Respond to these showcases www. ajplus. co. uk/ajdirect Readers may obtain information about these products by filling in the enquiry numbers on an AJ enquiry card. Advertisers wishing to promote their products on these pages should contact Chris Bond on Permanite Asphalt is helping to refurbish the Old Palace at Canterbury Cathedral. To give the palace's roof a new lease of life, contractor Barwick's and Knight Asphalte is using Permaphalt, a polymer modified mastic asphalt developed by Permanite to provide a higher performance than conventional grades.