Stain Underside Of Shed Floor

However depending on your situation you may choose to stain the underside of your deck for reassurance that your wood will be protected or for aesthetic reasons.
Stain underside of shed floor. Work quickly over one entire wall of the shed covering it evenly. Be sure to finish one entire wall of the shed before taking a break to ensure flawless coverage and no over lapping lines. Apply the stain going with the grain. It is not necessary to stain the underside of your deck for protection from the elements especially if you use pressure treated wood which helps keep wood boring insects out.
Semi transparent stains penetrate the wood s pores to varying degrees based on product. Paint can even hide water stains after repairs allowing you to know if leaks reoccur. Three common choices are solid colour stains semi transparent stains and transparent stains. Something oil based would be preferred like oil based polyurethane or an oil based primer.
Semi transparent stains are ideal when you want to maintain western red cedar s natural finish without weathering. Use a foam brush staining pad or nylon paint brush. I think best would be to elevate the shed somewhat to have good airflow underneath. If the shed will be a man cave she shed kids play area studio or backyard home office it should be painted.
Even with plastic on the ground i can t imagine you ll keep water and condensation out of the joist bays if the shed is sitting on the ground. This can cause condensation to build up on the underside of the floor plywood and eventually rot the floor from the bottom. The paint will seal the wood and make it easier to clean find things and reduce the number of slivers.