FD90 Intumescent Seal Specification

Selecting the correct intumescent seal specification is essential for achieving your required fire resistance rating. For FD90 rated doors (providing 90 minutes of fire resistance), the specification varies depending on your door configuration and frame type.

Published 03 September 2023

Our comprehensive specifications ensure that every fire door installation meets the highest safety standards while providing the protection you need. Whether you're working with single doors, double doors, or configurations with overpanels, we'll help you select the right intumescent seal solution.

Intumescent Seal Specification for FCW90 Door Leaves Installed in Timber Frames

Location	Size and Position
Stiles/Frames	Forza PVC-seals 1no 20 x 4 mm seal fitted in a groove 7 mm from the pull face in the frame reveal 1no 25 x 4 mm seal fitted in a groove 33 mm from the pull face in the frame reveal
Head/Frame	Forza PVC-seals 1no 20 x 4 mm seal fitted in a groove 7 mm from the pull face in the frame reveal 1no 25 x 4 mm seal fitted in a groove 33 mm from the pull face in the frame reveal
Base/Door	Forza Palusol 1no 50 x 2 mm seal fitted centrally in the leaf edge.
Square meeting stiles	Forza PVC-seals 2no 20 x 4 mm seals; 1no fitted in each leaf edge, with one set 5 mm from the pull face and the other set 5 mm from the push face
Transom/Frame	Forza PVC-seals 1no 20 x 4 mm seal fitted in a groove 7 mm from the pull face in each side transom reveal 1no 25 x 4 mm seal fitted in a groove 33 mm from the pull face in each side transom reveal

Intumescent Seal Specification for FCW90 Door Leaves Installed in Composite Frames

Location	Size and Position
Stiles/Frame	Forza PVC-seals 1no 20 x 4 mm seal fitted in a groove 7 mm from the pull face in the frame reveal 1no 25 x 4 mm seal fitted in a groove 33 mm from the pull face in the frame reveal
Head/Frame	Forza PVC-seals 1no 20 x 4 mm seal fitted in a groove 7 mm from the pull face in the frame reveal 1no 25 x 4 mm seal fitted in a groove 33 mm from the pull face in the frame reveal
Base/Door	Forza Palusol 1no 50 x 2 mm seal fitted centrally in the leaf edge.
Square meeting stiles	Forza PVC-seals 2no 20 x 4 mm seals; 1no fitted in each leaf edge, with one set 5mm from the pull face and the other set 5 mm from the push face
Transom/Frame	Forza PVC-seals 1no 20 x 4 mm seal fitted in a groove 7 mm from the pull face in each side transom reveal 1no 25 x 4 mm seal fitted in a groove 33 mm from the pull face in each side transom reveal

Intumescent Seal Specification for FCH90 Door Leaves Installed in Steel Frames

Location	Size and Position
Stile/Frame	1no 60 x 1 mm surface fitted centrally in the frame reveal
Head/Frame	1no 60 x 1 mm surface fitted centrally in the frame reveal
Base/Door	1no 50 x 1 mm intumescent seal fitted centrally in the bottom edge of the leaf

Intumescent Seal Specification for FCH90 Door Leaves Installed in Timber Frames

Location	Size and Position
Head/Frame	1no 25 x 6 mm intumescent seal fitted 8 mm in from the opening face of the frame
Stiles/Frame	1no 25 x 6 mm intumescent seal fitted 8 mm in from the opening face of the frame
Head/Door	1no 15 x 6 mm intumescent seal fitted 40 mm in from the opening face of the leaf
Stiles/Door	1no 15 x 6 mm intumescent seal fitted 40 mm in from the opening face of the leaf
Bottom edge of leaf	1no 50 x 2 mm intumescent seal fitted centrally in the bottom edge of the leaf
Square meeting stiles	1no 15 x 6 mm intumescent seal fitted 40 mm in from the opening face of the closing edge of the active leaf, and; 1no 25 x 6 mm intumescent seal fitted 8 mm in from the opening face of the closing edge of the inactive leaf
Transom/Frame	1no 15 x 6 mm intumescent seal fitted 40 mm in from the opening face of all four sides of the overpanel edge, and; 1no 25 x 6 mm intumescent seal fitted 8 mm in from the opening face of the surrounding frame/transom

Downloads

FD90 Intumescent Seal Specifications

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