How do I deal with peeling paint on soffit and fascia boards on my NB home?

Peeling paint on soffits and fascia is one of the most common exterior painting problems on New Brunswick homes, and it almost always comes back to moisture — either from inadequate attic ventilation, ice dam leakage, or paint applied over damp wood. Getting a lasting result means fixing the moisture source first, not just scraping and repainting.

NB’s climate is brutal on these areas. Winter ice dams force meltwater up under shingles and into fascia boards. Spring thaw saturates unprotected soffit vents with moisture. Summer humidity keeps north-facing and tree-shaded soffits damp for weeks at a time. When paint is applied over wood with moisture content above 15%, or when moisture migrates through the wood from the attic side, the paint lifts and peels no matter how good the product is.

Before picking up a scraper, inspect your attic ventilation. Blocked soffit vents, insufficient ridge venting, or a poorly vapour-barriered ceiling force humid air into the wood from inside — and no amount of exterior paint will stop that cycle. Fix the ventilation, and the peeling problem often solves itself.

Prep is the entire job for soffits and fascia. Start by scraping all loose, flaking, and bubbling paint down to a firm edge using a stiff scraper and a detail sander or oscillating tool for the wood grain. Sand the scraped areas smooth (80-grit, then 120-grit). Check for soft or punky wood — any rot must be repaired with exterior wood filler or epoxy consolidant before painting. Fill all nail holes and cracks with paintable exterior caulk, and re-caulk any gaps where fascia meets trim or soffit.

Prime all bare wood immediately — do not leave bare soffits or fascia exposed overnight, especially in the damp springs common in Moncton, Fredericton, and the St. John River valley. Use an oil-based or high-adhesion acrylic exterior primer on bare spots. If you see grey or black staining (mildew), treat with a diluted bleach solution (1 part bleach to 3 parts water) and let it dry fully before priming. Painting over mildew seals it in and it grows right through your new topcoat within one season.

For the topcoat, use a 100% acrylic latex exterior paint — $55-80/gallon for a premium product. Semi-gloss sheen is standard for soffits and fascia: it’s washable, mildew-resistant, and stands up to moisture better than eggshell or flat. Two coats minimum, applied in dry weather with temperatures above 10°C.

A professional painter typically charges $1,500-4,000 for soffit, fascia, and trim-only exterior work on an average NB home, depending on height, linear footage, and condition. If your boards have extensive soft spots and peeling, or if the home is a full two-storey with steep rooflines, working at height safely requires scaffolding or extension ladders — that’s when it’s worth hiring a professional.

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