Household paint tips: preventing blisters

Having blisters pop up in the paint on the outside of your house is yet another common problem you can be faced with. Fortunately, you can take steps to prevent the paint from blistering and coming up from the surface ever again.

Blistering is most often caused by some type of moisture getting trapped underneath the paint. You can kind of determine the cause of the problem by breaking open a blister. If you see the bare surface, then you have a moisture problem with your house. If, however, you see paint, then the blisters are caused by moisture that was actually trapped in between the layers of paint. It is then possible that when the house was being painted, it was painted in the direct sunlight. The heat of the sun probably caused the top paint to dry too fast. That means that underneath, the still - wet paint became a vapor. A rise in the air temperature was probably caused by the heat of the sun. This change in temperature caused a similar change in pressure. The pressure then caused the paint to blister. Blistering happens more often with oil - based paint because it's thicker. It also happens more often with dark house colors because the color absorbs the heat of the sun.

Moisture problems around the exterior of your house can be caused by a variety of other reasons. In order to determine what is causing the paint blistering on your house, you will need to perform an inspection. Check around the windows, the doors, and the trim around the house. Look for missing or shrunk caulking that's letting moisture in behind the wall. Also look for leaks in the roofs, clogged - up gutters and downspouts, and in your basement.

Once you have determined the causes of the moisture in your home, you can start repairing the problems. Remove and re-caulk any areas that need it around the exterior of your house. Replace missing roof shingles or otherwise fix the roofs so no more water can leak in that way. Clean out the gutters and the downspouts and install guards over the gutters. These guards are perforated, and they are made of hard plastic so they can't break easily or rust at all. Once installed over your gutters, the perforations allow rain water or melted snow to drain through. But, they stop leaves, tree limbs, nuts, and other debris from getting into your gutters and downspouts anymore.

If you can't repair your leaky basement at this time, then one or two dehumidifiers placed there can at least help to eliminate the moisture problem. Installing exhaust fans in the bathrooms and attic can also help alleviate excessive moisture.

When you are painting the exterior of your house, paint the north side in the early morning. Then, paint the east side in the late morning. Paint the south side of your house in the afternoon, and finally, west side should be painted late in the afternoon. Following this rough schedule will reduce the possibility of your paint blistering because none of the exterior will be painted in the direct sunlight.
To fix the blistered spots in the paint on your house, you will need to scrape the blisters off. If the bare spots are very noticeable, you will need to sand them down flush with a fine grade of sandpaper. You will then need to use a good - quality primer to undercoat the bare areas. Follow the manufacturer's directions on the container in order to achieve the best results. However, it would be a good idea to let the primer dry thoroughly for a day or two. Then, follow that with a couple coats of good, quality house paint.