How To Seal Siding From Water

Using a standard sized roller instead of a short roller speeds the process of applying the sealer.

How to seal siding from water. Since water runs downward unless it s being driven by strong winds the standard method for creating water resistant vinyl cladding is to start at the bottom and work up. Stack your new siding on top of some scrap wood on a level place in the yard. Lp recommends applying primer the foundation of the house before painting the siding to prevent moisture from wicking into the siding. Butt the siding next to each other so you can cover more than one piece of siding at a time with the sealer.

If you prefer to caulk before painting you should still paint the cut ends first. Lay the siding out on sawhorses or on a horizontal surface to make applying the sealer easier. After the paint dries apply caulk and then paint the rest of the siding. Cover it with a tarp to keep it from sustaining sun or water.

Inspect the area above the leak including both indoors and out. Use a caulking gun to apply a continuous bead of silicone sealant along the vertical seams between the vinyl j channels and the exterior window casings. Set up your saw horses about 6 feet apart in a shady area.