Roofing Materials
Total Page:16
File Type:pdf, Size:1020Kb
Document: tiles coverv12.pdf;Page: 1;Trim size: (328.40 x 241.40 mm);Plate: Composite;Date: 26 Mar, 2007 08:34:51;created by Driftgate Press Speedflow �C�����������ONSERVATION �B���OAR�D ��������� ��������� ������ ����� ������������� ��������� ������� ��������� ��������� ���� �� ���� �� ����������� ������� ������ Document: 45567 New ps2 3&7.pdf;Page: 1;Trim size: (327.01 x 239.99 mm);Plate: Composite;Date: 15 Mar, 2007 10:39:46;created by Driftgate Press Speedflow 2 Chilterns Roofing Materials Chilterns Roofing Materials Supplementary Technical Note - Adopted Version Particular thanks are also due to the following: All photographs are by Dr. James Moir unless Acknowledgements otherwise acknowledged. All drawings are by Tim Amsden (SMT Conservation) Simon Jones and Glyn Kuhn. This Technical Note has been published by the Martin Andrew (Wycombe District Council) Chilterns Conservation Board which would like to George Crutcher (Formerly of South Bedfordshire The Chilterns Conservation Board wishes to District Council) acknowledge the generous grant aid made express its thanks to Dr. James Moir who has Nick Doggett (CGMS Consulting) available by the following organisations towards researched and written this Note. Roger Evans (Former Buckinghamshire Historic the cost of producing this Note: Buildings Officer) Jimmy Goodchild (Goodchild Roofing) The Countryside Agency (now Natural England) Thanks must also go to members of the Advisory Simon Jones (Simon Jones, Architect) South East England Development Agency, Group who have given extensive help and advice Glyn Kuhn (Polar Design) Chiltern District Council, Jim Matthews (HG Matthews) South Oxfordshire District Council, voluntarily. Catherine Murray (Chiltern District Council) Dacorum Borough Council, Ian Pritchett (IJP Building Conservation Ltd.) South Bedfordshire District Council, Derek Rogers (Architect) Wycombe District Council, Bovingdon Brickworks Ltd, Thanks also to Colin White, Chilterns Dunton Brothers and Conservation Board Planning Officer for his help H G Matthews. in organising the Group and input into revisions to the text. Chilterns Buildings Design Guide - Chilterns Roofing Materials, Supplementary Technical Note c Published March 2007 No part of this publication may be reproduced or transmitted in any form without the prior permission of the Chilterns Conservation Board. ISBN 0-9545242-4-1 Cottages (Penn) Document: 45567 New p3.pdf;Page: 1;Trim size: (327.01 x 239.99 mm);Plate: Composite;Date: 15 Mar, 2007 14:16:30;created by Driftgate Press Speedflow Chilterns Roofing Materials 3 Chilterns Roofing Materials Supplementary Technical Note - Adopted Version Foreword Contents The Chilterns Conservation Board recognises the as other appropriate materials, in new Chapter 1 importance of good design in the built heritage of developments in the Chilterns. The methods of Introduction 4 the Chilterns Area of Outstanding Natural Beauty tile use have changed little over the centuries. Chapter 2 (AONB). We published the Chilterns Buildings They came in a variety of shapes sizes and Background 8 Design Guide in 1999 and have supplemented it colours and have been used on every type of Evolution of the Roof 9 Historical Manufacture and Use of Tiles 12 with Technical Notes on Brick and Flint. building. Tiles are, once again, being made in the Other Roofing Materials 14 Chilterns in the traditional manner for the first The intention of these publications is to make Chapter 3 time for 50 years. 16 property owners, builders and architects aware of Designing the Roof An Inspirational Inheritance 16 the need to protect the distinctive character of our We only need to see a line of traditional Preliminaries 16 buildings and settlements. buildings in a Chilterns town or village to Massing and Geometry 19 recognise the harmony of brick and flint walls Roof and Building Performance 21 The Board wishes to encourage the use of Material Choice and Combinations 22 crowned with tiles of local manufacture. appropriate materials for roofs and has, therefore, Material Selection and Specification 26 prepared this Technical Note. Chapter 4 Detailing the Roof 29 The previous notes have encouraged the use of Openings 29 sustainable local resources. This one follows the Sir John Johnson Eaves, Verges and Ridges 30 Valleys, Hips and Abutments 34 same pattern in promoting the use of tiles, as well Chairman, Chilterns Conservation Board Rainwater Goods 37 March 2007 Chimneys, Flues and Vent Pipes 38 School Complex (Ibstone) Chapter 5 Sourcing and Selection 39 Selecting a Contractor 39 Obtaining Roofing Materials 39 Chapter 6 Repairs, Alterations and Extensions 40 Repairs and Maintenance 40 Conversions 43 Extensions and Alterations 44 Chapter 7 Designing for Sustainability 45 Glossary 47 Bibliography 49 Further Advice 49 Document: 45567.pdf;Page: 3;Trim size: (327.01 x 239.99 mm);Plate: Composite;Date: 12 Mar, 2007 07:51:38;created by Driftgate Press Speedflow 4 Chapter 1 : Introduction Chilterns Roofing Materials Supplementary Technical Note - Adopted Version Chapter 1 Introduction 1.2 Many roof types and styles can be found in 1.3 The Objectives of the guidance are to: the Chilterns, and thatch, slate, corrugated iron, lead and wooden shingles cover a proportion of 1.1 Roofing materials have a major influence upon � Raise awareness of the quality of the the built environment of the Chilterns and the the region’s older buildings. However, plain clay traditional built character of the Chilterns character of its individual buildings. The first tiles are universally predominant and their textural AONB by highlighting the importance of impression approaching a village or town is often richness and distinctive dark orange or red colour local styles and forms of roofing the view of its roofs seen from a distance. The leave a lasting visual impression. Such tiles have an unbroken history since the early medieval hilly terrain allows views over buildings and � Create respect for the historical diversity of creates roofscapes which would not otherwise be period and this long usage has invested the roofs in the region seen. Roofs should, therefore, be designed to the region’s buildings with a particularly strong and consistent character and identity. That identity highest standards and clad in attractive materials � Re-establish traditional character in areas of which make a positive contribution to the has nevertheless been eroded by the appearance the AONB where it has been damaged or character of the area. of new roofing materials and forms; some have a eroded place but others are used in inappropriate contexts. � Protect the distinctive character of the built environment by encouraging good repair practices � Foster an interest in reviving traditional materials and skills in the region so as to encourage a more sustainable approach to roofing � Promote the appropriate use of roofing materials in new developments so as to create respect for the traditional built character of the AONB � Encourage roofing of the highest standard to inspire high quality design in new developments Clay roofs characterise this village (Little Missenden) (Image c GeoPerspectives.com) Document: 45567.pdf;Page: 4;Trim size: (327.01 x 239.99 mm);Plate: Composite;Date: 12 Mar, 2007 07:51:40;created by Driftgate Press Speedflow Chapter 1 : Introduction 5 Chilterns Roofing Materials Supplementary Technical Note - Adopted Version 1.4 Much of the Chiltern Hills is designated an 1.6 All new building work, including extensions architects; designers; developers; builders; Area of Outstanding Natural Beauty (AONB). The and conversions, will require careful consideration planning authorities; parish councils and any Chilterns Conservation Board is responsible for of the roof design and its covering; repairs to organisation or individual with an interest in the conserving and enhancing the natural beauty of existing buildings may also involve changing the built environment of the Chilterns AONB. the AONB, increasing the understanding and roofing material or improving its performance. This enjoyment of its special qualities, and fostering note aims to provide guidance in these areas but the economic and social well-being of local is not a comprehensive historical and design M1 communities, within the AONB. It may offer statement. It illustrates a potential for excellence, assistance to local authorities with the aim of diversity and flexibility in new design whilst still Hitchin ensuring their policies and practices are co- respecting the distinctive qualities of the area. Dunstable ordinated and consistent with guidance that has Luton been adopted. 1.7 This guidance is intended to be used by all involved in the development process: owners; 1.5 To this end, the Chilterns Buildings Design Guide was published in 1999 to provide Tring Map 1 Aylesbury guidance on how to achieve high quality The Chilterns Area of Wendover design in new developments. The Guide Berkhamsted Hemel Outstanding Natural provides a framework for protecting and Hempstead Beauty Princes St Albans enhancing the identity of the traditional built Risborough Chesham character of the Chilterns, which has been steadily eroded by the use of standardised M40 Amersham designs and non-local materials. This series of Technical Notes is intended to supplement the River Thames High Chilterns Building Design Guide by providing Wycombe Beaconsfield additional guidance on the appropriate use of Wallingford materials. Marlow (visit www.chilternsaonb.org the Chilterns AONB website for details