Rain Before House Siding

As long as the substrate is dry when the primer is applied rain but not a gully washer won t affect it too much 30 minutes after it s applied.

Rain before house siding.

After all even if it feels dry to the touch that doesn t mean that moisture isn t still captured within. After it rains we typically wait a couple of days to make sure that the siding is perfectly dry. Gutter leaks can do hidden damage when siding masks the problem. If it did you probably wouldn t need to pressure wash your home nearly so often.

How to stop rainwater from running behind house siding. After a rain you can start siding again as soon as the previously installed siding and the house wrap are dry. If you are using latex acrylic paint you need at least two hours of sun for exterior paint to dry before the rain comes. If heavy rain is forecast or several days of rain are coming in the next few days you will need about six hours of good sun to dry the paint thoroughly enough to not be affected.

Paint will dry to the touch in one hour or so depending on the heat of the day. Another factor is that eaves and soffits help keep rain from even hitting the house keeping the siding dry and ready for paint. Hardboard siding may also require a primer. That is because unlike power washing rain doesn t typically soak into the siding of a home allowing for painting shortly after it stops raining.

Oil based primer takes longer to dry but can withstand rain fairly soon. As a general rule use an alkyd primer and a latex topcoat when repainting. It s always best to work with dry materials. Rain will slow down the drying time and might affect the look but shouldn t hurt its bond with the substrate.

And if a board does get wet but is not sitting in moisture for an extended period of time you can simply let it dry out before installing. The glues used to make osb are water resistant because the manufacturers know that virtually no one can build a home that won t get wet before the roof and siding is applied. Houses i built got wet. This means that the siding of your house won t soak up rain water the way it soaks up water from the pressure wash.

If the uninstalled siding strips were left outside the boxes will now be soggy and the strips will be wet. Hardie plank joints butt joints james hardie siding is 12 feet long which means that siding on your longer walls will need to join together. Too much sun can be detrimental to a paint finish just as too much rain can be. Originally published november 29 2008 at 12 00 am.

If you re applying latex paint over a glossy paint play it safe and prime the entire house even if you ve sanded or treated the existing finish with a deglosser.