Easy Install Guide and recommended insulating foil to Achieve a U value of 0.16

The need for insulation foil

When properly installed, the insulation reduces the heat transfer through the building envelope. If ever there was a temperature difference, heat flows naturally from a warm area to a cooler area. To maintain comfort in winter, heat is lost must be replaced by heating and summer, the heat gained must be removed from the cooling system. Statistics show that 50% to 70% of the energy used in the average home in the United Kingdomfor heating and cooling. It makes sense to use the thermal insulation to reduce energy consumption while increasing comfort and saving money. Naturally, less consumption of fossil fuels and energy from the load lighten our eco-system must meet.

To summarize, insulation of the building `s conditioned room makes these important points:

It provides a much more comfortable, productive and enjoyable. In addition, the effects of moisturecondensation and displacement of air are minimized in well insulated buildings. This translates into lower maintenance costs and greater longitivity building.
Reduces the demand for energy, a lower electricity bill.
Support cost savings, environmental and energy. This is evidenced by several studies sponsored by the Energy Commission.

The heat moves through the wall cavities or between roofs and attic floors by radiation, convection and conductionradiation is the dominant mode of heat transfer. A reflective insulation is an effective barrier against radiant heat transfer v, because it reflects most of the infrared radiation strickeing the surface and very low heat conducted through it. Based on its impermeable surface, reflective insulation also reduces convective heat transfer. Mass insulation such as glass fiber, polyisocyanurate (PIR) rigid foam insulation board or mineral wool, especially slow heat flow, convection, and eliminatingreduce some radiation. reflective insulation makes for a drastic reduction in the flow of heat radiation and some convection. Spray foam and polyisocyanurate boards may provide greater resistance to conductive transfer until the gas cell is lost or diluted with air usually for a period of 15 years.

What is Radiant Barrier Reflective Insulation? Radiant barrier insulation is a reflective insulation system that offers a permanent energy costs. Radiant Barrierinsulation systems reflect radiant heat energy instead of trying to absorb. A pure aluminum radiant barrier reflective insulation is unaffected by humidity and will continue to play at a constant level, regardless of how wet. A radiant barrier insulation system is a sheet in front of an airspace and is installed in the building envelope.

Most people are familiar with traditional insulating materials such as fiberglass, cellulose, Polyiscyanuratepanels, polystyrene and rock wool. These products use their ability to absorb or resist (slow down) convective and conductive heat transfer to insulate (R-value). A third form, but rarely discussed dominant heat transfer exists: radiant heat transfer. What are the differences between the three forms of heat transfer? Conductive: Direct contact. If you touch a pot on the stove, this is conductive heat transfer. Convective: Steam, moisture. If the hand above a boiling pot, youheat in the form of steam. These convective heat transfer.

Radiant: Electromagnetic. Step outside on a sunny day and feel the sun on your face. Do you feel the radiant heat transfer. All objects above absolute zero (-459.7 degrees Celsius) emit infrared rays in a straight line in all directions.

A radiant barrier reflects radiant heat energy instead of trying to absorb. What does this mean in your home or business? During the winter, 50-75% of heat loss through theCeiling / roof system and 65-80% of heat loss through walls is radiant. In summer, 93% of heat gain is radiant. If depends on the value of R (resistance) alone to insulate against heat gain and loss, remember that traditional forms of insulation are virtually transparent to radiant energy and are affected by changes in humidity (moisture). A 1-1/2% change in moisture content of fiberglass insulation will result in a reduction of 36% in performance(Referred to as HVAC Manual 10.6; McGraw-Hill). A pure aluminum radiant barrier is unaffected by humidity and will continue to play at a constant level, regardless of how wet.

Concept of reflective insulation

Different types of insulation products to reduce the heat transferred by conduction, convection and radiation in varying degrees. As a result, each offering different thermal performance and its "R" values. The primary function of reflective insulationreduce the radiative heat transfer across open spaces, significant contribution to earnings in the loss of heat in summer and warm in winter. The low emissivity of metal surfaces FOI product blocks up to 97% of the radiation and therefore a significant part of heat transfer. There are many types of materials that reduce heat gain and heat loss. Some materials provide greater resistance than others, depending on the mode of heat transfer: convection or radiation. Most insulation materials work onprinciple of trapped air, gas is a good insulator. layers of insulation mass, such as fiberglass, foam and cellulose fiber glass, plastic and wood fiber, respectively, convection, and thus reduces the reduction of heat transfer. These materials also reduce heat transfer by conduction due to the presence of trapped air. (However, these products, as most construction materials have a very high radiant transfer.) Heat flow by radiation is brought to the public `s attention with highefficiency windows, which often use the term "low E" to advertise the higher performance evaluations. This value is measured in emitance or "and" values ranging from 0 to 1 (low value "E" indicates better performance). Most building materials, including fiberglass, foam and cellulose are "E" values greater than 0.70. Reflective insulation typically have "E" values of 0.03 (again, lower is better). Therefore, the reflective insulation is superior to other types of insulating materialsreduce the flow of heat by radiation. The term reflective insulation in some ways a misnomer, since aluminum or polyester, and works to reflect heat (reflectance of 0.97) or by radiant heat (emitance of 0.03), or emitance or reflectivity, the performance (heat transfer) is the same. As reflective insulation is installed in wall cavities, air-drop (like other insulation materials), and then reduce the heat flow and convection in response to both modes of heattransfer. In all cases, the reflective material next to a layer of air. Film, when placed between two pieces of plywood, for example, the heat in a fast pace.

The UK regulations require us to reach the insulation value of 0.16 AU has to offer, this can be achieved by using more of our films in co-junction with fiberglass or polyisocyanurate (PIR) board.To provides more detail would be advisable to consult your local buildingspecifying what they need, as we have seen many municipalities differ from the specifications. We would recommened the following specifications and have many excellent reports on the work undertaken throughout the UK and France. If this is an isolation of more and get a job creating a warm roof, would polyisocyanurate board of 70 mm or 100 mm of glass wool between the rafters of its use, cover the face of the trusses with a padded lining, it is recommended film Actis Super 10, Super 19, or Aluma FlexAluthermo Quatro. all these materials we stock for immediate shipment. If the movie you really want to get a value somewhere between U, 18 -, 20, which is quite acceptable on a renovation project. I f the tiles have been removed is foil insulation above the rafters and the counter mode was to be introduced and a membrane to cover these batons and tiles. The most important aspect of a piece of insulating airspace between 25 mmand any film coating material, will provide the heat transfer, with the advantage that it eliminates the reflection from the surface of the paper. Bubble Wrap is a fun low-cost way to share large insulate your house, very popular in the U.S. and is known as house wrap, low cost and very effective way to maintain calm in the house months Sumer, and heat retention in winter.

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The Basics of Insulating Concrete Form Construction Technology

Insulating Concrete Forms, also known as ICF construction, is a concrete building system that offers superior strength, energy efficiency, durability and comfort compared to traditional construction methods. Although it has been predominantly used in the residential market during the past decade, commercial applications are rapidly increasing.

There are several other concrete home building systems, including masonry, reusable forms and pre-cast products. This article focuses on ICF technology and not on any specific manufacturer in the ICF industry.

ICF construction technology is not smoke and mirrors. It is a very proven product in a new package. Simply put, it is a reinforced concrete wall identical to the ones that have been designed for years as basements, foundations and retaining walls. The advantage is that the forming system is very lightweight, has high insulation properties and does not require removal. The finished wall generally incorporates integral attachment points for interior and exterior finishes.

With an ICF wall, the forms are stacked, the walls are braced and aligned and the concrete is placed in the stay-in-place form. The wall is simply a monolithic concrete core (just like any other concrete wall), with two continuous insulation layers. The faces (AKA flange) of the ties function as the furring strips for attaching interior and exterior finishes.

The initial idea for insulated block construction has been around for over 50 years. In the 70's, polystyrene foam was introduced. NAHB (National Association of Home Builders) performs an annual survey of residential builders across the US. According to their research, the market has exploded during the past 5 years. The ICFA (Insulating Concrete Forms Association at http://www.forms.org) reported that 16 percent of all new custom home starts in 2004 used ICF technology and the industry is growing by over 30% per year.

Conceptually, ICF technology is rather simple. They all use the same basic components including a face shell of expanded polystyrene foam, a core of reinforced concrete and a plastic form tie that supports the face during concrete placement. The foam panels are typically fully reversible, 2.5" thick by 16" tall by 48" in length. The plastic ties are typically 6" on center which provides incredible stability during concrete placement. The ties are embedded ½" inside the foam panel and their position is marked on the foam panel so installers can easily find them. The foam provides an R-22 continuous insulation plane from the footing to the top plate.

The concrete in an ICF wall is nothing special. Design specifications are typical of conventional foundation requirements. The one minor difference is the aggregate size. It is typically 3/8" pea gravel to allow for easy and smooth pumping of the concrete, especially for above grade applications.

Concrete placed inside an ICF actually achieves much higher than normal and specified strength. This is due to the ideal curing conditions, stable temperature and slow moisture loss rates inside the expanded polystyrene panels.

There are currently over 70 manufacturers of ICF's in the market around the US. I always get asked the question "Which one is the best?" The answer I always give is "Which is better, a Ford or a Chevy?" Depending on who is asking, I have the following responses:

Homeowner: It shouldn't matter to you. From a user's perspective, all ICF brands perform dramatically better than frame construction under every circumstance. The differences between brands will not be noticeable to you. You should perform standard due diligence and locate the best contractor and let the contractor use the product that he and his crew is most comfortable using.

Contractor: Here the differences are the greatest and affect the type and amount of labor required for installation and also the waste factor. Some brands require more on-site labor, others have a lower material and/or shipping cost. Others are pre-assembled to minimize on-site labor. Some forms have waste percentages approaching 10%, while others are closer to 1%. It really depends on personal preference and experience of the construction crew.

Architect: Cavity configuration affects the structural performance slightly, but all ICF brands have load-bearing and shear strength capacities far exceeding frame walls (up to 600% greater in some cases). As a designer, the biggest concern is the web tie face size and web tie spacing. (Example, vertical lap siding may require additional furring if the tie face is vertically oriented and has a wide spacing). It is worth noting that the placement of windows, doors and T-walls can be affected by web tie spacing. Typically, flat wall ICF products with closer web tie spacing require significantly less attention to these details.

I suggest contacting the Insulating Concrete Forms Association via the internet to obtain a list of primary members. These are some of the largest and best established companies. Like most any construction product you specify, whether it is plumbing, lumber, or windows, it is the local people providing the support and service that always make the biggest difference. Other valuable sources of reliable and non-biased information include: www.icfweb.com, www.icfhomes.com. It is worth noting that there are many other excellent resources available via the internet and that I don't own or control any of the websites listed in this article.

There are three interior core configurations of ICF's. Flat wall is a simple vertical section of uniform thickness and is the easiest to engineer and install. Waffle grid has vertical and horizontal cores - alignment of cores must be maintained by installers, but uses about 25% less concrete than flat wall. The thin web section is about 2" to 3" thick. Screen grid has same alignment requirements of waffle grid and utilizes a field installed spline between blocks for finish attachment. All three types are included in the Prescriptive Method for ICF Wall Design and the International Residential Code (IRC 2006) and concrete walls are typically all designed and engineered according the ACI 318. However, the newest engineering code standard, ACI 560, will no longer provide engineering data for waffle or screen grid ICF products.

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