Common Air Tightness Issues in Buildings and How to Address Them

1. Phone No: 0800 6123801 Mail Us:email-info@southern-assessors.co.uk Website: www.southern-assessors.co.uk

2. Achieving optimal air tightness in buildings is crucial for energy efficiency, indoor air quality, and overall comfort. However, many buildings, both old and new, often suffer from common air tightness issues that can undermine these goals. Let us explore some of the most common air tightness issues in buildings and the practical solutions to address them. 1. Gaps Around Windows and DoorsGaps and cracks around windows and doors are common sources of air leaks in buildings, compromising energy efficiency by allowing conditioned air to escape and unconditioned air to enter, leading to higher energy bills and discomfort. To address these issues, apply weatherstripping around doors and windows to seal gaps and prevent air infiltration. Use caulk to fill cracks around window frames and door casings to block unwanted air exchange. Install door sweeps at the bottom of exterior doors to seal the gap between the door and the threshold. Phone No: 0800 6123801 Mail Us:email-info@southern-assessors.co.uk Website: www.southern-assessors.co.uk

3. 2. Poorly Sealed Attics and RoofsAttics and roofs are common areas where air leaks occur due to gaps around vents, chimneys, and other penetrations. These leaks can lead to significant energy losses and potential moisture problems, compromising the efficiency and durability of a building. As for its solution, ensure the attic is properly insulated to prevent heat loss. Seal gaps around vents, chimneys, and other penetrations in the attic and roof with expanding foam or caulk. Install weatherstripping around attic hatches and ensure they close tightly to prevent air leaks and enhance overall energy efficiency. 3. Unsealed Electrical Outlets and SwitchesElectrical outlets and switches on exterior walls often contribute to air leaks if not sealed properly, creating inefficiencies in energy use and indoor comfort. To remedy this, installing foam gasket covers behind the outlet and switch plates can effectively reduce air infiltration. Using caulk to seal any gaps around the electrical boxes and the wall helps further mitigate air leaks. Phone No: 0800 6123801 Mail Us:email-info@southern-assessors.co.uk Website: www.southern-assessors.co.uk

4. 4. Cracks in the Building EnvelopeCracks and gaps in the building envelope, like those in the foundation, walls, or roof, contribute to substantial air leakage issues. To tackle this, conduct regular inspections of the building envelope to identify cracks and gaps. Use materials like caulk, foam, or concrete patches to seal these openings effectively. During construction or major renovations, consider installing continuous air barrier systems to create a more airtight building envelope. 5. Unsealed Plumbing and Utility PenetrationsPlumbing and utility penetrations in walls, floors, and ceilings often lead to air leakage problems. To address this issue, use silicone or acrylic latex caulk to seal around plumbing and utility penetrations effectively. For larger gaps, utilize expanding foam insulation to fill the space around these penetrations. Phone No: 0800 6123801 Mail Us:email-info@southern-assessors.co.uk Website: www.southern-assessors.co.uk

5. Final Overview Addressing common air tightness issues in buildings is crucial for enhancing energy efficiency, improving indoor air quality, and ensuring occupant comfort. By identifying and fixing air leaks, building owners reduce energy consumption and create a healthier indoor environment, contributing to sustainability and cost savings in the long term. Explore Southern Assessors’ air tightness testing services in buildings to ensure a healthier, more sustainable future for your spaces. Phone No: 0800 6123801 Mail Us:email-info@southern-assessors.co.uk Website: www.southern-assessors.co.uk

6. Contact Us Phone No: 0800 6123801 Mail Us:email-info@southern-assessors.co.uk Website: www.southern-assessors.co.uk