaces may require more paint. On these areas allow for 25-30 square feet per gallon. Some bright colors may require multiple costs to achieve sufficient hide.

How do I apply the paint?
When using more than one gallon of the same product, mix the gallons together to insure color and sheen uniformity. Two coats of this paint will provide maximum protection.

How do I paint shingles & shakes?
Shingles offer natural breaking points, paint in a vertical direction.

How do I care for freshly painted surfaces?
We suggest not washing your newly painted surface for at least 30 days. After that time, dirt and stains may be removed using a mild, non-abrasive cleanser and water.

I have never painted the exterior of my home before….?
When painting the exterior of your home always start with a clean surface; paint one side of the house at a time, starting with the highest point; apply a full even coat to one side of the house at a time and always paint the trim last.

What conditions are best for painting my house?
Generally you should only paint when the surface is between 50F and 85F. High temperatures cause the water in the paint to evaporate too quickly, while low temperatures prevent latex from covering properly. Always avoid painting in direct sunlight, strong winds, or when rain is expected within 8 hours.

What tools do I need?
Depending on your project and the type of structure you are painting, paints may be applied with a nylon/polyester brush, a paint pad or spray unit.

What is the proper way to use spray equipment?
It is always safe to operate spray equipment with safety cautions. Use respiratory and eye protection. All spray units are different and it is important to follow the manufacturer’s instructions carefully.