Condensation On Exterior Siding

Siding and coverings sealants and flashing or special paints are part of the first line of defense of the walls.

Condensation on exterior siding.

Exterior window condensation is not a reason to worry. No house wrap as they have now. Why is there moisture behind my siding. In fact in some instances the pressure difference can be great enough to blister and peel paint on exterior siding as moisture in the wood or masonry is drawn out.

But worn cracked siding material a bad paint job uv light from the sun exposed or poor caulking and rusted or ill installed flashing and moisture buildup can all damage your house. The most common areas on the exterior of the home to first notice a leak is through the soffits. For homes with vinyl siding many homeowners are under the false assumption that vinyl is waterproof. First of all every standard wood framed wall insulated with fiberglass batts is at risk for moisture accumulation in the sheathing during the winter.

Exterior condensation generally occurs in the summer months when exterior humidity levels are higher. The exterior of the house may indicate a moisture problem within. Also a sticky brownish resin down the exterior walls of the house may be an indication of condensation. Covered with vinyl 8 lap siding double 4 have not had sweating on exterior until this year.

This condition can often be corrected by inserting painters wedges between the siding boards. Exterior window condensation forms in the same way as roomside condensation when the temperature of the glass is cooled and comes into contact with that warm humid air. For vinyl siding this test can be performed non invasively with minimal interruption to the home s exterior. A large amount of water vapor creates considerable force.

The vapor pressure at any moisture content is equal to the sum of all individual vapor molecule pressures. Peeling paint is often due to the movement of moisture through siding or cladding products. An experienced contractor can also perform on a moisture test on most homes. This will allow moisture to escape from between the boards rather than through them.

Moisture damage in exterior walls exterior walls are very exposed to the elements and whatever their type they are prone to moisture problems. Commonly they are a combination of these factors. No rain in 7 days but most moisture is at point plywood and foam board meet. Looks like i need to redo.