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.