FOUNDATIONS

Preparing your foundation is easier than you think.

Before your greenhouse arrives, you'll need a simple foundation in place — and we make it straightforward. We provide exact dimension plans for your specific size, so there's no guesswork. Most customers tackle this themselves in a weekend.

Over 90% of our customers choose a timber (wood frame) foundation — pressure-treated 4x6 timbers with a gravel floor. It's DIY-friendly, budget-conscious, and works beautifully. If you prefer a permanent concrete footing or slab, we provide full plans and specs for that too.

If your yard is sloped, or you'd like to build on an existing deck or patio, we've got you covered there too.

4×6 Pressure Treated Timber

Mark & Excavate Mark the layout and dig shallow trenches so the timbers sit flush with, or slightly above, ground level.

Prepare the Gravel Base Spread a layer of gravel in the trenches to promote drainage.

Set the Timbers Place the timbers on the gravel bed according to our dimensions and secure the corners with lag screws or brackets.

Backfill & Fill the Interior Backfill around the perimeter with gravel and fill the interior floor. Many clients add walkways at this stage using stone, brick, or wood.

Compact the Gravel Use a tamper or compactor to firmly pack the gravel for a stable, long‑lasting base.