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Here are before and after pics of our dutch doors. Still need to make new top doors as they are rotting as well. The old doors are from Woodstar, factory primed, 5 years old. They began rotting after about 6 months.
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These doors deteriorated most likely due to the use of cheap improper materials and poor craftsmanship. A lot of mass produced “inexpensive” wood products are made with a cheap type of fast growing “soft wood”. Even worse a lot of stuff is made with the same wood but scraps that are finger jointed together and made into dimensional lumber. If one looks closely they will be able to see the joints. They maybe very subtle when new but woods “moves” over time and they will become very visible. Especially if used for exterior. This stuff is garbage and should be avoided at all cost. When discussing and getting bids on a project make sure they are not quoting you using this garbage. The cost of labor is the same and the work will last a lot longer for a few dollars more. This may or may not have been used with these doors. But ones things for sure they were not made with weather resistant, pressure treated materials. If they were it was with the lowest grade known to man. The bottom most likely rotted out because the “faux” bottom trim board was a “water trap”. The rain/water “sits” on it allowing water to seep behind it and do its dirty work. The result is called “dry rotting” as seen in the top door and other faux trim boards. A bit of a misnomer being that it is caused by water. But it is caused by the water drying out constantly and “evaporating” with it the wood’s “structural elements”. This happens to a lot of outside trim boards when improperly used and or installed. Which is why one can punch a hole with a finger in what looks to be a “sound” and flat board. Paint being the only thing that is holding it together. The plywood rotted from the bottom up. Water splashing up off the bottom trim board didn’t help either. All of the framing should have been done with pressure treated material. I use deck boards, they are 4 quarter thick and rip/cut the rounded edge off. Meaning they are a full 1 inch think. Yes, your trim boards are called 1X6 but they only measure ¾ by 5 ½ now a days closer to 5 ¼. The “yard stick” keeps getting shorter for just about everything these days. 4 quarter (1 inch) and 5 quarter ( 1 ¼ inch) is stronger and “looks” appropriated. (tip, if one has to use ¾ material for base board trim putting a 10-15 degree bevel on the top adds to the visual look and makes it appear to be a proper 4 quarter trim board. The bevel is so slight that the top of the base board still looks flat for the most part)
Caulking would have helped extent their life also. But woods moves over time and breaks a poorly caulked joint. I would have added a couple of “water weep holes” to the back of the bottom board. I take my saw and add an extra blade to make the cut, saw kurf wider and set the dept at about an 1/8 and make a couple of vertical “cuts”, lines on the back of the bottom board so water can drain off the flat area. Though they become useless if filled with paint. The same that happened to storm windows when the weep hole is filled with paint or improper caulking. The sills rot and the storm windows can fog up.
Personally I am not a big fan of the look of “Dutch” doors. The generic name being split doors. The Dutch comes into play with the “faux” cross trim boards being added. IMO it is over used. But to each their own. In short if you want the Dutch door look make sure they are not “faux” like these. Properly made ones will last a lot longer but are fairly labor intensive and should be made with very good materials so be prepared to pay $$$$.
To avoid the chance of your doors ending up like Air horse #14 insist on having them made properly as I said above and ask what kind of material they will be using. Using T-1-11 will give you the “weep holes” without cutting the trim board. Our outside stall doors are made with 8 inch ¾ tongue and groove bead board framed with 4 quarter lumber. Though 2 by material works just fine also. The doors are over 20 years old and are just starting to get a “tired” look. When I redo them I will use bead board with deck boards or 2X8 tongue and groove the same that is used for stalls and or barn flooring that can be bought at a Pole barn supply. Our doors were “capped” with galvanized sheet metal. I found it to be a maintenance hassle coming loose from time and “horse abuse”. I use thin angle iron instead with the securing screws being counter sunk and screwed into solid wood not plywood. Using “liquid nails” on the bottom of the angle iron maybe good enough when screwed into plywood. The top and bottom doors were beveled so as to give and tighter seal when closed. I see no need for the extra detail that adds time and expense. Yes, in wind driven rain storms water can blow into the stall through the small gap but that doesn’t happen very often around here. It is a barn after all. The beveled top edge is extremely inviting to cribbers and chewers.
I would not use a contractor. Contractors generally don’t do the work themselves but find, contract someone to do it so you are paying 2 people. More depending on how big the contractor is. The last “contractor” I hired to do some “high end” trim work on our house was a joke and they came with good references. Which shows people are just used to being ripped off. Not their fault people shouldn’t have to know what I know to make sure they are being treated fairly. There was a day when people took pride in their work and their reputation. Far and few between these days. Anyway, I was quoted time a materials at $85 an hour with an estimated total cost of $25,000. The contractor came over several times and I went into great detail what I wanted done. They said they have “craftsmen” that they have employed for years. They showed up with the finger jointed crap instead of clear poplar. Instead of several “craftsmen” one guy and a half assed assistant that I was also charged $15 and hour who wasn’t worth minimum wage. As it turned out the guy was a decent handyman/carpenter who they just hired and were paying $30 an hour. I sent back the garbage wood and then had to work fairly closely with the guy. The whole reason I hired the “contractor’ and spent plenty of time going over details was to take me out of the equation so I could concentrate my time on my horse business. After spending about $15,000 I threw them off the job and withheld some money which they never came after me for. They are out of business now I am told. The “handyman” quite them also. I have used him since and have given his number to others who have been very pleased with his work.
A good “handyman/person/carpenter is worth their weight in gold and well worth going through what ever it takes to find one. When you do don’t be cheap, treat well and you will be happy ever after. Just like a good farrier, hay person, vet, etc.
Sorry, I digress, its my nature. Using the material you described, pole barn, simple project this should not cost more then $500. 8 hours @ $35 an hour, which is more then need for this, is $280 leaving $220 for materials which should be plenty for what you are having done. If not there should be room to move on the labor costs.