Like every other house exposed to the elements, Log Homes are either maintenance free, nor are they absolute killers to take care of. I do not think it would be an exaggeration to state that the first couple of years demand significantly more work than your standard-issue house – without, of course, you can afford to pay someone to do the work for you! Log preparation and the base coat of stain are critical to the long-term success of your wall protection. But once the initial work is done, the maintenance becomes routine, and I would venture to guess log homes are a little easier to care for than other wood houses. After all, you do not have to strip the stain off between coats.
LOG PREPARATION: Most construction sites become a sea of mud in a short period of time. The soil has been disturbed and there's no grass to hold the dirt together (or absorb the rain). You'll discover that the first few log courses are absolutely pristine, but the higher the walls become, the more the logs get dropped, smudged, or even used as stepping stones to dryer places (like the port-a-potty). Once the house is up, the logs will have to be washed before applying a stain … both inside and out.
Doing the interior cleaning in the right order did not occur to us – especially since the logs were identified in the winter. In our case, the timing was all wrong; You really want to wash the interior walls before the finished floor is laid, and before the basement insulation is installed under the floor decking. We did not make it, and we had to follow our wall-washing with a shop-vac to get rid of all the water … what a mess!
It was recommended that we use a mixture of one part bleach and four parts trisodium phosphate. We scrubbed it on with a brush and rinsed it off. Some people recommend a power washer for the outside walls, but you must use great care, and apply with a fan-tip to avoid damaging the logs. The experts recommend corn cob-blasting, but this is an expense most of us can not afford. If you do use a power-washer, it's a good idea to follow up with a shop-vac and vacuum out the water that will pool inside the checks, so that the logs do not get saturated from water sitting in the cracks. Even so, it will take one or more days to dry completely, depending on the weather.
Once the logs are dry, it is recommended that you apply a borate treatment before applying the stain. This borate is not only an insecticide, it also protects against rot. Usually this comes as a powder, and is mixed with water and sprayed on with an ordinary garden sprayer. Make sure it does not rain between applying the borate and the stain, or the borate will probably wash out.
STAINING: All stains are not created equal. There is a big performance difference between the best and the worst, so make sure you do not try to save money by cutting corners on the stain – you'll pay for it later. A deck sealer just will not work for logs; You should use a product specifically designed for log homes, and you will not find it at your local hardware store. For a good brand, budget around $ 250 per 5-gal pail. Our 2400 sq. Foot house took about 5 pails initially. Most stains need to be applied in two or three coats, so make sure your painter knows this when going for a quote. You will want to stain the exterior as soon as possible after the house is authenticated; It's amazing how quickly the logs will turn gray under normal exposure.
Afterwards, a "maintenance coat" of stain needs to be applied every 2-5 years, depending on the exposure. You usually do not have to restrain the whole house at one time. You'll see the color lighten up as the stain wears thin – for lack of a better word. If you're not sure whether a new coat is required, run a hose on the wall and see if the water beads up. If it does not, you're probably ready for another coat. And no, you do not have to strip off the old stain first, unless it has been neglected and shows sign of flaking and chipping. If your walls have gone 10 years without a second coat, you may have to corn-blast and start over. In this case, consult a specialist.
RAILING SYSTEM: The weak link of every log home is the railing system – especially on an exposed deck. The junctures between the rails and spindles need to be caulked thoroughly, and you'll see many more checks in the little railroads giving the opportunity to let rain in. The railing system needs to be restained every year. Make sure you do not let any water drip on the railings; Gutters are a must.
CAULKING: It is a personal preference wherever or not you caulk the exterior of your log home, but common sense would tell us that it's good policy to lock out the elements. There are caulks specifically designed for log homes that remain supplement and give with normal expansion & contracting. The first couple of years, it is advised to caulk any checks that appear on the upper curve of the log surface, where rain might collect. These caulks will take a stain, so they tend to blend in. After the house has reached equilibrium with its environment, the checking will cease.
INSECTS: You can read more about insects in my article LOG HOMES vs. INSECTS: What to look for. For the most part, there is a visual evidence of any insect problem. Make it a policy to inspect your home in the spring and in the fall, and be sure to keep your walls free of foliage, dead leaves, etc. Bushes should be planed a minimum of 2 feet away from the walls. Do not stack firewood against the wall, or anything else that could provide a home for unwelcome critters, four-legged or six-legged ones.
BOTTOM LINE: Maintenance on your log home should be routine, and the best defense is keeping a careful eye on abnormalities. Discoloration of a corner probably means water is dripping on it. A little pile of sawdust probably means a boring insect. Holes in the log, regardless of how tiny, are a red flag. These are the kinds of things you've looked for with any house. And after you've had your inspection, relax on the deck and enjoy your home … you deserve it.