Parging consists of Portland cement, hydrated lime, fine sand, and water. Modern applications often include polymer additives to improve adhesion and flexibility. The typical ratio is approximately 1 part cement, 2-3 parts sand, with lime added for workability.

Quality parging typically lasts 15-25 years with proper application and maintenance. Lifespan depends on climate conditions, foundation movement, drainage, and the quality of initial installation.

While possible, parging requires specific skills for surface preparation, proper mixing, and application technique. Poor DIY application often leads to adhesion problems, cracking, and moisture issues. Professional application ensures proper materials, technique, and longevity.

Common causes include freeze-thaw cycles, foundation settlement, poor surface preparation, incorrect mix ratios, and rapid drying. Ontario's climate makes proper application timing and quality materials essential for crack prevention.

Replace parging when you notice widespread cracking, large areas flaking off, hollow sounds when tapped, or visible moisture penetration. Small cracks can often be repaired, but extensive damage requires complete renewal.

Parging provides moisture resistance but is not a complete waterproofing solution. It helps shed water and reduces moisture penetration, but foundations with significant water issues may require additional waterproofing measures.

Yes, parging can include various textures and finishes for decorative appeal. Options include smooth, textured, stamped patterns, or colored additives. Decorative parging combines protection with enhanced curb appeal.

Parging is typically applied to foundation walls and concrete blocks in thin coats (3-6mm), while stucco is a thicker coating system (15-25mm) used on above-grade walls. Stucco often includes multiple layers and mesh reinforcement.

Annual visual inspections, prompt crack repair, maintaining proper drainage around foundations, and avoiding impact damage. Clean gutters and ensure water flows away from the foundation to prevent moisture-related deterioration.

Parging should not be applied when temperatures are below 5°C or when freezing is expected within 24 hours. Cold weather can prevent proper curing and cause frost damage. Spring and fall are optimal application seasons in Ontario.

Typical parging thickness ranges from 3-6mm (1/8 to 1/4 inch). Thicker applications may crack due to shrinkage, while thinner coats may not provide adequate protection. Professional assessment determines optimal thickness for each situation.

Surface must be clean, sound, and slightly damp. Remove loose material, repair cracks, clean with wire brush or pressure wash, and apply bonding agent if needed. Proper preparation is crucial for long-lasting adhesion.