Capping wooden fascia with upvc- good practice?

[jonnyguitar21]

Hi all,

I got some builders around the other day for a quote on some work which included I thought replacing some wooden facia boards which have very peeled paint and could be rotten. The builders said they would just cap the boards with upvc- my question is- is this good practice or just a quick, temporary fix?

cheers!

 

[iwaters]

They wooden baods should be removed. Capping is a bodge.

The wooden boards will hold mositure and will rot beneath the upvc is one reason why, there are no doubt many others.

 

[AronSearle]

It may be worth inspecting them to make sure they don't just need a clean and re-paint.

If they are decayed, then they should be removed so that you can check the timbers behind for any decay as well.

iwaters is right, it's a bodge.

 

[^woody^]

They wooden baods should be removed. Capping is a bodge.

The wooden boards will hold mositure and will rot beneath the upvc is one reason why, there are no doubt many others.

All of that is wrong

Capping is a perfectly acceptable method

Capped timber does not hold any water, in fact it does not get any water to hold in the first place, and it continues to breathe as normal

 

[RonnyRaygun]

They wooden baods should be removed. Capping is a bodge.

The wooden boards will hold mositure and will rot beneath the upvc is one reason why, there are no doubt many others.

All of that is wrong

Capping is a perfectly acceptable method.

Capped timber does not hold any water, in fact it does not get any water to hold in the first place, and it continues to breathe as normal

I don't know who's right or who's wrong as far as whether or not it's a bodge...

What I do know is that complete removal of the existing boards is a lot more work and therefore a lot more costly than over cladding.

I did mine a few years ago, and was soon regretting it!

 

[masona]

Cut out any rotted timber then treatment, you will get a solid straight fixing onto the old fascia boards, You can always tell when the old fascia is removed, the upvc fascia got rippled effect

If the gutter is in the wrong poistion because of the new fascia boards then fit the roof underlay support tray

 

[RonnyRaygun]

Cut out any rotted timber then treatment, you will get a solid straight fixing onto the old fascia boards, You can always tell when the old fascia is removed, the upvc fascia got rippled effect

When I did mine I used 18mm upvc boards, designed to go straight onto the rafters. They look fine with no ripples. I can imagine if using the 9mm boards designed for overcladding it would look a right dog's dick!

 

[^woody^]

Even if building from new, it is required that a timber base board is fitted before capping in plastic. So I can't understand why it should be deemed a bodge

 

[masona]

Cut out any rotted timber then treatment, you will get a solid straight fixing onto the old fascia boards, You can always tell when the old fascia is removed, the upvc fascia got rippled effect

When I did mine I used 18mm upvc boards, designed to go straight onto the rafters. They look fine with no ripples. I can imagine if using the 9mm boards designed for overcladding it would look a right dog's dick!

Normally you will get away with 18mm thickness but depending on the distance of roof trusses

 

[mointainwalker]

quote]Capping is a perfectly acceptable method

Capped timber does not hold any water, in fact it does not get any water to hold in the first place, and it continues to breathe as normal

[/quote]Really can't understand this comment from woody.

The capping plastic is going straight onto the outer face of existing boards. Since this face is covered, how can it continue to breathe normally ? That apart, surface tension between the two surfaces will trap moisture present.

 

[masona]

There's no water to start with and there will be ventilation on the other side of the timber fascia boards via the soffit vents

 

[^woody^]

Really can't understand this comment from woody.

The capping plastic is going straight onto the outer face of existing boards. Since this face is covered, how can it continue to breathe normally ? That apart, surface tension between the two surfaces will trap moisture present.

Because there is air behind. Its not like sealing sardines in a tin

 

[jeds]

Sometimes replacement is necessary if fascias have deteriorated beyond a certain point but that's rare and the huge majority of plastic fascia work is capping.