SELECTION CRITERIA FOR CEMENT BASED ADHESIVES
Saturday, 5th November 2011
PAM Mini Auditorium, PAM Sabah Chapter
The seminar was generously sponsored by MG Ceramics & Homeware Sdn Bhd, and the speaker is Mr. Felix Quek, Technical Service Director of ad2 Building Solutions Sdn Bhd. Felix has more than 30 years experience in the building industry providing solutions, materials and technical support of ceramic tiles, stones and waterproofing. Some of the major projects under Felix were the Singapore Changi Airport Passenger Buildings Terminal 1, 2 and 3, and the KLCC Suria Shopping Centre.
Tiling failures have become more common these days, especially the buckling, delamination (debonding) of tiles from the substrate, cracked tiles etc. It is happening not only in Malaysia, but across Asia Pacific.
There are many factors for tiling failure, including the following:
i. Insufficient gap/ expansion joint between tiles
(especially large sized tiles),
ii. Insufficient contact between adhesive and tile surface
(Min 85%, 95% preferred).
iii. Incorrect use of adhesive (e.g. should not mix with cement, do not prolong open time),
iv. Incorrect types of adhesive (e.g. wrong adhesives for structure subject to movement),
v. Incorrect application of adhesive
(e.g. Should apply on the substrate instead of back buttering),
vi. Incorrect steel trowel (should use small notch for small tiles, large notch for large tiles),
vii. Water pressure from penetration below the substrate (lack of waterproofing),
viii. Incorrect tile grout and incorrect scrub.
Felix also briefed on the common use of Cement Based Adhesive (CBA):
i. 1 Component :
CBA only (typical installation of tiles on floors and walls).
ii. 2 Component :
CBA + latex. (for improved performance on areas subject to movement).
He emphasized on getting the right adhesive for the job, and reminded all on the age old maxim that “You Pay One Cent, You get One Cent Product”!
Felix may be contacted: 012-9107182, 03-8061 9335 or email to: [email protected]
Reported by Ar. Mok Juang Yu