Oak Bleeds Through Cabinet Painting Unless A Shellac Primer Stops It
Tannins in oak, cherry, walnut and mahogany travel up through a water-based primer and appear as blotches of pink, yellow or brown, usually at the edges first. A shellac-based primer is the one product that reliably blocks them. It dries in about twenty minutes, sands to a fine powder and gives the topcoat a hard, sealed base.
This is the step a cheap oak cabinet painting job skips, and the blotches show within weeks on a white or cream finish. On a navy or charcoal finish the bleed is less visible but the adhesion problem is the same. We use the shellac primer on every oak door, every time.
Grain Fill Is A Choice In Oak Cabinet Painting, And Both Answers Are Valid
Grain filler, brushed on thin two or three times and sanded to 320 grit, gives a smooth surface that reads like painted maple or MDF. Leaving the grain open gives a finish that is just as sound but shows the oak's texture through the colour. Some people want the smooth, factory look. Others like the texture, especially under a deeper colour where it reads as a feature.
Grain fill adds a day of labour and the quote shows it as its own line. It is the single biggest price difference between one oak cabinet painting quote and another, so ask what the other quote includes before comparing numbers.
Honey Maple And Cherry Cabinet Painting Skips The Filler
Honey maple from the 2000s, common in Grapeview and the newer streets of Western Hill, has a tight grain that needs no filler and paints cleanly over a standard primer. Cherry has the tannin problem oak does and gets the shellac primer, but its grain is closed enough to skip the filler. Both take the same thin sprayed topcoats of waterborne enamel or 2K polyurethane. If the doors are solid cherry or a good white oak and the finish is the only thing wrong, cabinet refinishing may be the better choice, and the visit is where we will tell you.
Oak Panels Move In Winter, And Cabinet Painting Has To Allow For It
Oak raised-panel doors are built with a floating centre panel, and St. Catharines winters with forced-air heat shrink that panel enough to show a hairline of bare wood at the edge. A flexible primer and thin topcoats handle that better than a thick, brittle film. Where a hairline does appear after the first winter, it is a touch-up and not a failure, and the written workmanship warranty covers it.