Flashing Under Aluminum Siding

Seal small cracks and gaps in your siding under 1 4 inch wide using an acrylic latex caulk.

Flashing under aluminum siding.

Posted march 4 2017 filed under roof installation roof repair maintenance. Wall or siding connection to foundation top porch floors slabs. Where the step flashing terminates along a sidewall is a common trouble spot for moisture problems. Step flashing is used to provide a water tight connection where roofing adjoins a vertical juncture.

Galvanized sheet metal bent at a 90 degree angle i e. Slip flashing under siding. It is used to protect the horizontal joints between sheets of siding from water infiltration. In areas where snow may build up add a wide band of peel and stick membrane over the step flashing but under the sheathing wrap as shown.

If the sidewall is stucco or solid wood like ours and you can t open it to get flashing behind it continue the step flashing to the peak of the roof then cover the step flashing with cap flashing. If the shingle already has flashing on it the kickout flashing has to slip beneath it and you ll have to loosen or remove siding to do this. Step flashing is used where a roof meets a. This aritcle describes the cause repair and prevention of leaks rot damage at a wood framed wall that was not properly flashed and sealed at the wall bottom.

The large leg of the metal goes against the wall leaving the seat and face covering the top edge of the siding. Simply apply this inexpensive filler into the cracks to seal. For more on extruded aluminum flashing options go to http. This flashing is typically field fabricated from a sheet of 26 ga.

J channel will also work over the bottom cut using 11 gauge aluminum nails. Flashing materials choices installation details specifications. Paint works well over it. This is messier than acrylic latex but effective.

This has proven problematic over time as caulking the joint results in unsightly surface appearances due to the different textures as well as resulted. Keep water out of your home and running down the roof where it belongs with appropriate use of step flashing. Then slip flashing behind the siding covering the top edge of the ledger. Bent into an l shape.

The best solution is a preformed or custom bent kick out flashing to divert the water away from the siding. A common problem with cement board siding products and some other types of horizontal lap siding is that older installation guidelines called for caulking the joint instead of flashing the joint. Galvanized steel z flashing is made from 28 gauge galvanized galvanized steel z flashing is made from 28 gauge galvanized steel. Snap a chalk line cut out the siding and tack up the ledger board.

How to install step flashing under siding. Step 7 seal larger gaps up to 1 2 inch wide with polyurethane caulk.