fantastik fan install/removal questions
I have a 2015 lance 915 with a fantastic fan,it has leaked on 2 different occasions.Just wondering if this is normal,no butyl tape was used and no screws around the flange on the original install,just...
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Method we use.
Remove old vent or fan, remove old butyl tape and caulking.
Clean area well with acetone (careful, it is hard on rubber roofs)
Set fan and butyl tape in the sun to warm up.
Drill holes about 6-8 inches apart all the way around fan flange if it doesn't have any. May want to do a dry fitting first to make sure you aren't putting holes over a cutout section of roof- sometimes the holes are slightly different sizes.
Run strip of butyl tape on the bottom of the fan's flange and let it sit in sun with tape side up until it is soft.
Install fan in hole, use smaller bit to predrill holes in roof through the holes in the flange. Helps prevent tearing the rubber roofing.
Install and snug up all the screws. As it warms up, you can work your way around the flange and HAND TIGHTEN the screws just a little bit at a time to squeeze the butyl tape tight and squeezes out until the edge of the flange makes good contact with the roof.
Use plastic edger to remove excess butyl tape.
Use Dicor self-leveling or Eternabond to seal the edges and cover each screw head (EB Tape would be contiguous pieces to cover it all)
Key things:
1. Butyl tape must be WARM to squeeze it
2. Do not strip any screws, you'll regret it later if they back out
3. Seal edges AND screw heads/holes with caulking
Hope this helps!
Remove old vent or fan, remove old butyl tape and caulking.
Clean area well with acetone (careful, it is hard on rubber roofs)
Set fan and butyl tape in the sun to warm up.
Drill holes about 6-8 inches apart all the way around fan flange if it doesn't have any. May want to do a dry fitting first to make sure you aren't putting holes over a cutout section of roof- sometimes the holes are slightly different sizes.
Run strip of butyl tape on the bottom of the fan's flange and let it sit in sun with tape side up until it is soft.
Install fan in hole, use smaller bit to predrill holes in roof through the holes in the flange. Helps prevent tearing the rubber roofing.
Install and snug up all the screws. As it warms up, you can work your way around the flange and HAND TIGHTEN the screws just a little bit at a time to squeeze the butyl tape tight and squeezes out until the edge of the flange makes good contact with the roof.
Use plastic edger to remove excess butyl tape.
Use Dicor self-leveling or Eternabond to seal the edges and cover each screw head (EB Tape would be contiguous pieces to cover it all)
Key things:
1. Butyl tape must be WARM to squeeze it
2. Do not strip any screws, you'll regret it later if they back out
3. Seal edges AND screw heads/holes with caulking
Hope this helps!
