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StrawBoard

straw board

Straw board is made from waste straw with usually about 2% MDI adhesive binder. In the past the reputation of straw board has suffered mainly due to people trying to skimp on the thickness, a bit like with hardboard. It can make for very economical internal surface linings with good thermal and […]

Cement / woodwool boards

novolit magnesite / woodwool board

There are various types of cement/wood wool board combinations with Heraklith (which uses a magnesite cement) being one of the better known makes in the UK. Although the cement component is a cause of embodied energythe total amount of energy it takes to make a material (or a building). […]

Ziegel blocks

a Ziegel block

Ziegel hollow core clay blocks are commonly used in many EU countries and are beginning to make inroads here. While the sq.m. cost of the materials is similar to conventional walling in the UK there are several major advantages:

The speed of building is greatly increased There is very little water […]

Wall construction

see also Brick Cob Concrete blocks Hemp / Lime Insulating concrete forms Rammed Earth Solid timber Steel frame Stonework Straw Bale Ziegel blocks What’s the most eco-friendly wall?

Well there are several angles on that. Some of the most important aspects of walls are their insulation values, their air-tightnessA measure of how leaky […]

Chewton Mendip

A very interesting terrace of three houses, on a curved road junction, has recently been completed in this Somerset village.

Some of the main features of the design are:

Very high insulation levels provided by insulating concrete forms (ICF) with added exterior face insulation Structural insulated panel (SIP) roofs Eco-slab ground floors and upper […]

Insulating concrete forms

Insulated concrete forms by Logix

There are several systems on the market which allow you to cast concrete using clip together poystyrene forms. The two leafs of insulation are connected together by plastic ties and the units are clipped together and then filled with concrete, usually by pumping, so the whole process is very […]

Concrete blocks

Concrete blocks, though used widely, have the drawback of being very high in embodied energythe total amount of energy it takes to make a material (or a building). See more on embodied energy due to the cement they contain. They may also produce a wall which is too thick . Achieving PassivhausSee more on the […]

Brick

The green credentials for brick walls vary, with three main factors:

the embodied energythe total amount of energy it takes to make a material (or a building). See more on embodied energy depends on what sort of bricks are used the environmental policy of the manufacturer the effect on the wall design

The embodied energy […]

Cob

Cob building, which uses earth, generally subsoil, mixed with straw and water and possibly clay and sand to construct walls is one of the most sustainable ways of building in terms of materials and embodied energythe total amount of energy it takes to make a material (or a building). See more on embodied energy. […]

Hemp / Lime

Hempcrete is now an established building material in the UK. This is the re:centre at the University of Bradford

Hemp lime walls are a relatively new construction method to the UK although they have been around in mainland Europe for a couple of decades. Hempcrete, as it is generically known is a mixture of […]