Rain tests out the new stain job on the wooden wheelchair ramp

Rainwater beads up nicely on this freshly stained wood.

Nothing beats a trial by fire.  Or, in this case, rain.  We thought we did a good job of staining this wooden wheelchair ramp, but a nice little rainstorm early this morning really put it to the test.  The water beaded up and ran off just like it should. 

Even these handrails repelled water well.

We inspected the whole job and found that even the dryest and most weathered wood took the stain well and is repelling water as it now should.  It doesn't rain often in the desert, but when it does, it still does damage to wooden structures so this was worth doing.

Why stain your wooden hardscape? This picture tells the tale.

We had some stain left over after finishing the ramp (better too much material than not enough), so we stained a few other wooden hardscape objects as well.  It makes them all match and they all needed protection just as badly as the ramp did.  The puddles on this raised garden bed tell the tale of why staining wood outdoors is worthwhile. 

But how does water repellant wood stain work? I mean, it's liquid itself right? It soaks into the wood, especially this weathered wood, really well.  It didn't form a plastic like coating on the surface of the wood. Other than being a little darker, it looks and feels the same as before.  But now the rain water isn't soaking in.  I did some research.

The first thing I found out was that the stain we chose contains linseed oil. The oil fills the pores in the wood so that water cannot enter them.  It, like all oils, is naturally water repellant.  Everything is made from atoms which are incredibly tiny, electrically charged particles made up of negative electrons, positive protons and neutral neutrons and those atoms are combined to form molecules.  Some molecules are fundamentally stable enough to be considered elements, such as the oxygen and hydrogen that make up water. The hydrogen bonds that hold water molecules together are such that they leave some electrons still free to attract to other positively charged molecules, such as those that make up cotton fibers (which is why cotton clothes soak up water like a sponge).

Oil on the other hand, is made of chains of molecules that are bound together in ways that there aren't nearly as many electrons free to bond with other things, making a liquid oil nearly neutral in charge, thus the negatively charged water isn't attracted to it.  It get's quite complex, but that's about the most simple way to explain it. 

A great picture of the flax plant and its products by Handwerker on Wikimedia Commons.com

Water molecules. Note the positive charge of the hydrogen (H) is attracted to the negative charge of the oxygen (O)

A simple oil molecule. Hydrogen (H) electrons have filled all the available bonds with protons in the carbon (C) atoms, thus no space for the available electrons on the oxygen atoms of water to be attracted.

The stain we used also has what they call WaterGuard water repellants, which are trademarked and not disclosed, but are likely to be man-made polymers that are a lot like natural oils and that enhance the properties of the linseed oil. 


In addition to the raised bed, we also stained this wooden fence protecting a little patio area.

Water is running off this wooden fence now.

Stained this shade awning for the water system

And this shade awning.  Shade awnings like this are essential for protecting hoses, pipes, etc. of water systems for homes in the desert. Otherwise, the UV light from the sun will weaken the rubber and plastic they are made from. The awning also reduces the amount that the water gets heated during the summer so that water won't be so warm when it comes from the tap in the sinks.

Staining wood isn't terribly fun as it's difficult to keep the stain from getting on places where you don't want it and it's a sticky mess to get off your hands (rubbing alcohol on an old rag works about as well as anything), but it is important for having a sustainable landscape.  Being sustainable and environmentally friendly includes preventing materials in the landscape from becomming so damaged that they have to be thrown away and replaced.  By protecting these wooden structures, we're avoiding adding damaged wood to the landfill (or even the effort, time and money involved in getting it recycled before its useful life is truly over) and avoiding having to contribute to the demand for new lumber (and all the enviromental costs involved there), at least for the time being.  

Saving a wooden wheelchair ramp from an early demise.

This wooden wheelchair ramp is only about 6 years old.

Wood is a great mateial to build things with and has been since the dawn of human civilization.  It's one of the lightest yet strongest materials to work with; most flexible in terms of what you can build with it; easiest to work with without expensive tools and one of the most pleasing to the eye in a landscape.  However, it does have it's downside: it does'nt last as long as some other materials do, especially if it is not properly protected. 

This wooden wheelchair ramp is only about 6 or 7 years old, yet it looks much older.  It is still strucurally sound for the most part, but is showing signs of beginning to fall apart already. 

Wood on this handrail is seriously warped & is coming loose.

The wood was stained back when it was built, but they must have used a very low quality stain that lacked good UV and water protection.  In places, it is as grey as an old barn. Worse yet, it is really drying out in our hot, dry climate and is starting to splinter apart.  The handrail above will be unsafe to use soon if something isn't done. 

Wood rot on this siding.

The lower sides of the ramp are covered with wooden siding which is working well for the most part, but in the places where they piled dirt and crushed rock against it, it is starting to rot.  We dug the rocks back from it and will keep them away.  We don't get a lot of rain in Las Vegas, but enough to cause wood rot if the wood isn't allowed to dry out fast enough. 

Some sort of borer larva, possibly Flathead Borers, have been munching on this post.

This post shows signs of some species of wood borers, maybe Flatheads, tunneling in it.  It is still sound so far, but will have to be replaced if the damage gets any worse. We'll be keeping an eye on it now that we know about it.  Haven't seen any signs of damage in the other posts yet. 

We highly recommend looking over all of your wood structures on your property for damage like this.

We dug down as far as we could around posts to get them protected too.

A good quality stain with UV & water protection

We decided to start with a well applied coat of good quality stain first and see if that is enough to deal with the drying wood and hopefully, even retard further borer damage.  We don't endorse any products, so we won't show the brand, but the things to look for are ultraviolet light (UV) protection, water resistance and a moderate price.  Like many things, you get what you pay for and the really cheap stain isn't truly worth your time to use as it doesn't last. 

This project was done in the autumn in Octorber as it's a great time of year in the Desert Southwest to do outdoor hardscape projects.  Cooler weather makes it more pleasant to do physical work like this and the stain will cure better when it is neither too hot nor too cold. 

Before

 

After

Not only is the wood better protected from our harsh climate, it looks much better too.