Ever wonder how much your attic entrance costs you each month in your cooling and heating bills.
How to seal an attic opening.
From masonry chimneys to any combustible material including insulation.
Sealing the attic hatch or door.
The large vent opening allows the heat to rise and.
They also give you an easy area to add hook fasteners if needed.
Finish up by sealing the access hatch with self sticking weather stripping.
Install a gasket around attic access openings to air seal between the opening and the panel covering.
If your hatch rests directly on the moldings add 2 1 2 inch wide stops around the opening.
If the attic hatch rests on the molding you should add 2 1 2 inch stops around the entire opening.
Because the pipe gets hot building codes require 1 in.
Of clearance from class b flues 2 in.
Insulate the cover with rigid foam that is glued in place or batt insulation that is mechanically fastened e g with wires and screws.
Air seal attic access panels and drop down stairs to minimize air leakage.
The opening around a furnace or water heater flue is a major source of warm air into the attic photo 5.
We are going to show you step by step in less than 2 and 1.