Proper Insulation For Bathroom Vent Pipe In Attic

You may need to pick up the duct insulation at the home center if the duct is not insulated at all.

Proper insulation for bathroom vent pipe in attic.

If the duct is insulated properly the problem is most likely solved. The first step is to head to the attic. They will have to be transitioned from 3 to 4 exhaust pipe. Use zip ties or aluminum tape to fasten the insulation.

Open the insulation piece at the slit and slide it over the pipe. Most bath vents for homes are 3. If you see that your duct isn t insulated at all pick up duct insulation at the home center. For corner joints that need to be insulated cut a simulated miter joint by cutting the insulation at a 45 degree angle.

So go to the attic and do that. Try aluminum tape or zip ties to fasten the insulation you may get a better result. Next make sure it is securely fastened on both ends of the pipe. Condensation can be a problem in an uninsulated attic so the homeowners trades resource center recommends installing rigid pipe with a minimum slope of 1 8 inch per foot toward the vent outlet to keep water away from the fan.

You may find that the insulation simply needs to be refastened. In some localities the building department may require the use of r 3 to r 8 fiberglass pipe insulation to control condensation and even when it isn t required it s a good idea to use it especially if the vent opening is likely to ice up during the winter. I recommend replacing the vent pipe with insulated vent pipe. But homeowners sometimes overlook the importance of insulating other appliances that use ducts such as kitchen and bathroom exhaust mechanisms.

In un conditioned space such as an attic where otherwise your fan duct will be exposed to cold attic air in winter use insulated solid metal ducting or insulated flex duct. Insulate the bathroom exhaust vent fan ducts. This will allow you to slip the insulation over the pipe corner easily. Continue this process over the entire length of piping in your attic.

Next make sure you have one of the new roof exhaust vents on the roof and properly sealed.