Start with Structure, Not Surface
The most common mistake when looking at antique furniture at a market is focusing on the surface finish before checking the structural condition. A piece can be stripped and refinished relatively straightforwardly; a piece with a failed mortise-and-tenon joint or a split primary rail requires either significant carpentry skill or professional repair. Understanding which category a piece falls into determines whether the price is reasonable for its actual restoration potential.
The evaluation sequence that follows moves from structural to surface, which is the order of importance for someone planning to restore a piece rather than simply display it as-found.
Structural Integrity
Joints
Traditional furniture joinery — mortise-and-tenon, dovetail, dowel, and wooden pin — was designed for wood movement and, when intact, is extremely durable. Failed joints are a different matter. Check each joint by applying gentle lateral pressure. Any movement beyond a few millimetres suggests the joint has failed or the glue has degraded. Failed joints on chairs are especially common: the stress points at the rear leg-to-seat rail connections take the most force in normal use and often fail first.
A failed joint on a table or case piece (cabinet, chest, dresser) is generally easier to address than a failed chair joint, because the geometry of chairs makes re-gluing and clamping more complicated. If multiple chair joints are loose, budget for either a full disassembly and re-glue — which requires the right clamps, a warm working space, and patience — or a professional repair.
Primary Wood: Splits, Warps, and Checks
Run a hand along the primary surfaces of the piece with your eyes closed. Warped drawer bottoms and panel backs are almost impossible to fully flatten; they can be shimmed and lived with, but rarely fully corrected. A crack running along the grain in a tabletop (called a check) may be stable and cosmetically acceptable, or it may be active — meaning it will continue to expand. Press gently across the crack. If you can feel movement, the check is likely still active.
Splits that run across the grain rather than along it are more serious. Cross-grain splits are caused by stresses the wood couldn't accommodate, and they rarely stay static.
Feet and Bottom Rails
The bottoms of case pieces and the feet of chairs and tables are the parts most likely to have water damage. Antique furniture stored in damp basements or on stone floors frequently shows rot, staining, or insect damage at the lowest points. Lift the piece slightly or tilt it to check. Soft, discoloured wood at the feet often indicates moisture damage that extends further up than it appears.
Identifying the Wood Species
Knowing what wood a piece is made of matters for restoration: different species absorb stain differently, have different grain characteristics, and respond differently to finishing products. In Canadian antique furniture from the 19th and early 20th century, the most common species are:
- Black walnut: Dark brown, with a straight to slightly wavy grain. Dense and hard. Takes oil finishes well. Common in better-quality Ontario furniture from the 1860s–1910s.
- Butternut: Lighter brown than walnut, softer, with a more open grain. Sometimes called "white walnut." Common in Quebec and Ontario rural furniture. Often stained darker to imitate walnut.
- Pine: Ranges from white pine (soft, light-coloured, wide grain) to yellow pine (harder, resinous). Extremely common in Canadian country furniture. Pine surfaces show every scratch and dent, which is part of their character but a consideration for restoration.
- Cherry: Reddish-brown, fine-grained, darkens significantly with light exposure. Used in better-quality pieces, particularly in Ontario and Quebec.
- Maple: Hard, pale, close-grained. Used extensively for chair legs, spindles, and turned elements. Takes paint well, which is why many antique chairs with maple frames were originally painted.
- Birch: Similar to maple, often used as a substitute. Difficult to distinguish from maple without close examination of the end grain.
Secondary woods — the wood used for drawer sides, backing boards, and internal structure — often differ from the primary wood. Recognizing this is a useful dating indicator: specific combinations of primary and secondary woods were characteristic of particular periods and regions.
Reading the Finish
The existing finish on a piece tells you something about its history and determines your options for restoration. The three most common finish types on Canadian antique furniture are shellac, varnish, and paint.
Shellac
Shellac was the dominant furniture finish in North America from roughly the 1820s through the 1920s. It dissolves in alcohol, which makes it easy to identify: apply a small amount of denatured alcohol to an inconspicuous spot with a cotton swab. If the finish softens and picks up on the swab, it's shellac. This is important because shellac is one of the easiest finishes to work with — it can be dissolved and reapplied, patches blend well, and it responds predictably to stripping.
Varnish and Lacquer
Early oil-based varnishes (pre-1930s) are harder to dissolve than shellac and often appear as a thick, yellowed, somewhat brittle film. They crack in characteristic patterns — sometimes called "alligatoring" — when they've aged and become inflexible. Nitrocellulose lacquer, which came into wide use in the 1920s–1940s, dissolves in lacquer thinner. Later polyurethane and conversion varnish finishes from the mid-20th century onward are generally the hardest to remove and require either chemical stripping or mechanical abrasion.
Paint
Many antique chairs, country tables, and case pieces were originally painted rather than finished with a clear coat. Old milk paint — a paint made from casein protein and pigment, used widely before oil-based paints — has a distinctive matte, slightly chalky surface and is extremely durable. It does not respond to standard paint strippers; it typically needs mechanical removal or lye-based stripping.
Multiple paint layers on a single piece are common. Each layer represents a period in the piece's history. Whether to strip down to bare wood or preserve and work with the paint layers is a decision that depends on the piece's significance and your intentions for it.
Signs of Previous Repair
Most antique furniture has been repaired at some point. The question is whether the repairs were well-executed and are stable, or whether they are failing and will need to be addressed before you can proceed with restoration.
Filled Cracks and Holes
Look for colour variation in the wood surface that follows a crack or void shape — this indicates a previous fill. Older fills using beeswax or putty often shrink over time and may need to be raked out and replaced. Wood-tone fillers from the mid-20th century are generally harder and more stable but may not match the wood colour well after refinishing.
Replacement Parts
Running a flashlight along the underside of a piece — along the bottom of drawer rails, the underside of table tops, the backs of case pieces — reveals a lot. Inconsistent wood colour, different grain patterns, or obviously newer screws and fasteners indicate replacement parts. Replacement parts are not necessarily a problem, but knowing they're there prevents surprises during restoration when the colour match under stripping doesn't match expectations.
Previous Refinishing
If the piece has been refinished before, the original surface patina — the accumulated effect of age, use, and original finishing — has been disrupted or removed. This matters more for pieces of significant age or collector interest than for functional restoration work. For pieces you intend to use, a previous refinish is simply a layer you'll be working through.
A Quick Checklist for Market Evaluations
- Check all joints for movement under gentle lateral pressure
- Look at feet and bottom rails for moisture damage
- Examine tabletops and panel boards for warping and active cracks
- Identify the primary and secondary wood species
- Identify the finish type (alcohol test for shellac)
- Check for previous fills, replaced parts, and prior refinishing
- Assess drawer fit — loose or jammed drawers indicate humidity history
- Look for insect damage (small round exit holes in the wood surface)
For further reading on wood identification in Canadian furniture, Library and Archives Canada holds reference materials on furniture construction and design history.
Once you've acquired a piece worth working on, the wood restoration and refinishing guide covers the process from stripping to final finish application.