Weather-Sealing Entrance Doors: What Architects need to know
Introduction:
Weather-sealing entrance doors are crucial for architects aiming to achieve optimal energy efficiency in their building designs. Proper weather-sealing not only enhances insulation but also reduces air leaks, contributing to a more sustainable and comfortable environment. In this blog post, we will explore essential design guidance for architects regarding weather-sealing entrance doors. We'll cover different types of weatherstripping, considerations for various climates, and specific installation methods for inswing and outswing doors.
1. Importance of Effective Weather-sealing
To ensure optimal energy efficiency in your building, it's important to focus on sealing any seams or holes in the building envelope and filling any gaps around windows and doors with insulation. Installing weatherstripping is also highly recommended to reduce any air leaks. One of the most critical components of weatherstripping is a well-fitted door threshold and frame.
2. Types of Permanent Weatherstripping:
There are three types of permanent weatherstripping: tubular, metal-leaf, and kerf-in.
Tubular Weatherstripping: It is the cheapest and easiest option for retrofitting. It has a flexible seal that is pressed against the door and a reinforced metal strip that is screwed onto the jamb.
Metal-Leaf Weatherstripping: It is durable and hidden when the door is shut. It is nailed to the door jambs and compresses when the door is shut.
Kerf-in Weatherstripping: It is ideal for prehung exterior doors as it slides into a slot between the jamb and doorstop. It can be easily replaced if compressed over time, and silicone stripping is an excellent retrofit option.
3. Weatherstripping at the bottom of the door: Shoes/Sweeps
When choosing weatherstripping for a door, it's essential to select a durable option that creates a tight seal. The components that fasten to the lower part of doors are known as shoes or sweeps. They attach to the door panel's bottom and form a secure seal with the threshold.
Climate considerations and additional protection: It's also important to consider the climate of your region when selecting weatherstripping. If you live in an area that receives a lot of precipitation, it's a good idea to have a roof or porch overhang to provide an additional layer of protection. The overhang should be sized appropriately and extended out from the building to about half the distance from the doorsill to the underside of the eave.
Attaching sweeps and shoes: Different methods depend on whether it's an inswing or outswing door. For outswing doors, a compressible gasket should be installed to the integral stop in the threshold, and a flap neoprene sweep should be added to the outside of the door. When attaching the sweep, ensure that it's cut to the correct length and touches the threshold when the door is shut. While flap sweeps are less durable than kerf-in sweeps, they are a cost-effective and easy-to-install option that is still reasonably durable.
Conclusion:
Proper weather-sealing of entrance doors is a critical aspect of architectural design that contributes to energy efficiency and occupant comfort. Architects should carefully consider the type of weatherstripping, durability, and sealing capabilities while taking into account the specific climate conditions of the region. By following these essential design guidelines, architects can create buildings that are well-prepared to withstand various weather challenges, contributing to a sustainable and eco-friendly built environment.
Written by D.TO: Design TOgether
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