Published 2026-10-02 · Sapulpa Spray Foam Insulation Kings

Stopping Condensation in Creek County Metal Shops and Buildings

Metal shops, pole barns and steel buildings across Creek County drip for a simple reason: warm, humid air inside the building touches steel that has cooled overnight, and the moisture condenses. Closed-cell spray foam bonded directly to the metal stops it, because moist air can no longer reach the cold surface. In many unheated buildings, about 1 to 1.5 inches is enough.

Why Oklahoma Weather Makes It Worse

Our humid summers and quick temperature swings in spring and fall are ideal for condensation. A clear night cools the roof panels below the dew point of the air inside, and by morning water is dripping onto trucks, tools, hay and equipment. Over time that moisture rusts fasteners and panels and ruins stored goods.

Why Old Blanket Insulation Fails

Many metal buildings came with vinyl-faced blanket insulation. Once the facing tears or the seams open, humid air gets behind it, condenses on the steel and soaks the blanket. Wet blankets sag, hold moisture against the metal and stop insulating. In most cases they need to come out so new foam can bond directly to the steel.

How Much Foam You Need

• Unheated barns and storage buildings: about 1 to 1.5 inches of closed-cell for condensation control
• Heated or cooled shops: about 2 to 3 inches
• Barndominium living areas: often 3 inches or more in the roof, matched to comfort and code needs

Closed-cell foam runs about $1.00 to $2.00 per board foot. A 30x40 shop with about 2 inches on the walls and roof commonly costs about $5,500 to $11,000.

Other Benefits

Foam seals seams and fastener holes, keeps out wasps and birds at the eaves, stiffens the panels and makes the building usable in July and January. If the building will be occupied, code may require a thermal barrier or approved coating over the foam.

Next Steps

A free estimate measures the building and gives you a written price. See metal building insulation and spray foam roofing for leaking metal roofs.