Box end construction for fascias, soffits and gutters explained

February 17, 2020

The box end construction for fascias, soffits and gutters is located on the corners of a property’s gable end. Its purpose is to connect fascias and soffits on the non-gable end to the bargeboards that are situated at the gable end. This gives the corners of the roofline a neat finish.

Box ends have to account for the various angles on an individual roof’s gable end, meaning they need to be precisely installed. For anyone involved in box end construction, we’ve created a step-by-step guide that details the process.

Learn more in our related blogs:

What is the difference between a bargeboard and fascia?

What is a rainwater hopper?

What configurations for guttering and downpipes are there?

Step 1: Fitting the fascia board so it’s level

The first step when building a box end is to install the fascia board so it’s level with the face of the rafter situated at the gable end. When doing this, make sure that the soffit is cut either square or mitred and it has an overhang of 10mm.

Step 2: Creating the box end

Next, measure the required length of your box end and cut it from a deep fascia board. The front edge of this piece should tilt up, so it matches the height of the fascia board that is already fitted.

Step 3: Cutting a length to the gable wall

For the third step, you need to measure the length of the return to the gable wall and cut this length from a fascia board. This piece should sit in front of the rafter end and run up to the box end piece that you made in the previous step.

Step 4: Create the corner joint

For the next step, you should remove a section from the corner joint that will be used to fit around the rafter. This will be used as the joint for the pieces that were created in steps 2 and 3.

Step 5: Attach the bargeboard

Finally, you should fix the bargeboard directly to the rafter at the gable end.

Roofline Solutions – suppliers and installers of high-quality uPVC and aluminium roofline products

Black box end detail with brown gutter As box end construction is a highly technical job, we supply and fit all the materials required for it. This includes high-quality uPVC fascias and soffits, uPVC and aluminium gutters.

So, if you’re homeowner looking for roofline products and services, why not give us a call on 01252 852 336 or contact us online. Or, if you’re an installer looking for supply only at competitive trade prices, why not pop down to our Surrey trade counter to speak with a member of our friendly, expert team.