Adding Flashing After Siding Is Installed

Apply a bead of caulk to the felt and set the window in the caulk.

Adding flashing after siding is installed. However in most instances step flashing should be installed behind siding. Loosen the siding left above the ledger so that you can slip flashing under the paper under 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. Step flashings are quite often improperly installed on the exterior of siding.

Install siding on the walls down to the flashing. In certain instances flashing may need to be installed on the exterior of siding. Run flashing behind the siding and over the ledger as should have been done in the first place. Next comes another layer of building wrap installed like the first layer.

Lift the bottom shingle and slip in the kickout flashing. Nail it to the sidewall or glue it if nailing isn t possible. Though it will take some dismantling and perhaps a replacement deck board or stick of siding following the recommended practices for installed ledger flashing based on your exterior cladding is the best approach. It is always recommended to install step flashing behind stucco dryvit wood panel lap siding vinyl siding cedar shingle siding etc.

In order to properly install new flashing you ll have to remove the shingles surrounding your old flashing and then re lay them after installation. Cut back the siding above the ledger in two places right at the top of the ledger and 1 above the level of the board that goes over the ledger. If the kick out and step flashing can t tuck behind the siding screw on cap flashing to cover it then caulk along the top. Slip in the flashing.

At the top tuck metal drip cap flashing under the siding and on top of the second layer of wrap. If you re just trying to buy a few years until a new deck can be built some tubes of high quality silicone caulk and whatever other tricks it takes to divert water to the face of the ledger can buy you some time. Leave a 1 4 inch gap between the step flashing and wood siding or cement board. Cover with cap flashing.

How to flash siding butt joints after the siding is installed. Install the trim just under the drip cap. Three tips for overlapping drip edge flashing. Nail j channel for vinyl or metal siding onto the flashing.

After installation you ll then re lay the shingles you removed to provide a comprehensive water tight solution. Typically flashing is installed using roofing nails and roofing cement. Overlap pieces at least a couple of inches shingle style with pieces higher up on the roof overlapping pieces lower down.