Interior Foaming Cratering Interior Paint Solution

Foaming – Cratering: Formation of bubbles (foaming) and resulting small, round concave depressions (cratering) when bubbles break in a paint film, during paint application and drying.

Possible Causes:

Shaking a partially filled can of paint.

Use of low quality paint or very old latex paint.

Applying (especially rolling ) paint too rapidly.

Use of a roller cover with wrong nap length.

Excessive rolling or brushing of the paint.

Applying a gloss or semi-gloss paint over a porous surface.

Solution:

All paints will foam to some degree during application; however, higher quality paints are formulated so the bubbles break while the paint is still wet, allowing for good flow and appearance. Avoid excessive rolling or brushing of the paint or using paint that is more than a year old. Apply gloss and semi gloss paints with a short nap roller, and apply an appropriate sealer or primer before using such paint over a porous surface. Problem areas should be sanded before repainting.


Interior Painting – Frequently asked questions

Can I paint directly over wallpaper?
No. Wallpaper can be painted over with the proper preparations. Be sure to remove any loose wallpaper, scuff/sand the surface, then apply interior oil-based primer.

Can I apply latex paint over oil based paint?
Yes. Be sure to prepare the surface properly before painting. Oil-based paints should be sanded to a flat finish before painting. After rinsing, apply Dutch Boy® oil-based primer and apply desired latex paint.

Can I apply paint directly over a semi-gloss paint?
No. Semi-gloss paint must be dulled to a flat finish by sanding*, allowing proper adhesion. Removing or disturbing old paint from interior or exterior surfaces by sanding, scraping, abrading or other means may produce dust, debris or fumes that contain lead. Exposure to lead dust, debris or fumes may cause brain damage or other adverse health effects, especially in children and pregnant women. Structures built before 1978 should be tested by a licensed inspector prior to removing or disturbing old paint.

Can I use exterior paint on the inside of my house?
No. Exterior paints are formulated to be more flexible to withstand temperature and climate change.

How can I best prepare my walls before I paint?
Walls that have never been painted should have a recommended primer applied before painting. For previously painted walls, thoroughly wash them with a mild soap and water solution, then rinse with clean water. If your existing surface was painted previously with semi-gloss paint, the surface should be lightly sanded to a duller finish. If the walls have not been painted in five years or longer or are stained then primer should be used.

How much paint do I need?
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 125-300 square feet per gallon.

How do I prepare the surface?
As a general rule, all surfaces should be clean before painting. Remove any loose, peeling paint, and/or any other substrate that is on the surface*. Scrub all surfaces to remove all dirt, grease, oil, etc. Rinse surface well and allow to dry. Apply appropriate patching material to cracks, nail holes, or other surface imperfections, sand smooth, and remove sanding dust.

*If your existing surface is glossy, dull surface by sanding or use an abrasive cleaner. Remove any residue.

How do I take care of my freshly painted surface?
Freshly painted surfaces may be washed after 30 days. Avoid touching, wiping, or wetting any freshly painted surface for 30 days. After that time dirt and stains may be removed with a mild, non-abrasive cleaner and water. Do not place objects on windowsills and shelves until paint is thoroughly dry.

How long should I wait before applying a second coat of paint?
A second coat of latex paint may be applied 6 hours after the first coat. With oil-based paint, you should wait 24 hours between coats.

Should I paint the trim before or after I roll the walls?
The wall area around the doors and windows and along the ceiling should be cut in with a brush, this will prevent the wall from having an obvious and unsightly picture frame effect. Then, the main part of the wall can be painted with a roller, rolling into these areas.

Why do I need to use a primer?
Primers are specifically formulated to seal porous surfaces, block stains, as well as to insure the proper adhesion of the topcoat and produce the best possible coverage.

What is the proper order to follow when painting a room?
When painting a room, the ceiling should be painted first, followed by the walls, then the trim (including doors and windows) and finally the baseboards.

When should I apply?
Room and surface temperature should be between 50 and 85 degrees. Paint dries best between 65F and 85F. Allow at least 4 hours of drying time before recoating.

What is the proper rolling technique?
Fully load the roller with paint by dipping the entire cover deep into the tray of paint. Carry as much paint to the surface as possible. Make a letter “V” in a small 2 foot by 2 foot area with a generous roller load of paint. Fill in the “V”, spreading the paint evenly from left to right. Lightly smooth out with downward motions. Repeat “V” with a freshly loaded roller for every 2 x 2 foot area.

Cracking Flaking Interior Paint Solution

Cracking Flaking: The splitting of a dry paint film through at least one coat as a result of aging, which ultimately will lead to complete failure of the paint. In its early stages, the problem appears as hairline cracks; in its later stages, flaking occurs.

Possible Causes:

Use of a lower quality paint that has inadequate adhesion and flexibility.

Over thinning or overspreading the paint.
Inadequate surface preparation, or applying the paint to bare wood without first applying primer.

Excessive hardening and embrittlement of alkyd paint as the paint job ages.

Solution:

Remove loose and flaking paint with a scraper or wire brush, sanding the surface and feathering the edges. If the flaking occurs in multiple layers of paint, use of a filler may be necessary. Prime bare wood areas before repainting. Use of a top quality primer and top coat should prevent a recurrence of the problem.


Painting tips & tricks

Color Frequently asked questions

How do colors effect room size?
Generally, warm colors like reds, oranges, and yellows close in a space. Blues, greens, and violets tend to make a room look larger. Dark colors have a diminishing effect. Whites are always a good choice for making a room look larger.

My room has a chair rail and I am using two colors….?
This depends on the look you want to achieve. If you want an open, airy look, always paint the portion of the wall below the chair rail darker allowing the lighter color to dominate.

Should trim work be painted the same color as the walls…?
Use the same color to hide trim work, use a lighter or darker color to bring out the trim work and add highlights.

Will the paint I choose look lighter or darker on the wall?
Larger surfaces make the paint appear darker. As a general rule, always choose colors that are a shade or two lighter than what you want. Do keep in mind that colors can also appear lighter or darker depending on surrounding colors and lighting.

What is the best way to decide which color is best for my room?
Take color chips home to determine the color of your room. A nice technique is to hold the color chips in the daylight and at night so you will see how lighting will effect your color choices.

What color should I paint my ceiling?
White or off-white colors will create the illusion of having a higher ceiling and more open space. Whereas medium to dark colors will create the illusion of lowering the ceiling. Customarily, white or off-white tend to be used.

Will the paint actually match the color chip?
As a general rule, paint on a color chip will appear slightly lighter than when applied in a room. Always take into account the sheen of the paint, the lighting in the room, and other colors that are in the room.

Caulk Failures Interior Paint Solution

Caulk Failures: Loss of caulk’s initial adhesion and flexibility, causing it to crack and/or pull away from the surfaces to which it is applied.

Possible Causes:

Use of lower quality caulk.

Use of wrong type of caulk for particular application (e.g., using latex or vinyl caulk in areas where there is prolonged contact with water or considerable movement of the caulked surfaces).

Solution:

Use a top quality water-based all-acrylic or siliconized acrylic caulk if prolonged contact with water is not anticipated. These caulks are flexible enough to adapt to minor fluctuations in the substrate, stretching in gaps that widen slightly over time. They also adhere to a wide range of interior building materials, including wood, ceramic tile, concrete, glass, plaster, bare aluminum, brick and plastic — even in areas where moisture is present. Note: Silicone caulk should not be painted.


Painting tips & tricks

Rub petroleum jelly on the hinges and door knobs before you start to paint a door. If you get paint on them, they will wipe off easily.

To keep white paint from yellowing, add 2 drops of black paint to each Gallon of white.

When painting ceilings, cut a child’s rubber ball in half and put your paint brush in one of the halves to catch the drips.

An old pair of swimming goggles will protect your eyes from paint splatters and drips when painting ceilings.

When painting, protect your hands and face with moisturizer. Cleanup will be easier and the moisturizer will prevent paint from seeping into the pores.

To stop paint from dripping, punch a few holes in the rim of the paint can. When the brush is wiped against the edge, the paint flows back into the can. The lid covers the holes so the paint won’t dry out.

Before pouring paint from a can, cover the rim with masking tape. After pouring, remove the tape — the rim will be clean and the cover will fit tightly.

Burnishing Interior Paint Solution

Burnishing: Increase in gloss or sheen of paint film when subjected to rubbing, scrubbing or having an object brush up against it.

Possible Causes:

Use of flat paint in high trafficked areas, where a higher sheen level would be desirable.

Frequent washing and spot cleaning.
Objects (furniture, for example) rubbing against the walls.
Use of lower grades of paint with poor stain and scrub resistance (see Poor Stain Resistance and Poor Scrub Resistance.)

Solution:

Paint heavy wear areas that require regular cleaning (e.g., doors, window sills and trim with a top quality latex paint, because this type of paint offers both durability and easier cleaning capability. In high traffic areas, choose a semi gloss or gloss rather than a flat sheen level.

Clean painted surfaces with a soft cloth or sponge and non-abrasive cleansers; rinse with clean water.


Painting tips & tricks

Drying paint and the temperature
Paint in a ventilated and temperate space. When temperatures are between 10C and 32C there’s no risk, although 15c to 22C is ideal. Latex paint will dry in a few hours at this temperature. Oil-based paints will dry more rapidly in a warm, dry environment.

Wood preparation before painting
When we paint wood, we’re decorating it, but we can also protect it for good if the surface is prepared properly. New wood must be sanded along the grain. Painted or stained wood as well, unless you strip it down to its bare surface. Pores, screw and nail holes can be filled with plastic wood or joint compound, according to the case. Remove all accessories to minimize trimming. Paint over knots with orange shellac to hide them forever. Finally, be sure that the wood is dry and clean.

Painting old moldings
Over the years and after many coats of paint, door frames, windows and wall molding joints are no longer well defined and easy to trim. Carefully trace over the joints with a plasterboard knife using a yardstick if necessary. The traced cut will act as a paint dam? as long as you don’t use too much.

Paint without removing fixtures
To avoid having to remove fixtures before painting, particularly when the pieces are difficult to get off, nothing works like Vaseline petroleum jelly. Just spread it on the surfaces to be protected before starting to paint and when finished, clean the fixtures with a paper towel or a soft cloth.

Blocking Interior Paint Solution

Blocking: Undesirable sticking together of two painted surfaces when pressed together (e.g., a door sticking to the jamb).

Possible Cause:

Not allowing sufficient dry time for the coating before closing doors or windows.
Use of low quality semi gloss or gloss paints.

Solution:

Use top quality semi gloss or gloss acrylic latex paint. Low quality latex paints can have poor block resistance, especially in warm, damp conditions.

Follow paint label instructions regarding dry times. Acrylic latex paints generally have better early block resistance than vinyl latex paints, or alkyd or oil-based paints; however, alkyds develop superior block resistance over time. Application of talcum powder can relieve persistent blocking.


Painting tips & tricks

Helpful Tip
When taking a break, don’t leave your brushes or rollers sitting in paint. Cover trays with a damp rag.

Giving old wood a fresh look
Exterior wood siding can be painted, or stripped and painted. Strip paint using a torch by burning the old paint and scraping it lightly being careful not to damage the wood. Clean the surface with trisodium phosphate (TSP), which you can find in the paint department of your local home renovation centre. Repair siding where needed and caulk. If you are repainting in the same colour, apply the finishing coat after the wood is dry. If you are changing colours, apply a primer coat followed by the new colour, using exterior paint (an oil based primer will be necessary if going from oil to latex). Avoid painting in full sun, at sunset, in the early morning, in the rain or in the wind. To keep bugs from sticking to the fresh paint, simply add two tablespoons of citronella to the paint.

Finishing product: paint, stain, varnish, etc.
Different customers have different needs. No product meets every need. To select the appropriate product, start by identifying your needs based on the following specific criteria in order to create a “funnel” leading to your ideal product. The product selection process is simple, effective and based on eight product selection criteria: function, environment, surface, use, composition, appearance, colour and quality.

Masking knots before painting
Knots in finished wood will appear sooner or later after painting. Before painting, seal the knots with a lacquer. It is the only liquid sealant that will efficiently seal in knot resin, without discoloring the finishing paint.

Blistering Interior Paint Solution

Blistering: Bubbles resulting from localized loss of adhesion and lifting of the paint film from the underlying surface.

Possible Causes:

Applying oil-based or alkyd paint over a damp or wet surface.
Moisture seeping into the home through the exterior walls (less likely with latex paint).

Exposure of latex paint film to high humidity or moisture shortly after paint has dried, especially if there was inadequate surface preparation.

Solution:

If blisters do not go all the way down to the substrate: Remove

blisters by scraping and sanding, and repaint with a quality acrylic latex interior paint.

If blisters go down to the substrate: Remove the source of moisture, if possible. Repair loose caulking; consider installing vents or exhaust fans. Remove blisters as above, remembering to prime before applying the top coat.