By Bridget O’Flaherty, EnviroCentre
Revitalizing older brick and stone homes in neighborhoods like Lowertown for enhanced energy efficiency involves a strategic approach that combines modern sustainability with the preservation of architectural charm.
Net-zero homes produce as much clean energy as they consume annually using on-site renewable energy systems and can be up to 80% more energy efficient than typical new homes.
Here’s a simple guide to achieve net-zero goals with your home:
Going net zero with smart upgrades
Make your home energy-efficient by using modern technologies like advanced insulation, energy-efficient windows, and updated heating, ventilation, and air conditioning systems. Integration of renewable energy sources, like solar photovoltaic (PV) systems, further reduces reliance on conventional energy, aligning the home with net-zero objectives. Considerations include building orientation, roof size and structure capacity, and site impediments. Conducting a site assessment can help determine the viability of PV for your home.
Keeping moisture in check
Older homes can be prone to moisture issues, so it’s essential to manage them carefully. Addressing external water management, foundation drainage, and repairing water damage within the home are crucial before pursuing any upgrades to the building envelope. This helps prevent issues like mold and structural damage.
Tackling insulation challenges
Balancing insulation and maintaining your home’s aesthetic can be tricky, especially in those homes made from moisture-absorbing materials like brick and stone. Understanding the placement of the insulation layer within the wall assembly is crucial for addressing energy efficiency and potential moisture-related concerns. Use breathable insulation materials like mineral wool or cellulose, especially for homes made of materials that absorb moisture. This will help mitigate risks to structural integrity and long-term durability, ensuring energy efficiency and preventing potential moisture-related problems.
Upgrade windows and doors
Swap out windows and doors for better energy efficiency with sensitivity to the historical context. Consider custom solutions that replicate the original design with improved insulation. For those aiming for net zero, opt for advanced thermal windows. Make sure to comply with historic preservation rules before making exterior changes. For more information visit City of Ottawa resources.
Efficient heating, cooling, and hot water
Consider upgrading your HVAC (heating, ventilating and air conditioning) and hot water systems for enhanced energy efficiency. Options such as the ductless mini-split air-source heat pump (ASHP) systems and combination ASHP hot water systems offer discreet and highly efficient solutions. These solutions reduce carbon emissions and can achieve up to 300% efficiency, drastically reducing energy consumption.
Get financial assistance
Take advantage of financial support programs like the Better Homes Ottawa Loan Program, which offers low-interest loans for energy-efficient upgrades, including insulation improvements, window replacements, and HVAC enhancements. Initiatives such as the Canada Greener Homes Loan also provides interest-free funding up to $40,000, incentivizing investments in energy-efficient retrofits like enhanced insulation, window replacements, and high-efficiency heating systems. These programs make sustainable retrofits attainable while contributing to the preservation of the historic charm of Lowertown.
The retrofitting of older homes for net-zero energy efficiency goals requires a thoughtful blend of preservation and modernization. From managing moisture to incorporating renewable energy solutions, the process encompasses a range of considerations. Experts in the field and financial assistance programs can make sustainable retrofits a reality for homeowners and landlords alike. For more information visit Better Homes Ottawa today!