SHOP BY SIZES
MORE SHED PAGES
SHED PLAN RESOURCES
The eighth step in the How To Build A Shed series
Welcome to this shed trim installation tutorial. Here you will learn about the steps to installing exterior trim on your storage shed.
Trimming the shed is what gives it its character. Most sheds that are sided using sheet siding like 4x8 rough cut plywood or T1-11 will require a trim piece to be installed around all doors and windows, corners and roof soffit and facia. This trim helps seal the corner and roof connections as well as make the shed look good. This article teaches you how to trim a shed with basic 1x4 trim pieces but any size trim pieces may be used.
The fascia trim should be installed before the roofing so that the drip edge can overlap the fascia boards. The material used here is an O.S.B. material that has a wood pattern on the face.
The first step to installing trim on the shed is to install the fascia on the eves and gable ends of the shed roof. The eve fascia is first because the rake fascia on the gables will overlap it on the ends.
Start by measuring the eves and cutting the fascia to length. Make sure the top edge is flush with the top of the roof sheeting and the ends are flush with the siding and then nail the fascia trim boards onto the sub fascia.
Install the eve fascia on both eves of the shed roof using 8d galvanized nails.
The second step is to install the rake fascia. Use a trim board that is a bit longer than necessary to cover the peak to eve distance and mark the roof pitch angle using a framing or speed square on one end.
Start by marking a square line across the board. Keep the pivot point of the speed square on the end of the line and pivot it until the edge of the board lines up with the roof pitch mark on the Common scale.
Mark the angle on the board and then cut it.
If you have a mitre saw you can set the angle on the saw and cut the angle into the board without marking it first.
Hold the fascia board in its position and verify that the angle is correct. The ridge end of the trim board should be vertical when the top edge of the trim is flush with the shed roof.
With the fascia board lined up with the ridge position and flush with the roof deck, use a pencil to mark the cut off point on the long end of the board by tracing along the face of the eve fascia onto the back side of the rake fascia board. This will be your cut mark for the fascia.
Cut the rake fascia board and double check the length.
Nail the rake fascia on making sure that the nails go into the roof rafter behind the fascia.
Cut the fascia board for the other side of the roof gable and hold it in position to check the angle against the fascia board that is already installed. Adjust the angle if necessary to make a good fit.
Double check the length of the fascia board and cut the lower end to the angle of the eve fascia.
Nail the rake fascia on making sure that the nails go into the roof rafter behind the fascia.
Measure, cut and install the other side of the gable making sure the the joint where the two boards meet at the ridge is tight and the eve end is flush with the eve fascia.
Repeat the process and install the fascia on the opposite end of the shed in the same way.
The third step is to install the soffit on the eves of the shed roof. If your shed does not have a covered soffit then you can skip this step. The soffit goes on before the corner trim so that the corner trim can butt up against it.
Use a tape measure to measure the length and width of the soffit. The ends of the soffit board that are on the ends of the shed will butt up against the fascia board. The long edges should touch the shed wall and the back side of the fascia.
The ends along the shed wall will rest on half of a roof rafter so the next piece can also attach to the rafter.
All joints between soffit pieces must have a roof rafter behind them. So cut the soffit pieces so that they overlap the underside of the roof rafter by three quarters of an inch.
Cut the soffit pieces from trim boards or from scrap siding pieces.
Mark the rafter locations on the shed walls so you will know where to place the nails when the soffit covers the rafters and you can no longer see them.
Put the soffit boards into position and nail the soffit boards to the bottom of the roof rafters. Use one 8d nail at each rafter.
Install the soffit on the remaining open soffits around the shed.
The fourth step is to install the corner trim. When installing corner trim you will want the trim on the front of the shed to cover the edge of the corner trim piece on the side of the shed. This means that you will install the trim on the sides of the shed first and then the front.
Measure and cut a piece of trim so it will fit from the soffit down to the bottom edge of the siding.
Hold the piece of trim on the corner of the shed where it will be installed and then hold a scrap piece of trim on the other side of the corner to help you properly position the full size piece that will be nailed on.
Make sure that the edges are flush with each other and the corner gap is closed and then nail the trim onto the shed. Use 1 8d nail every 12 inches along the piece of trim and 2 inches from the ends.
To install the front piece of the corner trim you will first cut the roof angle onto a piece of trim that is about 2 to 4 inches longer than needed to cover the corner. Set the trim piece on the corner and check the angle for a good fit. Adjust the angle if necessary.
Hold the siding piece in place with the top edge butted up against the gable fascia or soffit if your shed has soffit on the gable ends.
Use a utility knife to mark the bottom cut location by pressing the knife blade into the wood at the bottom edge of the siding. Remove the trim piece and cut it on the mark.
Make sure to note where the wall stud is behind the trim before nailing. There is typically about one inch of space from the corner of the trim to where the wall stud is behind the siding. Hold the trim piece in position and nail it to the corner.
Install the other four corners in the same way.
The fifth step is to install trim around the door opening. The door trim is installed flush with the edge of the siding that is held one inch back from the door opening framing.
The header trim piece is installed first.
It should overlap the two side casing trims. Measure and cut the header trim according to your trim design.
Before nailing the header trim on you will first make sure that it has the proper spacing on each side of the door by holding a scrap piece of trim up on the sides of the door and adjusting the header trim until the two sides are equal.
The casing trims are installed after the header trim piece.
Measure from the bottom of the header trim to the bottom of the siding to find the lengths for the casing trims on the two sides of the door opening.
Measure, Cut and install the piece of trim for the the bottom of the door opening.
What Customers Say
"I'm declaring victory over the shed project. Thanks for the great plans and for answering my various e-mails along the way." John
You guys are awesome! Thank you very much!" Denise
"Thank you, The plans are Awesome!" Bob
"Thanks for the designs! They were especially useful since I didn't have any construction experience prior to this. Obviously, I made some modifications with the finishing, but I am quite happy with the size and structure of the shed." Matt
"Thank you Chris for the super service. The plans look great and I can't wait to get started." Frank
"I think these shed plans are great. I am very handy, but it is nice to have plans with measurements that are easy to follow. Most plans are to detailed, and confusing. I will prefab shed in garage, then in early spring put together. Thank you very much." Paul
"Hi. So I bought your plans and built the shed. Worked great, I would say 10/10...
Very easy to read the plans, very easy to make by following the steps in the "how to build a shed book" that comes with the plans. Overall, a very satisfied customer." Martin
"I just purchased your shed plans for the 6x8 Lean To Shed. The quality of the plans is top-notch... Thanks for the quick reply! The quality to price ratio of your shed plan products is incredible. Not to mention your awesome support. I will most certainly be recommending icreatables shed plans to anyone I know who is interested in having a shed! Thanks again,"
"Thanks, Christopher. These plans and material lists are very complete, clear and easy to follow. Very nice work." Van
"AWESOME CUSTOMER SUPPORT…" John
"I promised to send a photo of my completed shed. My wife and I are very happy with the way it turned out. The plans were exactly what I needed to get going... It was a lot of work, but I learned a lot and it was fun. Thanks for your help." Mike
"Your plans were very helpful. It was well worth the small price I paid for the extra help. Thanks." Robert
"Hi Guys, I built this shed as a well house and it is terrific, even though I have never been anything close to a carpenter. I have arthritis so I used screws everywhere but the roof, and I believe it will be stronger for it.
"Our shed looks great, thanks to your plans." Donald
"I had already paid out twelve dollars and change to another do it yourself website and was totally unhappy with the plans I got. Luckly I found your website and paid less for somthing ten times better. Thanks." Allen
"I have received (the plans), and they look wonderful! Can't wait to get started (next week for sure!) Thank you so much!" Phil
"BTW - so far after reviewing I'm thoroughly impressed with what you've done here in the attachments. For someone like me who isn't "handy" you've made it very easy for me to tackle." Fran
"Yes I did (receive the plans) ...freakin awesome! Thanks again!!" Jessi
"I finally finished my 8x12 shed! The plans worked out great. I deviated from the plans slightly on roof edge and the door. I plan to put gutters and down spouts on it and we wanted a little more of a country barn door look. I really appreciated the templates for cutting the notches for the rafters. Detailing which nails I needed for each phase of the build was also very helpful. Thanks again," Dale
"I really like the instructions, they are much more than I expected." Randy
"Thank you for your input. I just purchased the 4x4GN-generator-shed-plans. Wow. The plans look fantastic. And the parts list is very nice! I plan to modify it with 2 or 3 side doors for extra ventilation as needed. Thanks again for your time." Vern
"I like the idea of constructing the unit from scratch, what I call stick building it piece by piece - we've seen the lightweight think plastic walled units from (a home store), ok I guess but the heavier wooden unit with permanent roofing will last longer and give better service. It was a good plan and easy to build from, I don't think the contractor had any difficulties with it." Gary
"I purchased your plans for a 12 x 12 shed w/garage door. Your plans were great and I'm very pleased with the results.
I also used your free "how to build a ramp" plans which were very helpful." Regards, Donald
"Hello! Our Shed project went swimmingly well this weekend! The only thing you’ll notice we did different was to order the doors from a lumberyard rather than building them…. Which worked out pretty well. Thanks for your help!" Maureen
"Got them. I'm very pleased with plans."
"Great shed plans, the material list helped a lot as well!"
"Thanks very much! Great service and good prices. I'll be buying more plans from you in the future!" Cheers, Darren
"Attached are photos of woodshed I built from your plans....the plans made it very easy....Thanks" Mike
"It to me a year of intermittent sweat swearing and blood, but I finished it, and I'm proud of it. Thanks for the awesome shed plans!" Jessica
"I recently helped a family member build an 8x12 shed using plans he bought from your site and found the plans and materials list to be very helpful. I'm about to start a project building my own storage building, a 12x20, and thought I'd buy plans from you as well since his went so smoothly." David
"I was sceptical about buying shed plans online but your extremely customer service and willingness to provide extra help to a "newbie" have won me over. Thank you.
Thanks again for your helpful information! Pictures to come!"