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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Timber or Composite Decking: Which Is Better for Your UK Garden?
August 2, 2026Choosing between timber or composite decking is one of the first major decisions homeowners face when planning a garden deck. This is an independent comparison of smooth pine, Kebony, hardwood and premium composite decking for UK homeowners. However, advertising often makes that decision appear much simpler than it is. Some suppliers describe timber as outdated, ... Read more
White Blotches on Ipe Decking: Causes, Treatment and Prevention
July 30, 2026Ipe is one of the densest and most durable hardwoods used for exterior decking. When it has been correctly specified, installed and maintained, it can provide a particularly attractive and long-lasting deck surface. White blotches on Ipe decking can be particularly alarming, especially where the deck is new, recently restored or has only just been ... Read more
What Type of Decking Is Right for My Garden? 12 Questions to Ask First
July 21, 2026Decking can work in almost any garden, but the same decking design will not work everywhere. A level garden beside a modern extension requires a different response from a steep site, a shaded courtyard or a garden surrounded by mature trees. Each may suit decking exceptionally well, provided the design responds to the conditions. Choosing ... Read more
Before You Buy Composite Decking | Claims and Warranties
July 19, 2026Before you buy composite decking, it is worth looking beyond the colour, price and headline warranty. Manufacturers and suppliers often make strong claims about British production, low maintenance, fading, durability and long-term protection. These claims may be accurate; they may not be! Homeowners should still ask what published information supports them. Where is the decking ... Read more
Where should decking be positioned in a garden?
July 17, 2026Placing the deck in the right place is key Most homeowners begin by looking at the area immediately outside the rear doors. That may sit beyond the kitchen, dining room, family room or a set of bi-folds. In many average-sized UK gardens, it remains the most sensible place to start. Where should decking be positioned ... Read more