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Woodknowledge Wales

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Guidance

Wood Fibre Insulation – Specification Guidance

June 1, 2021 by admin

A building’s thermal performance is now as important an aspect of the building’s design and construction as its structure. Energy prices and climate change are often cited as the principal reasons for the increased energy and CO2 reduction standards required of our built environment. Less known is the fact that insulation can also play a major role in our health, safety, comfort and wellbeing.
When higher levels of thermal performance are required, this has a significant impact on building physics and other dynamic elements of a building’s performance.
Woodfibre insulation has a number of properties that enables it to provide a multifunctional role within the construction of a home. When specified and installed correctly, woodfibre provides protection against summertime overheating, enhanced acoustic performance and moisture control. The latter provides a building fabric with additional insurance against potential moisture problems that could otherwise undermine the integrity of the building and the health of the occupants.
Woodfibre is highly sustainable, locking up considerably more CO2 than is produced in manufacture. It can therefore play an essential part of a strategy for mitigating climate change.
This document provides information for specifiers and procurement specialists working on social housing projects. It is designed to help with the specification of wood fibre insulation within a social housing context. It provides performance criteria and indicates what needs to be considered when specifying woodfibre insulation.
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Filed Under: Building Elements, Building Performance, Design & Specification, Guidance, Home-Grown Homes, Insulation, New-Build, Resources, Retrofit Tagged With: Building Elements, Building Performance, Design Specification, Guidance

Zero Carbon Homes—Zero Carbon Timber Solutions for Wales

February 16, 2021 by admin

What is the zero carbon timber housing solution for Wales?
This document proposes a range of timber build solutions. Results are based on the analysis of an appropriate and future proofed definition for ‘zero carbon’, followed by design and calculation to develop an understanding of the quantifiable factors of embodied and operational carbon. Using a fabric first approach, an examination of existing and alternative timber construction methods, materials and systems offers a range of developed timber solutions that are capable of meeting the target fabric specification. These include information on whole carbon emission and offsetting calculations for a range of key typologies demonstrating the routes to Zero.
The detailed report presents findings from the Home-Grown Homes Project including actions for further detailed design, training and skills, technical development and testing, design and modelling tools. These may be relevant for designers, manufacturers, specifiers and clients.
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Filed Under: Construction, Design & Specification, Guidance, Home-Grown Homes, Housing, Manufacturing, New-Build, Resources, Timber Systems, Whole Life Carbon Tagged With: Building Elements, Building Performance, carbon, Design Specification, Home Grown Homes, Structural Timber, timber construction, Whole Life Carbon

More and Better Home-Grown Timber—The financial case for existing landowners to plant woodland

January 25, 2021 by admin

From the TV presenters of Countryfile to the ever-escalating claims of political parties in the last UK elections, it seems everyone wants to plant more trees. Reasons vary from carbon capture, amenity, and biodiversity to production of usable timber, as do levels of ambition.
Amongst the most widely quoted targets, The Committee on Climate Change (CCC) say that UK needs 30K Ha of new woodland a year to 2050 as part of a suite of land use changes to meet the UKs commitment to become Zero Carbon. This afforestation is predicted to account for the largest share of the forecast £39 Bn cost, the majority of that being spent on land acquisition. This presumes that either we expand the public estate or encourage land acquisition by external investors.
Experience from solar and wind farms suggests that this will be expensive, slow, and unpopular with some existing landowners, particularly farmers. Nonetheless there is considerable pressure on farmers from Brexit and existing financial challenges particularly of upland farming are severe in Wales.
Based upon the above, our approach is to solve two problems together. Woodland creation for a range of benefits, providing the means for farm transformation, while avoiding the expense and social disruption of land acquisition.
Promising lower costs of delivered woodland and a wide range of associated benefits, the approach has much to recommend it, subject to its financial viability.
This report reviews opportunities and challenges through the lens of financial viability.
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Filed Under: Afforestation, Forestry, Guidance, Home-Grown Homes, Resources, Welsh Timber Tagged With: Afforestation, carbon, forestry, Guidance, Home Grown Homes, investment, offsetting

Carbon Storage Contract

January 20, 2021 by admin


The future building stock is the most effective and most immediate opportunity for carbon reduction and long-term carbon storage. By creating a new economic model for monetising the carbon reduction and storage capacity of the future building stock, the use and specification of low-carbon and carbon-storing materials could be incentivised.
Woodknowledge Wales have been working with providers of a voluntary carbon marketplace that pairs business buyers with building projects that demonstrate meaningful carbon reduction and carbon storage (30+ years). To demonstrate the viability and potential economic incentive, we have developed this exemplar carbon storage contract based on a recent social housing development in Llanbedr, Wales.
The goals are:

  • To change the financial equitation for developers, architects, engineers, and builders to use more low-carbon and carbon storing building materials.
  • To enable businesses to achieve their carbon reduction goals by purchasing reliable, verifiable, and asset-backed carbon reduction and storage contracts (CRSCs).

The building industry has adopted EN 15978 as the platinum standard for quantifying CO2 avoidance and CO2 storage which allows this mechanism to work internationally.

For further information, please get in touch: info@woodknowledge.wales.


Filed Under: Case Study, Guidance, Home-Grown Homes, Housing, Procurement, Resources, Whole Life Carbon Tagged With: carbon, Case Study, Guidance, Home Grown Homes, investment, offsetting, Whole Life Carbon

Capturing Carbon: Investing in Woodlands—An Options Analysis for Welsh Housing Associations

January 19, 2021 by admin

New woodland creation is one of the most cost-effective ways of reducing carbon emissions and offsetting our nation’s carbon footprint. The combination of an undersupply of our own timber in Wales and the ambitions of Wales and the Welsh Government to create new woodlands means that an organisation interested in creating new woodlands can play a pivoting role in combating climate change.
Woodlands have proven an attractive alternative asset for long-term investors, as they provide the opportunity to benefit from the value of a naturally growing commodity and the security of ownership of the underlying land. Woodlands have multiple benefits and these can be reaped in a way that makes a financial return for the investors.
A very new and interesting market is the trading of carbon. The sale of carbon credits allows landowners who create new woodlands to increase their financial returns by selling both timber and non-timber products. Government forecasts suggest these values could rise five-fold over a 40-year period which will have a significant impact on the profitability of a woodland creation project.
This document explores three investment options for Housing Associations

  1. Creating woodland by acquiring land.
  2. Creating new woodland through novel collaboration with the public sector e.g. NRW, Local Authorities etc.
  3. Acquiring existing woodland.

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Filed Under: Forestry, Guidance, Home-Grown Homes, Housing, Procurement, Resources, Whole Life Carbon Tagged With: carbon, Case Study, forestry, Guidance, Home Grown Homes, investment, offsetting, Whole Life Carbon

Timber Cladding—Specification Guidance for Social Housing

January 19, 2021 by admin


Timber cladding has become increasingly popular, mainly for its sustainability credentials and low environmental impact: It has a low carbon footprint as it requires less energy to produce than any other construction material and helps lock carbon into the building fabric. It is made from renewable material – wood – and can be reused, recycled or used as fuel at the end of its service life. Timber cladding is widely available from sustainably managed forests and can be sourced locally.
With correct detailing, proper installation and appropriate materials, timber cladding will provide a long lasting decorative and functional façade to any type of development, new build or existing stock.
This document provides information for specifiers and procurement specialists working on social housing projects. It is designed to help with the strategic selection of timber cladding as an external rainscreen in a social housing context. It provides performance criteria for specifying timber cladding and indicates what needs to be considered to achieve these in practice. The document highlights performance benefits across a range of intended design outcomes and is designed to help ensure that timber cladding is used appropriately. Timber cladding should not be viewed in isolation and should be considered very early on in the design process when specifying details and deciding on what build system to use.
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Filed Under: Building Elements, Cladding, Design & Specification, Guidance, Home-Grown Homes, Housing, New-Build, Resources, Retrofit Tagged With: Building Elements, Cladding, Design Specification, Guidance, Home Grown Homes, Maintenance

Making the Right Choices—A Guide to Improving the Build Quality of New Build Timber Frame Social Housing

January 19, 2021 by admin


Making the right decisions for the benefit of a building’s long term performance and user experience can be compromised by cost, lack of experience, and poor understanding of timber frame construction.
This guide aims to highlight some of the key points to consider along the pathway of designing, constructing and maintaining timber frame housing.
These points have been compiled reflecting on experience gained by delivering BMTRADA’s frameCHECK on-site quality consultancy service.
By helping the reader understand more about the consequences of some of the decisions to be made during construction.
This report has been compiled as part of the Home-Grown Homes Project, which looked into the way that timber is specified and used in construction, with its focus being on manufacturing. The aim of this document is to help all those involved with timber frame construction to deliver better performing and longer lasting homes.
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Filed Under: Building Performance, Construction, Design & Specification, Guidance, Home-Grown Homes, Housing, Maintenance, Manufacturing, New-Build, Resources, Timber Frame, Timber Systems Tagged With: Construction, Design Specification, Guidance, Home Grown Homes, Structural Timber, timber construction

Embodied Carbon Guidance for Welsh Social Housing Developers, their design teams, contractors and suppliers

December 11, 2020 by admin

This guidance has been written for those wanting to both increase their knowledge of Embodied Carbon in the housing sector and to understand how to reduce it. The target audience encompasses key stakeholders within Welsh social housing organisations including development and asset managers, their design teams, contractors and suppliers.
Clear and authoritative guidance is provided on how to procure and undertake an Embodied Carbon assessment, what benchmarks can be set, tools that can be used and how Embodied Carbon can be reduced. Examples are provided to show how others have tackled Embodied Carbon within their organisations and projects, with a focus on housing. Where relevant, other guidance and useful information is signposted.
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Authors: This guidance has been produced for Woodknowledge Wales on behalf of the Home-Grown Homes project. The document was authored by Jane Anderson of ConstructionLCA Ltd together with Katherine Adams, The Alliance for Sustainable Building Products.
Publication date: December 2020

Filed Under: Construction, Design & Specification, Guidance, Home-Grown Homes, Housing, Manufacturing, New-Build, Procurement, Resources, Whole Life Carbon Tagged With: carbon, Construction, Design Specification, Guidance, Home Grown Homes

Net-Zero targets for Wales

September 30, 2020 by admin

Building on the work of the UKGBC and LETI, the Home-Grown Homes Project have developed a graphical net-zero guide with a set of targets & principles that we believe are achievable within a Welsh context. The guide is aimed at helping developers, designers and manufacturers achieve net-zero whole life carbon. This means tackling upfront carbon, energy demand, use of renewables and embodied carbon in order to reduce the overall emissions associated with any proposed development.

Download in pdf

Later this year we will publish a set of additional supporting guides that run alongside this graphic, describing, for example how to measure and reduce embodied carbon, a zero-carbon design guide using typical Welsh timber frame systems, and a guide to support building performance evaluation to address the energy performance gap.

DOWNLOAD GRAPH IN PDF


Filed Under: Building Performance, Guidance, Home-Grown Homes, Housing, Manufacturing, Resources, Whole Life Carbon Tagged With: Building Performance, Guidance, Home Grown Homes, Whole Life Carbon

Sustainable Construction Timber – Ivor Davies 2016

February 25, 2016 by admin

FC Scotland have released a new publication by Ivor Davies, Sustainable Construction Timber – Sourcing and Specifying Local Timber. This is an invaluable new tool that will help clients understand how to procure homegrown timber.
Download

Filed Under: Construction, Design & Specification, Guidance, Housing, Procurement, Resources, Timber, Timber Systems, Welsh Timber Tagged With: Design Specification, Processing, Structural Timber

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