Maintaining Antique Furniture

 

QUESTION: I recently inherited a number of pieces of antique furniture from my grandmother. They range from just under 100 years old to around 200. She loved nice things and was always on the lookout for interesting pieces. Unfortunately, as she got older, she was unable to care for them as well as she had in the past. I’m new to antiques and have no idea what to do to care for these pieces. Can you help me?

ANSWER: You’re very lucky that she thought that much of you to leave you her prized pieces. Over time, antique furniture accumulates dirt and grime. Even if she dusted it often, doing so grinds the dirt in, believe it or not. So the first thing you need to do is clean your pieces.

Cleaning is a simple process but you must be careful not to hurt the finishes. One of the best products to use to clean antique furniture is Murphy’s Oil Soap which comes in a concentrated liquid and also in a spray bottle. The best material to use for cleaning is an old washcloth with a bit of nap left on it. If you’re using the concentrate, mix with water following the directions on the bottle. Dip the washcloth in the mixture and get it nice and soaked, then wring it out as much as you can. If you’re using the spray, apply some onto a wet, wrung out washcloth. Clean a small section of a piece at a time, drying immediately with an old towel. You’ll have to rinse the washcloth often as it will pick up a lot of dirt. When you’ve washed the entire piece, let it dry for at least 24 hours. You’ll notice that your pieces are beginning to look a lot better already.

But cleaning is only the beginning. After a piece is thoroughly dry, you’ll need to apply a protective coating. 

The most common finishes found on antique furniture are waxes, oils, shellacs, and varnishes. Not only do these finishes bring out the beauty of the wood's grain and color, but they also protect the wood from moisture and heat changes that can cause shrinking, swelling, crazing, and cracking. Finishes seal the wood pores against dirt and grime, too.

But in order for a finish to protect the wood, the finish itself must be protected. This can be done by polishing the finish with either a wax or an oil.

You can find waxes in liquid, aerosol spray, and paste forms in hardware and home supply stores. Look for products that contain carnauba wax, a natural substance from a palm tree native to Brazil, that’s especially durable and produces a glossy shine when rubbed vigorously. Minwax is one of the best on the market. 

Another reliable and popular polish is beeswax, which has been available for many years. You’ll find a variety of paste and liquid polishes containing beeswax in hardware and home supply stores. 

Apply either type of wax with an old athletic sock. Rub it in thoroughly and wait at least 30 minutes before buffing it with #0000 steel wool. Don’t worry, this grade is as soft as fabric. Wait 24 hours and apply a second coat. But this time, buff it with an old towel.

Oils such as tung, linseed, and lemon oil have been used for centuries to preserve and polish furniture finishes. They're often mixed with absorption promoters, so they actually sink into the wood pores rather than remaining on top as waxes do. Oils leave a lustrous shine that’s softer than a glossy wax shine, and they provide good protection against moisture. However, they tend to darken the wood slightly over time. And as with applying wax, use a piece of old athletic sock to apply the oil. Since you'll need to give your furniture a second coat of oil in most cases, place the cloth you used in a plastic bag and then in the freezer. When you're ready to apply an additional coat, take it out 30 minutes before you plan to begin so that it can thaw.

Regardless of whether you choose to use a wax or oil, always use the same type that has been used previously on a piece of furniture. Finish surfaces that are accustomed to one type of polish won't accept another type. For example, an oil applied to a finish that had been previously waxed will remain on the wood surface and won't soak in.

If you don't know what type of polisher has been used on a piece—apply a small amount of an wax or oil to an inconspicuous spot on the piece. The wood should accept one of them and that is the one you should use.

How often you need to clean and polish your antique furniture will depend on the kind of heating and cooling system in your home, its geographical location, how you use your antique pieces, and the type of cleaner/polisher you're using.

Avoid using spray oils or dusting helpers like Pledge on your antique furniture. The oil in them will only build up on the piece, attracting more dust and grime. Generally, you’ll need to reapply a wax or oil every six months or at least once a year. A light dusting in between applications will keep your pieces looking good.

Besides regular dusting and waxing or oiling, you also need to provide the proper environment, paying close attention to heat, humidity, and light. 

It’s important not to keep your rooms too warm. Extreme fluctuations can harm antique furniture, loosening joints and veneers. During the colder months, depending on your geographical location, keep pieces away from radiators, warm air vents, and fireplaces. Too much heat can rob the wood of vital moisture.

Keeping a relative humidity level at around 55 percent at 65 degrees F. is also important. Purchase one or more inexpensive digital barometers and place them in rooms with your antique furniture. 

Lastly, avoid placing antique furniture, especially older more valuable pieces in direct sunlight or artificial light, especially with today’s LED lightbulbs. Over-exposure to either is harmful.  

To read more articles on antiques, please visit the Antiques Articles section of my Web site.  And to stay up to the minute on antiques and collectibles, please join the over 30,000 readers by following my free online magazine, #TheAntiquesAlmanac. Learn more about "folk art" in the 2023 Winter Edition, online now. And to read daily posts about unique objects from the past and their histories, like the #Antiques and More Collection on Facebook.

Preservation vs. Conservation

QUESTION: I have several pieces of antique furniture that need some tender loving care, but I’m not sure how to go about it. Can you explain the difference between preservation and conservation? And can you give me some tips on how I can take care of my pieces?


ANSWER: Preservation involves keeping an object from destruction and seeing to it that it’s not irreversibly altered or changed. In conservation, on the other had, the goal is to preserve the maximum amount of the original material, in as unaltered a condition as possible.

Furniture conservation and restoration can be divided into two general areas—structure and finish. Structure generally relates to wood---solid, joined, and veneered. The finish of furniture can be painted or varnished.



Antiques restoration can be an arduous process if the goal is complete authenticity. This is particularly true for museum conservators. For them, authentic material is the actual original material of the object. For example, a chair with its original upholstery, even if it is faded and shredded, is authentic for the conservator and possesses historic value even though it may not be exhibitable. The same chair can be "restored" and looking as it did when new, with replacement fabric copied from the original weave and colors, and upholstered according to the known design of that particular piece of furniture.

Some pieces of furniture, especially those constructed of harder woods, such as walnut, mahogany, maple, oak, or cherry, may only need to have their surface finish preserved. In the case of furniture made of these woods, there may be enough of the original finish left to restore the piece rather than refinish it.

Before doing anything, study your piece. Is the finish pretty much intact? Does the piece have a nice patina? Is the piece more than 100 years old? If you answered yes to even one of these questions, then you should do your best to preserve the original finish of your piece.

The first step in preservation is cleaning. Furniture gets dirty, even grimy over time. Before you can apply a new finish, you need to get rid of all the accumulated dirt and grease that often make it difficult to tell what kind of wood the piece of furniture is made of. Grime can also hide the fine lines of inlay and marquetry. Believe it or not, using lemon oil, a popular furniture polish, can do more harm than good. Since its made of a light petroleum oil and some paraffin wax, the wood doesn’t absorb it. Instead, it acts as a surface dust catcher.

One of the best products for cleaning wood, especially furniture, is Murphy’s Oil Soap. Today, it’s also in a spray bottle, but in case you can’t find it that way, you can make your own cleaning solution by mixing a capful of Murphy’s in a spray bottle of water. For this, you can use any empty spray cleaner bottle, as long as you wash it out thoroughly first. Since water will loosen any glued joint, and also tends to raise the grain of the wood, you don’t’ want to use very much. An old washcloth will do quite well for cleaning.

Spray the Murphy’s on a damp washcloth and then rub it on the surface of the furniture. Rinse the cloth when it gets to dirty. Have a second wet, but wrung out, washcloth ready to wipe off the Murphy’s Oil solution, wringing the cloth nearly dry after every few wipes. You can also use a green scruby cloth, sold in Dollar Stores, if there’s hard to remove grime. A stiff-bristle brush will allow you to get the dirt out of carved and turned areas. The secret is to clean only a small area at a time–one leg of a chair, one part of a chest, and so on. After you clean an area, wipe it dry with an old face towel. Be sure to wash out all your cloths or use others as you progress, especially on a large piece of furniture. After you have finished cleaning your piece of furniture, give it a final wipe with a clean cotton rag and set it aside to dry for 24 hours.

All this cleaning may cause joints to loosen, so be sure to check the structural integrity of your piece before applying a new finish. If joints need to be tightened or reglued, do so before applying a new finish.

Now you’re ready to apply a new finish. You can either use plain tung oil or a product like Minwax® Water-Based WoodSheen® which is a water-soluble mixture of furniture finish and stain that comes in six colors. For a piece that’s got lots of scratches or marks, it’s best to choose a stain color that complements the wood’s original finish.

The final step is polishing the entire piece using a prepared wax like Minwax, which comes in light and dark varieties. Obviously, use the light for woods like oak or cherry and the dark for woods like walnut or mahogany. Apply the wax with a piece of soft cotton cloth like an old athletic sock and after 30 minutes, polish the surface with an old face towel. One coat should do it, but for tabletops, apply two coats of wax.

Rub off the first coat with 0000 steel wool, then apply the second and polish with the towel. The more coats of wax you apply, the more water resistant the top will become. A light polishing once or twice a year will keep your piece in great condition.

There are no short cuts or time savers to this entire process. The work can be slow and at times tedious, but the results are worth it.

To read more articles on antiques, please visit the Antiques Article section of my Web site.  And to stay up to the minute on antiques and collectibles, please join the other 24,000 readers by following my free online magazine, #TheAntiquesAlmanac. Learn more about antique clocks in the Fall 2019 Edition, "It's That Time Again," online now. And to read daily posts about unique objects from the past and their histories, like the #Antiques & More Collection on Facebook.