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Welcome to the Astraframe official guide for installing our premium composite doors. Follow the steps below to ensure a safe, compliant, and professional installation.
Before You Begin
Before removing the existing door:
- Check the door matches your order in size and specification.
- Do not install a damaged product.
- Ensure there is a lintel or suitable load-bearing structure above the opening.
Health & Safety:
- Use PPE and RCD-protected power sources.
- Keep children, pets, and unnecessary personnel away from the area.
- Dispose of packaging and debris responsibly.
Recommended Tools
- Electric drill (hammer action)
- Screwdrivers (flat and Phillips)
- Allen keys (3mm, 4mm)
- T15 Torx bit
- 6mm socket spanner
- Spirit level (1.5m)
- Silicone sealant gun
- Stanley knife, saw, chisel, crowbar, rubber mallet
1. Preparing the Opening
Carefully remove the existing door.
- Score around the frame to minimise plaster damage.
- Clear the opening of nails, screws, mastic, and debris.
- Check the opening is clean, square, and plumb.
2. Installing the Door
- Position the door using packers at all fixing points.
- Use a spirit level to ensure it is plumb and square.
- Fix the frame using plastic-sheathed frame fixings (min 100mm long).
Fixing guidelines:
- 150–250mm from corners
- Max 600mm between intermediate fixings
- Avoid over-tightening to prevent frame distortion
3. Hardware Installation
Traditional Handles, Numerals, and Chains
- Use pilot holes for all fixings.
- Check lock and handle operation once installed.
Contemporary Pull Handles
- Use threaded rods or bolt-through fixings.
- Always use the supplied clear washers to protect the door surface.
4. Hinge Adjustment
Depending on hinge type:
- Athena 2D: ±4mm height/lateral
- Challenger 3D: ±2mm lateral, +3mm vertical, ±0.5mm compression
- Avocet Affinity 3D: ±4mm lateral, ±0.75mm vertical, ±2mm compression
Adjust gradually and evenly across all hinges.
5. Glazing
Top Light Glazing
- Top lights are supplied semi-glazed.
- Re-glaze only once the frame is installed.
- Use glazing packers and tap in beads using hand pressure or a rubber mallet.
Unglazed Doors
- Clean both door and glazing panel.
- Apply a continuous bead of clear silicone.
- Fit glazing panel and clip in both cassettes using supplied bosses and screws.
- Wipe excess silicone and avoid dust/rain for at least 15 minutes.
6. Fitting Side Panels
- Use the GT Panel Lok system provided.
- Fix panel and frame plates 100mm from the corners.
- Add central fixings if required.
- Pack to maintain brush seal clearance.
7. Sealing and Door Restrictors
- Seal around the frame with exterior-grade silicone.
- Ensure drainage slots remain clear.
- For outward opening doors, fit the restrictor arm 90mm from the hinge side to limit the opening angle.
8. Thermal Movement
- Doors may flex slightly due to heat (up to 5mm vertically, 3mm horizontally).
- Always lift the handle to engage all locking points when closing.
- Adjust keeps if door resists locking or appears bowed.
Need Help?
If you require assistance, contact Astraframe. Keep your door’s serial number (found on the top inside frame) for reference when requesting support.
