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Design Specification

Innovation Challenge | WoodBUILD Podcast with Rob Thomas and Matt Stevenson

September 2, 2021 by admin

Podcast

Rob Thomas and Matt Stevenson are two innovators with a passion for working with timber in all its forms. In this podcast, recorded earlier this year, they join David Hedges for a conversation about why we innovate, collaboration and partnership, ingredients for and tests of success, the curse of the pilot, the role of Government and regulation and a lot more besides. Rob and Matt are keen to work with other like minded people and they offer an open invitation to listeners to get in touch if they have an idea they want to explore.

Guests

Matt Stevenson
Rob Thomas
Contact Matt via email: matt@ecosystemstech.com Contact Rob via email: rob@hiraetharchitecture.co.uk

 

Filed Under: Manufacturing, Podcast, Resources Tagged With: Construction, Design Specification, Podcast

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

Wooden Windows-Specification guidance for timber windows

January 28, 2021 by admin

Windows provide an outlook on the world. They help set the tone and character for a building and the area in which it stands. Windows define natural lighting levels and thermal comfort essential for the wellbeing of residents. They offer sound protection and keep homes safe from intrusion. Windows are an essential part of the building fabric and as such contribute to a development’s overall energy performance.
Modern factory-finished timber windows have a better environmental performance than any other window material. They have a longer service life and lower whole life costs than uPVC windows. Wooden windows can be repaired and recoated throughout their lifetime and are the best option for achieving zero carbon buildings. They can be sourced from local manufacturers using home-grown timber and support economic recovery in Wales.
The multiple benefits wooden windows deliver over their life-span in terms of maintenance, durability, embodied carbon, and other social and environmental aspects make them excellent value for money.
This document provides information for specifiers and procurement specialists working on social housing projects. It is designed to help with the specification of low-carbon timber windows in a social housing context. It provides performance criteria and indicates what needs to be considered to achieve these in practice. Windows are an essential element of the building fabric and should not be discussed in isolation. They should be considered very early in the design process when deciding what build system to use.
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Filed Under: Building Elements, Building Performance, Design & Specification, Home-Grown Homes, Housing, Resources, Windows Tagged With: Building Elements, Building Performance, Design Specification, Guidance, Home Grown Homes, Maintenance, Windows

Building Performance Evaluation Guide

January 21, 2021 by admin

New homes often fail to meet low-energy targets, and to satisfy residents with fundamental issues such as ease of use, summer comfort and energy costs. There is little Building Performance Evaluation (BPE) happening routinely on projects to close the performance gap. A step change is needed to transition to net zero carbon while making our homes comfortable, healthy and enjoyable.
This guidance is aimed at housing clients, and anyone interested in Building Performance Evaluation (BPE)  who want to evaluate and improve the performance of homes.
Its purpose is to provide an introduction to applying BPE in practice on projects, with:

  • Information for clients and project managers to gain an overview of the benefits of BPE, what the main BPE techniques can do, how to procure it, and the main activities to plan throughout a project from design to occupancy
  • Guidance on the main BPE techniques available
  • Tools for day-to-day use on projects, complemented by more detailed guidance, examples and references.

This guidance recommends a “core” BPE scope for clients and project teams wanting to understand and improve the performance of their homes. This provides a holistic look at performance, including people, the indoor environment, fabric performance, energy use and water use. It highlights how BPE techniques can work together, and the interactions between energy performance, people, and the indoor environment. It limits the involvement of experts and expensive equipment. Instead, the aim is to embed building performance throughout the project stages and empower project teams to deliver high performance.
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Cover image: © shutterstock.com / NDAB Creativity

Filed Under: Building Performance, Construction, Design & Specification, Home-Grown Homes, Housing, Resources Tagged With: Building Performance, Construction, Design Specification, Guidance, Home Grown Homes

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.
DOWNLOAD GUIDANCE


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

Mandatory quality standards for new homes – WKW response

November 2, 2020 by admin

Woodknowledge Wales have responded to a Welsh Government consultation on “Mandatory quality standards for new homes” which closed on 31 October 2020.
Key targets Woodknowledge Wales propose are need are:

  • A target for upfront carbon from April 2023.  We propose 300kgCO2e/m2.
  • A target for embodied carbon from April 2023.  We propose 400kgCO2e/m2.
  • A space heating demand target by April 2023.  We propose 15 kWh/m2/yr.
  • A total energy use intensity target by April 2023.  We propose 35 kWh/m2/yr.

Read our full response here.

Filed Under: Housing, Manufacturing, Policy Briefing, Resources Tagged With: Building Performance, Design Specification, Policy Briefing, Whole Life Carbon

Google Map highlights exemplar timber housing projects in Wales

October 31, 2020 by admin

Explore information on construction, innovative products, use of home-grown timber and Welsh manufacturing, carbon impact and building performance in innovative timber housing projects across Wales.
This map showcases the exemplar timber housing projects Woodknowledge Wales has worked on in some way over the past few years. The Exemplar Housing Project layer contains basic project information. The Whole Life Carbon layer contains data on the carbon impact of those projects for which we have undertaken analyses. The Building Performance layer contains projects where we have undertaken some experimentation into different building performance methods. The Forest Nation Attribute layer attempts to capture the timber story such as the use of innovative products, the use of home-grown timber and the use of Welsh manufacturing.
This map represents our progress to date. We will continue to record the progress of our timber development agenda as well as the progress of Welsh housing in meeting the challenge of Net Zero whole Life carbon over the coming years.
VIEW MAP ON GOOGLE →

Filed Under: Case Study, Forestry, Home-Grown Homes, Housing, Joinery, Manufacturing, Processing, Resources, Timber Systems Tagged With: Building Performance, carbon, Case Study, Construction, Design Specification, Home Grown Homes, Processing, timber construction

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