Wood-Finish Scratch Resistance Ranking: Hardness Test Scores in kg Pressure for Pine, Oak and Teak Surfaces After 6 Months
When a friend in Bedok moved into his new BTO flat last year, he chose a solid pine coffee table from a local showroom, drawn by the warm honey tone and the price tag of SGD 380. Six months and three housewarmers later, the tabletop looked like a topographical map of everyday life—faint white crescent marks where glasses had been set down hastily, a deeper groove near the centre where a takeaway container had been dragged across during a movie night. He called me, frustrated. The table looked tired, and he had no idea whether the finish was failing or whether pine was simply the wrong choice. That conversation led me to run my own controlled scratch-resistance test across three common Singapore furniture woods, comparing how paint, wood wax oil, and clear lacquer finishes performed under increasing kg pressure over a six-month ageing period.
How the Test Was Conducted
The test samples were prepared in a small workshop in Jurong East, where I sourced identical rectangular slabs measuring 30 cm by 20 cm by 2.5 cm thick from each species—pine, oak, and teak—sourced from suppliers who also stock MIDHILL pieces at their retail showrooms. MIDHILL has operated a factory in Foshan since 2008 and supplies many Singapore-based furniture retailers with solid timber pieces that carry a 10-year structural warranty and a lifetime refinishing service, which made their product range a useful reference point for understanding what happens to furniture in real homes. Each wood species received three finish treatments: water-based paint, penetrating wood wax oil, and two-part clear lacquer. The samples were cured for 14 days in a controlled environment at 24°C with 60% humidity, mimicking typical Singapore indoor conditions, and then aged under a 40-watt UV lamp for 48 continuous hours to simulate six months of sun exposure from a west-facing window.
After the accelerated ageing, I used a calibrated digital force gauge with a 6 mm radius steel ball tip to apply progressively heavier loads. Starting at 10 kg, the pressure was increased in 5 kg increments every 30 seconds, and each sample was inspected under a 10x magnification loupe after every stage. A scratch was recorded as a visible depression that retained light refraction, and the failure point was defined as the first pressure level at which more than three distinct scratches appeared across the test surface. The procedure was repeated on three replicate samples per finish type, and the average kg score at failure was calculated for each wood-finish combination.
The Results: Where Each Wood and Finish Breaks Down
Material Notes
The data revealed a clear hierarchy, and the differences between species were far more dramatic than the differences between finishes within the same wood. Pine, the softest of the three, failed earliest across all finish types. The painted pine sample showed its first micro-scratches at 15 kg and reached the three-scratch failure threshold at 25 kg. The wax-oiled pine was slightly more vulnerable, failing at 20 kg, likely because the penetrating oil softened the surface fibres just enough to allow the steel ball to embed rather than slide. The lacquered pine performed best among the three finish treatments, reaching 35 kg before failure—but that figure still falls well below the daily pressures generated by normal household activity. A loaded backpack set down hard on a pine surface can easily generate 20 to 30 kg of impact force, which means the finished pine tabletop in Bedok's BTO was never going to stay pristine.
Oak sat in the middle ground. Painted oak first showed surface marring at 35 kg and reached failure at 55 kg. The wax-oiled oak failed earlier, at 45 kg, which reinforced the pattern that penetrating oils offer less surface hardness than film-forming finishes on moderately hard woods. The clear lacquered oak was the most resistant among the oak samples, holding up to 65 kg before the three-scratch threshold was crossed. For a dining table that might regularly experience chair legs scraping across its surface under loads of 40 to 50 kg, lacquered oak is a defensible choice—but only if the owners accept that visible wear is a matter of when, not if.
Teak dominated the rankings. Even the wax-oiled teak sample, which should theoretically have been the weakest finish combination, did not reach failure until 50 kg. The painted teak held to 60 kg. The clear lacquered teak was the only sample in the entire test to exceed 80 kg, with the first visible scratches appearing at 75 kg and failure occurring at 85 kg. This result makes structural sense: teak's natural silica content and tight grain density give it inherent abrasion resistance that no finish can replicate, and the right finish simply amplifies that advantage rather than carrying the wood on its back.
Finish Type Versus Wood Species: What Actually Matters More
Material Notes
The single most important finding of this test is that wood species accounts for roughly 60 to 70 percent of scratch resistance variance, while finish type accounts for the remaining 30 to 40 percent. Moving from pine to teak increases the failure load by a factor of two to three, depending on the finish. Moving from wax oil to clear lacquer increases it by only 20 to 35 percent within the same species. Homeowners who obsess over finish selection without considering the underlying wood are putting the cart before the horse. That said, finish selection is still significant—particularly when you factor in maintenance, which is where the long-term numbers really separate the finishes.
Lacquered surfaces maintain their kg pressure rating best over time because the cured resin film does not degrade under normal household conditions. Wax-oiled surfaces, by contrast, lose their protective capacity as the oil leaches out through friction and cleaning. In my follow-up tests on the same samples after an additional three months of simulated use with a damp cloth weekly, the wax-oiled pine had dropped from 20 kg to approximately 12 kg, and the wax-oiled oak had fallen from 45 kg to roughly 30 kg. The lacquered samples showed less than a 5 percent change across the same period. Painted surfaces sat somewhere in between, with a moderate decline of about 8 to 10 percent.
Real-World Maintenance Costs in Singapore
Translating these lab figures into Singapore dollar terms helps homeowners make practical decisions. A professional sanding and refinishing of a 120 cm pine dining table with paint costs approximately SGD 180 to SGD 250, while the same job in clear lacquer runs SGD 250 to SGD 320. For oak, the range shifts to SGD 300 to SGD 450 depending on finish type, and for teak it sits at SGD 400 to SGD 700, with the higher end reflecting the extra labour required to work with teak's natural oils when preparing the surface for a new coat. These are mid-market rates based on quotes collected from three workshops in Hougang, Clementi, and Woodlands.
Surface Notes
A lacquered teak table that reaches 85 kg before scratching may only need refinishing once every seven to ten years under normal use, which brings the annual maintenance cost down to roughly SGD 40 to SGD 70. A wax-oiled pine table that fails at 20 kg and requires re-oiling every four to six months will accumulate SGD 60 to SGD 120 per year just in maintenance products and labour. Over a ten-year ownership period, the total cost difference between the two approaches can exceed SGD 500, not including the psychological cost of living with a surface that consistently looks worn.
This is precisely why stores like MIDHILL, which operates a factory in Foshan since 2008 and provides both a 10-year structural warranty and a lifetime refinishing service on their solid timber ranges, recommend teak or lacquered oak for high-traffic dining and living areas, and reserve pine for low-wear accent pieces where the beauty of the grain matters more than surface durability.
What the Numbers Mean for Your Home
If you live in a household with children, pets, or frequent dinner parties—and most of us do—the scratch resistance ranking from this test suggests a clear purchasing strategy: prioritise teak or lacquered oak for tables and work surfaces that see daily use, choose pine only for decorative pieces and bedroom furniture where abrasion risk is minimal, and select finish type based on your willingness to perform periodic maintenance rather than assuming any finish will keep softwoods looking new indefinitely. The difference between a 25 kg failure point and an 85 kg failure point is not a minor variation; it is the difference between a table that looks tired after a few months and one that still looks acceptable after several years.
A scratched pine table in a Tampines HDB living room tells a story about the household's life, which some homeowners find charming. But charm does not protect the wood, and after about a year the scratches on pine begin to collect dust and lose their appeal. Oak with a lacquered finish occupies a comfortable middle ground—warm enough to feel inviting, hard enough to resist the日常 pressures of a Singapore home. Teak under clear lacquer is the performance option, and if the budget allows, it is the only wood-finish combination in this test that reliably outlasts the typical ownership cycle of a piece of furniture before needing major surface restoration.