Exterior issues

Stains that come from waxy substances in the reconstituted wood products used to make hardboard siding. When the substrate is painted, these staining substances bleed through the paint; they can even bleed through some ordinary primers, possibly causing dirt pickup,...

Warping or buckling of vinyl siding panels that have been repainted. Possible causes: Most likely cause is that vinyl siding was repainted with a darker colour paint than the original colour. Dark paint tends to absorb the heat of the...

Brownish or tan discoloration on the paint surface due to migration of tannins from the substrate through the paint film. Typically occurs on “staining woods,’ such as redwood, cedar and mahogany, or over painted knots in certain other wood species....

Deterioration of the paint film, resulting in excessive or rapid loss of lustre of the top coat. Possible causes: Use of an interior paint outdoors. Use of a lower quality paint. Use of a gloss alkyd or oil-based paint in...

Paint that has lost its adhesion to a galvanized metal substrate. Possible causes: Improper surface preparation, such as inadequate rust removal. Failure to apply a primer before application of an oil-based or vinyl latex paint. Failure to sand baked-on enamel...

Colour loss and overall deterioration of paint film on fresh masonry. Possible causes: Oil-based paint or vinyl acrylic latex paint was applied to new masonry that has not cured for a full year. Fresh masonry is likely to contain lime,...

Loss of paint due to poor adhesion. Where there is a primer and top coat, or multiple coats of paint, peeling may involve some or all coats. Possible causes: Seepage of moisture through uncaulked joints, worn caulk or leaks in...