In response to increasing pressure on commercial developers to deliver projects quicker than ever, REHAU has introduced its first Two-Part Retrofit Window Sill. This latest innovation acts as a preventative solution against one of the most frequent snagging issues known to delay building completions.

REHAU’s Two-Part Retrofit Window Sill is designed to be completed at the very end of a build, once the risk of any on-site damage has passed. This offers vital flexibility to fabricators, installers, builders, and developers alike.

Most noteworthy in the REHAU window sill design is the easy-to-install, two-part product configuration. This ensures that the nose of the window sill can be added at the closing stages of the project, avoiding the risk of costly damage to traditional one-piece window sills that may have previously been incurred during construction work.

Furthermore, once clipped into place, the window sill is completely secure, reducing the risk of snapping and the need for any subsequent repair work.

The modern two-part arrangement of the window sill makes it perfect for offsite construction as the prominent window sill nose can be clipped on after delivery and assembly, avoiding any danger of damage in transit.

For developers and builders in particular, the product’s built-in drainage channel ensures any water that does get into the window is simply drained away without risking damage to the property’s brickwork.

Malcolm Taylor, product manager at REHAU reflects that, “Our Two-Part Retrofit Window Sill boasts a host of modern features, designed to add a finishing touch to any new window, and indeed, any residential or commercial build project. By bringing this product to market, we’re confident that we can alleviate some of the mounting time and cost pressures on developers to deliver projects on time and with no snagging issues further down the line.”

For more information about REHAU’s first Two-Part Retrofit Window Sill, visit