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In the bone-dry laboratory environment where R-value is tested, all products perform to the best of their ability. But R-value (which is a measure of how insulation resists the conductive flow of heat) is not an effective way of measuring performance in a real living space, says Terra Lana’s Brad Stuart.

This is because in real homes a bone-dry, laboratory environment is not possible – there are often draughts and moisture to contend with and R-value simply doesn’t test for how these impact on insulation performance.  

In addition to R-value, Brad says durability, rigidity and the ability for the insulation to manage moisture are three other key indicators of performance.

He says natural fibres are known to perform in a range of moist and draughty environments and as such are generally higher performing than synthetics.

In the bone-dry laboratory environment where R-value is tested, all products perform to the best of their ability. But R-value (which is a measure of how insulation resists the conductive flow of heat) is not an effective way of measuring performance in a real living space, says Terra Lana’s Brad Stuart.

This is because in real homes a bone-dry, laboratory environment is not possible – there are often draughts and moisture to contend with and R-value simply doesn’t test for how these impact on insulation performance.  

In addition to R-value, Brad says durability, rigidity and the ability for the insulation to manage moisture are three other key indicators of performance.

He says natural fibres are known to perform in a range of moist and draughty environments and as such are generally higher performing than synthetics.

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“As consumers we often choose to wear and pay more for wool over synthetics because we know it performs and keeps us comfortable - the same goes for insulation.”

Every home has moisture in it even if it can’t be seen, and wool’s natural ability to absorb and release moisture is excellent for reducing the risk of mould and other moisture related problems to occur. The result is a warmer, drier and healthier home, says Brad.

Terra Lana insulation is made from locally grown and sourced recycled wool which is cleaned and blended with polyester. The polyester melts the wool fibres together to create the rigidity needed to last a lifetime inside the walls and ceilings of a home, without slumping.

It also has excellent acoustic properties. The high density wool-blend, combined with its natural wool properties creates the perfect combination for mid-floor and internal wall insulation within a home. Terra Lana has been tested with Marshall Day acoustics to give quality assurance.

“As consumers we often choose to wear and pay more for wool over synthetics because we know it performs and keeps us comfortable - the same goes for insulation.”

Every home has moisture in it even if it can’t be seen, and wool’s natural ability to absorb and release moisture is excellent for reducing the risk of mould and other moisture related problems to occur. The result is a warmer, drier and healthier home, says Brad.

Terra Lana insulation is made from locally grown and sourced recycled wool which is cleaned and blended with polyester. The polyester melts the wool fibres together to create the rigidity needed to last a lifetime inside the walls and ceilings of a home, without slumping.

It also has excellent acoustic properties. The high density wool-blend, combined with its natural wool properties creates the perfect combination for mid-floor and internal wall insulation within a home. Terra Lana has been tested with Marshall Day acoustics to give quality assurance.

Sustainable and circular economy practice is another important advantage to Terra Lana’s insulation as they are able to re-use all offcuts made during the manufacturing process, or on-site installations, and recycle 100% of it back into new insulation product.  

The wool used is recycled waste from the carpet manufacturing process that would otherwise go to landfill.

“We are utilising a waste stream,” says Brad. “We have very low waste in the factory and we are minimising on site waste so that’s a benefit for the builder too, otherwise it just goes in the skip, and the builder pays to get it dumped.”

Terra Lana wool-blend insulation won’t break down over time, so the insulation put in now will still be in place when the plasterboard is ripped off for a renovation in 50 years’ time. This means investing in wool insulation is far more cost effective than other solutions says Brad,

Sustainable and circular economy practice is another important advantage to Terra Lana’s insulation as they are able to re-use all offcuts made during the manufacturing process, or on-site installations, and recycle 100% of it back into new insulation product.  

The wool used is recycled waste from the carpet manufacturing process that would otherwise go to landfill.

“We are utilising a waste stream,” says Brad. “We have very low waste in the factory and we are minimising on site waste so that’s a benefit for the builder too, otherwise it just goes in the skip, and the builder pays to get it dumped.”

Terra Lana wool-blend insulation won’t break down over time, so the insulation put in now will still be in place when the plasterboard is ripped off for a renovation in 50 years’ time. This means investing in wool insulation is far more cost effective than other solutions says Brad,

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“Over the total cost of a new build, the homeowner would pay approximately half a per cent extra to upgrade to wool.  It’s more affordable than what’s portrayed in the market, especially when you take into account all the benefits.  We have a truly sustainable product that will perform for the life of the building and beyond.”

But quality insulation that will last a lifetime also requires a quality installation.  Any gaps or compression will negate the efficacy of the product, wool or otherwise.

Brad says Terra Lana prides themselves on their craftsmanship when it comes to installation, “because it does take a level of precision to install insulation properly and the product will only perform as well as it’s installed.”

During the installation process, the safety of the installers is also protected, because the product is safe to touch and hypoallergenic.

Additionally, the toxic dust associated with some other types of insulation doesn’t exist with Terra Lana.  This means it enhances air quality and makes it a healthier alternative all round for both the homeowner and the person installing it.

If consumers want to protect their own health as well as their builder’s and get a product that lasts a lifetime they need to specify wool insulation to their architect and builder because the default setting is to specify the cheapest product available, says Brad.  

But despite the slightly higher initial outlay for wool insulation, the cost to the consumer can come in other ways when they buy lower grade product, says Brad, such as to their health, or when they need to replace the sub-standard insulation.

“It’s ultimately more economical because quality insulation will reduce the cost to heat and cool your home by keeping the atmosphere drier for the life of the building.”  

Terra Lana Insulation is Declare certified (non-toxic ingredients) and is available in blankets, rolls and segments to ensure the best product is supplied for each area of the home. Custom widths and lengths can also be made on request.

Want to know more about wool insulation? Be sure to visit Terra Lana on ArchiPro today or call their Christchurch office to learn more.

“Over the total cost of a new build, the homeowner would pay approximately half a per cent extra to upgrade to wool.  It’s more affordable than what’s portrayed in the market, especially when you take into account all the benefits.  We have a truly sustainable product that will perform for the life of the building and beyond.”

But quality insulation that will last a lifetime also requires a quality installation.  Any gaps or compression will negate the efficacy of the product, wool or otherwise.

Brad says Terra Lana prides themselves on their craftsmanship when it comes to installation, “because it does take a level of precision to install insulation properly and the product will only perform as well as it’s installed.”

During the installation process, the safety of the installers is also protected, because the product is safe to touch and hypoallergenic.

Additionally, the toxic dust associated with some other types of insulation doesn’t exist with Terra Lana.  This means it enhances air quality and makes it a healthier alternative all round for both the homeowner and the person installing it.

If consumers want to protect their own health as well as their builder’s and get a product that lasts a lifetime they need to specify wool insulation to their architect and builder because the default setting is to specify the cheapest product available, says Brad.  

But despite the slightly higher initial outlay for wool insulation, the cost to the consumer can come in other ways when they buy lower grade product, says Brad, such as to their health, or when they need to replace the sub-standard insulation.

“It’s ultimately more economical because quality insulation will reduce the cost to heat and cool your home by keeping the atmosphere drier for the life of the building.”  

Terra Lana Insulation is Declare certified (non-toxic ingredients) and is available in blankets, rolls and segments to ensure the best product is supplied for each area of the home. Custom widths and lengths can also be made on request.

Want to know more about wool insulation? Be sure to visit Terra Lana on ArchiPro today or call their Christchurch office to learn more.

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