What type of drywall is best for bathrooms?

For bathroom renovations in Ottawa, moisture-resistant drywall (often called "green board") or cement board are your best options, with the choice depending on the specific area and your budget.

When renovating bathrooms, standard drywall simply won't hold up to Ottawa's humidity levels and temperature fluctuations. Moisture-resistant drywall features a water-repellent core and green-colored paper facing that resists mold and moisture better than regular drywall. This works well for most bathroom areas that don't receive direct water contact, like ceilings and walls away from the shower or tub. Expect to pay about $15-25 per sheet compared to $12-18 for standard drywall in the Ottawa market.

For areas with direct water exposure, cement board (like HardieBacker or Durock) is the gold standard. This fiber-cement product is completely waterproof and provides an ideal substrate for tile installation around tubs, showers, and behind sinks. While more expensive at $25-40 per sheet, cement board prevents the costly moisture damage we frequently see in Ottawa homes, especially in older properties where bathroom ventilation wasn't originally designed for modern usage patterns.

Purple board (mold-resistant drywall) has gained popularity recently and offers superior mold resistance compared to green board, making it excellent for Ottawa's climate where basements and bathrooms can experience significant humidity swings. The antimicrobial treatment in the gypsum core actively resists mold growth, which is particularly valuable in homes without adequate bathroom ventilation.

Installation considerations for Ottawa homes include ensuring proper vapor barriers behind the drywall, especially in older homes where exterior walls may lack modern moisture management. The Ontario Building Code requires bathroom exhaust fans rated for the room size, and proper drywall selection works hand-in-hand with adequate ventilation. In heritage homes downtown, we often encounter plaster walls that need complete replacement with modern moisture-resistant materials.

Professional guidance is recommended for bathroom drywall installation because improper moisture barriers or ventilation can lead to expensive mold remediation down the road. While DIY installation is possible, ensuring proper sealing around electrical boxes, ventilation fans, and plumbing penetrations requires experience to prevent future moisture issues.

For a comprehensive bathroom renovation that includes proper moisture-resistant drywall installation and ventilation planning, contact Justyn Rook Contracting for a free consultation tailored to your specific Ottawa home's needs.