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Before adding decorative finishes or laying resin-bound flooring, it’s essential to properly assess your sub-base. A secure, suitable foundation forms the basis of a durable and successful resin floor, whether outdoors or indoors.
What to Check in a Sub-Base
Begin by determining the type of sub-base you have. Popular options for resin floors include concrete, compacted earth, and cement-based screeds for both permeable and self-levelling systems. Check for structural cracks, moisture problems, loose debris, and levelness. Remove any oil stains or old adhesive residues, as these can prevent proper resin adhesion. The condition and quality of the sub-base will influence your choice of resin and method of installation.
Preparing the Sub-Base
Once inspected, thoroughly clean the surface and address any minor defects or uneven spots. For high-traffic or heavy-use areas such as driveways, ensure the sub-base is solid—concrete bases or reinforced grids are recommended for durability. For lighter footpaths or garden spaces, compacted earth may suffice, provided it is stable and free of excessive moisture.
If using a permeable kit like Flowstone, make sure the sub-base itself is not fully sealed, allowing water to drain through. A slight slope assists drainage and helps prevent pooling on the finished floor.
When This Matters
- Outdoor installations: Sub-base preparation affects drainage and weather resistance.
- Driveways or paths supporting vehicles: A poorly assessed base may lead to subsidence or cracking over time.
- Decorative finishes: Surface flaws will telegraph through transparent or decorative resin layers.
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Taking time to evaluate and prepare your sub-base sets your resin floor project up for long-lasting performance and visual appeal. For further guidance on finishing options, see our main guide on how to decorate a resin floor.