Condo Media - March 2013 - (Page 14)

by Jack Carr, P.E., RS, LEED-AP C A I R e g i o n a l N e w s MAINE Let’s Caulk Understanding Materials and Standards P erhaps by now the March wind-driven weather has convinced the board it has water infiltration problems, not to mention air infiltration issues. Interior gypsum board ceilings and walls are starting to stain, floors are beginning to get wet and warp and unit owners are complaining of mold formation. Often the answer is not façade re-siding or a new roof surface, but rather a need for new caulk. The best waterproofing materials in any building do not depend on adhesive properties. These materials are impermeable, they are shingled or overlaid and they depend on gravity and drip edges. But adhesion does have a place in creating a weather-resistant building envelope. Properly selected quality caulks and sealants are needed in key locations such as around doors and windows, roof penetrations, the boundary between dissimilar materials, siding corner joints, etc. The problem is caulks and sealants tend to have useful lives significantly shorter than the materials they are applied to and there are too many caulks and sealants to choose. So let’s talk about caulk. Let’s take the mystery out of which type of caulk to use for each of the many applications found in any building. Certainly the board or building committee can depend on their engineer or architect or contractor to provide good advice on caulk selection or methods of installation, but having a basic un14 Condo Media • March 2013 derstanding of caulking will give the process a better chance for success. Options and Applications The first questions to resolve about each caulking project are its longevity needs, flexibility of the joint, cure time available and ease of clean up. These issues are further complicated by the many different types of construction materials used today, likely weather conditions, whether this is a new caulking application or a re-caulking application and the future application of paint. Therefore, let us first consider the properties of the typical caulks selected in condo projects: Acrylic latex: This is sometimes referred to as “elastomeric caulk” and is the most widely used and easiest caulk to apply for both interior and exterior projects. It has more elasticity than straight latex caulk, which is more suitable for interior work. Both can be painted but are not as flexible in wide temperature ranges as the high-performance caulks and they must be applied in ambient temperatures of more than 40 degrees Fahrenheit. They should never fill spaces greater than one quarter of an inch and have a useful life of 10 years. These caulks are easy to clean up as they are water based. Butyl: This rubber-based caulk has been available for a long time and is still very affordable. Its stringy nature does not make it suitable for a clean, finished appearance, but it has good adhesion characteristics and is very water resistant, making it a good applicant for roof component repairs, walkways and exterior joints with lives of up to 10 years. Butyl should not come in contact with modified bitumen flashing tapes or rubber roof membranes.

Table of Contents for the Digital Edition of Condo Media - March 2013

Condo Media - March 2013
Contents
From the CED’s Desk
Editorial Board
CAI News
CAI Regional News
Asked & Answered
Homeowner’s Corner
Finance
Maintenance
Pests
Vendor Spotlight
Landscaping
Industry Perspective
Self-Managed Association Boards
2013 CAI-NE Spring/Summer Service Directory
Classified Service Directory
Advertisers Index

Condo Media - March 2013

http://www.nxtbook.com/nxtbooks/mcneill/condomedia_202003
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_202002
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_202001
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201912
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201911
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201911_v2
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201910
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201909
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201908
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201907
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201906
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201905
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201904
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201903
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201902
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201901
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201812
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201811
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201810
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201809
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201808
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201807
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201806
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201805
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201804
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201803
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201802
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201801
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201712
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201711
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201710
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201709
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201708
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201707
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201706
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201705
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201704
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201703
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201702
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201701
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201612
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201611
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201610
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201609
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201608
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201607
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201606
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201605
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201604
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201603
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201602
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201601
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201512
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201511
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201510
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201509
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201508
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201507
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201506
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201505
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201504
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201503
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201502
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201501
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201412
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201411
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201410
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201409
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201408
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201407
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201406
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201405
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201404
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201403
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201402
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201401
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201312
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201311
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201310
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201309
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201308
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201307
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201306
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201305
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201304
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201303
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201302
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201301
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201212
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201211
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201210
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201209
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201208
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201207
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201206
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201205
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201204
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201203
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201202
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201201
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201112
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201111
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201110
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201109
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201108
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201107
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201106
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201105
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201104
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201103
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201102
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201101
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201012
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201011
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201010
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201009
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201008
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201007
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201006
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201005
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_200904
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201003
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201002
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_201001
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_200912
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_200911
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_200910
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_200909
http://www.nxtbook.com/nxtbooks/mcneill/condomedia_200908
http://www.nxtbookMEDIA.com