It creates a waterproof moisture proof and airtight barrier with no additional sealing required.
How to seal steel roof.
Take care the first piece is aligned precisely perpendicular square to the edge.
Lay 3 inch wide butyl tape over all vertical metal.
In other words it s put on last the cap to the job.
6 steps guaranteed to fix your leaking roof.
Place corner pieces where panels will meet bends at the edge of the roofing.
Before you begin you re going to need the right tools to help you with the job.
Remove the screws and replace them dealing with gaps.
Various size vents will come with recommendations regarding spacing and placement based on the size of the vents and the expanse of the roof.
Apply a 1 4 inch wide bead of caulk over the seam where the two panels overlap.
Prepare the roof area.
Lay 6 inch wide butyl tape over all horizontally lapping end seams.
Use your neoprene washer head screws to secure the metal to the sheathing.
Use 1 1 4 inch nails to cover the outline of the roof with strips of metal eave flashing also called edging.
If there are gutters installed on the eaves the eave flashing should be installed to overhang the lip of the gutter by about 1 2 inch.
Locate the source of the leaks.
Work your way across the entire roof to apply caulk to all remaining seams to seal them.
The products that are easiest to apply and most effective for galvanized steel aluminum and tin alloy roofs alike are acrylic direct to metal coatings.
A ridge cap is normally installed only after all metal roof panels and any other trim are in place.
Sweep the metal roofing sheets of all dirt and debris with a push broom.
Space the screws about 12 in 30 cm apart down the entire piece of metal.
Insert a tube of butyl caulking into a caulk gun and snip the end off using sharp scissors.
Use a marker or a chalk line to mark the spot on the roof surface where the vent will be placed.
Take your first sheet of metal and place it on the roof so that it overhangs the edge at least 3 4 in 1 9 cm.
Paint the roof with metal roofing paint.
Position the tape with the release backing on the.
This will involve determining the placement of the vents.
Here is a list.