Multiply the 1-1/2 inch width of the fascia board by the slope of the roof (e.g. 4/12). 1.5” times 4 divided by 12 = 0.5 or ½ inch. For a 2×6 fascia board at a 4/12 slope, the trim size would be 1-1/2 inch x 5 inches for an overhang without a soffit.

What size wood should I use for fascia?

You construct fascia boards out of 1-by lumber. The width depends on the width of the rafters, but since builders generally use two-by-six or two-by-eight lumber for roof construction, the most common dimensions for fascia boards are one-by-six and one-by-eight.

How wide are fascias?

Replacement fascias do vary in thickness by manufacturer, but the rule of thumb is that to qualify structurally as a replacement board they should be somewhere between 16mm and 25mm thick – our most common range is the 18mm Replacement Fascia.

What is the best board to use for fascia?

Typically for fascia boards, cedar and redwood are popular choices given their resistance to rot from excessive moisture. However, if you prime and paint the fascia, then fir, spruce, and pine can also make beautiful choices from a design standpoint.

How wide are soffits?

While not all soffit board sizes are the same, the width of most soffit falls in the range of 16 inches to 24 inches when used to cover the eaves of the home. In addition, standard soffit sizes feature a ¼-inch thickness, too, which can help with installation.

Should I use treated lumber for fascia board?

Purchase pressure-treated lumber to replace your fascia boards as a way to extend the life of the repair. Pressure-treated lumber is designed for outside applications and resists rot, moisture and insect damage. … Cut the new lumber to size and secure it to the rafter ends with galvanized finish nails.

Should I use pressure treated wood for fascia?

It’s not necessary to use pressure-treated lumber for fascia. In fact, most planking sold for fascia is not pressure treated. However, it is vital that the fascia be primered and completely painted with a good quality exterior enamel or acrylic paint.

What is the best timber for fascia boards?

Timber: Popular hardwood and softwood timber species for fascia board are western red cedar European oak, Utile, Iroko, Douglas fir, Larch and Accoya. The latter is an extremely durable sustainable option. All types can be available FSC certified and suitable for domestic applications.

What type of wood is used for eaves?

All About Eave Eaves are simple boxes. The bottom — or soffit — where the damage is, is typically thin plywood, usually 1/4-to-3/8-inch-thick. It’s cut in long sections and butt-jointed together with a thin piece of plastic molding that slips over both ends forming a joint.

What is behind the fascia board?

The soffit board is tucked away under the fascia board. It is usually the board that you see most of from street level. The soffit can be ventilated to allow the flow of air into the roof area.

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What material do you use for fascia board?

They can be made of polyvinyl chloride (uPVC), non-corrosive sheet metal, or wood. In non-domestic structures, they can even be made out of ornately carved stone. However, most homes and residential structures in the United States tend to use wood fascia boards. Wood has proven to be the most effective board material.

How thick is a fascia?

Old (mm)Effect sizeAnterior lower leg0.65 (0.55–0.90)0.43Posterior lower leg0.65 (0.52– 0.90)0.39Anterior thigh0.83 (0.57–1.20)0.35Posterior thigh (fascia)0.95 (0.72–1.95)–

How thick are soffits?

Standard soffit material is 3/8- or 1/2-inch-thick exterior plywood in pine (or similar softwoods) or cedar. Common, but much less durable, is Masonite or similar fiberboard soffit, as well as much more weather-resistant fiber-cement.

How do you measure soffits and fascias?

Step one: Measure the width of the space under the eaves (from the wall to the outer eave board). Step two: Cut the soffit board to the correct length and width. Step three: Nail the soffit board to the timber using plastic capped nails or pins (usually 25-40mm pins are most suitable).

What size soffit should I use?

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.

What's the difference between eaves and soffits?

In the widest sense of the term, soffits can refer to the underside of almost anything that’s constructed, including arches and porches. Another way to explain it is to say soffit is the exposed siding underneath your roof’s overhang. … To summarise, an eave is part of a roof system and a soffit is part of the eave.

How wide are eaves?

As a rule of thumb, your eave width should be 45% of the height from the bottom windowsill to the bottom of the eaves.

Do you need to prime fascia?

Priming and Painting Soffits and Fascia Boards Primer is important if your soffits and fascia boards are in bad condition (bare wood spots, rust stains, tannin bleed). Oil primer is best for priming and sealing over surface stains and bare wood. With oil primer, the stains won’t bleed into your top coats of paint.

Can I use plywood for soffit?

plywood are often used for soffits, optimum appearance and finish performance is achieved by using panels with Medium Density Overlay (MDO), or textured (such as APA 303 Siding) or sanded A-grade faces. Top-quality acrylic latex house paint systems perform best and are the only systems recommended for A-grade faces.

What happens if you paint treated wood too soon?

Your Board Will Warp If you paint treated lumber before it’s dry, you cause the non-painted side to dry faster. And when one side dries faster than the other, you get warping. You’re better off waiting until the wood is dry; otherwise, you’ll end up with warped wood, peeling paint, and a big project.

What material is used for the soffit and fascia?

While soffits and fascia are traditionally constructed from materials like aluminum and wood, many homeowners are now choosing ones made from synthetic and composite materials like UPVC and vinyl because they offer easy maintenance and durability.

Can I use common board outside?

Common boards I use these boards for a lot of woodworking projects and with great results. I’ve even use them for outdoor projects like the kids patio chairs, treasure chest toy box, and nautical picnic table and they hold up well when painted and sealed properly for outdoor use.

What is the best wood to use for soffit?

Although unsanded and touch-sanded grades of plywood are often used for soffits, optimum appearance and finish performance is achieved by using panels with Medium Density Overlay (MDO), or textured (such as APA 303 Siding) or sanded A-grade faces.

How do I protect my fascia board?

To protect and prolong the life of your fascia board, there is an option to have it wrapped with aluminum or vinyl material. Ensuring that no water gets to the wood will allow it to last 20 years or more.

How do you fill the gap between fascia and wall?

Slowly move down the joint to apply a steady bead of caulk into the gap, instructs Ron Hazelton. Caulk about 2 feet of the joint and stop to smooth the bead with your finger. Apply more caulk to the gap as needed to fill it completely. Continue caulking until the entire fascia board has been sealed.

How often do you nail fascia?

Nail every 24″, but do not nail too tight. Nails should penetrate a minimum of 3/4″ into nailing surface. Pre-drilling hole slightly larger than nail diameter is recom- mended. 4) When overlapping fascia panels, first cut a notch in the underlying panel.

How are fascia boards attached?

The fascia board is nailed to the rafter feet and usually has a rebate or lip for the soffit boards to slot into. They are then either fixed to a batten that is attached to the brickwork, or sat on top of the last course of brickwork.

Can fascia boards cause damp?

While excessive condensation can be a cause of damp, in the roof area it is most often caused by loose or missing tiles, lack of ventilation, damaged guttering or rotten fascias. … If your fascia board is made from timber and they haven’t been replaced for a while, regularly check your loft as well as your roofline.

Can you replace fascia board without removing gutters?

There is no way to replace the fascia board without removing the gutters, as the gutters are mounted to the board. So, your roofers will carefully remove the gutters. Typically, the same gutters can be re-installed on the new fascia board, if they are in good condition.

Are fascia boards structural?

The fascia board is the one inch thick board that is nailed to the lower ends of the rafters, roof joists, or trusses to close the eave (Figure FB-1). … Technically it is not considered a structural member, but it provides structural support for the gutters, when they are nailed to it.

What kind of nails do you use for fascia?

It calls for 2-inch, 16-gauge, corrosion-resistant finish nails only when you are attaching fascia to double sub-fascia. Nails should not be closer than 1 1/4 inches from the edges and no nearer than one inch from the ends. With pneumatic nailing, Hardie Trim recommends driving the finish nails flush.