Upvc Plastic Bargeboards to Replace Timber

Bargeboard is the term used to describe a fascia board fixed to the apex section of a roof. The photo below is of a Upvc bargeboard fixed to the timber rafter with plastic capped nails.

Bargeboards are part of the roof trim and can be purchased in a range of colours and there is also a range of different profiles. Upvc systems are more popular these days but traditional timber can still be used and is often specified for period properties. Plain Upvc bargeboards are no different to Upvc fascia boards and even though they have two names they are often identical.


Repairing a Rotten Board

Rotten bargeboard to roof apexBecause the boards are fixed at an angle any rainwater tends to travel down the board to the lowest section (near the guttering) causing rot damage or if the board is not sealed to the underside of the roof overhang, then water may enter at this point.

Either way, water causes problems for external timber and unless the boards have a good coat of paint, rot will set in. Sometimes it is possible to cut out the rot and replace it with a new timber. It should then be treated with a knot solution and the appropriate paint finish applied.

Unfortunately this isn’t always possible. As you can see from the photo to the right, it is sometimes best to completely remove the old rotten bargeboards.

Replacement Bargeboards

New plastic Upvc bargeboardOld boards can be fully removed and replaced with a new Upvc version. This is the choice many homeowners have decided to make because these plastic boards are virtually no maintenance.

There is also a wide choice of colours and finishes including woodgrain effect to closely match any existing window frames or general color themes your property has.

A common question is if I replace the bargeboards, do I need to renew the roof tile cement as well? The answer is maybe. Sometimes the cement is fixed directly to the board, so if you try to remove the old timber it will disturb the cement. On some properties the cement isn’t fixed to the boards and they can be removed without causing any damage to the cement at all. Because all the fixings are hidden, you won’t know if the cement will be disturbed until you try and remove the boards.

Bargeboards Do Not Require Ventilation

Unlike boards at the lower section of the roof, such as fascia and soffits, with barge boards there is no need to provide ventilation.

Ventilation should be placed at the eaves levelĀ andĀ not on a gable/apex.

Hot air rises, so to avoid increases in hearing bills its best to avoid placing air vents near the very top of the roof – unless you have exceptional roof insulation.

This page contains more information about the importance of roof ventilation.


One Response to “Upvc Plastic Bargeboards to Replace Timber”

  1. Ken McCandless22/08/2012 at 8:20 am #

    I have pvc dry plastic verges to my barge boards which seem to have been secretly fixed to the barge boards, possibly from the rear, at initial installation stage of the tiled roof, some 30 years ago.

    Will replacement of the existing timber barge boards with new pvc barge boards, damage the existing dry verge thus requiring its replacement? If so, how easy would it be to fix new dry pvc verges in conjunction with replacing the barge boards?