>> Tdegen, Im curious through your readings if they addressed on tankless water heater installs, where the incoming water is extremely cold even in the warmer months, how that effects performance. I know it was a problem in the early tankless days, wondering if it still is. Thanks! Everything that I read indicated that the gpm (gallons per minute) decreased proportionally with how much you wanted to raise the temperature of the water. Assuming that most water coming into the house is around 50 degrees and you want a hot shower (about 105 degrees), you want to raise the temp about 55 degrees. This would give you a flow rate of 5.5 gpm. On the other hand, if you have really cold intake water and you want *really* hot water - and want to raise the temperature by 80 degrees, your gpm would drop to 2.2. Every tank is different, the more you pay for the tank, the less gpm is affected. All tankless heaters are rated in this fashion and you should be able to get the exact figures of the model you are looking at buying. The best thing that you can do for yourself is to try to figure out how many gallons per minute you would like to use on average and how important it is for you to be at a certain temperature with a certain water pressure. That is, I like my showers hot, and I like the water pressure high. So all of my calculations will be based on my shower. If my washing machine takes a little longer to fill up, I don't really care. For things like radiant floor heating or maybe a jacuzzi... that's something out of my purview. On a side note: unless you want to be cleaning the heater every month, you will probably want to buy slightly larger heater than what you need. No matter how clean your water is, you'll still get some calcium build-up on the heating elements. This will lower your gpm slightly. I'd suggest buying about 10% over what you expect to use.

Yes, they had to sand it lightly and then carefully remove all dust and residue. I don’t get why you are buying this flooring to begin with though. I would never have bought it if I had known how poor the finish was and that the company didn’t care or stand behind their product. In the end, we spent much more than we would have if we had just bought a better product. There are quality wood and engineered floors out there. Why don’t you give them your business? I posted my experinece so that people could learn from my mistakes, not repeat them. 🙁

I'm having the same concern. I originally went to lumber liquidators and found a nice hand scraped strand bamboo flooring. I then went online and researched a load of companies. So far, I like Cali bamboo. My biggest concern was the formaldehyde in the products. Cali bamboo has little to no formaldehyde added in there product. I've read those same reviews about Morning star, but they were outdated. I was emailed a material safety data sheet on Morning Star brand, but no one could tell me how much formaldehyde content was in the morning star product. At the bottom of the sheet there was a disclaimer: "The information and data herein are believed to be accurate and have been compiled from sources deemed to be reliable. It is offered for your consideration, investigation and verification. Lumber Liquidators makes no warranty of any kind, express or implied, concerning the accuracy of completeness of the information and data herein. Lumber Liquidators will not be liable for claims relating to any party's use of or reliance on information and data contained herein regardless of whether it is claimed that the information and data are inaccurate, incomplete or otherwise misleading. It is incumbent upon the user to obtain the most up-to-date information". So I guess what they mean is that the info on the safety data sheet is BS. I'd like to know. Cali bamboo is great, but I actually prefer the hand scraped look they have from Morning Star at lumber liquidators. Does anyone know if Morning Stars 2011 line has added formaldehyde?? (That's the lovely odor you smell from the floors). I can't seem to be able to get a solid answer. This is what the safety data sheet states for Morning Star: 3000 John Deere Road Toano, VA 23168 Emergency phone: 1 800-HARDWOOD Fax: 1 757 259 7295 IMPORTANT NOTICE: This material Safety Data Sheet (MSDS) is issued by LUMBER LIQUIDATORS. LUMBER LIQUIDATORS flooring will issue a new MSDS when there is a change in product specifications and/or regulations. LUMBER LIQUIDATORS will not accept any responsibility for any change to its MSDS in content by other person or organization. IDENTIFICATION Product name: Prefinished Strand Bamboo Flooring Trade name: Morning Star Bamboo Flooring Other Names: Various Manufacturer Information: Lumber Liquidators Inc 3000 John Deere Road Toano, VA 23168 Tel: (757) 259-4280 Fax: (757) 259-7295 www.lumberliquidators.com Description: This product is composed of bamboo fibers bonded together with urea formaldehyde (UF) resins. The fibers are mixed and pressed together to give a unique shade blend and increase hardness. The wear layer is finished by 7 coats of polyurethane with aluminum oxide coating manufactured by Treffert or Klumpp UN number: Not applicable Dangerous goods class: Not applicable Product Use: Building Materials � Commercial or Residential MSDS Morning Star Strand Bamboo Flooring, Revision 3, April 2009 Page 2 of 7 Hazardous ingredients/identity information: Name CAS #2 % Agency Exposure Limits Comments Bamboo1 None 89-90 OSHA3 OSHA ACGIH4 ACGIH PEL5-TWA6 15 mg/m3 PEL-TWA 5 mg/m3 TLV7-TWA 3 mg/m3 TLV-STEL8 10 mg/m3 Total dust Respirable dust fraction Respirable dust fraction Inhalable particles Urea Formaldehyde resin solids 9011- 05-6 10-11 OSHA OSHA ACGIH PEL-TWA 0.75ppm PEL-STEL 2 ppm TLV - Ceiling 0.3 ppm Free gaseous formaldehyde (contains less than 0.1% free formaldehyde) UV Finish Polymerized polyurethane None 0-1 OSHA ACGIH PEL-TWA none TLV-TWA none None None 1 CAS # = Chemical Abstract System. 2 OSHA = Occupational Safety and Health Administration. 3 AGCIH = American Conference of Government Industrial Hygienists. 4 PEL = Permissible Exposure Limit. 5 TWA = Time Weighted Average. 6 TLV = Threshold Limit Value. 7 STEL = Short Term Exposure Limit Note: Bamboo is a member of the grass family which has distinct anatomical differences from that of wood. Therefore, bamboo would be regulated as an organic dust in a category known as "Particulates Not Otherwise Regulated" (PNOR), or Nuisance Dust by OSHA. The ACGIH classifies dust or particulate in this category as "Particulates Not otherwise Specified". Physical data: Physical State: Solid Boiling Point: Not applicable Freezing Point: Not applicable Specific Gravity: 0.58 g/ml Vapour Density: Not applicable % Volatiles By Volume: 0 Melting Point: Not applicable Vapour Pressure: Not applicable Percent Moisture 5% - 9% Solubility in H20 (% by wt.): Evaporation Rate (Butyl Acetate = 1): Not applicable pH: Not applicable MSDS Morning Star Strand Bamboo Flooring, Revision 3, April 2009 Page 3 of 7 Appearance and odor: Bamboo fibers mixed creating a shade blend unique to each plank (light yellows for natural, light browns for carbonized or a mix of lights yellows and light browns shades). This product can also be stained with various colors. Low-fuming urea formaldehyde resins have a slightly aromatic odor. Fire and explosion data: Flash Point: Not applicable Auto ignition Temperature: Not available, however, it is usually accepted that the ignition of bamboo begins when the temperature reaches 204-260�C (400�500�F). (Depends upon duration of exposure to heat source and other variables). Explosive Limits in Air: Not applicable. See below under "Unusual fire and explosion hazards" Extinguishing Media Water, Carbon dioxide, Dry chemical, Sand. Special Fire Fighting Procedures None Unusual Fire and Explosion Hazards Sawing, sanding or machining can produce bamboo dust as a by-product which may present an explosion hazard if a dust cloud contacts an ignition source. An airborne concentration of air is often used as the LEL for bamboo dust. Reactivity data: Conditions Contributing to Instability Stable under normal conditions Conditions to avoid Excessive moisture, condensation or water vapor; Open flame or conditions above 400 F. Incompatibility Avoid contact with oxidizing agents. Avoid open flame. Product may ignite when temperature reaches in excess of 204�C (400�F). Hazardous Decomposition Products Thermal and/or thermal oxidative decomposition can produce irritating and toxic fumes and gases, including carbon monoxide, hydrogen cyanide, aldehydes, organic acids and polynuclear aromatic compounds. Hazardous Polymerization Not applicable MSDS Morning Star Strand Bamboo Flooring, Revision 3, April 2009 Page 4 of 7 HEALTH HAZARD INFORMATION Carcinogenicity Listing: (X) NTP1: Group 2, A & B Formaldehyde, Wood dust NTP-Group 2: Reasonably anticipated to be a carcinogen. A) Limited evidence of carcinogenicity from studies in humans which indicates that causal relationship is credible. B) Sufficient evidence of carcinogenicity from studies in experimental animals (X) IARC2 Monographs; Formaldehyde, Group 2A, Wood dust, Group 1 IARC-Group 1: Carcinogenic to humans; sufficient evidence of carcinogenicity. This classification is primarily based on studies showing an association between occupational exposure to wood dust and adenocarcinoma of the nasal cavities and paranasal sinuses. (X) OSHA3 Regulated: Formaldehyde IARC-Group 2A: Probably carcinogenic to humans; limited human evidence and sufficient evidence in experimental animals. Studies of cancer incidence among workers in a wide variety of occupations have failed to convincingly show carcinogenic activity of formaldehyde in humans. Gaseous formaldehyde has been shown to cause cancer in certain laboratory animals after long-term exposure to very high concentrations (14+ ppm); concentrations which are far above the levels of formaldehyde gas emitted by this product. 1 NTP = National Toxicology Program 2 IARC = International Agency for Research on Cancer 3 OSHA = Occupational Safety and Health Administration Exposure hazard: Eye Contact Wood dust can cause mechanical irritation such redness and watering. Skin Contact Not applicable for this product in its purchased form, however various species of wood dust may evoke allergic contact dermatitis in sensitized individuals. High concentrations of gaseous formaldehyde may cause allergic contact dermatitis. Ingestion Not likely to occur under normal use. If ingested, may cause gastrointestinal tract irritation. MSDS Morning Star Strand Bamboo Flooring, Revision 3, April 2009 Page 5 of 7 Inhalation Not applicable for this product in its purchased form, however, wood dust may cause nasal dryness, irritation and obstruction. Coughing and sneezing; sinusitis and prolonged colds have also been reported. Wood dust, depending on species, may cause respiratory sensitization and/or irritation. However, gaseous formaldehyde may cause respiratory difficulties for sensitized/allergic individuals. Emergency and first aid procedures: Eyes Flush eyes with large amounts of water. Remove to fresh air. If irritation persists, get medical attention. Skin Wash affected areas with soap and water. Get medical advice if rash or persistent irritation or dermatitis occurs. Inhalation Although not applicable for this product in its purchased form. However, if inhalation of bamboo dust, remove to fresh air. Get medical advice if persistent irritation, severe coughing or breathing difficulty occurs. Ingestion Not applicable under normal use. PRECAUTIONS FOR USE Accidental Release Measures Not applicable for product in purchased form. Dust generated from sawing, sanding, drilling, or routing of products may be vacuumed or shoveled for recovery or disposal. Avoid dusty conditions and provide good ventilation. A NIOSH-approved dust respirator should be worn if dust exposure limits are exceeded. Handling and Storage No special handling precautions are required for products in purchased form. Keep in cool, dry place away from open flame. This product will release small quantities of gaseous formaldehyde (≤0.12 mg/m3, which is below the E1 classification in accordance with EN 717-1:1998 test methods). Store in well ventilated area. MSDS Morning Star Strand Bamboo Flooring, Revision 3, April 2009 Page 6 of 7 Personal Protective Equipment: Respiratory Protection Not applicable for product in purchased form. A NIOSH-approved dust respirator is recommended when allowable exposure limits are exceeded. Protective Gloves Not required. However, cloth, canvas, or leather gloves are recommended to minimize potential mechanical irritation slivers from handling and machining product. Eye Protection Not applicable for product in purchased form. Goggles or safety glasses are recommended when machining this product. Other Protective Clothing or Equipments Not applicable for product in purchased form. Outer garments may be desirable in extremely dusty areas. Work/Hygiene Practices Follow good hygienic and housekeeping practices. Clean up areas where wood dust settles to avoid excessive accumulation of this combustible material. Minimize blowdown or other practices that generate high airborne-dust concentrations. Local Exhaust Provide local exhaust as needed so that exposure limits are met. Special / other None OTHER INFORMATION Disposal Consideration If disposed of or discarded in its purchased form, incineration is preferable. Dry land disposal is accepted in most states. It is, however, the user�s responsibility to determine at the time of disposal whether your product meets RCRA criteria for hazardous waste. Follow applicable federal, state, and local regulations. Transport and Regulatory information Not regulated as hazardous material by the U.S Department of Transportation and the Canadian Transportation of Dangerous Goods (TDG). Not a controlled product by WHMIS

Whatever you do, dont do a slab! My parents house has a slab and it's increadibly inflexible. If you have sand or clay, you can get settling issues over time that are very hard or very expensive to fix. Plumbing problems? Have fun not only tearing up your floors but breaking up and replacing concrete. Very messy! If my father had it to do over again he would never do a slab but a crawlspace or basement. If you have clay, especially with the tempurature flucations you get in Canada - well, good luck with that. With a crawlspace you can easily deal with any of the issues that were pointed out above. Foundation settles? You can relevel your house pretty easily since it's "floating" on the peremiter foundation. And just because you have a slab doesn't mean you can't have moisture or radon problems either - and if the builder gets the slab wrong you are faced with a very messy and expensive fix worse than if you have a plumbing issue. I'm puzzled with your mentioning a basement - if you have a basement, this is all moot - there is no slab except for the basement floor. You don't want to do a crawlspace under a basement floor - ventalation would be insane. But I would do a thermal break - vapor barrior and 2" - 4" of rigid foam before pouring the basement slab. Better still, since you want to finish the basement embedd radiant heat in that slab that's on top of foam. I'm thinking about re-doing the floor in my basement to get radiant heat - it's awesome! If you do go basement or crawlspace, be sure the builder is using engineered joists for the sub-floor. Read the manufacturers guidance for the maximum size of holes and minimum distances between multiple holes through the webbing or center of the joists. Manufacturers provide this information for a reason - improper holes through the joists dramatically compromise the structural integrety of the joists which leads to at best overly bouncy floors, at worse floors that collapse! Be very wary of plubmbers and HVAC contractors - they often hack through structural members with impunity. Hold your builder accountable to maintaining the recommendataions of the manufacturer of the joists (or any other product) and NOT CODE! Get it in writing! Code is the MINIMUM - but you want your minimum to be the manufacturers guidance. I had to put up an extra knee wall in my basement to strengthen a floor that was weakened due to an overzelous HVAC guy that destroyed two joists routing the fresh air intake for my furnace. Learn from the experience of others. If you can find a home inspector that actually knows building code and has experience with engineering, stipulate that you will do your own pre-drywall structural inspection and then final inspection with your own inspector. Trust but verify... Good luck! Just don't do a slab ;)