The best approach to insulating an outdoor shed is nearly identical to insulating exterior walls in your home.
Best insulation for shed walls.
Foil backed compressed insulation is the best and easiest to work with and we highly recommend this option for your shed.
Ecotherm foil backed compressed insulation has the best u value for efficiency and is completely safe with electrics.
Let s start by looking at the wall insulation.
Things you ll need measuring tape caulk expandable spray foam double glazed windows optional weatherproof door siding optional scissors foam spray insulation polystyrene sheets blanket batt insulation foil bubble wrap insulation wool insulation staple gun staples glue drywall sheets optional.
No other insulator can match that r value as mineral fiber rigid foam and fiberglass are all around r 13 for 4 walls.
The spray foam insulation is great for concrete and frame walls and for hard to reach or odd shaped areas too.
3 4 inch plywood sheathing optional insulate an outdoor shed as you would your home.
The best option for insulating metal shed closed cell spray foam is the best option for insulating your metal shed.
It is also available in a board format as a pu rigid foam polyisocyanurate board or iso board which can be used as an exterior or interior insulation.
Foil backed insulation for insulating your shed realistically this leaves you with one good option.
You wrap the shed in the air barrier and then put siding of your choice over it.
Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.
If you re going to be adding electrical or plumbing to the shed plan and do that before you insulate.
It offers excellent r value per inch as it can achieve r 18 with little more than 3 inches of thickness.
Cut batt or blanket insulation that has an attached vapor barrier an r 20 or greater value and a thickness of about 6 inches to fit the spaces between roof trusses inside the shed.
A common type of wall insulation for insulating sheds is an air barrier.
Advantages to insulating an out building like a shed include better wintering conditions for plant materials and outdoor equipment prone to damage from freezing and thawing.
Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.