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Deck & fence care

Plan the finish, assess the existing wood, and choose preparation and finishing products for your deck or fence. Each finish has its own surface, moisture and weather requirements.

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Thunder Bay climate normals, 1991-2020. Environment and Climate Change Canada

Preparation / Products / Advice

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Selections follow this month’s project phase and reviewed product guidance. Confirm the forecast, actual surface conditions and availability before starting.

WOOD WASH
Application conditionsManufacturer guidance
Air temperature
Check manufacturer instructions
Surface temperature
Check manufacturer instructions

Manufacturer sheet reviewed: use above 10°C on a dry substrate. The sheet does not distinguish air from surface temperature, so no separate numeric air or surface bound is published here. Avoid direct sunlight and keep the cleaner wet while it works; never let it dry on the wood. Rinse thoroughly and let the wood dry completely before Wood Lightener, then dry completely before sanding. No maximum temperature, measured wood-moisture limit or weather-free interval is specified.

Manufacturer guidance Reviewed 2026-10-24 · CA
WOOD LIGHTENER
Application conditionsManufacturer guidance
Air temperature
Check manufacturer instructions
Surface temperature
Check manufacturer instructions

Manufacturer sheet reviewed: apply to a dry substrate strictly above 10°C. The strict threshold is recorded here rather than as an inclusive minimum. Avoid direct sunlight, allow 5–15 minutes of working time and do not let the solution dry. Rinse thoroughly and allow the wood to dry completely before continuing. No air-temperature bound, maximum surface temperature, measured wood-moisture limit or weather-free interval is specified.

Manufacturer guidance Reviewed 2026-10-24 · CA
Sansin DEC Deck Stain
Application conditionsManufacturer guidance
Air temperature
Check manufacturer instructions
Surface temperature
Check manufacturer instructions
Ideal temperature
21°C
Maximum wood moisture
21%

Ideal conditions are approximately 21°C and 50% relative humidity. Do not apply if rain or near-freezing temperatures are expected. Drying and recoating take longer in cool or humid conditions. A hard application minimum and maximum are not specified in the checked guidance.

Manufacturer guidance Reviewed 2026-10-24 · CA
DEC TOPCOAT
Application conditionsManufacturer guidance
Air temperature
Check manufacturer instructions
Surface temperature
Check manufacturer instructions
Ideal temperature
21°C
Rain-free window
24 hours
Protect from freezing
24 hours

Manufacturer sheet reviewed: the ideal application temperature is 21°C at approximately 50% relative humidity. Do not apply in the heat of the day or direct sunlight. Rain and near-freezing temperatures must not be likely within 24 hours after application. No hard numeric air or surface minimum/maximum or measured wood-moisture limit is specified. The 10–30°C range in the sheet is for storage. Drying and recoating times depend on conditions.

Manufacturer guidance Reviewed 2026-10-24 · CA
SICO ProLuxe Premium Deck Wood Finish
Application conditionsManufacturer guidance
Air temperature
10°C to 32°C
Surface temperature
10°C to 32°C
Rain-free window
48 hours
Maximum wood moisture
18%

Canadian SIK44078-series sheet: apply with air and surface at 10–32°C; keep the surface at least 3°C above the dew point. Avoid direct sunlight and late-day condensation. Do not apply if rain, snow or temperatures below 4°C are forecast within 48 hours. Wood must be dry with moisture at 18% or less. The sheet does not state a separate period to maintain the full application range. Cold, high humidity, thick coats and poor ventilation extend drying; allow at least 24 hours before the second coat.

Manufacturer guidance Reviewed 2026-10-24 · CA
SharkSkin® Solid Hide Deck & Siding Stain
Application conditionsManufacturer guidance
Air temperature
10°C to 30°C
Surface temperature
10°C to 30°C
Rain-free window
6 hours
Conditions after application
6 hours

Canadian SharkSkin Solid Hide 72403 / 72401 / 72404 instructions (2025-03-14): keep air and surface within 10–30°C for at least 6 hours after application. Do not apply within 6 hours before or after rain. Relative humidity must not exceed 85%. Work in dry conditions and avoid direct sun. These limits do not apply to SharkSkin Translucent.

Manufacturer guidance Reviewed 2026-10-24 · CA
SharkSkin® Translucent Exterior Wood Stain
Application conditionsManufacturer guidance
Air temperature
Check manufacturer instructions
Surface temperature
Check manufacturer instructions

The current English TDS does not publish numeric air or surface application limits. Wood or composite moisture must be strictly below 14%, measured with a moisture meter; this strict condition is recorded here rather than as an inclusive maximum. Avoid hot sun. Apply one coat to clean, thoroughly dry, bare wood. Allow 24 hours before light foot traffic and 48 hours before replacing furniture or barbeques. These waits are not a rain-free window. No numeric rain-free or post-application temperature interval is specified.

Manufacturer guidance Reviewed 2026-10-24 · CA
Project research and manufacturer references
Local knowledge / Practical advice

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