Building Standards for Passive House
To be certified, a building is required to meet specific criteria. This is a set of guidelines that may vary according to different parts of the world. Some of the major principles to be followed are listed below:
• Solar Power
The house is designed so that it can perform multiple functions at a time. A smooth system maximizes the use of sunlight and prevents overheating. It is achieved by designing certified roofs, windows, and doors that enhance the heat gained from the sun.
The highest quality of insulation is vital to keep the heat inside. A passive house must be wrapped without gaps in insulation so it could eliminate any chances of thermal bridging and allow the house to stay warm for the long term.
• Air Control
The heat recovery ventilation system of the proposed passive house must be able to control the flow of air. It collects outside air and filters it before dispersing it in all rooms. The supply of warm or cold air depends on the temperature inside each room.
• Windows and Doors
Passive house certified windows and doors are required for optimization of the solar energy consumption. People prefer to install fixed windows and tilt and turn windows in passive houses because they have great insulation properties. Companies have started offering quadruple glazed windows made with special glazing glass as well.
All windows and doors companies often tend to upgrade their products and services. Perhaps, this level of competition will cause a decrease in prices. It would be much more affordable to buy, build, or renovate a passive house in the future. Many people have even transformed a regular house into a passive house. However, very keen attention to detail and patience is required to search and select the passive house certified parts.
What Is The U-value?
The U-value is a thermal transmittance (heat transfer rate) measurement of any material. It’s a simple formula that divides the rate of heat transfer by the temperature difference of structures. So, a high U-value means an increase in heat loss. Alternatively, the U-value of a building is the reciprocal of the sum of its respective material.
Factors that affect thermal transmittance are convection currents and ambient temperature. Also, external walls can absorb the heat inside your home if the passive house wall’s U-values are high. Here are some conditions that affect the accurate measurement of U-values.
• Climatic and weather conditions
• Temperature difference
• The adhesive strength of thermopiles to test points
• The number of test points (lacking a wide variety of test points)
What Is the R-value?
It’s important to use and install the right insulation material if one wants to minimize heat loss. R-value is an accurate method of measuring thermal insulation. Normally, it’s calculated as the reciprocal of the U-value. If one knows the thermal conductivity of any material, divide the value by its thickness level. The result is shown in squared meters Kelvin per Watt (m²K/W) is the R-value.
Unlike thermal transmittance, R-values show a material’s strength of resisting heat flow. The material could be a high-quality thermal glass window. While low numbers of U-Values are good, R-Values (thermal resistance) should be high for materials to have great insulating properties.
Glass and Frames
Passive house buildings in many temperate countries use triple glazed windows and frames. Normally, the thermal conductivity of insulating materials depends on their attributes. Homeowners in North America enjoy colder climates, and they prefer to install high-performance triple-glazing windows that provides better insultation and reduce heat loss.
Manufacturers use special technology to build these glass windows. Usually, inert gases like Krypton or Argon fill the sealed spaces between these panes. With this design, they cover these glass surfaces with low emissivity (Low-e) coats.
Airtightness is one of the qualities of passive house buildings. It determines proper ventilation and the entry of fresh air. Also, airtight buildings prevent moisture and molds damage to walls.
What Are the Benefits of Installing Passive House Windows?
- Improves Daylight Visibility and Minimizes Heat Loss
Installers should pay attention to detail to get the passive house certified. Apart from conserving heat, well-installed thermal windows allow residents to feel the warmth of the sun. Natural light is important because it saves your cost of lighting up bulbs to illuminate the interior space.
In a passive house, the internal temperature doesn’t fall below 17 degrees centigrade. Sometimes, the space between windows and walls creates an escape route for heat. Installers should insulate the walls against heat losses. This technique prevents dissipation through frames and windows too.
- It Promotes Airtightness
A group of residents with passive house buildings redesigned their architectural plans to enjoy heat recovery systems. While they were impressed with the quality, the reasonable cost of construction adds value to a house. In passive house Canada, many residents are applying thermal bridge free designs to windows and door. This building technology promotes airtightness during warm and cold and months.
- Healthy Living
It’s important to have fresh air in living spaces. When there’s condensation, regular windows produce molds on the walls. However, passive house windows create eco-friendly environments. Generally, passive house certification standards require airtight tests. The blower door tests help to show the quality of sliding doors.
These tests help doors companies to use materials that boost comfort and hygiene levels. Many people can develop or exasperate asthma from damp walls, but thermal bridge free construction and airtight designs in passive homes ensure proper ventilation of interior spaces.
- Eco-friendly Buildings
Greenhouse gas emission is a threat to our environment, and everyone needs to reduce it. Homeowners can contribute to the major problem solving by switching to renewable sources like solar. The threats of environmental pollution will continue to prevail when home’s primary energy comes from non-renewable sources.
One of the advantages of eco-friendly homes is high energy efficiency and low energy consumption. In Europe, there’s a policy on clean energy. It’s encouraging people to build zero-energy consumption homes.
As world leaders try to coop with climate change effects, with sustainable construction practices, it’s easy to achieve set goal. We hope to see more passive house windows and patio doors with quadruple glazed panes since they increase the energy efficiency of a house and hereby reduce energy consumption of the house. Energy generation is associated with production of carbon dioxide which heavily contributes to the green house effect. Using eco-friendly passive houses is a great way to have a positive effect on the environment.