Brick Slip Expansion Gaps, Meaning, Purpose, and Placement
Understanding Brick Slip Expansion Gaps
Brick slip expansion gaps are deliberate spaces left within a brick slip installation to allow for natural movement. These gaps accommodate expansion and contraction caused by temperature changes, moisture variation, and structural movement in the background surface.
Although brick slips are thin and lightweight, they still move along with the substrate they are fixed to. Expansion gaps help prevent cracking, debonding, and stress damage over time.
Purpose of Brick Slip Expansion Gaps
The main purpose of brick slip expansion gaps is to manage movement safely within the system. Without these gaps, stress can build up across the wall, leading to visible cracking or failure.
Key reasons brick slip expansion gaps are used include:
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Allowing for thermal expansion and contraction.
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Accommodating movement in the supporting structure.
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Reducing stress on adhesives and mortar joints.
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Preventing cracking and long term damage.
Expansion gaps are particularly important on larger wall areas and external installations.
Brick Slip Expansion Gaps in Traditional Construction
In traditional brickwork, movement joints are commonly used to control expansion in masonry walls. The same principles apply to brick slip systems, even though the construction method differs.
Ignoring movement allowance can lead to similar problems, including cracking and loss of adhesion.
Brick Slip Expansion Gaps with Brick Slips
With brick slips, expansion gaps are usually formed at changes in direction, around openings, at junctions with other materials, and across large uninterrupted wall areas. These gaps are often filled with a flexible sealant rather than mortar.
Correct positioning and spacing of expansion gaps helps maintain the appearance of the brickwork while protecting the system beneath.
Brick Slip Expansion Gaps and Slips from Stock
At Slips from Stock, our brick slips are designed to be installed as part of a complete system that allows for natural movement. Incorporating expansion gaps where required helps ensure the long term performance and durability of brick slip installations.
Brick slip expansion gaps are a preventative measure that protects both appearance and performance. When planned and installed correctly, they help brick slip systems withstand movement and environmental change without compromising the finished brickwork.