Used Shed Repairs

Used Shed Repairs

When you buy a used storage shed, there may be a few things that you need to do to bring it up to tip top condition. If there are things that need repair, it is best to do it early on, before you start to put the building into use.

This page is a general guide to used shed repairs, and it assumes a certain amount of familiarity with the tools and techniques to do the job. It is not too complicated for the average person


Let’s start from the bottom: If the floor is sagging a little in spots, it is probably just sagging between the floor joists. If it is really severe, it could be a problem with one or more of the floor joists themselves.

Floor joist repair

Hopefully you thought to check this before purchasing the building, but if not, all is not lost. Try to get a good look at the underside of the building while it is loaded on the trailer. This may be the best chance to check. If there are any serious problems like termite damage, or broken joists, you may want to replace them before you get the building loaded down with stuff. If the building is small enough you may be able to work one end in place and then work the other in place from the outside. This is somewhat dependent on how the skids are placed. Attach at both ends, and then to the flooring from inside.

Flooring repair

If the joists are not damaged, but the floor sags between them, you can either replace the existing plywood with new material, or add new flooring over the top of the existing plywood. Be sure that your new flooring does not interfere with the operation of the door.


There will probably be few problems with the walls, but if you need to replace some damaged siding, now would be a good time to do it. This is a pretty straightforward process that requires yiou to remove the existing damaged piece and replace it with a new one. Be sure to get materials that match the existing materials. Check the walls for loose fasteners. If nails, you may need to replace some, get the right size, and caulk and paint the nail hole. If screws are used firm them up snugly, being sure not to strip the threads by over tightening.


Frame structures rarely present any problems. There may be splits, or water damaged floor plates or uprights but once again, it is simply a matter of replacing anything that is damaged.


Doors and windows can be problem areas. Look for discoloration around the openings. A little caulk can solve most problems. In some cases flashing around windows or doors may need to be straightened or replaced to keep the water out. To do this, you may need to remove a couple of siding pieces, but it will be worth the trouble to prevent water damage. Check the floor around the door for weakness and replace any areas that have suffered from water damage.


Roofing is the place where most used shed repairs are needed. Check for areas that may have leaked in the past. Look for signs like discoloration on the roof rafters and joists. If you find a problem, there may be some damage on the top.

Metal roofs

With metal roofs this can simply be a loose screw allowing water to seep through. Check for rust through, and if a section needs to be replaced, replace it. If it is simply loose, remove the screw, add a drop of silicone sealer to the hole, and replace the screw by tightening it firmly, but not so tight that you risk stripping the threads.

Composite roofs

On a composite roof, look for loose or missing shingles and replace whatever you need to replace. It may often be easier to simply re roof the whole thing. Be sure to nail only through the top part of each shingle which will be covered by the next row, and add drip flashing to the edges.

Shed repairs and maintenance

Used shed repairs at the beginning will help to preserve your building, especially when followed up with good shed maintenance practices. To learn more about shed maintenance see: Used Shed Maintenance

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