Avoid Gib stopping disasters
Auckland Gib stopper disasters caused by poor workmanship
To help homeowners we have published this from our training manual for gib stopping for interior plasterers and gib stopper supervisors, based on ASNZ 25809:2007 for Plasterboard Installation and according to Winstone gib board recommendations.
An experienced Gib stopper (interior plasterer) is no guarantee that things are done correctly the only guarantee is correct gib stopping procedure backed by a company guarantee.
We note that most of these items are not currently covered under Auckland building inspections.
|Time to appear||Visual Failure||Cause||Remedy|
|Up to 12 months after painting||Popped screws on visible surfaces from break in paper.||Unsuitable mechanical fixing tool. Or incorrect adjustment of depth.||
|Incorrect or inaccurate glue patterns|
|Gib stoppers failing to double check screw fixing before plastering|
|Several years after completion||Mould growing in plaster||Use of milk based additive in plastering||
|Before or after painting is completed||Joins clearly visible under certain lighting conditionsoron large surfaces||Using vertical sheet layouts or not using sheet sizes for minimal joins||
|Ceiling joins across the path of light|
|Failing to do correct light check procedure|
|Incorrect recommendations on finish type|
|In sufficient stopping skill level|
|Up to 36 month after completion||Plaster falling of the wall or ceiling||Incorrect surface preparation||
|Over-dilution of compounds or low adhesion plaster|
|Before or after painting is completed||Bumps in sheets||Plasterboard forced into place||
|Incorrect screw sequence|
|Failing to fit recommended expansion gap|
|Before or after paint is applied||Hollow joins visible under light||Excessive / delayed shrinking||
|Under filling or failure to check shrinking|
|In sufficient dry time for the conditions|
|0-12 month after completion||Crease or crack on ceiling / wall joins or corners||Incorrect back blocking of ceiling joins||
|Backing or taping plaster too thin|
|Applying first coats too soon after tape has been applied|
|Failure to use paper tape|
|Failing to block gaps correctly|
*Timber shrinkage and movement is a mayor cause of peaking, popping and cracking, details are excluded from this document.
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