What does a fascia board do?
Fascia boards are part of the roofline system, fixed to the ends of the roof rafters beneath the roof tiles or sheets. They serve as the mounting point for the guttering. Traditionally made of wood, fascia boards are now often constructed from PVC to reduce the need for repainting and maintenance due to exposure to the elements.
What is the difference between soffits and fascia's?
Fascia boards are vertical planks attached to the ends of the roof rafters, where gutters are mounted. In contrast, soffits are horizontal boards fixed to the underside of the rafters, enclosing the roof overhang. Both fascia and soffits are typically made from the same materials (PVC or wood) and are often used together because of their roles in roof structure.
What size do fascia boards come in?
Fascia boards come in a wide range of sizes and generally two thicknesses: one for cap-over fascia and another for replacement fascia. PVC fascia boards usually have a standard thickness of 9mm, coming in 5m lengths, with widths ranging from 100mm to 600mm. They are easy to cut for smaller projects, and a variety of joints are also available.
How do you attach fascia boards?
The most common method for fixing fascia boards to rafters is by nailing them on, with special color-coded nails available for plastic fascia boards. Screwing the fascia board on is also an acceptable method, often using color-coded plastic screw caps for a clean finish.
Do you fit fascia or soffit first?
Typically, the soffit board is installed first, as plastic fascia boards have a return that caps around the edge of the soffits. While it is possible to fit fascia boards first, it is more challenging to insert the soffit into the fascia's lip and find the necessary fixing points.
How thick should my fascia board be?
Plastic fascia boards generally come in two thickness ranges. The first is a capping board, approximately 9mm thick, designed to be fixed over existing timber fascia boards—ideal for renovations. The second is a replacement board, usually between 16mm-20mm thick, intended for attachment directly to the ends of wooden rafters, commonly used in new builds.
Can I put new fascia over existing wood?
Yes, it is common to use a capping fascia board to cover existing wooden fascia boards. However, it is crucial to remove any rot from the original fascia to prevent it from spreading behind the plastic capping boards. Once covered, the old fascia will have a weather barrier that provides protection and extends its lifespan.
What are the common problems with soffits and fascia?
Fascia and soffit boards are exposed to weather conditions and high up on buildings, making them vulnerable to water, UV light, and temperature fluctuations. Wood can suffer from wet rot, dry rot, and warping under these conditions, requiring regular painting or varnishing for protection. In contrast, plastic fascia boards do not rot and require less maintenance, making them longer-lasting and more cost-effective over time. A common issue with plastic fascia boards occurs when a capping board is used inappropriately instead of a full replacement, particularly when gutter systems are involved, due to the added weight of water and snow.
Can I replace my own fascia board?
Fascia boards are often replaced by DIY enthusiasts on single-story buildings such as extensions, garages, and garden sheds. However, replacing fascia boards at higher levels is usually done by professional installers due to access difficulties and safety requirements when working at height.
Do new fascia add value?
Yes, replacing old, worn fascia and soffits with new plastic options can be a cost-effective way to enhance the property's value. New fascia boards improve the home's appearance and can prevent potential buyers from being deterred by maintenance issues, which may indicate underlying problems like water ingress or pest infestations.
Do you need planning permission for replacement fascia and soffits?
Generally, planning permission is not required for maintenance or replacement of fascia and soffits. However, in conservation areas or listed buildings, there may be restrictions to maintain aesthetic consistency, so it is advisable to consult local building control if you suspect your property is in such a region.
