Rendering Over Existing Render- Common Issues You Can Face
Rendering Over Existing Render- Common Issues You Can Face
Rendering helps to provide your walls strength, durable bonding and uniform thickness. If you already have a rendered wall, then re-rendering it might often strike your mind. Typically, it is not advisable to render over the existing render due to several associated factors. This might also hamper the stability of the new render due to typical chemical bonding factors.
Render removal or rendering over the existing render is best guided by the professionals who undertake rendering as a regular job. It is advisable to use a decorative finish over the existing render or altogether remove it and then launch the usual rendering steps.
Traditional render coats were applied in successive layers:
Do you know that whilst house rendering, traditionally, the render coats were applied in successive layers? The traditional multi-coat render systems are usually considered weak and become weary over time. These consecutive layers gradually become thinner towards the surface. As a result, the topcoat renders are relatively fragile, and it becomes difficult to comprehend the bond strength of the existing layers of render.
Stresses caused due to additional materials:
Do you have any understanding of the ‘negative impact’ of renders? The steps employed in modern house rendering across Bridgeman Downs are more advanced and robust. If you apply a new render coat over the existing render, you will eventually negatively impact the renders on your walls. Adding new render layers over the existing ones adds more weight to the previous layers. This, in turn, negatively impacts the overall bond strength of the first render layer with the wall (substrate).
Organic growth, dirt deposits and painting on existing renders:
Numerous issues are associated with existing rendered surfaces that are best catered by the professionals excelling in doing house rendering across Zillmere. Existing renders with a thin paint coating are a weak interface to add on new render coats.
Dirty deposits accumulate over time, which will further intimidate the bonding of the new render coat. Organic growth of moulds and mildew will further delaminate the new render surface.
Disclaimer:
Renders are chemically constituted products that require specific substrates and bonding to adhere. Seeking consultation from the professionals offering house rendering in Samford will help you clean the surface before applying new render coats. Rendering coats are never applied over soft and friable surfaces!