Tag Archives: condensation barrier

Seal Walls, Fill for Compaction, and Condensation Control

Let’s close out the week with another installment of Ask the Pole Barn Guru! First up is a resolution to seal up a building, followed by assistance with compacted fill, and finally an alternative to spray foam to control condensation.

DEAR POLE BARN GURU: I purchased a pole building from you last year and there was an error that I wanted an insulated building. So I will be insulating this myself. What keeps all the drafts and bugs out at the roof eve and lower edge of side panels? I am doing house wrap on the exterior walls. MARK in MOUNT VERNON

DEAR MARK: Communication – we as humans do so much of it and all too often do not fully convey our intentions. I am just as guilty as any other person, so do not feel like you are alone in this. This is one reason we strive to do everything in writing, so both parties are clear on each other’s expectations.


Also, successful construction is not measured by how perfect things went initially, but rather by how challenges are solved to arrive at a great end result.

Your roof eaves should be sealed with inside closures, provided with your building package, to install between fascia board and roof steel, so should not be an issue there. If you have not yet installed siding, same inside closures can be placed at bottom of walls, on top of your Weather Resistant Barrier to keep any little critters from entering steel high ribs in your 1/4 inch space between base trim flat and bottom edge of wall panels.


DEAR POLE BARN GURU: I’ve worked with a Hansen Building Designer, ordered my building, and materials will start arriving in two weeks. Looking forward to it, but also a little bit ‘trepidated,’ as it’s my first post-frame build (I completely remuddled a 100 year old farm house at our last place, so that’s what I have for previous experience).

My question has to do with the compacted fill that goes onto my cleared site after the poles are concreted in. Is crusher run gravel appropriate, or is a different type of gravel recommended for better drainage (I’m not familiar with the options, so please be specific if so)?

Also, please see the attached photo of the cleared site along with a drawing I created based on what I *think* are the correct dimensions based on reading the Construction Manual and a number of your blog posts. Note that I’m planning on a 5″ thick concrete floor, and have indicated same in the drawing at exactly 5″. ED in SUMMERTOWN

DEAR ED: Awesome drawing! You should have no difficulties in assembling your own beautiful building, as I can tell you are already reading directions!

Crusher run should be adequate for your sub-base. Most important is to get any clay removed from within upper levels of your grade and to have good compaction. Top two to six inches of your fill should be clean and drained sand or sandy gravel, again well compacted.

Photos: https://hansenpolebuildings.com/uploads/polebarnquestions/7bea6f6c3d75e192515b8bd12303c72c.jpg


DEAR POLE BARN GURU: If not spray foam on the underside of metal roof then I saw you recommend reflective siding insulation. Would that suffice in lieu of spray foam?


DEAR DYLAN: My first alternate choice would be to use an I.C.C. (Integral Condensation Control) https://www.hansenpolebuildings.com/2020/09/integral-condensation-control-2/ easy to install and no seams to worry about. Next choice would be a Reflective Radiant Barrier – we have it in six foot wide rolls with an adhesive pull strip to seal joints. Contact Materials@HansenPoleBuildings.com for delivered pricing (rolls are 128′ long).