Caution when fixing the architraves will ensure the fly screen is not damaged due to nails piecing the mesh. Silicone and small brads are recommended.
Dual fly screens have a stopper located in the middle of the sill, this stops the fly screen from over extending. When operating the fly screen the operator should realise the fly screen stops half way.
Hair fibres and general dust falls in the bottom sill fly screen channel and adheres to the visible wires which then build up in the side rollers, care must be taken to vacuum the bottom sill fly channel to prevent any build up and ensure smooth operation.
Recoating your doors
An easy way to tell if the doors need restaining is to look at the external glass bead located on the bottom door rail – run your finger over the top as a guide to establish how thick the stain covering currently is – if the timber is furry this means the timber is absorbing moisture and needs recoating. This is a good indication as this area receives the most wear and tear. If in direct sunlight your doors need restaining every 18 months.
Remove all surface contaminants by wiping all visible track surfaces with a damp cloth with mild detergent, then wipe clean with a clean cloth.
A light spray application of a corrosion preventative such as WD 40 spray applied to the face of the hardware and rollers followed by a light wipe with a dry cloth to remove excess will ensure smooth operation.
0pening and shutting
Always open and shut bi fold doors standing on the inside – never try to pull them across from the outside.
Copper weep holes are located in the sill to vent water build up in the bottom channel. To ensure the weep holes work properly they may need cleaning with a thin piece of wire to dislodge any build up of foreign matter’.
Hardware adjustment information
All the hardware is adjustable, however, if the house frame structure supporting the bi fold door is secure and the foundations are sound, there should be no need for adjusting the doors after installation is complete.
The following diagrams indicate the location of the adjustment points.
A is a diagram of the top pivot. By inserting a Philips head screw driver into both top and bottom as shown, moving the screw driver clockwise or anti clockwise will move the doors to reduce or increase the closing door gap.
B is a diagram of the adjustment lock, located at the base end carriers, pivots and intermediate carriers. By pulling down on the adjustment lock spring and inserting a screw driver as shown the doors will be raised or lowered. You will find adjusting your doors very easy by placing your foot under the door and slightly lifting while adjusting.
Track and Bearings
- Using a spatula or similar (not your finger), apply a small amount (typically a ¼ teaspoon) of white petroleum jelly (vaseline) or similar lubricant to the inner lip of each side of the track.
- Ensure that the wheels pass through the lubricant and it is distributed evenly along the track.
- Put additional lubricant around the bearings. Lubricant reduces wear, improves smoothness and further protects against corrosion of track and bearings.
- Remove all surface contaminants by wiping all visible track surfaces with a damp soft cloth and mild detergent, then wipe clean with a clean cloth.
- In severe environments, apply a thin film of a corrosive preventative such as CRC Marine 66, Innox or WD40, by wiping with a soft cloth moistened with one of these products.
- Stainless-steel bearings are manufactured from hardened-grade stainless steel and although this material performs considerably better than plated steels, it is still susceptible to corrosion unless maintained as described above.
Hangers, Pivots and Hinges
- Wipe down the visible surfaces with warm soapy water on a soft rag and then rinse off by wiping with a clean damp rag.
- A light spray application of a corrosion preventative such as CRC Marine 66, Innox or WD 40, followed by a light wipe with a dry cloth to remove excess, is recommended to all hangers, pivots and hinges.
- This will help maintain the original lustre of the stainless-steel finish.
- Be careful not to get these products on the timberwork itself as they may cause staining.
- Spray application of a corrosion preventative such as CRC Marine 66, Innox or WD 40 to the sliding pin inside the bolt and to the lock cylinder is recommended. There are access holes or slots on all drop bolt products so this can be done with out removing the locks from the doors.
The procedures mentioned above need to be carried out as often as is necessary to prevent deterioration in the installed environment, however we recommend the following minimum frequency of application:
- General environments every 6 months
- Marine and industrial environments every 3 months
All the hardware is adjustable however if the structure supporting the bi fold door is secure and the foundations are sound, there should be no need for adjusting the doors after installation is complete.
Copper weep holes are positioned in the sill to vent water build up in bottom channel.
- To insure the weep holes work properly they my need cleaning with a thin piece of wire to dislodge any build up of foreign matter.
Staining / Painting
As a general rule bradworthy Bi folds apply 2 coats of either paint or stain prior to glazing the joinery product leaving the last 2 coats for the client after the joinery item has been installed.
This ensures the maximum life expectancy because the joinery item is sealed preventing moisture penetration.
- If painting we advise the client to apply the last two coats within a maximum time period of 2 weeks
- If staining we advise the client to apply the last two coats within a maximum time period of 4 weeks
- We use Sikkens Stains because of our personal experience over the last 24 years.
- Bradworthy Bi folds use Filter 7 externally with TS Interior internally using HLS only on door sills
- Before you apply any paint or stain the client is advised to ensure the timber face is completely free of any dirt or impurity that my effect the new coats adhesion.
Points to be adhered to when staining Bradworthy Bi folds:
- Before staining clean with warm water, do not sand the doors at this point.
- No more than 2 extra coats of Filter 7 externally. (Externally meaning all surfaces visible when viewing the doors in a closed position from outside).
- Do not sand between coats. The stain is very thick so be careful of runs that may not be evident straight away.
- Always apply 2 coats internally, then if needed, a very light sand and 1 or 2 extra coats of TS Interior.
- Never apply Filter 7 to the bi fold sill. Use HLS only on door sills
- When staining, external joinery in direct sunlight should be cleaned, then recoated every 18 months.
- For optimum penetration all Painting/staining is applied by hand.
Sikkens stains can be purchased from Bradworthy Bi Folds
|Paint/stain applied to joinery before delivery to site||Work to be done after installation|
|Internal face of joinery||1 Coat Sikkens HLS||2 Coats of TS Interior|
|1 Coat of Sikkens TS Interior|
|External inc top & bot of door/sash||1 Coat Sikkens HLS||2 Coats of Sikkens Filter 7|
|1 Coat of Sikkens Filter 7|
|Door Sills||3 Coats HLS||None|
|Stain colour used||Optional|
|Paint applied to joinery before delivery to site||Work to be done after installation|
|Internal & external face of joinery inc top & bot of door/sash||1 Coat Oil Based Primer||2 Finishing Coats|
|Internal & external face of joinery inc top & bot of door/sash||1 Coat Oil Based Under Coat|
|Door Sills||3 Coats HLS||None|
|Stain colour used||Optional|