This Wednesday readers “Ask the Guru” about costs of a metal “welded” sliding barn door frame, insulating a building with double bubble insulation to avoid condensation, and a question about our sealed plans for a new building.
DEAR POLE BARN GURU: Double sliding metal barn doors, 10′ wide by 12′ height. Metal welded frame. Appropriate cost please. TIMOTHY in CAT SPRING

DEAR TIMOTHY: Thank you for your interest. Our sliding metal barn doors are screwed together, rather than welded, as this makes for ease of shipping. We do only provide them with an investment in a complete building package – as shipment of only sliding door components would be cost prohibitive.
DEAR POLE BARN GURU: Recently purchased a property with a 24′ x 32′ pole barn. Has a steel roof and walls. Girts and purlins are covered with double bubble. I plan on using this as a workshop with heat and air conditioning to make it more comfortable. The concrete slab has 6 mil poly under it. The interior is completely unfinished. I plan on installing OSB and painting it. But prior to that I would like to add insulation. My concern is condensation. Do I use a vapor barrier, vapor membrane (like CertainTeed), or no vapor barrier on the walls? What about the ceiling? Building has soffit vent and a ridge vent. MICHAEL in LEWISBERRY
DEAR MICHAEL: Control of condensation should always be taken quite seriously.
Provided your building’s double bubble has been properly installed and all seams are sealed, it is a vapor barrier (and a minute insulation, under R-1). In order for your walls to properly dry to building interior, use an unfaced insulation like Rockwool (as it is unaffected by moisture) with no interior vapor barrier. Painting interior of OSB may create an unintended vapor barrier surface.
For your ceiling, once interior finish has been installed, blow in insulation, taking care to leave no less than an inch of continuous air space above it and below any roof purlins or underside of double bubble.
Keep an eye on interior humidity levels, as you may need to mechanically dehumidify.
DEAR POLE BARN GURU: I am building a 40’W X 60’L pole barn with treated 8″ X 8″ posts. I need a design approved with a Pennsylvania seal on it. Do your plans have seal on them? JAMES in McKEAN
DEAR JAMES: Every building Hansen Pole Buildings provides includes site specific structural plans sealed by a engineer registered in the state building will be constructed in and comes with sealed verifying calculations. Our engineers will only seal plans when we are providing materials, this assures materials as specified are actually being provided.
Here, in my humble opinion, is your best solution. Cancel your steel structure order and get a refund. We can then design, engineer and deliver a post frame home to meet your wants and needs. When all is said and done, you will save yourself tens of thousands of dollars and be living in your new home long before your steel structure provider even begins to figure out a design solution. One of our Building Design team members will be reaching out to you to further assist.
DEAR THOMAS: In this instance, I went direct to the source for your answer – Brett Clary from Dripstop, who writes:
DEAR POLE BARN GURU: Cost to replace 2 sliding doors in pole shed. 16 wide 16 high 20 wide 16 high. DUANE in LESTER
DEAR SONNY: Your radiant barrier acts as a vapor barrier. In order to prevent moisture from being trapped within your wall cavity you will want to use unfaced batts. I would recommend rock wool, rather than fiberglass or cellulose, as it is unaffected by moisture. Do not add an internal vapor barrier or retarder (such as clear poly).
DEAR STEPHEN: I would have absolutely no qualms about using properly pressure preservative treated (UC-4B rated) columns in ground. Personally, my lovely bride and I live in an 8000 square foot finished, million dollar post frame shouse (shop/house) with embedded columns. I have also built (yes, me) two post frame buildings in Eastern Tennessee – one for my eldest son in Maryville (read about it here:
DEAR POLE BARN GURU: I have a pole barn and need the outside sliding doors replaced. There are two doors and they’re each 10′ high, 8′ wide, and 1-2/3″ thick. Do you do this kind of work? ANDY in MIAMISBURG