Understanding Brickwork Gaps and Mortar in New Builds

During the construction of a new home, it's common for homeowners to have questions about the appearance of brickwork, particularly concerning gaps and mortar. Understanding the purpose behind these elements can alleviate stress and ensure clarity with your builder.

Key Takeaways

Gaps Aid Drainage and Keying

Intentional gaps in brickwork, especially at corners or lower levels, often serve to allow water to drain during construction. These spaces also provide a surface for render or plaster to key into, ensuring a strong bond.

Mortar Variations Are Often Normal

Slightly insufficient or cracked mortar between bricks can be acceptable, particularly if the walls are intended for plastering or rendering. These imperfections can actually aid in the adhesion of finishing materials.

Sound Insulation Requires Attention

If plasterboard is being used, ensure any significant gaps in the brickwork are filled before installation. Unfilled holes can compromise sound insulation between rooms, so confirm this with your builder.

Consult Your Builder for Clarity

While many brickwork variations are standard practice, always communicate any concerns with your site supervisor. They can confirm the purpose of specific gaps or mortar treatments and address any potential issues.

White Mortar Can Discolor

White mortar can appear discolored due to red brick dust embedding into it during construction or brick cleaning. Acid washing, if not done correctly, can also affect the mortar's intended white appearance.

Understand Mortar Color Expectations

Be aware that 'white' mortar may be a mix of white sand and cream cement, which will not achieve a pure white finish. Clarify the exact materials used and manage expectations regarding the final color, especially if paying extra for a specific shade.