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07 347 7516
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Our Experts

Meet the team of experts who are responsible for making Holmac Ltd the industry leader in waterproofing and protection systems.

Mobile: 027 495-3418

Ash Gribble – Director/Owner CIBP, NDQS

Ash has over 40 years of experience in the industry with an impressive line up of qualifications and expertise. He relishes a challenge and with the support of his team, usually overcomes them.

  • National Certificate in Painting and Decorating-Specialised Coatings

  • National Certificate in Quantity Surveying

  • Licensed Building Practitioner Number BP116078

  • HERA Certification board for Inspection Personnel Cert. No. CI 050

  • Site Safe NZ Supervisor gold Card No. 130940

  • First Aid Unit Standards 6400,6401,6402



Mobile: 027 450 1058

 Scott Brown - Quantity Estimator


Mobile: 027-472 3892

Dale Ferguson – Contracts Supervisor

With 27 years in the industry - 21 of those with Holmac - Dale has an impressive array of experience which adds dimension to the skills and services provided by Holmac Ltd.

  • Trades Certificate Painting and Decorating – Specialised Coatings

  • Site Safe NZ Supervisor Gold card No. 130488

  • Scaffold Unit Standard 9184

  • Confined Space Unit Standard 17599

  • First Aid Unit Standard 6400,6401,6402

  • Working at Height Unit Standard 17600

  • Elevated Working Platforms certification

  • BCITO – PPCS Approved Assessor

  • Licensed Building Practitioner No. BP122161

  • Falls Arrest Systems 15757



We have a staff of 23, each of whom have excellent training and experience. They all bring individual skills and flare to our company making it the professional environment we enjoy each day.