Is sanding to bare wood necessary or can I just buff and recoat my Calgary floors?

Whether you need to sand to bare wood or can simply buff and recoat depends on your floor's current condition, but most Calgary hardwood floors can benefit from a buff-and-recoat every 3-5 years without full refinishing. A buff and recoat (also called screen and recoat) costs $2-4 per square foot versus $3-6 per square foot for full refinishing, making it an excellent maintenance option for floors in decent condition.

Buff and recoat is ideal when your hardwood has minor surface scratches, dullness from foot traffic, or wear patterns in high-traffic areas, but the wood itself isn't damaged, stained, or deeply gouged. The process involves lightly abrading the existing polyurethane finish with a floor buffer and fine-grit screen (typically 120-150 grit), then applying 1-2 fresh coats of polyurethane. This refreshes the protective coating and restores the floor's shine without touching the actual wood.

You'll need full sanding to bare wood when there are deep scratches that penetrate through the finish into the wood, water stains or pet urine stains that have soaked into the wood, significant cupping or warping (common in Calgary homes without proper humidification), worn areas where the wood is exposed, or if you want to change the stain color. Full refinishing involves sanding through all finish coats and into the wood itself with progressively finer grits (36-40-60-80-100), then applying stain if desired and 2-3 coats of polyurethane.

Calgary's extreme dry climate affects this decision significantly. The chronic low humidity in Calgary homes (often 15-20% in winter) causes hardwood to shrink and develop gaps between boards. If your floors have noticeable seasonal gapping, a buff and recoat won't address the underlying wood movement — you may need full refinishing with gap filling, or better yet, installing a whole-home humidifier to maintain 35-45% relative humidity year-round. Additionally, Calgary's intense UV exposure at 1,045 metres elevation can cause uneven fading that only full sanding and restaining can correct.

The timing matters for Calgary homeowners. Plan refinishing work for late spring through early fall when indoor humidity is more stable. Winter refinishing in Calgary's extremely dry conditions can cause the polyurethane to cure too quickly, leading to lap marks and adhesion issues. Professional refinishers often run humidifiers during winter jobs to maintain proper curing conditions.

Professional assessment is recommended because what looks like surface wear might actually be deeper damage, and attempting a buff and recoat on floors that need full refinishing wastes money and delays the inevitable. A flooring professional can test-sand a small area to determine if the scratches and stains will come out with light screening or require full sanding. Most Calgary flooring contractors offer free assessments for refinishing projects.

For DIY consideration: Buff and recoat can be a DIY project for handy homeowners with the right equipment rental, but full refinishing requires professional drum sanders and edgers that can permanently damage floors in inexperienced hands. The dust control systems used by professionals are also crucial in Calgary's dry climate to prevent respiratory issues and minimize cleanup.

Need help finding a flooring professional for an assessment? Calgary Floor Installers can match you with experienced refinishing contractors who understand how Calgary's climate affects hardwood maintenance and can recommend the best approach for your specific floors.