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Pre-Construction Termite Treatment

Termites are insects of the Isoptera order, and feed primarily on dead plant material, including wood. About 10 percent of termite species are responsible for extensive damage in homes and other man-made structures. Ridding a home or structure of termites can be accomplished in several ways, but prevention is best. Prevention should start with the design of the home and the yard, placement of wood in the structure, and use of the right building materials.

Design

1. The most common way for termites to enter a building is from underground. Building a home or structure on a concrete slab will prevent subterranean entry, but only if the slab has no cracks or holes.

2. If the home has a crawl space, the design should ensure it is properly vented. An unvented crawl space becomes warm and humid and provides a home for termites. Also design a gap of at least 18 inches between the soil and the lowest timbers.
Any exterior wood–skirts or latticework, for instance–should also end at least 18 inches above the ground to prevent it from becoming a pathway for the termites.

Materials

1. Using treated woods during construction can help ward off termites. Pressure treated lumber should be used for any part of the structure within 12 inches of the ground. Creosote treated wood is used in telephone poles and railroad ties to prevent termite infestations. Used railroad ties can be helpful in constructing outbuildings, but sometimes can contain carpenter ants.

2. Wood treated with chemicals such as chromated copper arsenate, alkaline copper quaternary or copper boron azole will also resist termites.
Some natural woods, such as redwood, juniper, cypress or cedar, are somewhat resistant to termites, but not as much as treated wood.
During construction, a good coat of paint will help stop termites, as will sealing cracks and seams. Treating exposed wood with borax preservatives also aids in keeping termites at bay.

Outside preparations

1.Termites like moisture, so remove any sources near the home. Prune back plants that will be near the house, make certain gutters do not pool water and design the system to it directs rain water from spouts away from the home’s foundation.

2. When installing sprinklers, make certain the spray does not reach the home, and that the water flows away from the structure. Keep mulch, which hold moisture in a garden or plant border, at least 6 inches away from the sidings of the home.
Avoid putting stored lumber, firewood, dead trees or shrubbery close to the building. Place screens on attic or foundation vents, where flying termites can enter and establish a colony.

Types of Foundation Piles

Foundation piles are groups of cylindrical or flat sections of wood, steel or concrete that are driven into soil to form part of a foundation. They are used when the soil near the surface is too weak to support the weight of the structure or building. Piles transfer this structural load to deeper soil or rock that is better able to carry the weight. Piles are classified depending on how they carry the structural load.

Timber Piles
Typically timber piles are tree trunks that are trimmed of branches and bark and that have no bends, large knots, splits or decay and are uniform from end to end. Timber piles are the cheapest types of foundation piles but have a lower load bearing capacity than steel or concrete and may not be suitable for areas where they are exposed to seasonal elements.

Concrete Piles
Concrete piles may be of two types. Pre-cast concrete piles are pre-made using reinforced or pre-stressed concrete. They have a high load-bearing capacity but longer piles are difficult to transport and they’re difficult to cut to a specific length.

Cast-in-place concrete piles are made by driving a cylindrical shell into the ground to the desired depth and then filling the shell with liquid concrete. The shell doesn’t contribute to load bearing capacity but provides a hole in order to make the concrete pile. These are preferred, as builders can form any length and depth and it isn’t necessary to transport them. However, conditions must be favorable as the concrete must be able to harden in the form.

Steel Piles
Steel piles come in various shapes and sizes but are usually rolled steel sections of seamless pipes that can be welded to lengths of up to 70 meters. Steel piles are treated before being placed as corrosion may be an issue. They are typically embedded into the soil with open ends and can be placed into hard surfaces such as boulders or rock beds.

Composite Piles
Composite piles are made of one material in the bottom section and another in the top section. The materials used depend on the weight of the structural load. A composite pile made of wood and concrete, for example, is used to support loads of 20 to 30 tons. One made of steel and concrete is used to support loads up to 50 tons.

Sheet Piles
Sheet piles are specially shaped interlocking piles made of steel, wood or formed concrete that are used to make a continuous wall that resists horizontal pressures from earth or water loads.

Bearing Piles
Driven vertically into the ground, bearing piles are used for the direct support of vertical loads, which they distribute through fairly soft soils that aren’t able to support concentrated loads.

End-Bearing Piles
End-bearing piles are driven through very soft soil, and they come to an end in hard, somewhat impenetrable material such as rock or dense gravel. Their carrying capacity comes from the resistance of the bottom layer of the pile.

Friction Piles
A friction pile is a pile that is driven into soil that is relatively uniform, but the tip of the pile is not settled into a hard layer. The weight of the structure is transferred downward and laterally by the friction between the pile and the surrounding soil.

Combination End-Bearing and Friction Piles
A pile might pass through soft soil that gives some frictional resistance, but then go into a denser layer that has a better load-bearing capacity. In this case, these piles carry loads by a combination of end-bearing and friction.

Batter Piles
Piles that are driven into the ground at an angle with vertical piles are called batter piles. When the foundation material fails to stop sideways movement of the vertical piles, batter piles will help bear the load. Batter piles are also used if the soil is compressible, in order to spread vertical loads over a larger area. Batter piles can be used alone (placed in opposite directions) as well.

Product Recommendation – Close Cell Foam Insulation

This page contains a brief summary of research done by The US Department of Energy, Oak Ridge National Laboratories, The Canadian Mortgage and Housing Corporation, The Canadian National Research Council and others. These studies show why Enviro Foam is better than Conventional Fiber Insulations such as Fiberglass, Cellulose, and Rockwool.

Why Enviro Foam Is Better

Enviro Foam is spray applied as a liquid and expands as a foam. As such it fills every single nook, cranny, crevice, hole, crack, and gap making a perfect continuous air-tight seal every time, regardless of complex framing and penetrations.

Enviro Foam has a “Real World” R-Value that is un compromised by external forces like temperature and wind. Fiber Insulations such as Fiberglass, Cellulose, and Rockwool merely slow down convection which accounts for 80% of heat loss. As the temperature drops, convection currents speed up and Fiber Insulations lose their effectiveness at slowing them down. Enviro Foam on the other hand stops convection. Wind is not a factor either for Enviro Foam due to its continuous air-tight seal.

Enviro Foam is its own building code approved Thermal Insulation, Air Barrier, and Vapour Barrier. Its closed cell structure stops convection currents, which eliminates condensation, moisture, and mold.

Enviro Foam adds structural strength to a building. Its rigid structure increases shear and racking strength by 300%.

Enviro Foam improves indoor air quality and comfort. Since it creates a continuous air-tight seal, dust and other exterior pollutants cannot enter the building. Also it does not contain any fibers, loose particles, VOCs (Volatile Organic Compounds) or CFCs (Chloro Fluoro Carbons) that can contaminate indoor air quality.

Enviro Foam increases comfort by decreasing noise. A building sprayed with Enviro Foam is much quieter; it decreases the noise from both the exterior environment and interior mechanical systems.

Enviro Foam is environmentally friendly. Enviro Foam is made from annually renewable Soybean oil and recycled plastic bottles.  It also utilizes a Zero Ozone Depletion Substance (Zero ODS) blowing agent. A building that is insulated and sealed with Enviro Foam will also use 50% to 80% less energy, reducing fossil fuel usage and decreasing greenhouse gas emissions. According to the 2003 NRC Survey of Household Energy Use, the average 2000 sq. ft. home can reduce its GHG emissions by 4.1 tonnes, the equivalent of taking 676 SUVs off the road.

Why Fiber Insulations like Fiberglass, Cellulose, and Rockwool Are Not As Good

Labeled vs. Installed Performance of Fiberglass Batts. Fiberglass Batt manufacturers measure R-Value under laboratory conditions. Even when Fiberglass is installed perfectly there is a disparity between the measured R-Value and the labeled value. The smallest compression or gap between batts or around penetrations can drastically reduce the measured R-Value. The same is true for any type of Fiber Batt Insulation.

 

The colder it gets outside the less effective Fiber Insulations such as Fiberglass, Cellulose and Rockwool are at keeping you warm inside. Enviro Foam has a “real world” R-Value which is not affected by external forces like temperature. Studies found that Fiberglass Insulation looses nearly half its R-Value with outside temperatures of -28°C. The same is true for all other Fiber Insulations such as Cellulose and Rockwool.

 

Laboratory Tested R-Values vs. Real World R-Values. Similar studies found the same effect with another external force: wind. Wind causes pressure differences across the exterior walls. Air Leakage compounds this effect as hot air leaks out the top of the building and cold air is sucked in at the bottom of the building. As a result of this pressure difference the polyethylene plastic vapour barrier is sucked into the wall cavity compressing Fiber Insulations such as Fiberglass, Cellulose and Rockwool. Depending on the strength of the wind R-Values can be cut by 40-80%.

Enviro Foam has the highest R-Value.R-Value is a measurement of thermal resistance. A higher R-Value means a greater ability to resist heat flow. Enviro Foam has the highest R-Value (7 per inch) of any insulation product available today.

If you would like to learn more about Enviro Foam and Spray Foam Insulation in general, please visit our How Enviro Foam Works page, our Frequently Asked Questions page, and read our report “The 7 Criteria of Highly Efficient Insulation”. If you have any more questions or would like more information please Contact Us directly. We look forward to helping you “save more than just your money.”