Seal Around B Vent Attic

Use a pocketknife to scrape rough edges and sharp points from upper end of plastic vent pipe.

Seal around b vent attic.

As a seattle home inspector i frequently find insulation tightly packed around b vent pipes that run through attics. When your roof was installed each vent pipe received a flexible boot to seal water around the round surface of the vent pipe. There are many possible parts of the roof potentially leaking but one of the most common ones is the area around the roof vent. Wear disposable gloves and eye protection.

Furnace flues require special sealing techniques the opening around a furnace or water heater flue or chimney can be a major source of warm air moving in the attic. Set your store to see local availability add to cart. Gibraltar building products 1 4 in. Let s have a quick look at this simple yet effect energy savings solution.

To properly seal around air vents apply caulk or expanding foam between the ducting and the sheetrock. The roof vent pipe is installed cut through the roof and around the pipe attached to the roof is surrounded with rubber boot as insulation for the gap between the pipe and roof. One static vent style is the turbine vent which uses wind to power its enclosed fan all it takes is a light breeze to rotate the blades and suck heat out of the attic view example on the home. Steps for fixing a leaking rooftop vent pipe.

Use the knife blade to scrape the pipe clean and smooth. These boots vary in quality flexibility and longevity. Aluminum base vent pipe flashing with adjustable rubber collar in black model 81840 15 97 15 97. Leak stopper rubber flexx 10 oz.

Next apply weather stripping around the underside of the vent cover. Seal openings around plumbing vents and electrical wires with expanding foam photos 8 and 9. Vent pipe leaks during heavy rain can occur if you have cracks in your vent pipe boot or flashing. Because the pipe gets hot building codes usually require 1 inch of clearance from metal flues 2 inches from masonry chimneys to any combustible material including insulation.

B vent pipes are used to vent combustion by products from gas burning appliances such as furnaces and water heaters many builders seem to think that because materials such as rockwool insulation are used as fire stopping that it should be good to go right up against the hot pipes. Cut away the old caulk from around the vent pipe. The goal is to prevent conditioned air from escaping or unconditioned air from entering the thermal envelope. Seal around electrical boxes with caulk photo 9.

This stuff is super sticky and almost impossible to get off your clothes and skin.