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Exterior painting

Refresh siding, trim, doors or a shed with a finish suited to the surface. Start with assessment and preparation, then check the selected paint’s temperature, rain and curing instructions.

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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.

WeatherOne® CoverCoat 100% Acrylic Exterior Finish, Flat
Application conditionsManufacturer guidance
Air temperature
At least 5°C
Surface temperature
Check manufacturer instructions
Conditions after application
4 hours

Apply at air temperatures of at least 5°C. Do not apply above 85% relative humidity or when temperatures are forecast to fall below 5°C within 4 hours after application. Use a clean, dry, properly prepared surface. No maximum air temperature, separate surface-temperature bound or numeric rain-free period is specified in the current English TDS. Drying times are given at 25°C and 50% relative humidity, which are reference conditions rather than an ideal application temperature.

Manufacturer guidance Reviewed 2026-10-24 · CA
WeatherOne® CoverCoat 100% Acrylic Exterior Finish, Satin
Application conditionsManufacturer guidance
Air temperature
At least 5°C
Surface temperature
Check manufacturer instructions
Conditions after application
4 hours

Apply at air temperatures of at least 5°C. Do not apply above 85% relative humidity or when temperatures are forecast to fall below 5°C within 4 hours after application. Use a clean, dry, properly prepared surface. No maximum air temperature, separate surface-temperature bound or numeric rain-free period is specified in the current English TDS. Its 25°C and 50% relative-humidity drying conditions are not an application range.

Manufacturer guidance Reviewed 2026-10-24 · CA
WeatherOne® CoverCoat 100% Acrylic Exterior Finish, Semi-Gloss
Application conditionsManufacturer guidance
Air temperature
At least 10°C
Surface temperature
Check manufacturer instructions
Conditions after application
4 hours

Follow the current 02123 technical-sheet restrictions: apply at 10°C or warmer, with no forecast below 10°C within 4 hours after application. Do not apply above 85% relative humidity. Use a clean, dry, properly prepared surface. Both the English and French technical sheets prohibit application below 10°C. The English recommended-use text also mentions above 5°C, and an older family sell sheet advertises 2°C; these lower claims have not been clarified by Cloverdale and do not replace the stricter product-specific restrictions used here. No separate numeric surface-temperature limit, maximum application temperature or fixed rain-free interval is specified. Follow the current container label and complete coating-system instructions.

Manufacturer guidance Reviewed 2026-10-24 · CA
Guardian 100% Acrylic Exterior Finish, Satin
Application conditionsManufacturer guidance
Air temperature
Check manufacturer instructions
Surface temperature
Check manufacturer instructions
Conditions after application
4 hours

Apply above 3°C; the current English TDS also says not to apply when air is below 3°C. Do not apply above 85% relative humidity or when temperatures are forecast to drop below 3°C within 4 hours. Use a clean, dry, properly prepared surface. No maximum air temperature, general surface-temperature bound or numeric rain-free period is specified. For concrete masonry units, block filler or masonry surfacer is a separate preparation step requiring air, surface and material temperatures of at least 10°C; let it dry before this topcoat.

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

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550 Fort William Road
Thunder Bay, Ontario

Call 807-345-4511 ↗

550 Fort William Road, Thunder Bay

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