Wood Roofs7.3 Weathering/Anomalies178

HAAG CERT I F I ED INSPECTOR PROGRAM WORKBOOK • RES IDENT IAL ROOFS ED IT IONW

OO

D

RO

OF

S

Joint erosion.

Water-eroded holes diagram (above), and example of condition (below).

Vermin damage.

Rodent damage (above), and squirrels damaged this roof, possibly digging for seeds between or under the shakes (below).

COPYRIGHTED MATERIAL

©Copyright 2014 by Haag Engineering Co. All rights reserved. No part of this image may be reproduced, stored in a retrieval system, or transmitted in any form by any means (electronic, mechanical, photocopying, recording, or otherwise) without prior written permission from Haag Engineering Co., 4949 W. Royal Lane, Irving, TX 75063.

COPYRIGHTED MATERIALWood Roofs

7.3 Weathering/Anomalies 179

HAAG CERT I F I ED INSPECTOR PROGRAM WORKBOOK • RES IDENT IAL ROOFS ED IT IONW

OO

D

RO

OF

S

Butt rot.

Rotted wood below pine needles on roof.

Footfall damaged butt rot.

Cupping photo and diagram. Cupping (and curling) is caused by the natural grain of the wood responding to wetting and drying.

Curling.

COPYRIGHTED MATERIAL

©Copyright 2014 by Haag Engineering Co. All rights reserved. No part of this image may be reproduced, stored in a retrieval system, or transmitted in any form by any means (electronic, mechanical, photocopying, recording, or otherwise) without prior written permission from Haag Engineering Co., 4949 W. Royal Lane, Irving, TX 75063.

COPYRIGHTED MATERIAL

COPYRIGHTED MATERIAL COPYRIGHTED MATERIAL

©Copyright 2014 by Haag Engineering Co. All rights reserved. No part of this image may be reproduced, stored in a retrieval system, or transmitted in any form by any means (electronic, mechanical, photocopying, recording, or otherwise) without prior written permission from Haag Engineering Co., 4949 W. Royal Lane, Irving, TX 75063.

COPYRIGHTED MATERIAL COPYRIGHTED MATERIAL