Door Frame Kits

Door frame kits are essential components of any door installation, providing structural support and enhancing both aesthetics and functionality. Whether for internal or external use, the right door frame kit ensures a secure fit and long-lasting durability. In this guide, we explore internal and external door frame kits, different styles, and which types of doors they are best suited for.

1. What is a Door Frame Kit?

A door frame kit is a pre-packaged set of components designed to simplify the installation of a door frame. These kits typically include:

  1. Head and jambs (the horizontal and vertical sections of the frame)
  2. Architrave (optional decorative trim)
  3. Hinges and fixings (in some cases)
  4. Seals and weatherproofing elements (for external doors)

Door frame kits are available in a variety of materials, including timber, MDF, metal, and uPVC, ensuring suitability for different types of doors and settings.

2. Internal Door Frame Kits

What Are Internal Door Frame Kits?

Internal door frame kits are designed for use within a home or commercial building. They provide a clean, structured frame for doors, ensuring smooth operation and enhancing interior aesthetics.

Styles of Internal Door Frames

  1. Standard Timber Frames: Ideal for most internal doors, available in various wood types such as oak, pine, or walnut.
  2. Softwood Frames: Affordable and easy to paint or stain.
  3. MDF Frames: Cost-effective and commonly used with pre-hung doors.
  4. Fire-Rated Frames: Essential for compliance with fire safety regulations.
  5. Glazed Frames: Designed for doors with glass panels to allow light to pass through.

Which Doors Work Best with Internal Frames?

  1. Panel Doors: Traditional and modern panel doors fit well with most frame types.
  2. Flush Doors: Best paired with MDF or softwood frames for a sleek finish.
  3. Glazed Internal Doors: Require specially designed frames to accommodate glass panels.
  4. Pocket Doors: Need specific recessed frame kits for smooth sliding operation.
  5. Bi-fold Doors: Require reinforced frames to support folding mechanisms.

External Door Frame Kits

What Are External Door Frame Kits?

External door frame kits are designed to withstand weather exposure while providing security and insulation. These frames are often reinforced and include weather seals to prevent drafts and water ingress.

Styles of External Door Frames

  1. Hardwood Frames: Durable and resistant to weather conditions, often used with solid wood doors.
  2. Metal Frames: Common in commercial settings or modern residential designs.
  3. uPVC Frames: Low-maintenance and energy-efficient, commonly used with composite or uPVC doors.
  4. Composite Frames: Blend of materials for strength and thermal efficiency.

Which Doors Work Best with External Frames?

  1. Solid Timber Doors: Require strong hardwood frames for durability.
  2. Composite Doors: Pair well with uPVC or composite frames.
  3. Glazed External Doors: Need sturdy frames to support glass panels.
  4. French Doors: Often require a reinforced frame to support double-door installations.
  5. Stable Doors: Work best with weather-sealed hardwood or composite frames.

4. How to Choose the Right Door Frame Kit

When selecting a door frame kit, consider the following:

  1. Material: Match the frame to the door’s material and intended use.

  2. Size: Ensure compatibility with standard or custom door sizes.

  3. Finish: Choose a pre-finished or primed option based on preference.

  4. Insulation & Security: External doors need weatherproofing and reinforced frames.

Door Frame Kits FAQs

A standard door frame kit typically includes the door jambs (vertical sides), the head (top section), and sometimes the door stop. Some kits also come with fixings, architraves, and pre-cut hinges or pre-drilled latch plates for easier installation.

Most door frame kits are designed to fit standard UK door sizes, but they can also be cut to suit bespoke doors. There are different kits for internal and external doors, as well as options for fire-rated doors, glazed doors, and bi-fold doors.

Yes, door frame kits are designed for easy installation, making them a great choice for DIY projects. However, for a professional finish and proper alignment, it’s recommended to use a spirit level and ensure the frame is securely fixed to the wall.

Door frame kits are commonly made from solid wood, MDF, or engineered timber. Hardwood options like oak and walnut offer durability and a premium finish, while MDF is a cost-effective choice that can be painted for a sleek look.

If the existing frame is in good condition, you may not need a full kit—just a new door slab. However, if the frame is damaged, warped, or incompatible with the new door, replacing it with a door frame kit ensures a secure and professional fit.