EXTERIOR PAINTING

EXTERIOR PAINTING — WHAT ACTUALLY MATTERS

Exterior coatings in Ontario have a hard life. A single year puts a building envelope through freeze-thaw cycling, UV exposure, driving rain, ice, road salt spray and a 60-degree temperature swing. That is why P&G Renovation treats exterior painting as a building-protection job first and a cosmetic job second. We serve Newmarket, Aurora, Barrie, Toronto, North York, Richmond Hill, Vaughan and Markham, and on every exterior we start by identifying why the previous coating is failing before we spec the new one.

Peeling on the south and west elevations usually means UV degradation and inadequate film build. Peeling in sheets down to bare wood usually means moisture is entering behind the coating — failed caulking, a leaking gutter, missing flashing, or grade too high against the siding. Chalking on aluminium or older acrylic means the binder has broken down and needs a bonding primer. Efflorescence and spalling on brick or block means water and salt migration, which has to be corrected before coating or the new paint will lift the same way. We document what we find and tell you which repairs are inside our scope and which need a roofer, mason or eavestrough contractor first.

Preparation is where the majority of exterior labour goes. Every surface is pressure washed at the correct PSI for the substrate — high enough to remove chalk, dirt, mildew and loose coating, low enough not to drive water behind siding or erode mortar joints. Mildew is treated with a bleach or dedicated biocidal wash, not just blasted. Loose paint is scraped and feather-sanded to a sound edge. Bare wood is spot-primed within 48 hours of exposure. Failed caulking is cut out and replaced with high-performance urethane or siliconized acrylic at every window, door, trim joint and penetration. Rusted railings, lintels and steel are wire-wheeled or ground to bright metal and primed with a rust-inhibitive direct-to-metal primer.

We schedule around weather rather than against it. Most premium exterior acrylics need surface and ambient temperatures above 10°C, though some modern low-temperature formulations apply reliably down to 2°C, which extends our season into late fall. We do not paint in direct blazing sun on a hot elevation — the film skins before it levels — and we watch dew point in the fall so a fresh coat is not still open when overnight moisture settles. That discipline is the difference between a coating that hits its full ten to fifteen year service life and one that fails in three.

Exterior work covers more than walls: siding, brick, stucco and parging, fascia and soffit, eaves, window and door trim, garage doors, railings, columns, decks, fences and porch floors. Decks and fences are cleaned, brightened and finished with penetrating stains rather than film-forming paint wherever traffic and moisture would otherwise cause peeling. Commercial and institutional exteriors add hollow metal doors and frames, structural steel, bollards, anti-graffiti coatings and line marking to that list.