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Additional roof vent to eradicate condensation.

Discussion in 'Roofing and Guttering' started by amfisted, 21 Feb 2021.

  1. amfisted

    amfisted

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    Hi All

    I have a slight problem with condensation in the loft space of our 1970s bungalow. The condensation is forming on the felted underside of the slope.

    I've installed soffit vents and internal tile vents ( the plastic ones that insert between tiles from the inside) but in very cold weather there's still a small amount of condensation, so I reckon I need at least one additional external vent at a higher level.

    Could someone please post a link to the correct ridge/ roof tile vent for a Redland Stonewold roof in grey.

    Many thanks.
     
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  3. Bonni

    Bonni

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    Condensation is appearing because of moist air escaping into the loft from the rooms below. Water actually seeps through ceilings, hence why they sell plasterboards with a foil vapour film attached, to be used on ceilings to lofts. Drying clothes on radiators often adds to this problem. I suggest fitting a vapour barrier between the plasterboard and loft insulation and check the loft hatch is sealed.

    This chap explains -

     
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  4. amfisted

    amfisted

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    Thanks for that.

    Through the measures I've already taken the problem seemed to have been eradicated. However it reoccurred recently to a limited extent, probably coinciding with the very cold spell we had a couple of weeks ago. If it reoccurs I'll certainly consider the application of a vapour barrier, though taking up all the loft boarding to lay that barrier currently seems like a disproportionate response to what may be a rare event. I do fully accept the importance of ensuring that the loft access door seals properly, and I'll address that first.

    Meantime, I'd be grateful for any further information about roofing vents for a Stonewold slope.
     
  5. Old Salt

    Old Salt

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    Google
     
  6. amfisted

    amfisted

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    I did "Google" before coming here, but the only ones I found were universal vents, not specific to the Stonewold.

    Perhaps it would be easier to fit a vapour barrier after all. :rolleyes:
     
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  8. Bonni

    Bonni

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    Do you not have a local roofing supplier specialist in your neck of the woods? Our local supplier often makes air vents to suit the tiles/slate.

    https://www.building-supplies-onlin...ping&msclkid=6be6e9572b581f01c601896300c3477b
     
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  9. Old Salt

    Old Salt

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  10. amfisted

    amfisted

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    Many thanks to you both. It appears that I don't know how to use Google. :confused:
     
  11. Old Salt

    Old Salt

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  12. DIYnot Local

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