What should be installed first siding or soffit?

Asked By: Allan Umayor | Last Updated: 31st March, 2020
Category: home and garden indoor environmental quality
4/5 (69 Views . 40 Votes)
The Best Installation Approach
Most experts recommend installing the soffit first. You will want to calculate distance, determine how many siding rows will be needed, and then slice the top of the trim board to ensure everything is even.

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Similarly, you may ask, do you install soffit before or after siding?

Soffit Installation. Soffit is used to enclose the underside of an eave. The installation of soffit will determine the positioning of the inside and outside corner posts. It also is necessary to complete the soffit before the final course of siding is installed on the wall.

Beside above, what is J channel soffit size? When installing J-channel at either the wall or the fascia board, nail the J-Channel every 12"-16". If the soffit is to turn a corner, cut and install J-channel so there is 1/4" for expansion at each of the adjoining walls and adjoining fascia boards.

Keeping this in view, can soffit be installed on an angle?

soffit vents on angle. The house has very deep eaves, and the windows are set high on the wall, so it was impossible to box the eaves so that the soffits are parallel to the ground. In other words, the soffits are installed parallel to the roof line.

What is an F channel for siding?

The F-channel is a thin vinyl strip that is sold where siding is sold. The upside down F creates a shelf for the soffit to slide into and rest on. The F channel can be easily confused with the J-channel that is used to cover the ends of the vinyl at the corners of the house and around windows.

35 Related Question Answers Found

Does exterior trim go on before siding?

The 'trick' to siding and exterior trim is not so much the application of them as it is the sealing and flashing of the openings before starting trim/siding.

How do you install vinyl siding over old wood lap siding?

How to Install Vinyl Siding Over Wood Siding
  1. Measure the amount of vinyl siding that you'll need to order.
  2. Take your measurements to the hardware store and order your choice of vinyl siding.
  3. Start with the side of your house with the least doors and windows.
  4. Install the starter strip.
  5. Trim the doors and windows with J-channel siding.

How do I join F channel?

Hold the first strip of F-channel against the siding along the top edge of the chalk line. Position the F-channel upside-down, with the slot facing the F-channel that is nailed to the fascia board. Drive nails through the slots in the F-channel and into the side of the house every 6 to 12 inches.

Does siding go trim?

Yes, it is okay to install trim over the siding.

What is the difference between soffit and fascia?


Typically a soffit is used in the area beneath the eaves on the exterior of a house to close the space beneath the eave. The soffit extends from the side of the structure to the edge of the eave. Fascia is used to create a barrier between the edge of the roof and the outside.

How much does it cost to install soffit and fascia?

Replacing your soffit generally costs about $20 to $30 a linear foot installed, while replacing your fascia costs about $15 to $25 a linear foot installed. Prices for the project depend on a number of factors, including the materials used and the size of your house.

What is the purpose of a soffit?

Soffit serves both an aesthetic and functional purpose for a building's roofing system. It's the skin that covers your eaves — without it, you would see your rafter beams fully exposed. With vented soffit, air can flow through the vents to provide regular air circulation to your attic.

Can you install vinyl soffit over wood soffit?

Installing Vinyl Soffit and Fascia
While it is certainly feasible to install vinyl fascia and soffit over wood, you need to ensure that you are keeping in line with the local building codes. Make sure that your attic has enough ventilation before affixing your vinyl soffit over the plywood.

How do you install drip edge?


Install roof drip edge along the eaves, add underlayment, then place drip edge along the gable end. The best way is to install the roof drip edge only along the eaves first, then place ice-and-water barrier (in the snowbelt) or felt paper (underlayment) over the drip edge.

What is soffit made of?

Its primary use is for the roof overhang. Soffit can also refer to the horizontal underside of similar architectural structures. Most soffits are made from vinyl, which is effective at withstanding degradation caused from heat and moisture. But it is often made of wood, metal or vinyl.

How do you replace soffits in a house?

The good news is that you won't even need to climb on top of your roof to fix your soffit!
  1. Pry off your shingle mold.
  2. Remove the fascia.
  3. Remove the soffit's rotting wood.
  4. Take out the rotted rafter (when applicable).
  5. Install the new rafter (when applicable).
  6. Prepare the new soffit.
  7. Attach the soffit.
  8. Attach the fascia.

How wide are soffits?

Soffits usually range from 16 to 24 inches wide.

How do you seal soffit gaps?

Start at the end of a fascia board and caulk the corner edge where two boards meet. Smooth the caulk bead with your finger and begin caulking the joint between the fascia board and the soffit (also known as the eave). Slowly move down the joint to apply a steady bead of caulk into the gap.

What is the purpose of soffit and fascia?


Roofing Parts-The Purpose of the Fascia & Soffit. Fascia, on the other hand, is a part that can easily be damaged. It is the parallel edge that is connected to the ends of the trusses or rafters. It's where the gutters are attached. Its primary job is to act as a protection between the edge of the roof and the outdoors

How do you replace soffits and fascias?

Fascias and Soffits
  1. Into a upvc channel fixed to the wall of the house.
  2. Screwed to a wooden batten fixed above the soffit to the wall of the house.
  3. To the top of the outer brickwork using either a batten down from the rafters or a structural glue between the soffit and the top of the wall.

How do you measure soffit?

Multiply the total length by the width to obtain the area of soffit needed to fill the gap. For example, if the total eaves length is 110 feet, and the width is 2 feet, multiply 110 by 2. The result, 220 in this example, is the number of square feet of soffit required.