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Choosing a Window

Cory — Thu, 28 Jan 2010 08:04:41 +0000

With so many options, ratings and technologies out there, picking a window can be very confusing. Add to that, you will have your own criteria for look, comfort, energy savings and of course price. However, there are many resources out there that can make this quite easy for you. We’ll list them here:
• Energy efficient windows of any type are going to be more expensive than regular windows. This is something you will need to be prepared for. However, this one-time expense really pays off, and even your remodelling contractor will agree. Energy efficient windows can lead to money savings of 7-24% (acc. To the EPA) and in some climates, upto 40% annually. It is proven that in 2-3 years, energy efficient windows pay off for themselves.
• The kind of windows you will need depends largely on the climate in your region. Your climate impacts your heating and cooling requirements, your house design and your energy bills. In order that your windows provide you with an optimal solution, they need to keep comfortable as high as possible while keeping cost as low. Thankfully, you don’t have to do the math. This neat window selection tool on the efficient window collaborative website gives you how much you can save on different window types depending on where you live. Try it out here: http://www.efficientwindows.org/selection.cfm.
• As obvious, go for windows with the Energy Star rating or the NFRC (National Fenestration Rating Council) logo. Starting 2010, EPA has come up with improved energy star ratings for windows, which can get you tax credit of over $1,500. Make sure you check for a red label marked ‘Qualified until March 31, 2010’ which means the window was made according to the old rating system. The NFRC ratings will give you the values for the five criteria mentioned in our first post in this series and are also very reliable.

Windows and insulation

Cory — Sun, 24 Jan 2010 08:58:11 +0000

Sometimes getting the U-Factor, SHGC and VT values right is not enough. Often, the installation of the window itself, i.e. the entire window assembly can have flaws. These flaws result in air leakage – one of the main obstacles in trying to achieve energy efficiency with the help of windows.
If your house is built on the Passivhaus principles; or you are looking at seriously reducing your HVAC requirements (and thus the bill) then air leakages through windows can punch a large through your plan. Some energy efficient windows specify the AL value (expressed in cubic feet of air passing through for every square foot of the window assembly) between 0-1. The lower the value, the lesser the leakage. The industry-accepted value is 0.30.
Another problem for insulation is condensation. If you live in cold areas, you’ve probably seem frost or dew on the edges of the windows. Looks quite ‘Christmassy’ but it only means that much more heating load. Condensation happens when inside warm air comes into contact with cold panes and glass, which essentially means your windows are not doing such a good job insulating.
With condensation and air leakage, there aren’t fixed ratings to go by. However, certain materials and window technologies work better. For example, if you’re opting for multiple pane windows, looks for stainless steel spacers, or thermally improved spacers made from silicon foam or butyl tape. These spacers might be more expensive, but they are better are insulating, sealing and thus preventing unwanted heat transfer, while at the same time allowing from seasonal expansions and contractions in panes. Similarly, opting for energy efficient windows with two or more panes or glazing reduces condensation even at indoor humidity levels of 45-60%. This is especially true of windows with argon/krypton glass filled windows.

Windows and Natural lighting

Cory — Wed, 20 Jan 2010 08:09:34 +0000

It is very evident that the larger your window, the more natural light it will bring in. Depending on the positioning of your windows, and its visible transmittance (VT) value, your windows could provide you with enough natural light to greatly minimize if not eliminate electric lighting requirements during daytime.
VT values are generally given between 0-1. A rating of over 0.70 is the highest you can get with clear glass windows devoid of any coatings or tints. The more the number of panes, coatings and tints the lower the VT value.
A high Visible Transmittance has another advantage – it eliminates the cooling function which is usually required in a house that uses electric lighting. A high VT value is especially important when a home is built using passive house principles or design.
However, one thing to consider when it comes to VT, is that a window with a high VT value, will also admit that much more solar energy (heat) inside the room. Thus, a clear glass window with a VT of 0.8 will also have an SHGC of over 0.60 – something not at all desirable in a warm or sunny climate.
To get around this, one can use Low E coatings, which are invisible, and yet block heat gain considerably. These coatings also protect indoor furniture and upholstery from the damaging effects of UV rays. Another way is to have operable windows that you can open up to air the room out frequently. Needless to say, a good ventilation system is important when you have large windows and a sunny climate.
For windows that are low on SHGC and high on VT, look for a high Light-to-Solar gain ratio. This determines how much more light is let in without adding to the heat.

Led’s are much more cost effective than traditional lighting

Cory — Sat, 05 Dec 2009 08:00:32 +0000

There are also quite a few other things you should keep in mind when buying an installing LED lighting. Having the services of an experienced electrician at your disposal is very important, as is the knowledge of an interior designer who’s worked with LED lighting. Bear in mind the following points:
1. White LED lighting tends to emit a specific kind of white light, which is different from other kinds of white light. This causes certain colors to be seen differently. Thus, you might find that your interiors don’t look the way they were supposed upon installing LED lighting. It is thus important to get a ‘test’ done, or seek professional opinion to see if your interiors will go with white LED lighting. (However, newer LEDs seem to have conquered this drawback)
2. Many people will opt for LEDs specifically because of their aesthetic appeal. However knowing where to use which LED lighting is another important factor determining the aesthetics of the entire setup. An array of LED lightings could be used to illuminate an entire room, while miniature LEDs are great for lighting up stairways, corridors and external paths to the house. Many will also use miniature LEDs for lighting up kitchen closets from the inside. Using the wrong LEDs in the wrong place could lead to an interior disaster.
3. LEDs are the most expensive option – only in the beginning. Their initial high price is off-set by their efficiency (and thus the lower bills) and their lifetime. However, using them correctly is important to ensure this happens. Another aspect we suggest to all our customers who look at green building – When it comes to making eco-friendly decisions, we need to look at life time costs, rather than one-time costs. In this regard, LED seems to win the race.

LED’s offer huge Enviormental Savings

Cory — Mon, 30 Nov 2009 08:08:40 +0000

The main reason we’ve included LED in our recommendations, is because they’re quite eco-friendly, compared to all other options. LED produce much more light per watt of electricity. To be precise they produce around 18-22 lumens per watt, much higher than the incandescent and fluorescent lamps. This means they use less power to produce more, which cumulatively adds up to a lot of energy savings. In fact, the US DOE estimates that if LED lighting were used on a large scale, it would convert to savings of $265 billion, reduce electricity demand for lighting purposes by 33% ; and avoid the set up of 40 power plants across the country.
Also, every time you turn on the lights, you’re contributing to CO2 emissions to the tune of 196 pounds per year, for every light bulb in your house. LED lamps bring this to just 63 pounds every year. LED lighting is also non-toxic, it does not contain mercury like fluorescent lamps and thus recycling them is less hazardous. A few other benefits:
• LEDs are extremely small and are available in different colours. This goes well when you try to get creative with lighting in your house.
• LEDs can be dimmed quite easily. Repeated on-off cycles don’t damage LEDs the way they damage other lights. Thus, using LEDs for Christmas lighting is the ideal option
• They’re shock resistant, not fragile like usual bulbs.

More Furniture Ideas

Cory — Sat, 31 Oct 2009 08:17:32 +0000

Getting eco-friendly furniture is now easier than ever. Many more people are joining the green bandwagon and manufacturers are more than happy to tap into this market, while doing their bit for the environment. More and more people are opting for furniture made from reclaimed or recycled materials over wood and companies are happily going first to landfills and then to the banks.

After bamboo, recycled rubber, tin cans and cane, it is now time for Urban Wood. This is a relatively new entrant is the eco-friendly market but is catching quite fast. Urban wood furniture is made from wood that is salvaged around cities from tree falls, demolitions, and generally from the road side. Most of this furniture maintains its rough and ‘woody’ look and people seem to fall for it.

Another very unique and beautiful furniture or rather material option is found with Kirei USA. Kirei manufactures tiles and furniture material made from coconut, wheat, bamboo and kirei. Their tiles made for coconut bark and fiber area thing of beauty and their Wheatboards bamboo are excellent fire-resistant substitutes for wood. Their flagship Kirei board is lighter than wood but as durable and strong. Each of these materials also possess a texture and colour unique to the raw material that adds to its aesthetic appeal.

Remodeling – The Home Plan

Cory — Fri, 25 Sep 2009 08:44:50 +0000

Remodeling – The Home Plan

Truth be told, when homeowners start off with remodeling their home; they have no idea as to what they actually want the home to look like, unless they know something about construction and architecture. Normally, they will wait till the contractor draws up certain plans, and then will generally approve or disapprove with little conviction in either case. So, when your contractor approaches you with the plans, this is what you should be noticing, and asking:

1. First and most important identify how family members use the rooms. The space requirement and positioning of rooms should be made accordingly in the plans. For example, does your wife take the kids’ lessons while cooking? If so, then the kitchen must be large enough to accommodate the wife’s requirements and sit the kids comfortably while they study. Similarly, if you work from home in the study, then you need to have the bathrooms close by. Or if you like entertaining guests every weekend, the living room needs to be large enough.
2. Keeping the family’s requirements in mind, is the house plan as eco-friendly as it could be? Ask your contractor to explain how much energy the new house will save as compared to the old house and if changes in the plan could make it better or worse. Don’t worry; contractors are more than happy answering questions.
3. How easy will it be to maintain the house, keeping in mind the time you have, and the environmental conditions?

The Design Build process explained

Cory — Sun, 02 Aug 2009 08:47:56 +0000

Design-build is a method or system of managing and delivering a construction project, by which one single contractor will take care of both the designing and the building. The alternative to this system is the design-bid-build system by which the owner would have to contract separately for the design phase and then for the construction with two separate entities.

The design-build system holds one individual usually the architect or a contractor, as the central figure, responsible for overseeing the entire project. This has obvious advantages for the owner – he has to interact only with one individual, co-ordination is easier and time is better managed. The design-build contractor or firm will strive to streamline the entire process of designing (drawing up plans), construction planning, obtaining permits, etc. Because of this streamlining, activities can easily be overlapped – construction on parts can begin even while the designing is in process. At times, the main contractor may involve other organizations on the project with him, but in those cases too, the contractor will be the one dealing with them.

This overlapping offers flexibility to make changes to the design of the house, while construction is in process. With the popular design-bid-build system, this isn’t possible, since construction can begin only once the blue prints are finalized. Thus, for a home remodeling projects, wherein owners may want to try out different ideas the design-build system offers a lot of freedom.

What is Passive Design?

Cory — Mon, 27 Jul 2009 08:16:47 +0000

The passive house standard for the best energy efficiency your home could have.

The Passive House standard (passivhaus in German) is a very strict and rigorous standard for energy efficiency in homes and other closed structures. Passive House standards lay down guidelines for creating houses that have ultra low energy requirements for their cooling and heating creating highly energy efficient structures. Passive House standard is often confused with Passive solar building design. Although both look at same ends – creating energy efficient buildings – passive solar building design is one of the techniques involved in creating a house that meets the Passive House standards. As such, Passive House can be said to be a broader building concept when it comes to green building.

The unique feature of houses created using the Passive House standard is that they save up to 90% heating costs, largely by employing passive solar techniques and excellent insulation and ventilation systems, AND it is possible to create such a house even in regions with relatively little sunlight at costs that can equal those of regular homes. In fact, passive houses are largely found in European, specifically Scandinavian countries, where sunlight is much less than what may be thought desirable to induce solar heating. Thus, it is easily possible to execute such a system in the kind of weather we have and more importantly, to make it sustainable.

Also, because of the kind of ‘air-tightness’ and insulation these houses provide, the indoor air quality of a passive house is much better than what is found in other houses (That’s one more credit on the LEED rating system in your pocket)

An alternitive to vinyl windows

Cory — Sat, 25 Jul 2009 03:08:09 +0000

Andersen is a popular name among homeowners and architects in the US when it comes to windows and doors. Whether green building and energy efficient homes interest you or not – Andersen is still the choice of many for their homes because of the quality, design finish and features of the windows and doors they manufacture. Andersen’s range of windows and doors have earned the SCS Indoor Advantage Gold Certification for Indoor Air Quality, by meeting the strictest emission guidelines in the US, making all of their products eligible among all other environmental rating programs – LEED included. Andersen 100 series is one such product range.

The 100 series windows have Andersen’s hallmark feature – energy efficient Low E glass that meet the energy star requirements. Along with this, the windows are partly made from reclaimed wood fibre (40%) and reclaimed glass (12%). However, this doesn’t compromise durability, as the windows are twice as strong and rigid as vinyl. The 100 series windows come in 4 different exterior colours – cocoa bean, terratone, sandtone and white. It offers a combination of sizes, shapes and styles to suit every architectural need.

At Laupen Homes, we’ve been using the cocoa bean windows for a current project in Olympia – the Cooper residence. The best thing about these windows is that they can be painted, an option not available with vinyl. Our experience so far has been great – it makes a great alternative to vinyl and we plan to use it again.

There’s more – Products of the 100 series are eligible for a tax credit of up to $1500 if purchased before 31^st December 2010. All customers have to do is preserve the sales receipt and a manufacturer’s certification statement to claim tax credit.