What deck stain brands are best for NB's climate — Cabot, Olympic, or Benjamin Moore Arborcoat?

All three are solid brands, but for New Brunswick's demanding climate of freeze-thaw cycles, Maritime humidity, and salt air exposure, Benjamin Moore Arborcoat and Cabot Australian Timber Oil (for semi-transparent) or Cabot Solid Stain consistently earn top marks from NB painting professionals. Olympic stains are widely available and a reasonable mid-range choice, but Arborcoat and Cabot have stronger track records in cold, wet Maritime climates.

Benjamin Moore Arborcoat is arguably the premium choice in the NB market. It's a waterborne alkyd formula — which means it has the penetration and adhesion advantages of an oil-based product but cleans up with water and meets VOC regulations. Arborcoat is available in solid, semi-transparent, and clear finishes. The solid stain version is particularly well-regarded for older decks with weathered or uneven wood, as it provides excellent hiding power and adheres well even to previously stained surfaces. Arborcoat semi-transparent is beautiful on new cedar and pressure-treated lumber, and holds its colour well through NB summers. Expect to pay 5-80 per gallon at Benjamin Moore dealers in Moncton, Fredericton, and Saint John.

Cabot has a long history in Maritime Canada, and their Australian Timber Oil is a favourite for new cedar and mahogany decks where you want to preserve the natural wood tone. It penetrates deeply and provides excellent water repellency. Cabot's solid deck stain is also competitive with Arborcoat in terms of durability, and tends to be slightly easier to find at some NB hardware and paint stores. Cabot products run 0-70 per gallon depending on the product line.

Olympic stains, available at hardware stores across NB, are a reasonable option for cost-conscious projects — particularly Olympic MAXIMUM, which has a decent track record. However, in NB's freeze-thaw environment, the mid-range penetrating stains in this line tend to show wear after 2 seasons on fully exposed deck surfaces. For a protected deck or a fence, Olympic performs well enough. For an exposed south-facing deck in Fredericton or a coastal deck in Shediac, investing in Arborcoat or Cabot pays off in fewer recoat cycles.

A few things matter as much as brand selection: proper surface prep, applying at the right temperature (10-27°C, no rain in the forecast for 48 hours), and not over-applying — thin, even coats absorb far better than heavy flooding. Whatever product you choose, follow the manufacturer's coverage rate. Most premium deck stains cover 100-150 square feet per litre for a semi-transparent, or 80-120 square feet per litre for a solid stain.

If you're unsure which product is right for your specific wood type, existing finish, and exposure, the staff at independent Benjamin Moore dealers in NB are generally very knowledgeable — it's worth a conversation before you buy.

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