An aluminium fascia trim holds the fascia in place at the top along the roof rafters. The fascia itself hides or conceals the ends of roof rafters. This gives a smart look to the house and roof. The fascia is fixed to the ends of the rafter ends which it covers. Therefore, for a roof with rafters at 250mm center-to-center spacing, the fascia trims will also be fixed/nailed at 250mm c/c spacing. While the fascia covers the ends of rafters, the soffit is a board that covers the underside of the rafters. In installing the fascia trim, it is necessary to first install an F-channel known as the soffit trim. This soffit trim supports the soffit boards under the roof rafters. After doing this, you can then fix the fascia as well as the fascia trim.
The fascia and soffit are commonly installed at the last stages of building a house or home. These can be installed separately and not necessarily at the same time. You also do not need to change or replace the fascia or soffit if they are in good condition.
This article focuses on the installation of aluminum fascia and soffits, making use of standard-size trims that are supplied by many building material producers. The instructions here are only a general guide as there are numerous ways of attaching aluminum fascia to the roof edges. The method you choose will depend on the structure of your soffits. Detailed instruction manuals for installing aluminum fascia are available from home builders.
Materials and Tools
- Circular saw
- Tape measure
Step 1 – Measure the Span of F-channel Fascia Trim
To determine the length of fascia trim required for the job, you must measure the external horizontal span of the wall on which the fascia is located. Measure the corner-to-corner distance, then write it down in your notebook. Divide the total length by the unit length of fascia F-channel trim to get the number of units required.
Step 2 – Position the F-channel
Position and hold in place the F-channel along the line where the roof overhang meets the walls.
Step 3 – Fix the F-channel
Take a stud finder and locate the positions of studs in the walls. Mark the positions of studs once you find them. Take a hammer and hit a nail into the F-channel, starting from the first stud.
Step 4 – Fix the F-channel on other Side
Install the F-channel on the other side of the building by repeating step 3.
Step 5 – Fit the Last Piece
As you progress installing the F-channel along the roof/wall intersection, the F-channel unit may be too short or too long to meet the end of the wall. Using a circular saw or hacksaw, cut the appropriate length and fix the piece as in step 3.
Step 6 – Install the Fascia
Fix the aluminum fascia to the roof edges on the ends of rafters. The fascia covers the exposed rough ends of rafters.
Step 7 – Measure Length of Roof Overhang
Measure length of roof overhang. Divide the total length by the unit length of fascia to get the number of fascia required.
Step 8 – Attach the Trim
Fix the aluminum trim at the top edge of fascia. Fix the trim to the edge of roof by driving nails with a hammer.
Step 9 – Fix the Last Piece
As you progress installing the fascia trim along the roof edges, the fascia trim unit may be too short or too long to meet the end of the wall. Using a circular saw or hacksaw, cut the appropriate length and fix the piece as in step 8.