Tag Archives: screws

How Roof is Done, “Logs” for Kits, and Two-Story “Shoffice”(?)

This Monday, Mike the Pole Barn Guru discusses the ins and outs of a roof, lumber provided with the Kit, and if we can offer a two story shed/office (“Shoffice”?).

DEAR POLE BARN GURU: How is the roof done? Do you use screws or nails? Is the frame wood or steel? MARY in MT. PLEASANT

DEAR MARY: Most of our buildings have steel roofing (although any roofing type can be used – shingles, tile, etc.). We recommend using some method of controlling possible condensation on underside of steel roofing – either a Reflective Radiant Barrier (https://www.hansenpolebuildings.com/2017/05/effective-reflective-insulation/), an Integral Condensation Control (https://www.hansenpolebuildings.com/2017/03/integral-condensation-control/) either of these two we typically supply or two inches of closed cell spray foam.

All of our steel roofs are fastened with 1-1/2 inch long, color matched and powder coated screws.

All Hansen Pole Buildings have a structural wood framework, making them very DIY friendly. This wood framework eliminates thermal transference issues found in steel frame buildings.

DEAR POLE BARN GURU: Looking at a 40x44x18 garage kit from sales at Home Depot. I read reviews & they talk about “logs” showing up & sawing the lumber. Is this the case?? Not much of a kit if you have to make your own dimensional lumber? RICHARD in SHILOH

DEAR RICHARD: Comments/reviews posted on The Home Depot® website for our buildings are literally nothing short of hilarious. Obviously these are not from verified purchasers of our engineered post frame buildings kits. All lumber needed for this and any of our buildings is sawn to size. Dimensional lumber has been planed (surfaced), dried to 19% moisture content or less and grade stamped to verify adequacy for structural usage.

 

DEAR POLE BARN GURU: Looking to build workshop and office, would like to know if the kits come in 2 story. Looking at 30 X 30 building with one garage door, two reg. door cut outs and 4 or 5 window cut outs. Looking to build late summer. Thanks, WIL in PROVIDENCE FORGE

DEAR WIL: Without sprinklers, we can provide up to 40 foot tall sidewalls and three stories. If you sprinkler 50 foot sidewalls and four stories.

 

 

 

Do Screws Back Out of Steel Roofing?

I had a question posed of me recently which included: “Where will the water go when the screws back out of my steel roofing”? While I answered the question at hand, I didn’t actually get into the why this might happen, or the solutions.

How to avoid the potential problem completely……use the right part, properly installed and driven into the correct material. Three easy steps, should not be so difficult.

The part – most commonly used screws are a #9 diameter by one inch long. When we tested steel roofing to determine sheer strength these screws pulled out of the framing under a minimal load (so minimal the steel didn’t even have ripples in it from the applied load). You can read more about our testing here: https://www.hansenpolebuildings.com/2012/08/this-is-a-test-steel-strength/.

Going to a longer part solved the pull out issues in our testing. We also went to a larger diameter part in our testing, the shank below the screw heading being ¼ inch across, while the threads are a #12. The larger diameter screws also have deeper threads, which means they bite and grip the wood more tightly.

Proper installation – screws which are over or under driven, or driven at an angle are prone to a myriad of problems, all which end in leaks.  Over driven screws tend to damage the wood fibers, leaving little solid material to hold the screw. Use a screw gun with a clutch, so screws do not get over driven.

Driving into the right material– what could go wrong? I see folks using OSB or plywood sheathing under roof steel with the idea they can drive the screws into the sheeting and still hold, even when the screw tip misses a purlin. These screws will come back out.

Green lumber (or dried lumber which has been allowed to get wet) will cause screws to be loose as the moisture leaves the lumber once the building is dried inside. Of course green lumber has a myriad of other challenges which can be read about here: https://www.hansenpolebuildings.com/2011/09/499green-lumber-vs-dry-lumber/.

Right part, right screw, right material below – drop the mic and walk off the stage. Three easy steps for proper screw installation and keeping leaks from happening.