Karl Harrison
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| Name | Karl Harrison |
| Company Name | Karl Harrison Landscapes Ltd |
| Professions | |
| City | Amersham |
| State/Region | Buckinghamshire |
| Website | |
| Bio | The UK’s Leading Decking and Design Consultant | Founder of The Decking Network | Industry Ambassador Karl Harrison stands as a respected and influential figures in the global decking and landscaping industry. For more than two decades, he has been at the forefront of exterior design, timber engineering, and the evolution of decking standards across the UK. As the creator of The Decking Network (founded 2012), Karl built the UK’s most recognised professional platform for decking design, construction standards, and industry collaboration. His technical leadership and outspoken advocacy for professional practice have shaped the way decking is specified, built, and maintained across both domestic and commercial markets. Karl has worked with the world’s leading decking brands, having been retained as a brand ambassador, technical consultant, and industry influencer for international manufacturers including Owatrol, GRAD Concept, FH Brundle, Country Supplies, Millboard and Trex, and is currently collaborating with Deckorators on UK and European market development. His role bridges technical expertise, design innovation, and public communication — helping global brands connect authentically with professional audiences. Recognised as the UK’s go-to expert for all things decking, Karl has authored the Industry Code of Practice for Timber and Composite Decking for the Association of Professional Landscapers (APL), where he also serves on the Committee. His standards-based approach underpins countless decking installations, ensuring durability, safety, and excellence in design and construction. A natural communicator and educator, Karl regularly presents at FutureScape — the UK’s largest landscaping event — where he leads the Decking Hub, a live platform dedicated to industry innovation, technical education, and product advancement. He lectures for design colleges, Associations, Societies and serves as an instructor at TASK Training Academy, delivering LANTRA-accredited training for professional landscapers and contractors. Karl’s expertise extends beyond the trade — he has featured across mainstream media, including The Telegraph, Daily Express, Homes & Gardens, Grand Designs, Love Your Garden, and Garden ER, and has appeared on George Clarke’s Ugly House to Lovely House and The Tonight Show. His contributions to the Spons External Works and Landscape Price Book further demonstrate his role as a trusted technical authority.
RICS Certificate Holder for Independent Expert Witness Fellow of the Professional Garden Consultants Association Member of the Association of Professional Landscapers Member of the Horticultural Trades Association Member of the Institute of Engineering and Technology Graduateship of the City & Guilds Institute Member of Trustmark |
Recent Posts
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What should a professional decking quotation include? A Homeowner’s Guide
September 21, 2026A professional decking quotation should give you far more than a total price and the name of the board you have chosen. It should explain what will be built, how it will be supported, which materials and fixings will be used, what work is included and what may result in an additional charge. This matters ... Read more
When decking solves a garden level problem better than paving
September 17, 2026There is a tendency in garden construction to treat every slope as a problem that needs to be removed, yet decking for a sloping garden can often offer a more practical solution. The ground falls away, the doors sit too high or one side of the garden sits lower than the other, so the immediate ... Read more
Why does decking get Hot? Composite and timber temperatures explained
September 9, 2026Your decking can become much hotter than the air around it A garden deck can feel pleasantly warm in spring and uncomfortably hot during a summer afternoon. This often surprises homeowners because the weather forecast may say 28°C while the surface beneath their feet feels considerably hotter. So ask yourself ” why does decking get ... Read more
Farmhouse on Ilkley Moor: Thoughtful Garden Design, Beautifully Built
August 22, 2026A beautiful garden designed and professionally landscaped in Yorkshire The best landscape projects often have one thing in common. Despite the thought, work and investment behind them, the finished garden feels as though it has always belonged there. This garden on Ilkley Moor, West Yorkshire, does exactly that. Melissa Morton Garden & Landscape Design created ... Read more
Kebony vs Thermally Modified Timber for Decking: Are They Really the Same?
August 13, 2026Kebony and thermally modified timber are often grouped together as modified woods, although the similarity can be misleading. Both can produce attractive and durable decking, but the processes change timber in very different ways. More importantly, they do not necessarily produce the same mechanical properties afterwards. In brief: Kebony and thermally modified timber can both ... Read more