Plastic Fascia & Soffits
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Terminology: Soffit is the boarding that lays horizontally in between the fasia board and brick work. Fascia board is nailed vertically to the end of the roof rafters; it supports the soffit, and gutting is also secured to it. There are several types of soffit and fascia. |
Fascia: There are two methods of installing plastic facia. The first is to use a thick self supporting profile that is nailed directly to the rafters; we call this replacement fascia (figure 1) as old timber fascia has to be removed before this can be installed. The second method is to retain the old timber fascia and clad it with capping fascia (figure 2) which is thin and needs to be supported by the old timber fascia. Of the two methods, using replacement fascia is by far the best method. It is alleged that plastic capping fascia can trap moisture causing the existing timber fasia to rot. Both types are available in various heights. From figures 1,2 and 4 you will notice a green colour on the products; this is a protective film and should only be removed during installation. Looking at figure (5) it can be seen there is an irregular large piece of fascia where the diagonaly oriented barge board fascia meets the horizontal fascia; This is called a 'boot' and the tallest of fasia is required for this.
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Figure (1): Replacement fascia profile.
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Figure (2): Capping fascia profile.
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Soffit: There are two types of soffit: hollow or solid. Solid is more expensive but gives a smooth finish; See figure (4) and (5). Hollow is cheaper and has a ribbed appearance; See figure (3). The solid soffit is available in a vented type, as illustrated in figure (5). All soffits on new properties and extensions have to be vented. Both types are available in various widths.
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Figure (3)
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Figure (4)
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Figure (5)
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Prices and Sizes
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Replacement Fascia. As in figure (1). 18mm thick |
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Capping Fascia. As in figure (2). 8mm thick |
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Accessories for replacement and capping fascia: To make a join or corner, joiners and corners are super glued to the facia. To cap the ends of the fascia, encaps are used as illustrated in figure 6. |
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Solid Soffit. (As in Figure 4). Vented and unvented. 10mm thick |
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Hollow sofit. As in figure (3). 10mm thick |
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| Trims for hollow and solid soffit. | ||||||||||||||||
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As illustrated in the picture, from the left to right:-
'H' trim is used as a joining piece. 'F' trim is used as a starter from a wall edge. 'J' trim is used as a start from a flat surface. 'X' trim is used to make a corner. |
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| Accessories | ||||
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Nails: Stainless steel with plastic tops. Nails are available in 65mm and are used for replacement fascia. £8.50 for 100no |
Window board capping 250x3mm: Used to cover old timber window boards. 5m = £21.00 and 2.5m = £10.50. Pictured here with green protective film which is removed in installation. |
You will need to cut a circular hole in the soffit to install this vent. |
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Pins: Stainless steel with plastic tops are available in 30 & 40mm lengths; Used to fix capping. £8.50 for 200No. |
Endcaps for window board capping. 1 piece does both ends. Just snap in half. £1. |
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Last updated 12/6/2008.
(Figure 6)
