Regulation B4 Urea formaldehyde foam
Northern Ireland Not yet in force
(1)
Subject to paragraph (2), in-situ foamed urea formaldehyde shall not be used in the erection, structural alteration or extension of a building.
(2)
In-situ foamed urea formaldehyde may be used for filling the cavity of a cavity wall having an inner leaf constructed of bricks or blocks,provided that it is—
(a)
suitable for such an application; and
(b)
satisfactorily installed.