Frequently Asked Questions (FAQ)

Will my shed last?
Did I need a site visit?
What is a good shed foundation?
Where should I put my shed?
What size shed should I get?
OSB or Plywood?
16″ or 24″ oc framing members?
What type of siding?

Will my shed last?

Forget about framing members and materials. Those are important, but the #1 failure is rot and decay on siding and floors. Typically, this premature siding failure is caused by the siding being too close to the ground, either from a sinking foundation or a poor design. The other problem, floor decay, is typically caused by inadequate ventilation or a sinking foundation. Damp moist air from the earth is trapped under the floor, promoting rot and decay.

We incorporate several features to combat these problems. We use pressure treated 2×6 floor joists as compared to 2×4 joists. This provides more distance between the siding and the ground. In addition, the post foundations raise the siding up and vent the space under the floor. Also, the smart panel siding is a superior building material. This siding is primed and treated with borate to resist rot.

The shed roof is also a common area for decay. We use drip edge aluminum flashing and 25 or 30 year owens corning shingles to construct the shed roof . The drip edge is critical to ensure that the weather doesn’t come in contact with the roof sheathing.

Another problem area is shed doors. Shed doors are relatively heavy and hinges are exposed and fastened to the exterior of the building. Often age and operation cause the doors to sag and become inoperable. On our wood sided sheds, we use Miratec material to prevent warping and decay. In addition, we use high quality plated hardware and fasten the hinges to the framing members, not just the door trim.

Do I need a site evaluation?

If your building site is level within a foot or two, we wouldn’t need to evaluate your building site. The foundation and site work are included in the price.

If you have a steeper building site, we can provide a permanent foundation for your building. Contact us for more information on the permanent foundations.

What is a good shed foundation?

If you have a level to moderately sloped building site, we provide the post foundation. This foundation consists of vertical 4X4 posts placed on concrete deck blocks. This method makes a great foundation. It looks much better than stacked blocks and provides a solid foundation for you building. Also, a sloped building area is easily leveled. You may consider landscaping or landscape fabric around the shed. Sometimes weed control and mowing around the posts becomes an issue.

If your buildings site is heavily sloped (more than 1 foot or so), you may need additional site work. We can provide this foundation work, which typically adds $500 to $1200 depending on your shed size and building site. Contact us for more information on the permanent foundations.

Where should I put my shed?

Anywhere you want it. Our sheds are panelized, so we locate your shed anywhere on your property. Usually, customers prefer the corners of their yard to keep it out of the way. Then keep the open areas for play sets or swimming pools.

What size shed should I get?

Usually, the bigger the better. If you have a lawn tractor and garden tools, an 8×12 or 10×12 is a good baseline. If you want additional storage for bikes, lawn furniture or a workshop, a 10×16 or 12×16 would be a good size. Just as a reference, our largest size is 12×20. This size is approximately the size of a one car garage. Also, you can take a look at our displays for a reference.

What’s Better OSB or Plywood?

We use OSB for our roof sheathing because it’s a better material.

Building Codes recognize these two materials as the same. Likewise, APA the Engineered Wood Association, the agency responsible for approving more than 75% of the structural panels used in residential construction, treat OSB and plywood as equals in their published performance guidelines. And wood scientists agree that the structural performance of OSB and plywood are equivalent.

See also:
http://bct.eco.umass.edu/publications/by-title/choosing-between-oriented-strandboard-and-plywood/
Often higher priced shed builders tout their plywood construction as a feature, saying that it is more resistant to moisture. There is no value to plywood sheathing. All wood products expand when they get wet. Besides, if the sheathing is getting wet, then your roof has failed.

The Shed Floor may be in contact with moisture. We use Advantech plywood on our premier shed floors. This link shows a comparision with plywood.

16″ or 24″ oc framing members?

The wall studs on our T-111 sheds are 16″OC. This is due to the siding manufacturer’s recommendation for that thickness of siding. With thicker siding, the spacing can be increased to 24″ with the same structural integrity. For example, our pine siding shed has 1×6 siding boards fasten to 2×4’s at 24″OC. Also, the wall is also reinforced with steel wind bracing.

Our floor joists are 2×6 @ 24″ oc. Our reason for this is that a floor with 2×6 @ 24″OC is stronger than a floor with 2×4 @ 16″ or even 12″ OC. You can verify this yourself with a span calculator:
http://www.awc.org/calculators/span/calc/timbercalcstyle.asp. Type in the member’s size and you can see that the 2×6 has a longer span.

In addition to 2×6 floor joists, we use 3/4″ advantech flooring on our premier on our premier sheds. This provides a super strong floor to store any heavy machine, atv’s, tractors etc.

What type of siding?

We have 3 siding options, all structurally equal:1. Unpainted T-111 Siding – Lowest price option. The smart panel siding is a quality building material. The primed surface is easily painted.2. Pine Tongue and Groove Siding – This siding provides the natural wood grain appearance. It is easily stained with a semi transparent stain to maintain the wood grain look.3. Vinyl Siding – The low maintenance choice. We use high quality Royal Building Products siding and white vinyl trim boards. No painting required, everything is pre-finished vinyl or aluminum.

Often Customers choose siding to match the likeness of their house. Other than that, it is personal preference. Take at our display models and decide.

Call: (724)230-6738 - Dravis Buildings specializes in custom, built on site sheds, serving Pittsburgh and surrounding areas.