Preparing a solid level Cedar-Built Foundation
Foundation Options-

TIMBER FOUNDATION: (most common)

To start you will need:  3/4" drain rock or crush gravel, 4x6 pressure treated  timbers, dimensions as per your Cedar-Built Foundation Plans. 

- Place foundation timbers in trenches on a bed of gravel so that the top of the timbers will be flush height (or slightly higher) with the surrounding ground in your yard.
- After foundation timbers are securely fastened together, backfill around the timbers with gravel and fill the remaining floor area with gravel also.  See pictures below for great ideas clients have for finishing walkways.
- You may lay down landscape cloth in the floor area prior to placing gravel, to impede any weed growth.
- Tamp down all gravel until compact.

Many clients place their greenhouses on existing decks.

Drill holes in concrete & place expansion bolts in holes or, drill holes in
concrete & set bolts in place using epoxy grout.
Place bolts in locations shown on Cedar-Built foundation plans.

Pour concrete foundation footings or slab as per your Cedar-Built foundation specs. 

Occasionally clients want to use masonry or stone  rather than our t/g basewalls.   We will provide you with the drawings for building your own  30" or 18" basewalls with foundation, or we can provide the 2x4 framing for your veneer.  Our sloped window sill will anchor on to this. 
Preparing your foundation is an easy process with all materials available locally.   
Upon order you will be provided with your foundation specs and details.
Many options are noted below to assist you in finding one to best suite your needs. 
Gravel/timber foundation- slate walkway
Gravel/timber foundation- brick walkway
Gravel/timber foundation-wooden walkway
Timber & gravel with stone walkway.
Gravel/timber foundation-slate walkway
Concrete slab
*Upon order of your Cedar-Built Kit we will provide you with all measurements and plans for the foundation. 
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Gravel/timber foundation-rubber mat walkway
 Wood deck awaiting greenhouse arrival.
Concrete curbing with heated concrete for Lean-To kit.  
Click on photo to see finished foundation.
Timber with gravel & red brick.  
Deck on sloped site foundation
Cinderblock Walls & Styrofoam Insulation
The foundation is cinder block walls which go down four feet to get below the frost line.  There is styrofoam insulation on the inside of the upper tier of block and pea gravel in the floor right now.  The floor will be brought up to proper level with pea gravel and a brick walk down the middle.
Greenhouse built on pre-existing
concrete slab.
Center aisle finished with paving stones
Click here to add text.
10'x12 FreeStanding kit constructed on client provided concrete foundation built into bank.
We will provide you with concrete wall drawings.
Sloped Sites
Cinder block foundation on sloped site 
8x14 Lean to on wood deck.
Wooden deck foundation
Timber foundation with gravel floor on sloped yard.
Sloped site with pressure treated timbers- gravel beneath benches and interlocking brick walkway.
Shimmed on one side to allow for slope in existing concrete slab.
12' x 22' timber/gravel foundation with stone retaining wall in Anchorage Alaska
Timber and Gravel
Combination deck flooring for hot tub & concrete for sitting area.  Click on photo for additional images
Lean-To structure on cedar deck