Historic Door Upgrading

• Card upgrading to one side of the door only (the risk side). The non-risk side and the risk side receive 2 coats of HW01/F intumescent paint.

To achieve a full historic door upgrade the door will be left as follows:

• Panels upgraded with veneer to one side only (room side/risk side).
• To complete door on the risk and non - risk side will receive the intumescent paint system upgrade with an undercoat for final painting by others.
• Add new intumescent fire and smoke seals (30 minute rated). The door has to be routed for strips.
• Hardwood lipping, planing/gluing/screwing to agreed detail to ensure each door fits correctly within the frame. Fixing of new ironmongery (supplied by others) including any additional cutting for additional hinge to door and frame.
• Lock/hinge/closer protection wrapped around the lock and inserted into the door and behind ironmongery.
• Lastly fixing of new/existing ironmongery and rehanging door easing and adjusting.

Materials Specified for Door Card Upgrade (please also refer to Material List for Card upgrade for Test References)

• First apply ES/MP/DK3 - Gaboon ply kit with white finish.
• Apply HW paint system for door on risk and non-risk sides.
• New certified fire-rated hinges provided by others; polished brass finish or other to be specified by the architect. If standard hinges used, then they will be protected by inserting intumescent material behind the blades of both sides of the hinges when fixing in place.
• New locks and furniture (supplied by others) shall be fitted with LPH - Lock protection wrapped around the new lock prior to inserting into the door.
• New overhead door closer (supplied by others and fixed to wall and door with intumescent material backing.
• Fire door signage (supplied by others).
• Envirograf Door stickers.
• Intumescent wood filler.
• IS/14/S white/brown fire and smoke seals (30 minutes).

Door Prep

• Firstly prepare doors for receiving 3nr self-closing hinges i.e. if the door has 3 hinges previously fitted then ensure the ‘cut-out’ is large enough for the new hinges to be fitted. If it’s not large enough then neatly enlarge the ‘cut-out’ to suit. If there were previously 2 hinges on the door, ensure they are large enough to take the new hinges and neatly cut a third ‘cut-out’ for the additional hinge. Then apply Intumescent card system.
• Surface Preparation; Generally: scrape off loose paint and thoroughly clean the panels and stiles of the door. Next use Envirograf degreaser to clean both sides of the door. Panels: as general spec plus rub-down the door panels (including corners and edges) with coarse glass paper, providing a good key for the adhesive.

Intumescent Paint Application

• Then apply intumescent paint to all woodwork (both sides) except the panels being upgraded on the room side. Which will require • 1 coat primer @ 10m2/L • 2 coats intumescent @ 8m2/L.
• This can be done using a roller, sprayer or brush.

Veneer and Fire Seal Application

• 1 thin coat of stabond to panels only.
• Measure the panel size and cut out the veneer card required.
• Apply intumescent adhesive to the panel and the grey side of the veneered card.
• Apply the veneered card to the panel-risk side only.
• Using a flexible spatula firmly press the veneered card to the panel ensuring absolute contact over the whole surface.
• Finally allow to dry - minimum 4 hours at room temperature before applying 2 coats HW01/F at 8m2/L to the new panels and 1 coat HW/UC undercoat until the whole face of the doors is covered.
• Now insert intumescent fire and smoke seal (cut and trim around hinges i.e. fully interrupted around hinges) – Please note this item will be removed after re-hanging and re-installed on a separate visit after the doors have been painted to the desired finish by the main contractor. This will ensure the protection of the delicate brush seals from paint
• Attach new hinges (with intumescent backing if required).
• Wrap new lock with LPH and nsert into door; attach new ironmongery with intumescent material (cut to size) behind it (where required).
• Attach new overhead door closing mechanism (supplied by others) including the application of intumescent material to closer as required. 14. Re-hang door, ease and adjust the self-closing device.
• Rehanging Door on Upgraded frame:
• If the previous door had two hinges, then the frame will be cut to accommodate the 3rd hinge 2. Re-hang door on 3nr hinges (supplied by others) 3. Ease and adjust the door to ensure: a. An even gap as far as possible around the door head and closing stiles – 5mm max along head and stile’s, 8mm along.