Is Butyl Tape Needed When Installing MaxFan Roof Vent

Updated 02/19/2020 | Published 10/27/2018

Products Featured in This Question

MaxxFan Roof Vent w/ 12V Fan - Manual Lift - 4 Speed - White

(248)

$191.82

Roof Vent Installation Kit - Sealant, Butyl Tape, Screws - White

(355)

$63.15

Question:

Do you need Butle tape for install or just the sealant?

asked by: Marcus C

Expert Reply:

When installing the MaxxFan Roof Vent # MA00A04301K that you referenced you will want to use butyl tape on the vent edges in addition to the sealant that you will apply around the unit to cover up bolt holes and any other areas that might lead to a leak. I have attached a sample vent installation on a different model vent just so you can get a better idea of the process.

We do have the Roof Vent Installation Kit # 344270KITW available that includes a 10.1 oz bottle of sealant, a 60 foot roll of butyl tape, and the required hardware.

expert reply by: Chris R

Eric

2/17/2020

Yeah, I forgot to use the dang Butyl tape. So, i have an vent adapter which is adhered to the van with 3M 5200 sealant. Then the fan flange is on top this is where i should have used the Butyle Tape. I then sealed it off with Decor Lap Sealant. Do i need to scrape this stuff off and start all over? haha

Jacob H.

2/18/2020

We highly recommend using Butyl tape BUT it is not the end of the world if you forgot it. It just helps to give you that extra seal for any water that might try to get in. If you've got a good layer of sealant around the perimeter and covering the screw heads then you should be fine. I would still do your normal checks after a heavy rain or snow to make sure you've got a good seal.

Eric

2/18/2020

Awesome thank you. I feel like i can breathe a little bit now.