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Rangehood Roof Vent; How to prevent Heat Loss and Backdrafts ???

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  1. #1
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    Default Rangehood Roof Vent; How to prevent Heat Loss and Backdrafts ???

    I am fitting a new rangehood which will be ducted directly to the roof vent.

    Ideally the roof vent should prevent air movement from the kitchen through to the exterior except of course when the rangehood is turned on; likewise it should prevent backdrafts.

    Can anyone advise me where to obtain such a roof vent, especially to suit 150 mm ducting?

    I have found room extraction fans with shutters etc but nothing to suit a rangehhod that already has it's own fan and I have found wall and soffit vents with shutters but no roof vents. Its a flat roof and wall and soffit venting would be a very much 2nd rate option.

    Just using a traditional mushroom or similar vent effectively puts a 150 mm hole in the ceiling / roof and will lead to a massive heat loss in winter (well anytime really in Tassie).

    Cheers.

  2. #2
    Seasoned DIY droog's Avatar
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    These guys Fans | Exhaust Fans | Ventilation Fans | Intelligent Ventilation - Fantech have inline backdraft shutters.

    Regards Dave

  3. #3
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    Thanks Dave, I knew somebody here would know .
    Their SJK Smooth Flow Backdraft Damper seems to be exactly what I need and I note they have an agent in Hobart. I'll give them a call tomorrow.

  4. #4
    Cabinetmaker
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    check your rangehood, some of the quality units have these shutters built in [ i know the smeg ones do]
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  5. #5
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    Quote Originally Posted by Pitto View Post
    check your rangehood, some of the quality units have these shutters built in [ i know the smeg ones do]
    Regretfully my F & P model does not. It has provision for two butterfly type flaps in the flange immediately above the fan but the flaps are not included.
    Maybe I should have gone more up-market .
    I did think of building some but I have ore important jobs to finish

    The link Dave gave me was gold; they had what I needed in stock in Hobart and was very reasonably priced.

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