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Router grooves on door leaf allowed?

Guest Calire
Guest Calire
in Fire Doors and Accessories

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Good afternoon, I am interested in purchasing ply flush fire doors but was wondering if shallow router groves can be added as a decorative feature. Is they a maximum depth ?

I would appreciate any help on this matter

Kind regards
Claire

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    If you carry out any modifications to a certificate fire door you stand a chance of invalidating the certificate and there is no way of knowing if the fire resistance has been compromised.

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