INSTALLATION INSTRUCTIONS
BEFORE YOU START
RIGHT TIME?
Generally ‘doorsets are late second fix’ items, often fully factory-finished. They should only be installed when wet trades, such as plastering, have been completed and drying out is well advanced. If not, STOP!
RIGHT PLACE?
Each product will be labelled with a unique reference to locate the correct doorway from the project drawings and schedules. If the references do not match, STOP!
OPENING CORRECT?
The structural opening width, height and partition thickness should be as 90° the schedules/drawings, and plumb and level. Wall faces should be plumb and the floor finish level.
If not, STOP!
HEAVY DOORS?
Doorsets can be very heavy therefore the Health and Safety aspects of handling these products on site i.e. off-loading, storage, transporting to the final location and actual installation must be considered.
| Product | Door weight (Kg/m2) | Typical single leaf doorset weight* (Kg) |
|---|---|---|
| Sheraton Sussex – NR/FD30 | 26 | 64 |
| Sheraton Sussex – FD60 | 40 | 90 |
| Chippendale Sussex – NR/FD30 | 32 | 75 |
| Chippendale Sussex – FD60 | 42 | 94 |
*1000mm x 2100mm unglazed doorset with hardwood frame. All weights are approximate and do not include ironmongery.
STEP-BY-STEP
01
Remove packaging, taking care to retain any loose items such as the pellets etc.
02
Carefully remove doors from the frames and stack flat, safely out of the way.
03
Offer frame into the opening and pack between hanging jamb/wall ensuring equal frame/wall tolerance gaps to both jambs.
04
Fix the hanging jamb to the wall with appropriate fixings, ensuring that the frame is plumb to both the structural opening and wall faces.
Note – We recommend a minimum of 4 No. fixings per jamb, staggered in the rebate / stop, positioned a maximum 150mm from top and bottom of the frame, and at maximum 600mm centres. Fixings should be positioned a minimum 35mm from the face of the frame.
05
Check and adjust level of the frame head. Position the second jamb, ensuring it is plumb both ways and parallel to the hanging jamb.
06
Pack and insert two fixings only into the second jamb and, if needed for a pair of doors, the head. This allows for adjustment later.
07
Hang the door(s). Adjust packing to the back of the jambs where needed to achieve the required clearance by increasing/ decreasing the packing thickness. Check alignment for twist. Insert all remaining fixings. Apply pellets over the fixings.
08
Gaps at the back of the frames must be fully sealed as follows, prior to application of architraves in accordance to BS 8214.
09
Apply architraves to door frame by pin fixing.
Recommendations for timber door frame/wall joints (summarised from BS 8214)
| Wall construction | Max frame/wall gap width (mm) | Architrave condition | Additional protection | |
|---|---|---|---|---|
| 30 min | 60 min | |||
| Timber, stud, masonry, etc non-loadbearing (unlikely to distort) |
Up to 10 More than 10 |
A B All |
None Type 1 Type 1 |
Type 1 Type 2 Type 2 |
| Stell, stud, etc., loadbearing(likely to distort) | All | C | Type 1 | Type 2 |
| Fair-faced masonry, loadbearing and non-loadbearing |
Up to 10 All More than 10 |
D All All |
None Type 1 N/A |
N/A N/A Type 2 |
Architrave conditions (Note 1)
- Intimately fitted hardwood (or softwood for 30 minutes only) architraves at least 15mm thick with a 15mm overlap onto wall and frame.
- Imperfectly fitting architraves.
- Architrave fit cannot be guaranteed due to likely wall distortion in fire.
- Intimately fitted 19mm hardwood quadrant bead.
Additional protection (Note 2)
TYPE 1 (one of the following)
- 2mm x 10mm intumescent material as a preformed strip or seal
- Mineral or glass wool packed to a depth of at least 10mm
- A bead of intumescent paste or intumescent mastic
TYPE 2 (one of the following)
- 2mm x 20mm intumescent material as a preformed strip or seal
- Mineral or glass wool packed to a depth of at least 20mm
- A bead of intumescent paste or intumescent mastic
Notes:
- Longden architraves are 14mm thick.
- When requested we fit 2mm x 25mm intumescent strips, grooved into the back of fire resistant frames.
- Smoke control doorsets frame to wall gaps should always be packed with mineral or glass wool or sealed with a bead of intumescent past or mastic.
Further Information
It is essential to read the instillation instructions within the packaging.
For further help and advice please call Longden.