Introduction
Caught up in the whirlwind of fire doors and the flurry of details? We’ve all been there. When designing and specifying jambs or frames for your doors, there is often confusion of jamb types and why you would choose one over another.
In this article, we’ll break down what sets these two frame types apart, and help you decide which is better suited to your project.
At Soteria Doors, our jambs are manufactured from high-quality solid Pine and Hardwood timbers, providing the strength and density fire doors require.
What is a Flat Jamb Frame?
The Flat Jamb is the typical and more commonly used profile is known for its ease of install and lends itself to various finishes. It features a flat surface on all edges, with rounded corners and recessed intumescent seals.
Key Characteristics:
- Clean, modern look
- More architrave finishing options available
- Less cracking and damage risk.
- Maximum holding power for the hinges.
What is a Grooved Jamb?
The Grooved Jamb is more complete with the profile designed to wrap around the wall offering a more uniform and polished look with no requirement for architrave. The installation requires a high degree of precision to achieve a gap-free finish and ensure the wall lining is plumb. This process can be time-consuming, as careful attention to detail is necessary to meet the desired quality standards.
Key Characteristics:
- Requires high precision and time to avoid gaps and ensure plumb wall lining.
- Susceptible to cracking and damage during installation and regular use.
Wrap-up:
Both frame types are suitable for fire-rated openings; however, flat jambs offer greater flexibility and are often the preferred choice for the majority of projects. They are a popular choice for both new construction and renovation projects where adaptability and ease of installation are key considerations. Grooved jambs are only available for 30-minute fire doors, which limits their applicability and options. While they provide a more aspirational solution, their use is less common due their intricacies.
Not sure which option is right for your project? Feel free to reach out—we’re here to help you choose the most practical and versatile solution.