Do the lndependant Agrément Boards (BBA & IAB) support your claim that the system can not cause damp penetration?
A. Yes on their Certificates they state the following: Bonded Beads will not transmit water across the cavity or from below the Damp Proof Course Level. After a period of 20 years no failure of this product has been reported to the Board. Ask to see the Certainfil certificate. In addition the N.H.B.0 (NI) state they have never had a claim involving Bonded Bead.