Advice

November 16, 2016

Psi Values, Thermal Bridging And Wood Fibre Insulation

Psi values (pronounced p’see) are a measurement of the heat loss that occurs at all junctions where non-repeating thermal bridges occur. These can be wall to wall junctions, wall to ground floor/suspended floor, wall to roof, wall to window/door junctions and also in party wall/floor junctions.

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November 16, 2016

Understanding A Building's Thermal Performance Using U-values


The U-value of a building element, such as a wall, roof or floor, is a measure of the thermal transmittance of that element. The lower the U-value, the slower the flow of heat is through that element once it has reached a steady state (meaning the flow of heat through...

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October 18, 2016

Key Considerations When Insulating a Timber Frame Building

Prior to setting up Back to Earth as a material supply company we had Back to Earth the building restoration company. During those years we often used standard materials to insulate roofs, timber framed wall sections or whole timber framed buildings, both new and old, usually with pretty average results...

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October 18, 2016

Lime Vs Cement Based Renders


We often get asked why our renders are lime and not cement based. People query why breathability matters if you’re rendering on to impervious materials and why you'd pay more for no clear benefitWe supply Baumit renders because they are lime based, technically very good and high quality.

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September 29, 2016

Using wood fibre to insulate church roofs and other historical buildings


Over the last few years we’ve had an increasing number of architects involved in the repair and renovation of ecclesiastical buildings, contact us for help with insulating church roofs. More have become aware that foam based insulation boards with low or no vapour permeability can cause problems in the longer term for historical roof timbers.
 

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September 29, 2016

The problem of ventilation and flat roofs


We often speak to architects who struggle to effectively detail flat roof structures, either as part of a pitched roof or as a separate flat roof, because of the issue with ventilation. Generally, flat roof constructions using wood fibre insulation can be constructed without any ventilation so long as an intelligent vapour control membrane is fitted to the interior.

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September 13, 2016

How to install frameless windows into an insulation system

When installing windows, particularly windows with no visible fixed frame such as Velfac windows, it's really important to get the detailing correct. Few manufacturers seem to offer details for awkward junctions such as sill corners which can lead to poor or leaking installations. We regularly get asked how to detail windows when installing our insulation systems so we’ve put together some key points...

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