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NinerBikes's avatar
NinerBikes
Explorer
Jul 26, 2014

Replacing external vent for cooktop fan.

What do you like to use for bonding /waterproofing when replacing a Heng external plastic cooktop vent? My flapper broke off somewhere on the highway, already ordered a new one and will be doing the coathanger wire and foil tape modification. 11 5/8" is the magic length to cut to, for future reference.
  • Trying to post more than one picture but having problems, may come thru in more than one post.
  • We replaced our entire vent and flapper, used butyl tape, that was what was underneath the original one too.
  • Itchey Feet wrote:
    Did this with the two vent fans that I have, took down the vent hood and put window screen (metal type) between the hood and the outside flapper. Have spent time in the mountains and found out that flies would enter this area when flapper was unlatched. "Cooking smells" -- at the same tile I changed out the hood vent fan with a muffin fan. Lots quieter. If interested, PM me for more details. I just used (paintable household calking as a sealant, it stays pliable and can be removed if need be later)


    I would be interested in how you installed a muffin fan in your stove vent. Ours sound like a fighter jet taking off. By muffin fan I assume you arevtalking about a computer fan?
    Thanks
  • Putty tape. You will probably find it under the vent when you take it off.
  • Did this with the two vent fans that I have, took down the vent hood and put window screen (metal type) between the hood and the outside flapper. Have spent time in the mountains and found out that flies would enter this area when flapper was unlatched. "Cooking smells" -- at the same tile I changed out the hood vent fan with a muffin fan. Lots quieter. If interested, PM me for more details. I just used (paintable household calking as a sealant, it stays pliable and can be removed if need be later)
  • westend wrote:
    When bonding something that has a flange onto an exterior surface (I have aluminum siding) and the flange is held in compression to the siding, I like to use self-stick weather stripping, followed by a sealant around the edge of the flange. Should I have to remove the accessory, later, it is relatively easy to do. The weather stripping makes a good seal and I've never had it fail when held under compression.


    What brand of material do you prefer for sealant, that is soft, pliable, and not permanent like silicone sealer for sinks and such. It needs to be removable with a reasonable amount of effort in the future, the plastic does not last indefinitely.
  • When bonding something that has a flange onto an exterior surface (I have aluminum siding) and the flange is held in compression to the siding, I like to use self-stick weather stripping, followed by a sealant around the edge of the flange. Should I have to remove the accessory, later, it is relatively easy to do. The weather stripping makes a good seal and I've never had it fail when held under compression.

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