Field Notes

All 6mm polycarbonate aluminium arch spacing assembly base bq British weather buying guide buying-guide calendar cold-frame comparison construction cost decision diagnostic diy engineering foundation FSC pine garden architecture glazing grades greenhouse cost greenhouse engineering greenhouse installation greenhouse-position growing-guide growing-tips heating heavy duty polytunnel informational installation insulation longevity maintenance mini-greenhouse monthly-tasks nordic NORDIC greenhouse permitted-development placement planning polycarbonate polycarbonate greenhouse polytunnel polytunnel alternatives polytunnel buying guide polytunnel UK polytunnel vs greenhouse pricing rhino Scandinavian design shelving staging SteelRoot storm timber tomatoes UK gardening uk-2026 uk-compliance uk-garden uk-gardening uk-weather warranty wind wind load winter winter-greenhouse wooden greenhouse wooden-greenhouse
6mm vs 4mm Polycarbonate Greenhouse UK: When the Extra Thickness Matters

6mm vs 4mm Polycarbonate Greenhouse UK: When the Extra Thickness Matters

— Alex Goldgewicht
Tagged: 6mm polycarbonate engineering glazing polycarbonate greenhouse SteelRoot
4mm or 6mm twin-wall cellular polycarbonate? It depends on the frame, the site, and what you're growing. A practical UK guide to when the extra 2mm earns its keep.
Polytunnel vs Polycarbonate Greenhouse UK: The Honest 10-Year Comparison

Polytunnel vs Polycarbonate Greenhouse UK: The Honest 10-Year Comparison

— Alex Goldgewicht
Tagged: buying guide polycarbonate greenhouse polytunnel vs greenhouse SteelRoot UK gardening
Polytunnel for absolute lowest cost per growing metre. Cellular polycarbonate for permanence and zero film replacement. Where each genuinely wins, by a UK greenhouse maker.