Posts Tagged ‘waterborne finish’
Finish technology, the great unknown
Thursday, June 10th, 2010
I was at my distributor today and overheard something amazing. A company owner who has been in business many years was asking for some product. Here’s how it goes,
Owner, “I want the lightest colored finish you can use on maple.”
Dist rep, “You need BonaSeal for the lightest look.”
Owner, “Can I put Glitsa Infinity on top?”
Dist rep, “Sure”
Owner, “I just want whatever is cheapest for this job.”
If these are the questions of a “veteran” and the operating principles, then it’s no wonder homeowners are lost when comparing estimates. Would this make you confident to know it was your floor?
Homeowners, here is the way to solve things. Look the contractor in the eye and say the following question, “If this were your house and you could use any product to make your floors most durable, then what finish would you use and why?”
I would love e-mails about any stories.
Tags: floor finish durability, Hardwood floor durability, hardwood refinishing, portland oregon hardwood contractor, waterborne finish
Posted in Hardwood floor Portland, Uncategorized, floor refinishing portland oregon | No Comments »
Apples to apples floor finish
Wednesday, April 7th, 2010
I do a number of estimates for my floor business and I am always perplexed by the lack of information other floor companies are providing for the homeowner. Let me bring about a few real world points for people in order to dispel the myths surrounding the “bidding” process.
1) Two coats versus three coats versus coverage rate
Honestly this is a six versus one half dozen comparison. Your average floor finish has a recommended coverage rate for application. Some finishes have an optimal application range of 300 square feet per gallon where others are at 500. This has a big impact on the “mil thickness” (durability) of the finish. Three thin coats will actually be less durable than a quality two finish coat job. Cheap contractors stretch finish thin when applying it. Three coats sounds like a better thing, but is only a repeat visit and more work for the contractor if the coverage is less than adequate.
2) Resins and solids content
This is a real hidden point of discussion for some floor companies, particularly low priced companies and large outfits. Waterborne finishes have a protective resin suspended in water that is the “thing” that provides durability. The chemical composition of this resin has a tremendous impact on durability. Cheap floor finishes have weak resins and are “watery” with coverage rates near 600-700 square feet per gallon. They are lower in solids (the resins that provides durability).
3) Two component versus one component waterbased finish
One component floor finishes have minimal scuff and scratch resistance. They rely simply on oxygen to link the finish resins. Two component finishes rely upon a chemical crosslinker to “matricize” the finish resins and form a really tough scuff resistant floor. In talking with several finish chemists during NWFA schools, I have found that two component finishes fare almost twice as well in taber abrasion tests that test durability. For a perspective single component finishes can be about $25-50 per gallon, where a quality two component waterborne ranges from $80-110 per gallon.
CHEAP ONE COMPONENT FLOOR FINISH
DURABLE TWO COMPONENT FLOOR FINISH
My Point!!!!
Ask your contractor about these points. Why? Because if they don’t have an answer they are NOT a professional. They are a “guy with a sander” who can multiply a square foot price and use a tape measure. Please make a fair comparison when evaluating floor refinishing estimates. Otherwise you will be taken for a ride by a snake oil salesman and have a worn out floor in two years.
Tags: floor finish durability, Hardwood floor durability, hardwood refinishing, low-VOC hardwood floor finish, waterborne finish, wood floor sanding
Posted in Hardwood floor refinish, floor refinishing portland oregon, hardwood floor finish, hardwood floor refinishing prices, waterbased finish, wear layer thickness | No Comments »
Real world waterbased finish
Sunday, April 4th, 2010
I get asked so often about finish durability. Honestly, my answer is always to explain the features of various finishes and suggest only the types of products I would use on my own home.
Two years ago in April 2010 I applied three finish coats of Glitsa HP two component waterbased finish to my floor (Matte sheen). Today while I was cleaning my floors using our suggested method and was really impressed with how they still look great. My children are two boys ages 4.5 and 2.5 (they’re wild and crazy) and they are my best testers along with my dog who is young and crazy. The photo below is pretty much the best proof I can give you for the real world performance of a finish. No hyped marketing behind this one, just real world for someone else to see if they are wondering about durability.
This isn’t that I am sold on only one particular finish, just that I have this product in my house on a daily basis and can personally vouch for how well it performs in durability.
Tags: floor finish durability, Hardwood floor durability, hardwood refinishing, low-VOC hardwood floor finish, Portland hardwood floor, waterborne finish
Posted in Hardwood floor durability, Hardwood floor refinish, floor refinishing portland oregon, hardwood floor finish, waterbased finish | No Comments »
The new face of low-VOC
Wednesday, February 3rd, 2010
Waterborne finishes run the gamut for durability. At our home we have two of the world’s greatest floor finish durability testers, boys ages 2 and 4 and a half. They lay credit to the fact that waterborne finish can be durable.
In the change of the market towards waterborne finish, California has set the standard at 275g/L VOC maximum. In response, on of our favorite finishes (Dura Seal X-terra) has recently been re-formulated to be in compliance. In addition to being a very durable waterborne, this finish performs flawlessly on the job. We love the look and workability of this finish. 
Tags: dustless refinishing, floor finish durability, waterborne finish, wood floor sanding
Posted in Hardwood floor refinish, floor refinishing portland oregon, hardwood floor finish | No Comments »
Hardwood finish and adhesion, the overlooked but critical factors
Tuesday, August 11th, 2009
The tremendous range of hardwood floor finishes available these days has become almost exhausting to keep pace with any more. In the previous blogs we have discussed wood floor finish options and pro and cons. This blog has less to do with actual chemistry and understanding mechanisms of adhesion.
There are pretty much two ways by which hardwood floor finishes adhere to a floor, chemical or mechanical bonding. Chemically bonded finishes integrate into previous layers and essentially fuse into one layer of finish. Acid curing “Swedish” finishes will chemically bond to a wood floor and merge into one finish layer. The significant advantage of this type of bond is that it is virtually impossible for the finish to have adhesion problems to a wood floor regardless of the final burnishing steps or the species of the hardwood. Some species of hardwood contain a high content of oil and sometimes silica and this may create potential adhesion problems for a finish.
The second form of bonding of finish to a wood floor is a mechanical bond. A mechanical bond of a finish requires a roughed up surface so that finish can literally fall into the texture of that surface and “grab” the substrate. The layers of finish in a mechanically bonded system are much more sensitive to compatibility as they are applied in succession. For example, if you stain a wood floor with a penetrating stain, and then apply a weakly bonding quick dry oil sealer, followed by coats of waterborne urethane, there is a real chance for the finish layers to be torn off the floor following application of tape or some other sticky substrate. I have witnessed this firsthand and received many phone calls from distressed colleagues.
The final finishing grit of the sanding process can also affect adhesion. I know that there are sanding machines present that rotate with such significant speed that they may close down the grain of the hardwood floor at certain sandpaper grits so that a mechanically bonded finish will have problems sticking to the floor. In this case I recommend re-opening the grain by wetting or “water-popping” the floor.
A final and overlooked factor affecting finish adhesion occurs during abrasion of a finish coat layer in order to accept a new finish coat. The abrasives used to abrade the floor will typically become dull within a suggested square footage for usage. If a contractor continues to abrade the finish layer with a dull abrasive, the surface may again become too slick for the new finish layer to hold on. The result is that the finish will peel off the floor in big sheets.
Although this blog may not be particularly intriguing to all, it may serve as a reminder that there are sometimes questions to ask your contractor that go well beyond the price of the job.
Tags: floor finish durability, Hardwood floor durability, low-VOC hardwood floor finish, Swedish finish, waterborne finish
Posted in adhesion, hardwood floor finish | 1 Comment »
White Lines Syndrome
Saturday, August 1st, 2009
The latest trend in wood flooring has definitely been for darker floors and wider boards. Exotic wood flooring has also seen growth in market share. One of the unspoken problems is that when seasonal movement occurs within the boards of the floor some finishes can actually become stretched out during this process and they leave a white line down the seam of the boards. This problem is particularly bad with waterbased finishes that have come to dominate the market with low VOC laws emerging in many states. Waterborne finishes lay across the floor and essentially act as a hardened sheet of plastic that resists traffic.
Using an acid curing conversion varnish or true “Swedish” finish is the best option to prevent this problem. This is because the acid curing finishes will truly break their bond at the edge of each board and stick to the edges of that board during seasonal movement.
If you are planning a flooring project that requires wider boards, dark stain, or both I recommend thoroughly discussing the project with your contractor to prevent this problem. In fact there is so little published information for this problem because the industry doesn’t want you to know that there is a dark side to new technology. When white lines occur across your wood floor they almost always require a full refinish to remove and that is never a fun option for your time. If you would like more information please contact us for a PDF of the problem.
Tags: hardwood refinishing, low-VOC hardwood floor finish, Swedish finish, waterborne finish, wood floor sanding
Posted in Swedish finish, waterbased finish, white lines syndrome | 1 Comment »
What type of hardwood is the most durable?
Monday, February 23rd, 2009
The question I am most frequently asked by homeowners selecting new flooring is, “What wood is the most durable?” Again this is a trick question because there are three primary factors that will determine the durability of any hardwood floor: density of the material, finish coats, and maintenance.
The density of hardwood flooring material is tested by the Janka scale of hardness. Essentially, a standard sized ball bearing is hydraulically pressed into the material to a certain depth and that amount of force necessary to achieve that depth is measured. For red oak (a wood that is considered to be a hard material), the Janka hardness is around 1250. Now relate that to Brazilian walnut or Ipe, which has a Janka hardness of 3680, and you can see that material choice is a big factor. The density will help guard against dents in the floor when you drop phones, pots, pans, etc…
The second factor in the durability of a floor is what type of finish will be on the floor and how many finish coats will be applied. For this side of the discussion I will keep the post to on site finished floors. There are a myriad of finishes available, but the two I would most consider to be durable would be acid-curing Swedish finishes and 2 component chemically cross linked waterborne urethanes. The layers of a true Swedish finish chemically integrate to form one large finish layer and they have a lot of optical clarity when scratched so that the scratch won’t turn white. What this means is that these finishes will tolerate and rebound from a scratch quite well. By comparison, catalyzed waterborne finishes form a very hard surface layer over the floor. They somewhat resemble a hardened sheet of plastic over the floor that is very hard to scuff and scratch. My experience is that both finishes will last a very long time, although catalyzed waterbased finishes emit less odor when applied and it goes away much quicker.
Sometimes I think that people want the beauty of a wood floor but they never want to clean it and this seems a little odd to me. To properly clean and 800 square foot floor takes no longer than 10 minutes and requires only a microfiber mop and a small amount of hardwood floor cleaner. I DO NOT recommend cleaners that leave a residue on the floor such as Murphy’s oil soap or cleaners that are not pH balanced such as ammonia or water mixed with vinegar. Over time residue will dull the finish and non pH balanced cleaners will attack and destroy a finish. The final point is that I have seen countless people pay $5000 or more for a new floor or refinish who absolutely will not pay $200-300 a year to have a large dog’s toenails groomed once a month. This is one of the greatest contributors to scratching on a wood floor that can be avoided for a minimal cost. The only other recommendation I have is to use felt protectors on your furniture that moves regularly and small rugs at high traffic doors.
In the end your wood flooring investment is a product of good planning and maintenance. For any additional information, please e-mail us or visit our website.
Tags: floor finish durability, Hardwood floor durability, hardwood floor installation, hardwood refinishing, Portland hardwood floor, Swedish finish, waterborne finish
Posted in Hardwood floor durability | No Comments »
Planning for a quality Hardwood Floor Refinish
Tuesday, February 17th, 2009
Every week I do a number of hardwood refinishing estimates for homeowners and one of the most frequent questions asked is how long the process will take. The question is somewhat of a loaded question because a number of factors apply to the process. Two primary factors apply to the length of a standard hardwood refinish project: the type of finish used and the number of finish coats applied. Additional factors to consider may be if any repairs need to be done to the wood floor prior to sanding. Oftentimes pets may consistently urinate in spots of the home or during the watering process plants may overflow onto the wood floor, which causes dark spots from mold growth. The sanding process will not remove these stains usually, so a suitable repair with matching material is most often necessary.
The two predominant types of finish used in wood floor refinishing are oil based and waterbased finishes. Oil based finishes most commonly used are polyurethane and acid-curing Swedish finishes. Oil modified polyurethane has the slowest dry time and typically requires a full day of dry time between coats. Acid-curing Swedish finish systems are catalyzed chemically for the seal coats, which allows application of two coats in a day. The top coat is a much slower one day process of drying. In contrast most waterbased finishes will dry within 2-3 hours depending on the catalyst and coverage rate. I have seen waterbased floors coated with three coats in one day, although I do not recommend this typically.
Two additional key terms to understand are dry time and cure time. Dry time of a finish is the amount of time that it takes for the finish to be dry to the touch and walked on so that nothing sticks to the finish. Cure time is the amount of time that it takes for the finish to completely off-gas and achieve 100% of it’s hardness. The cure time of a typical water-based finish is approximately one week, although most waterborne finished are 90% cured within 48 hours. By comparison a typical oil-based finish has a longer cure time of 30-90 days.
Now that I have confused you thoroughly let me offer my best advice based on experience. I rarely recommend anyone to move in on a water-based floor in under 24 hours, although I allow my customers to walk on the finish sooner if required. Water-based finishes are very durable within an overnight dry time so that the floor can be walked on the morning after a final coat. By contrast I rarely recommend walking on a oil-based finish floor in under 24 hours and not moving in heavy furniture in under 48 hours. For a typical 800-1200 square foot hardwood floor refinish I would suggest allowing 5 days for the entire process of refinishing if three water-based finish coats are to be applied. Allow an additional 2-3 days if the floor is to be stained or oil-modified finish applied. If you have questions, then visit our website or e-mail us.
Tags: dustless refinishing, floor finish durability, hardwood refinishing, Portland hardwood floor, Swedish finish, waterborne finish, wood floor sanding
Posted in Dustless Hardwood Refinishing, Hardwood floor Portland, Hardwood floor refinish, floor refinishing portland oregon, portland hardwood professional | 3 Comments »