Vent Bathroom Exhaust Fan to Roof
Hi, I’m looking to install a bathroom fan in the top floor of my brownstone, no window and not accessible to exterior wall. Anyone have any suggestions on what type of cap/waterproofing methods to use if I wanted to do a 3 in vent hole in my flat roof? And where could i pick up…
Hi, I’m looking to install a bathroom fan in the top floor of my brownstone, no window and not accessible to exterior wall. Anyone have any suggestions on what type of cap/waterproofing methods to use if I wanted to do a 3 in vent hole in my flat roof? And where could i pick up the gear on a Saturday, Home Desperate?
Thanks.
ours vent out the back wall, so if you can negotiate it that seems like less risk for leaking
I’m big on DIY, but IMO it’s NOT a great idea to make a hole in your roof and waterproof it yourself–too many potential problems.
When I had the same work done in my top floor bathroom I had an electrician install and wire the fan and a roofer install a mushroom vent on the roof. The vent the roofer installed was considerably higher than the ones installed years earlier to vent the insulation–that might just be a coincidence, I’m not sure.
I had wanted the roofer to install the vent a day or so before the electrician came, but he was nice enough to insist on being there at the same time as the electrician, to avoid any possible problem.
Based on past experience with leaking in the vents for the insulation, I ran a bead of silicon caulking on the seam of the new mushroom vent (even though the roofer said it wasn’t needed). That 5 minutes of work was my only DIY contribution to this job