scope:

Preface

This is the second edition of the CSA A220 Series, Concrete roof tiles. It supersedes the previous edition published in 1991.

CSA A220 Series consists of two Standards: CSA A220.0 and CSA A220.1. CSA A220.0, Performance of concrete roof tiles, specifies requirements for concrete roof tiles and tiling accessories, based on the results of performance tests. It outlines procedures and acceptance criteria for sampling and testing for dimensional tolerances, water absorption, water permeability, freezing and thawing resistance, transverse strength, and material quality.

CSA A220.1, Installation of concrete roof tiles, specifies requirements for the installation of concrete roof tiles and tiling accessories on roofs with slopes of 1:3 and greater. It also provides requirements for the installation of sheathing and the installation and testing of underlayment as well as the related requirements for weather-resistant roofing systems.

These Standards were prepared by the Technical Committee on Concrete Roof Tiles, under the jurisdiction of the Strategic Steering Committee on Concrete and Related Products, and were approved by the Technical Committee. They will be submitted to the Standards Council of Canada for approval as National Standards of Canada.

December 2006

Notes:

(1) Use of the singular does not exclude the plural (and vice versa) when the sense allows.

(2) Although the intended primary application of this Standard is stated in its Scope, it is important to note that it remains the responsibility of the users of the Standard to judge its suitability for their particular purpose.

(3) This publication was developed by consensus, which is defined by CSA Policy governing standardization - Code of good practice for standardization as "substantial agreement. Consensus implies much more than a simple majority, but not necessarily unanimity". It is consistent with this definition that a member may be included in the Technical Committee list and yet not be in full agreement with all clauses of this publication.

(4) CSA Standards are subject to periodic review, and suggestions for their improvement will be referred to the appropriate committee.

(5) All enquiries regarding this Standard, including requests for interpretation, should be addressed to Canadian Standards Association, 5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6. Requests for interpretation should

(a) define the problem, making reference to the specific clause, and, where appropriate, include an illustrative sketch;

(b) provide an explanation of circumstances surrounding the actual field condition; and

(c) be phrased where possible to permit a specific "yes" or "no" answer.

Committee interpretations are processed in accordance with the CSA Directives and guidelines governing standardization and are published in CSA's periodical Info Update, which is available on the CSA Web site at www.csa.ca.