Cost, Design, and Energy Performance
- Cost: Windows and doors are significant expenses, so explore options within your budget. uPVC is generally the most affordable, while solid aluminium and hardwood are at the higher end. Consider the cost of glass types (single, double, or triple glazing) and any additional technology.
- Design: The style and material of windows and doors should complement your home’s design. Traditional solid timber has become less common due to maintenance needs, with uPVC and aluminium gaining popularity. Aluclad options offer a blend of aesthetics and durability.
- Energy Performance: Windows and doors play a crucial role in your home’s thermal performance. They impact energy loss, so consider their insulation properties and the potential for solar gain, which can affect internal temperatures.
Material Choices and Longevity
- Materials: uPVC, aluminium, and wood are common choices. Aluclad windows (uPVC or wood clad in aluminium) are popular for their durability and maintenance benefits. Ensure the materials chosen will stand up to local weather conditions.
- Longevity: Examine samples or visit showrooms to assess quality. Look for robust seals, locks, and mechanisms. Check warranties for assurances on durability and performance.
Performance Metrics and Certification
- Energy Efficiency: Look for windows with soft low-E coatings, Class 4 air leakage or better, and insulated spacer bars. Aim for windows with an ‘A’ energy rating.
- Security: Consider security features such as windows certified to BS PAS 24. For added protection, existing glazing can be enhanced with accredited adhesive window film.
- PassivHaus Certification: Some high-performance windows and doors are certified to PassivHaus standards. Be cautious of products claiming high performance at low prices.
Integration and Ventilation
- Roof Lights: Determine the size, location, and whether roof lights should open. This impacts roof structure design and building regulations.
- Ventilation: Ensure windows contribute to effective cross-ventilation and accommodate potential emergencies, like burst pipes. UV exposure through windows can fade soft furnishings, so consider protective measures.
Building Regulations and Standards
- Regulations: Ensure windows and doors meet building regulations for height, fire escapes, and locking mechanisms. Check certification systems for added security.
- Thermal Performance: For high thermal performance builds, ensure manufacturers can supply frame extension pieces to overlap insulation and address thermal bridging.
Maintenance and Practicality
- Maintenance: Assess the ease of maintenance for different materials. uPVC requires less upkeep compared to timber.
- Practical Use: Consider how windows and doors will fit into your daily living. Ensure they are sturdy and will remain stable over time. Check for guarantees against defects and wear.
By carefully considering these factors, you can select windows and doors that enhance your home’s functionality, aesthetic appeal, and energy efficiency.